СПОСОБЫ И УСТРОЙСТВА ДЛЯ УПРАВЛЕНИЯ СЕТЬЮ

Изобретение относится к способу и устройству управления сетью. Технический результат заключается в повышении эффективности управления потоком сетевого трафика за счет своевременного высвобождения сетевых ресурсов. Способ управления сетью состоит в том, что в сети, содержащей группу устройств для передачи потока трафика, используя ресурсы сети, каждое устройство индивидуально связано со сроком действия, который определяет максимальный интервал между отправкой двух сообщений заданным устройством, при этом сообщения указывают, что заданное устройство подсоединено к сети, и на основании сроков действия группы устройств определяют время аренды передачей, которое, в свою очередь, определяет продолжительность использования ресурсов сети. 2 н. и 1 з.п. ф-лы, 2 ил.

ЧАСТИЧНАЯ ЗАМЕНА КОММУТАТОРА ПРОГРАММНО-КОНФИГУРИРУЕМОЙ СЕТИ В IP СЕТЯХ

Изобретение относится к области радиосвязи. Технический результат заключается в повышении быстродействия при восстановлении после отказов сети в отдельных линиях связи или узлах и выполнении балансировки нагрузки после восстановления. Сетевое устройство содержит память, процессор, множество сетевых узлов, которые содержат множество устройств построения сети, причем пакеты данных, которые намечено передавать в сетевой узел-адресат из первого сетевого узла через отказавший объект построения сети среди упомянутого множества объектов построения сети, передаются первым сетевым узлом в назначенный сетевой узел среди упомянутого множества сетевых узлов на основе конфигураций маршрутизации трафика. 3 н. и 17 з.п. ф-лы, 6 ил.

СИГНАЛИЗАЦИЯ ОБМЕНА ХАРАКТЕРИСТИКАМИ ОРИЕНТАЦИИ УСТРОЙСТВА И АДАПТАЦИЯ МУЛЬТИМЕДИЙНОГО СОДЕРЖАНИЯ, В ОТВЕТ НА ОРИЕНТАЦИЮ УСТРОЙСТВА, СЕРВЕРОМ

... 1. Пользовательское устройство (UE), выполненное с возможностью радиосвязи с удаленным сервером медиа содержания и инициирования обмена сигналами о характеристиках, содержащее:датчик ориентации;устройство отображения;радиочастотный приемопередатчик;процессор, функционально соединенный с радиочастотным приемопередатчиком; ипамять, функционально соединенную с процессором, при этом память хранит команды для конфигурирования процессора, для:передачи, с помощью радиочастотного приемопередатчика, информации, сообщающей удаленному серверу медиа содержания или серверу профилей устройств о характеристиках ориентации устройства указанного UE, при этом указанные характеристики ориентации устройства UE содержат одну или более заданных позиций ориентации устройства, соответствующих информации об ориентации обеспечиваемой датчиком ориентации.2. UE по п. 1, в котором команды дополнительно конфигурируют процессор, для:приема, от удаленного сервера медиа содержания, файла описания, описывающего множество ...

Способ резервирования для сетей связи

... 1. Способ связи между узлами, включающий:снабжение каждого пакета потока (11) данных, подлежащего пересылке, соответствующим идентификатором;передачу дублированных данных упомянутого потока данных от передающего узла (N0) в принимающий узел (N1) по меньшей мере по двум линиям (A, B) связи;и на принимающем узле:прием и буферизацию пакетов из упомянутых по меньшей мере двух линий связи для последующей пересылки упомянутого потока данных; при этом идентификатор соответствует позиции пакета в потоке данных, и шаг буферизации включает восстановление заранее заданной части потока данных в общем индексированном буфере с использованием пакетов, принятых по меньшей мере по одной из упомянутых по меньшей мере двух линий связи.2. Способ по п. 1, отличающийся тем, что шаг восстановления включает:выбор для записи в каждую индексированную позицию буфера только одного принятого пакета с конкретным идентификатором.3. Способ по п. 1 или 2, также включающий:для каждого принятого пакетаопределение соответствующего ...

СПОСОБ И СИСТЕМА ДЛЯ ПОДДЕРЖКИ ОПЕРАЦИЙ ПО ПРОТОКОЛУ УПРАВЛЕНИЯ РАСПРЕДЕЛЕННЫМ РЕТРАНСЛЯТОРОМ (DRCP) ПРИ СБОЕ СВЯЗИ

Data routing

Wellbore network with remote diagnostics

A downhole network-interface unit provides remote diagnostics and control for a downhole communications network. A network-interface unit may convert native format signals from downhole devices to a signal to be sent to a surface controller. Remote diagnostics of signal anomalies in the downhole network can be provided by the network-interface unit to provide diagnostics information, such as measurements or signal waveforms, to the surface. In some examples, the network-interface unit can also segment the downhole network as needed to maintain network health and integrity. Network segmentation can take place automatically in response to determining an anomalous condition or can be directed from a surface controller.

METHOD FOR PROTECTION CHANGE-OVER

CONTAINMENT OF NETWORK ERRORS

DYNAMIC PROTECTION AGAINST LOSSES OF A HEAD-END KNOT OF ONE OR MORE TE-LSPS

PROCEDURE AND DEVICES FOR THE ADMINISTRATION OF A NETWORK

Information transmission, sending, and acquisition method and device

Disclosed are an information transmission, sending, and acquisition method and device. In a specific embodiment, the method comprises: using a master relay terminal and a slave relay terminal in an information relay terminal pair at the head of an information relay terminal pair queue to synchronously receive information sent by an information sending end, and using the master relay terminal to transmit information to an information receiving end; when a fault occurs in the master or slave relay terminal in the information relay terminal pair at the head of the queue, stopping using the master relay terminal and the slave relay terminal in the information relay terminal pair at the head of the queue to receive information, and deleting the information relay terminal pair from the information relay terminal pair queue; after the slave or master relay terminal in the deleted information relay terminal pair transmits all the information to the information receiving end and the fault of the ...

Method of restoring a ring system

Periodic channel state information reporting for coordinated multipoint (CoMP) systems

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcessIndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest CSIProcessIndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB).

Periodic channel state information reporting for coordinated multipoint (CoMP) systems

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcessIndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest CSIProcessIndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB).

ESTABLISHING APPLICATION-BASED ROUTING POLICIES IN MULTI-MODE USER EQUIPMENT

Techniques for establishing and implementing application-based routing policies for multi-mode wireless communication devices such as a user equipment (UE) are generally described herein. In some examples, information particular to the profile and platform configuration of the UE is communicated to an Access Network Discovery Function (ANDSF) server. The ANDSF server may provide an inter system routing policy (ISRP) to handle appropriate network offloading actions for the particular application and device configuration. In some examples, the ISRP may be specific to flow-based or non-seamless based traffic offloading from certain software applications. The techniques described herein may be propagated from the ANDSF server and implemented in a variety of multi-mode UE mobile computing devices in connection with offloading policies established in a 3GPP Long Term Evolution/Long Term Evolution-Advanced (LTE/LTE-A) Evolved Packet Core (EPC) network architecture. WO 2014/021989 PCT/US2013/044530 ...

A method for displaying information relating to a computer network

Wellbore network with remote diagnostics

A downhole network-interface unit provides remote diagnostics and control for a downhole communications network. A network-interface unit may convert native format signals from downhole devices to a signal to be sent to a surface controller. Remote diagnostics of signal anomalies in the downhole network can be provided by the network-interface unit to provide diagnostics information, such as measurements or signal waveforms, to the surface. In some examples, the network-interface unit can also segment the downhole network as needed to maintain network health and integrity. Network segmentation can take place automatically in response to determining an anomalous condition or can be directed from a surface controller.

SYSTEM AND METHOD FOR ESTABLISHING AN ALTERNATE COMMUNICATION PATH BETWEEN A CENTRAL MONITORING STATION AND A CONNECTED SECURITY/CONTROL SYSTEM

A system and method (10) are disclosed for providing an alternate communication path (30) between a central monitoring station (12) and a connected security/control system (14) for a home, office, apartment, business, or other resident or work-related area (16), the system (14) having a control panel (18) and a plurality of connected electronic devices (22 and 24), each device (22, 24) having a signal connection (26) with the control panel (18) to enable the control panel (18) to monitor and/or control each of the electronic devices (22 and 24). The system (10) is configured to automatically detect a failure in a primary communication path (20) between the control panel (18) and the central monitoring station (12) and, in response to such a detected failure, to automatically establish an alternative communication path (30) via one or more of the connected electronic devices (24).

METHOD AND SYSTEM FOR FAULT ISOLATION WITHIN A NETWORK ELEMENT IN AN OPTICAL NETWORK

A method and system for fault isolation within a network element in an optical network is described. A single fault in the system can give rise to multiple alarms detected at multiple points. Finding the root cause alarm corresponding to the fault that has triggered these alarms is important for fault isolation and is the focus of attention for this invention. The network element is modeled by a directed acyclic graph that captures the interactions among various components in the network element. Using a graph-based technique the invention analyzes the various topological faults raised and their locations for identifying root cause alarms and masking all correlated alarms.

PERIODIC CHANNEL STATE INFORMATION REPORTING FOR COORDINATED MULTIPOINT (COMP) SYSTEMS

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcessIndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest CSIProcessIndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB).

ESTABLISHING APPLICATION-BASED ROUTING POLICIES IN MULTI-MODE USER EQUIPMENT

Techniques for establishing and implementing application-based routing policies for multi-mode wireless communication devices such as a user equipment (UE) are generally described herein. In some examples, information particular to the profile and platform configuration of the UE is communicated to an Access Network Discovery Function (ANDSF) server. The ANDSF server may provide an inter-system routing policy (ISRP) to handle appropriate network offloading actions for the particular application and device configuration. In some examples, the ISRP may be specific to flow-based or non-seamless based traffic offloading from certain software applications. The techniques described herein may be propagated from the ANDSF server and implemented in a variety of multi-mode UE mobile computing devices in connection with offloading policies established in a 3GPP Long Term Evolution/Long Term Evolution-Advanced (LTE/LTE-A) Evolved Packet Core (EPC) network architecture.

Multibusiness network switch

A METHOD FOR MANAGING FAILURE IN AN ACCESS NETWORK BASED ON A GLOBAL STRATEGY

User equipment (UE) e.g. client mobile device has processor which transmits information providing device orientation capabilities to remote media content server or device profile server through radio-frequency transceiver

Selon la présente invention, dans une communication de type machine (MTC) avec un réseau d'évolution à long terme (LTE) 3GPP, il y a souvent besoin d'émettre et recevoir des charges utiles de petites données. De nouveaux éléments d'informations (IE) ont été définis pour faciliter l'émission et la réception de charges utiles de petites données. Des procédés et des systèmes peuvent utiliser les nouveaux IE pour émettre et recevoir des données de manière plus efficace. Les nouveaux IE comprennent un IE d'ACK de petites données et un IE de conteneur de petites données. D'autres nouveaux messages comprennent un indicateur de libération RRC et une libération de connexion RRC.

método, dispositivo e sistema de troca ligação

Periodic channel state information reporting for coordinated multipoint (CoMP) systems

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcessIndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest CSIProcessIndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB).

METHOD FOR SETTING A ROUTING PATH IN A MULTI-HOP NETWORK, AND DEVICE FOR SAME

The present invention relates to a method for setting a routing path in a multi-hop network and to a device for same. The method for setting a routing path in a multi-hop network according to the present invention includes: (a) transmitting a notify message regarding communication problems from a node determining that there are communication problems to a neighbor node in a predetermined hop count range; (b) deriving the access characteristics of the communication problem factor on the basis of the notify message by each neighbor node receiving the notify message regarding the communication problems from the node; (c) resetting the routing path on the basis of the access characteristics of the communication problem factor. As a result, a stable routing path may be adaptively set by recognizing the path where communication problems are expected according to the access characteristics of the communication problem factor.

METHOD AND SYSTEM FOR PROVIDING EMERGENCY SHUTDOWN OF A MALFUNCTIONING DEVICE

In a network system (100) having a plurality of devices (102) communicating via a network (104), a method (300, 400) and system (100) for providing an emergency signal is provided. In one embodiment, a device (102) is malfunctioning if the device (102) continuously transmits data to the network (104) without proper authorization. Another properly functioning device (102) transmits the emergency signal via an auxiliary channel (108) to the malfunctioning device (102). The auxiliary channel (108) is a separate channel supporting the transmission of the emergency signal. The malfunctioning device (102) receives the emergency signal and disables itself in response to this signal.

MULTI-SERVICE NETWORK SWITCH

L'invention concerne un autocommutateur multiservice capable de fournir de nombreux services de réseau à partir d'une seule plate-forme. Le commutateur comprend une architecture d'acheminement de paquet répartie, dans laquelle chacune des diverses cartes peut prendre des décisions d'acheminement indépendantes. Ledit commutateur permet, en outre, la gestion dynamique des ressources afin d'attribuer de manière dynamique des ressources de modem et RNIS à un appel d'arrivée. Ledit commutateur peut aussi comprendre des caractéristiques de gestion de défaillances pour veiller aux cas particuliers de défaillance au sein dudit commutateur. Ce dernier permet également la segmentation du commutateur en plusieurs routeurs virtuels, dans laquelle chaque routeur virtuel possède sa propre série de ressources et une table de routage. Chaque routeur virtuel est segmenté en réseaux privés virtuels afin de contrôler l'accès au réseau. Cette invention concerne le routage lié aux modalités de supports du commutateur ...

Stack link fault response system

A stack link fault response system includes a connected device, a first networking device, and a second networking device that is coupled to the connected device by first connected device link(s), and to the first networking device by stack links. The second networking device uses the stack links to transmit connected device communications received through the first connected device link(s) from the connected device. When the second networking device determines that a subset of the stack links are unavailable to transmit communications while at least one of the stack links is available to transmit communications, it performs a stack link fault response action that is configured to prevent the connected device from sending at least a portion of the connected device communications through the first connected device link(s) to the second networking device.

REMOTE NETWORK OPERATING SYSTEM

The claimed subject matter provides a system and/or a method that facilitates re-locating a web application associated with a network service utilizing a portion of serialized data. The network service can be any collection of resources that are maintained by a party (e.g., third-party, off-site, etc.) and accessible by an identified user over a network (e.g., WAN, Internet, etc.). A receiver component can receive a request for initiating and execution of a process that is maintained by the network service. A servicing component can analyze representations of multiple processes within the network service and determines whether to enable initiation and execution of the process based at least in part upon the analysis.

PARTNER DISCOVERY IN CONTROL CLUSTERS USING SHARED VLAN

At a first virtual device executing in a data processing system, a determination is made whether a partner list associated with the first virtual device includes a threshold number of partner virtual devices, the first virtual device participating in the control cluster. A first Live packet is unicast over the VLAN to each partner virtual device identified in the partner list. A unicast of a second Live packet from a second virtual device to the first virtual device is received over the VLAN, the second virtual device being identified in the partner list. A Hello packet is broadcast over the VLAN to cause the Hello packet to reach a third virtual device, wherein the Hello packet is configured to discover a new partner virtual device to add to the partner list, discovering the new partner enlarging the control cluster.

Systems and methods for increasing robustness of a system with a remote server

Systems and methods for increasing robustness of a system with a remote server are provided. Some methods can include a first system remotely controlling a second system, detecting a failure in the first system or in a communication link between the first system and the second system, and temporarily removing control of the second system from the first system.

Automatic problem isolation for multi-layer network failures

A method and apparatus includes automatically correlating indicators already generated by network components to detect and isolate failures that are caused by or related to network components operating on different layers of the open system interconnect (OSI) model. Failure indicators that persist for longer than a specified time window are automatically detected and correlated with one another based on a topology table. The method uses indicators already generated by the network components, obviating the need for software that typically resides on and consumes valuable processing time of network components.

EMS resolution of split-brain virtual network function components

An example operation may include a system, comprising one or more of receiving a virtual network function component instance (VNFCI) status notification resumption message with an active state when a peer VNFCI operational state is active, retrieving a timestamp of a VNFCI state change to an active state from an element VNFCI state database, retrieving a timestamp of a peer VNFCI state change to active from an element VNFCI state database, sending one or more of: a request to a virtual network function manager (VNFM) to determine if the VNFCI network is isolating while an operating state was active, and a request to the VNFM to determine if the peer VNFCI network is isolating while an operating state was active, sending a state change request with standby state to the peer VNFCI when the VNFCI is not network isolated and the peer VNFCI is network isolated, and a VNFM response is received regarding the VNFCI, a timeout response from the VNFM, and a VNFM response is received regarding the ...

DETECTION OF A MISCONFIGURED DUPLICATE IP ADDRESS IN A DISTRIBUTED DATA CENTER NETWORK FABRIC

Presented herein are techniques to detect a misconfigured duplicate Internet Protocol (IP) address in a distributed data center network fabric. A network topology is provided that includes a plurality of network elements. A network element receives a configuration message comprising an IP address from a first host associated with the first network element. The IP address is detected to already be in use by a second host associated with a second network element. A request message is provided to the second network element, the request message configured to cause the second network element to attempt to contact the second host. A reply message is received from the second network element. If the reply message indicates that the second host exists at the second network element, an indication of a misconfiguration event is generated. Otherwise, the IP address is associated with the first host.

Data transmission over wired networks

Aspects for data transmission over wired networks are described herein. The aspects may include a first transceiver and a second transceiver respectively connected to a communication bus. When the first transceiver receives differential signals from the communication bus, the first transceiver may be configured to convert the differential signals to digital signals and further to transmit the digital signals to a configurable logic circuit connected to both the first transceiver and the second transceiver. The configurable logic circuit may be configured to transmit the digital signals to the second transceiver when the communication bus is idle. The second transceiver may be configured to convert the digital signals back to differential signals and transmit the differential signals back to the communication bus.

METHOD AND SYSTEM FOR SYNCHRONIZING WITH NEIGHBOR IN A DISTRIBUTED RESILIENT NETWORK INTERCONNECT (DRNI) LINK AGGREGATION GROUP

A method of supporting a distributed resilient network interconnect (DRNI) at a network device is disclosed. The method starts with initializing the network device for operating distributed resilient control protocol (DRCP) on an intra-portal port (IPP) coupled to a neighbor network device using an intra-port link (IPL). The method continues with the network device checking that DRCP is enabled at the IPP and then enters an expired state. The network device then receives a DRCPDU and determines that the received DRCPDU is associated with the first portal it is assigned to. It determines that the received DRCPDU is compatible with the network device, and records neighbor network device's state information included in the received DRCPDU as state operational variables of the neighbor network device at the network device, wherein the neighbor network device's state information includes DRCP variables for the IPP.

Method, Device, and System for Dual-Uplink Tangent Ring Convergence

A method, device, and system for dual-uplink tangent ring convergence, where ports on a network device are classified into conjugate ports and non-conjugate ports. When receiving an entry update packet from a first port or perceiving a state change of a first port, when it is determined that the first port of the network device is a conjugate port, the network device clears a media access control (MAC) entry and an Address Resolution Protocol (ARP) entry that use the first port as an outbound interface and clears all MAC entries that use a non-conjugate port as an outbound interface, in a MAC table and an ARP table of the network device. In this way, traffic interruption can be avoided, wherein a failure of one dual-uplink tangent ring does not cause an entry of one or more other normal dual-uplink tangent rings to be cleared/updated.

In-band signaling for network protection switching

Systems are disclosed for automated protection switching enabled by in-band signaling. A status monitor coupled to a switch fabric may be operable to read signal quality information from cells packet-switched over the fabric, the cells carrying traffic signals from one or more working channels between two network nodes. The status monitor may apply a protection algorithm to the signal quality information to determine whether a traffic signal on a working channel meets requirements indicative of channel failure or degradation sufficient to move the traffic signal to an additional protection channel between the two nodes. The status monitor may encode a request to transfer this traffic signal in cells switched by the fabric. In some examples, this request may be encoded in an optional user and fabric overhead field of cells consistent with the Optical-Transport Network (OTN) over Packet Fabric Protocol (OFP).

Inter-application communication via signal-routes

A system and method for communicating between applications using a routing process. A set of one or more signal-routes are defined on a network device, including a first signal-route. Each signal-route is associated with a state of an application to be executed on the network device, wherein the first signal-route is associated with a first application state of the application. The network device detects, within the application executing within an application layer of the network device, a change in the first application state and notifies other applications of the change in the first application state. Notifying includes modifying the first signal-route, wherein modifying includes adding the first signal-route to or removing the first signal-route from a Routing Information Base (RIB) and advertising the change in the RIB.

PACKET DATA UNIT (PDU) STRUCTURE FOR SUPPORTING DISTRIBUTED RELAY CONTROL PROTOCOL (DRCP)

A method supporting distributed resilient network interconnect (DRNI) in a link aggregation group at a network device is disclosed. The method starts with encapsulating a distributed relay control protocol data unit (DRCPDU) in a frame, wherein the DRCPDU includes a protocol data unit (PDU) structure. The PDU structure includes a type field indicating that the DRCPDU is for DRCP, a version field indicating a version number of the DRCP, and a set of type/length/values (TLVs) including: a terminator TLV indicating an end of the PDU structure, a portal information TLV indicating characteristics of the first portal, a portal configuration information TLV indicating configuration information of the first portal, a DRCP state TLV indicating variables associated with an intra-portal link (IPP), a home ports information TLV and a neighbor ports information TLV. The method continues with transmitting the frame encapsulating the DRCPDU from the network device to a neighbor network device.

Establishing application-based routing policies in multi-mode user equipment using operating system-specific identifiers

Techniques for establishing and implementing application-based routing policies for multi-mode wireless communication devices are described. In some examples, information particular to the profile and platform configuration of the UE, including an identifier of an operating system, is communicated to an Access Network Discovery Function (ANDSF) server. The ANDSF server may provide an inter-system routing policy (ISRP) to handle appropriate network offloading actions for the particular application and device configuration. In some examples, the ISRP may be specific to flow-based or non-seamless based traffic offloading from certain software applications and include nodes to define routing rules based on an operating system identifier and operating system-specific application identifier. The policy may be propagated from the ANDSF server and implemented in multi-mode UE mobile computing devices in connection with offloading policies established in a 3GPP LTE/LTE-A Evolved Packet Core network ...

Remote support and testing of equipment

A method and system of supporting equipment distant from the support system are provided. The method includes the steps of forming a communications link between the equipment and the support system, using the support system to measure performance of the equipment and to provide a set of performance data, providing library data relating to the equipment, comparing the performance data with the library data and analysing the compared data whereby to provide a performance diagnosis of the equipment, all in a substantially continuous operation.

METHOD, SYSTEM AND DEVICE FOR PROTECTING MULTICAST IN COMMUNICATION NETWORK

The present invention discloses a method, a system, and a device for protecting multicast in a communication network. The technical solution of the present invention is: In a communication multicast network, a main node and a backup node serve as root nodes to generate two multicast trees simultaneously; the multicast tree that uses the backup node as a root node is set to be in a silent state; when the network is faulty, and the current main multicast tree is unable to forward multicast packets to all leaf nodes in the multicast tree, the silent state of the backup multicast tree is canceled and the backup multicast tree starts forwarding the multicast packets. In this way, when the network is faulty, the backup multicast tree quickly takes over the task of forwarding the multicast packets without requiring the generation of a new network topology and the generation of a new multicast tree, which quickens the recovery of the multicast service significantly and improves the user experience ...

Network management system using model based intelligence

БЛОК СВЯЗИ, СИСТЕМА СВЯЗИ, СПОСОБ СВЯЗИ И НОСИТЕЛЬ ЗАПИСИ

Изобретение относится к блоку связи, системе связи, способу связи, которые измеряют состояние маршрута связи. Технический результат изобретения заключается в возможности коммутировать маршрут на высокой скорости посредством управления сервера в соответствии с состоянием связи сети. Система связи содержит секцию добавления, секцию измерения, секцию уведомления о результатах измерения, секцию хранения правила обработки и секцию обработки. Секция добавления добавляет данные для измерения состояния связи к кадру приема, когда блок связи является входным граничным узлом сети. Секция измерения измеряет состояние связи на основании данных измерения состояния связи, когда блок связи является выходным граничным узлом сети. Секция уведомления уведомляет о результате измерения блок управления, который управляет сетью. Секция хранения правила обработки обращается к данным идентификатора кадра приема и сохраняет правило обработки, соотнося данные идентификации кадра приема и обработку кадра приема.

УСТАНОВКА ПОЛИТИКИ МАРШРУТИЗАЦИИ НА ОСНОВЕ ПРИЛОЖЕНИЙ В МНОГОРЕЖИМНОМ ОКОНЕЧНОМ УСТРОЙСТВЕ

Изобретение относится к операциям и связи, осуществляемой между устройствами в сетях радиосвязи. Техническим результатом является создание и эксплуатация политики на основе функции поиска и выбора сети доступа (ANDSF). Способ содержит этапы: получение от узла UE идентификатора операционной системы (OSId) для операционной системы UE, определение на основе идентификатора OSId прикладной политики для выгрузки данных из первичной сети доступа во вторичную сеть доступа для программного приложения, причем правило сетевой маршрутизации и тип программного приложения идентифицированы посредством OSId, определение узла приложения в составе узла политики межсетевой маршрутизации из состава вторового объекта управления функции ANDSF, предоставление второго объекта управления функции ANDSF на UE. 3 н. и 21 з.п. ф-лы, 9 ил.

СПОСОБ ПЕРЕДАЧИ ВСПОМОГАТЕЛЬНОЙ ИНФОРМАЦИИ ОБ АБОНЕНТСКОМ ТЕРМИНАЛЕ В СЕТИ РАДИОСВЯЗИ

Изобретение относится к сетям радиосвязи и предназначено для уменьшения издержек при передаче между терминалом (UE) и узлом (eNB) информации о состоянии терминала. Изобретение раскрывает, в частности, устройство для усовершенствования передачи вспомогательной информации об UE в сети радиосвязи. Терминал (UE) содержит процессорную схему, конфигурированную для генерации элемента вспомогательной информации о терминале UE, содержащего индикатор предпочтительной мощности (PPI), ассоциированный с терминалом UE; модуль генератора сигнала, конфигурированный для генерации сообщения управления радио ресурсами (RRC), это сообщение RRC содержит элемент вспомогательной информации о терминале UE; и передающую схему, конфигурированную для передачи сообщения RRC усовершенствованному Узлу B (eNB) в сети радиосвязи, ассоциированной с этим терминалом UE, это сообщение RRC передают в восходящем выделенном канале управления (UL-DCCH). 2 н. и 15 з.п. ф-лы, 11 ил.

СПОСОБ И СИСТЕМА ДЛЯ ОБНОВЛЕНИЯ СОСТОЯНИЙ РАСПРЕДЕЛЕННОГО ОТКАЗОУСТОЙЧИВОГО СЕТЕВОГО МЕЖСОЕДИНЕНИЯ (DRNI)

СПОСОБ ПЕРЕДАЧИ ВСПОМОГАТЕЛЬНОЙ ИНФОРМАЦИИ ОБ АБОНЕНТСКОМ ТЕРМИНАЛЕ В СЕТИ РАДИОСВЯЗИ

... 1. Абонентский терминал (UE), содержащий:процессорную схему, конфигурированную для генерации сообщения с вспомогательной информацией, содержащего индикатор предпочтительной мощности (PPI) и информацию о состоянии мобильности (MSI), эти индикатор PPI и информация MSI ассоциированы с терминалом UE;модуль генератора сигнала, конфигурированный для генерации сигнала управляющего элемента (СЕ) уровня управления доступом к среде (MAC), этот сигнал MAC СЕ содержит указанное сообщение с вспомогательной информацией; ипередающую схему, конфигурированную для передачи сигнала MAC СЕ развитому Узлу В (eNB) в сети радиосвязи, ассоциированной с этим терминалом UE, сигнал MAC СЕ передают в восходящем совместно используемом канале (UL-SCH).2. Терминал UE по п. 1, дополнительно содержащий приемную схему, конфигурированную для приема сообщения RRCConnectionReconfiguration от узла eNB в ответ на передачу сигнала MAC СЕ, это сообщение RRCConnectionReconfiguration содержит параметры конфигурации режима дискретного ...

Verfahren zum Abschalten einer Kommunikation und korrespondierende Kommunikationsanordnung

Die Erfindung betrifft ein Verfahren zum Abschalten einer Kommunikation zwischen mindestens zwei Busteilnehmern (3, 3A, 3B), welche über einen Datenbus (DB) miteinander verbunden sind und während der Kommunikation jeweils zusätzlich zu einem Datensignal (TxData, RxData) ein Sendetaktsignal (TxCLK, RxCLK) übertragen, wobei mindestens einer der Busteilnehmer (3A) sein Sendetaktsignal (TxCLK) und sein Datensignal (TxData) basierend auf einem Referenztaktsignal (CLK_Ref) erzeugt, sowie eine korrespondierende Kommunikationsanordnung (1). Hierbei wird im Fehlerfall das Referenztaktsignal (CLK_Ref) abgeschaltet, so dass der mindestens eine betroffene Busteilnehmer (3A) kein Sendetaktsignal (TxCLK) und kein Datensignal (TxData) mehr überträgt und die fehlerhafte Kommunikation abgeschaltet ist.

A method and apparatus for managing identifiers of a multiple wans network device

The method and apparatus of the present invention concern the enablement and disablement of at least one identifier of a network device, which is capable of allowing connecting to a plurality of wide area network (WAN) connections through at least one wireless local area (WLAN) network connection. When a first WAN network connection does not meet at least one condition, the at least one corresponding identifier of said first WAN network connection are disabled and other identifiers not corresponding to said first WAN network connection are not affected. When first WAN network connection meets all said conditions again, said at least one corresponding identifier of said first WAN network connection are enabled again.

Method for restoring a link in a communication ring system

In a system comprising nodes linked in a ring structure where data flows between the nodes, a method of operating the system after a link has become broken, comprising recovering said broken link and the system treating said recovered link as still broken and operating said system so as to block said recovered link. One of the nodes in said ring system is a redundancy manager node which sends messages to the other nodes to implement blocking of said recovered link. Only when another link becomes broken does the system start to use the previously recovered link.

CONTAINMENT OF NETWORK ERRORS

SYSTEM AND PROCEDURE FOR THE MODELLING OF A COMPUTER NETWORK

Method and apparatus for signaling path restoration information in a mesh network

A method and system for synchronizing with a neighbor in a distributed resilient network interconnect (DRNI) link aggregation group

A method of updating operational states of a network device in a distributed resilient network interconnect (DRNI) of a link aggregation group is disclosed. The method starts with initializing the network device for link aggregation, wherein the initialization includes setting variables of the network device for a first portal as configured by administrative settings, where the first portal includes the network device and at least one neighbor network device. The method continues with determining that an operational state associated with the first portal is changed and updating a set of operational states of the network device for link aggregation in response to the operational state change, where the set of operational states of the network device for link aggregation includes an operational state of the gateway of the network device.

PERIODIC CHANNEL STATE INFORMATION REPORTING FOR COORDINATED MULTIPOINT (CoMP) SYSTEMS

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment 5 (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcesslndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest SCIProcesslndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB). I I I I I I II II I 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz 6 RBs 15 RBs 25 RBs 50 RBs 75 RBs 100 RBs 72 SCs 180 SCs 300 SCs 600 SCs 900 SCs 1200 subcarriers (SCs) 210 212 214 216 218 220 ...

Performing a change of primary node in a distributed system

... (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property (1) Organization11111111111111111111111I1111111111111i1111liiiii International Bureau (10) International Publication Number (43) International Publication Date W O 2019/072296 A2 18 April 2019 (18.04.2019) W IPO I PCT (51) International Patent Classification: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, Not classified KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (21) International Application Number: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, PCT/CN2018/120873 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (22) International Filing Date: TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 13 December 2018 (13.12.2018) (84) Designated States (unless otherwise indicated, for every (25) Filing Language: English kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, ...

METHOD AND APPARATUS FOR SIGNALING PATH RESTORATION INFORMATION IN A MESH NETWORK

... ▓▓▓▓ A method and apparatus are disclosed for monitoring and signaling a path▓restoration using pre-computed restoration paths following a detected fault on ▓a primary▓service path in a communications network. A fault occurring inside the ▓restorable▓portion of a network in heterogeneous or multiple network environments can be▓distinguished from faults occurring outside the restorable network in ▓accordance with the▓ANSI Tandem Connection Maintenance standard, T1.105.05-1994. Path restoration ▓is▓activated only when a fault causing path failure occurs inside the restorable ▓portion of▓the network. Each conforming node in the restorable portion of the network has ▓the▓necessary monitoring, signaling and cross-connect functionality and databases ▓to▓participate actively in real time restoration. Additional non-conforming ▓network▓elements can be positioned between the restoration nodes without preventing ▓path▓restoration. With the signaling architecture of the present invention, when an ...

SYSTEM AND METHOD FOR MULTICAST STREAM FAILOVER

A system and method for avoiding a single point of failure in the broadcast of streaming data. The system uses multiple redundant servers (10, 12) streaming the exactly same data to a failover device (16). The failover device buffers (20P, 20S) the streams into a primary and secondary data stream and automatically switches from the primary to the secondary data stream if it detects a corruption in the primary data stream. Since the buffered data packets of the two streams are identical and are synchronized, there is not outage for multicast receivers when the primary data source fails since there is a switch to exactly the same data in the next packet of the secondary data stream.

METHOD AND APPARATUS FOR SIGNALING PATH RESTORATION INFORMATION IN A MESH NETWORK

A method and apparatus are disclosed for monitoring and signaling a path restoration using pre-computed restoration paths following a detected fault on a primary service path in a communications network. A fault occurring inside the restorable portion of a network in heterogeneous or multiple network environments can be distinguished from faults occurring outside the restorable network in accordance with the ANSI Tandem Connection Maintenance standard, T1.105.05-1994. Path restoration is activated only when a fault causing path failure occurs inside the restorable portion of the network. Each conforming node in the restorable portion of the network has the necessary monitoring, signaling and cross-connect functionality and databases to participate actively in real time restoration. Additional non-conforming network elements can be positioned between the restoration nodes without preventing path restoration. With the signaling architecture of the present invention, when an end-node detects ...

DEVICE ORIENTATION CAPABILITY EXCHANGE SIGNALING AND SERVER ADAPTATION OF MULTIMEDIA CONTENT IN RESPONSE TO DEVICE ORIENTATION

Capability exchange signaling techniques provide orientation sensor information from UEs to network servers. The orientation sensor information describes a device's support for orientation sensor capabilities, or a current orientation state of the device. Based on such information, a multimedia server provides different encoded versions of multimedia content for different device orientation modes supported by the device. The server may also adapt, dynamically and in real-time, media capture or transcode parameters for creating content tailored (i.e., optimized) for the device's current orientation mode, or for its various intermediate orientation states and spatial positions.

Networking-based test system online monitoring and fault diagnosis software platform

Used to support distributed relay control protocol (DRCP) packet data unit (PDU) structure

For from the suboptimal major P2MP switching over flow to the standby P2MP method and system

Bridge device and application and communication control method of multi PLC master station and multi PLC master station

ESTABLISHING ROUTING POLICIES BASED APPLICATION IN A MULTI-MODE USER EQUIPMENT

Network management apparatus for use in Evolved UMTS terrestrial radio access network, has corrective action circuit system executing automated action of optimization of coverage and capacity to reconfigure cell resources based on hole

L'invention concerne des modes de réalisation de systèmes et techniques pour le réglage de couverture dans des réseaux d'accès radio de terrain universels évolués (E-UTRAN). Dans certains modes de réalisation, un appareil de gestion réseau (NM) peut recevoir des données représentatives de premier et deuxième rapports de défaillance de liaison radio (RLF) comprenant des informations se rapportant à des déconnexions respectives de premier et deuxième équipements utilisateur (UE) d'un E-UTRAN. L'appareil NM peut identifier un trou dans une zone de couverture de l'E-UTRAN sur la base au moins en partie des premier et deuxième rapports RLF, et peut exécuter une action automatisée d'optimisation de couverture et de capacité (CCO) pour reconfigurer des ressources de cellule de l'E-UTRAN sur la base du trou identifié. D'autres modes de réalisation peuvent être décrits et revendiqués.

RAPPORT D'INFORMATIONS D'ETAT DE CANAL PERIODIQUES POUR SYSTEMES MULTIPOINT COORDONNEES (COMP)

L'invention concerne une technologie de rapport d'informations d'état de canal (CSI) périodiques dans un scénario multipoint coordonné (CoMP). Un procédé peut comprendre un équipement utilisateur (UE) générant une pluralité de rapports de CSI pour une transmission dans une sous-trame pour une pluralité de processus CSI. Chaque rapport de CSI peut correspondre à un processus CSI ayant un CSIProcessIndex. L'UE peut écarter les rapports de CSI correspondant aux processus CSI, à l'exception d'un processus CSI ayant un CSIProcessIndex le plus bas. L'UE peut transmettre au moins un rapport de CSI pour le processus CSI à un nœud B évolué (eNB).

향상된 확인응답 및 재송신 메커니즘

... 패킷 스트림과 연관된 프로토콜 데이터 유닛들(PDU들)이 재정렬 및 선택적 확인응답을 지원하기 위해 시퀀스 번호들과 함께 송신된다. 선택적 확인응답(SACK) 메시지는, 수신 디바이스에 의해 적절하게 수신되지 않았던 손실되거나 또는 손상된 PDU의 적어도 하나의 시퀀스 번호를 나타내기 위해 사용될 수 있다. SACK 메시지에 응답하여, 손실되거나 또는 손상된 PDU가, 원래의 PDU를 송신하기 위해 사용된 경로와는 다른 네트워크의 상이한 경로를 통해 재송신된다. 손실되거나 또는 손상된 PDU들은, 추정된 재송신 지연이 애플리케이션의 서비스 품질 요건들과 연관된 지연 허용오차보다 더 큰 경우 재송신되지 않을 수 있다. 대신, 제어 메시지(즉, 손실을 컷팅한다는 메시지)가, 특정 시퀀스 번호보다 더 빠른 PDU들이 송신되지 않을 것이라는 것을 나타내기 위해 송신될 수 있다.

Un método y sistema para soportar operaciones de protocolo de control de relay distribuido (drcp) en caso de fallo de comunicación.

MÉTODO QUE SOPORTA UNA INTERCONEXIÓN DE RED RESISTENTE DISTRIBUIDA (DRNI) EN UN GRUPO DE AGREGACIÓN DE ENLACES EN CASO DE FALLO DE COMUNICACIÓN EN UN DISPOSITIVO DE RED, EN QUE EL DISPOSITIVO DE RED Y UN DISPOSITIVO VECINO SE INCLUYEN EN UN PRIMER PORTAL DEL GRUPO DE AGREGACIÓN DE ENLACES, EN QUE EL PRIMER PORTAL ES ACOPLADO CON UN SEGUNDO PORTAL QUE INCLUYE DOS O MÁS DISPOSITIVOS DE RED REMOTOS; MÉTODO ALTERNATIVO; DISPOSITIVOS; MEDIOS DE ALMACENAMIENTO; PROGRAMA DE ORDENADOR.

TRANSMIT SPECIFIC TRAFFIC ALONG BLOCKED LINK

Embodiments herein relate to transmitting specific traffic along a blocked link. A status of links between switches of a network is monitored. The status of the links is one of blocked and non-blocked. A blocked link is not used by a Spanning Tree Protocol (STP). At least one of the network switches is configured to transmit the specific traffic along the blocked link.

PROCESS METHOD AND SYSTEM FOR A REMOTE FAILURE DEVICE IN OPTICAL TRANSPORT NETWORK

A method and system for processing a remote failure device in an Optical Transport Network (OTN) are provided by the invention. The method includes: determining a controllable device adjacent to the remote failure device (S 102); controlling the controllable device to send a control command to the remote failure device (S 104); and according to the control command, re-starting the remote failure device or controlling the main power supply system of the fault remote device to stop operation (S106). The invention improves the fault removal efficiency, reduces the waste of manpower, lowers the electric energy consumption of the communication network, and saves energy designedly.

Method and system for providing emergency shutdown of a malfunctioning device

In a network system having a plurality of devices communicating via a network, a method and system for providing an emergency signal is provided. In one embodiment, a device is malfunctioning if the device continuously transmits data to the network without proper authorization. Another properly functioning device transmits the emergency signal via an auxiliary channel to the malfunctioning device. The auxiliary channel is a separate channel supporting the transmission of the emergency signal. The malfunctioning device receives the emergency signal and disables itself in response to this signal.

NETWORK MANAGEMENT

A system and method for network management are described herein. The system includes a number of servers and a first network coupling the servers to each other and configured to connect the servers to one or more client computing devices. The system also includes a second network coupling the servers to each other, wherein data transferred between the servers is transferred though the second network. Network management requests for configuring the second network are communicated to the servers through the first network.

Controlling multicast source selection in an anycast source audio/video network

Particular embodiments of the disclosed subject matter provide methods and systems to support a multicast source selection system. In an example embodiment, the system includes a network element in data communication with a network, the network element being operable to: receive a request for withdrawal of a server as a source of a multicast data stream; and propagate information to the network indicating withdrawal of the server as a source of the multicast data stream, the propagation of information by the network element being responsive to the request for withdrawal of the server as a source of the multicast data stream.

Failure recovery method in non revertive mode of ethernet ring network

Provided is a failure recovery method in a non-revertive mode of an Ethernet ring network. In an Ethernet ring network, link priorities between nodes or node priorities are determined based on media access control (MAC) addresses and the nodes having blocked ports are determined after failures are recovered from based on the priorities so that the blocked ports can be distributed.

POWER SYSTEM COMMUNICATION MANAGEMENT AND RECOVERY

A method, system, and computer program product for determining severity of communication deficiencies and isolating faults in a power network of a data processing environment is provided. Pursuant to a continuous graph theory analysis, each of a plurality of nodes of the power network is initialized with the same arbitrary value. Each of a plurality of network paths connecting each of the plurality of nodes is analyzed. Upon a successful communication or communication deficiency over one of the plurality of network paths, one arbitrary value of one of the plurality of nodes connected to the one of the plurality of network paths is incremented or decremented, respectively by a weighting value. The incrementing and decrementing is repeated until a threshold is reached and a recovery is performed on which of the plurality of nodes has a lower adjusted value.

Systems and methods for enterprise security with collaborative peer to peer architecture

Systems and methods authenticate a device to operate within an enterprise system with an enterprise policy. An agent, installed on the device, analyzes the device to determine profile information of the device. The determined profile information is sent to a type 2 super peer that verifies whether the profile information conforms to the enterprise policy. If the profile information conforms to the enterprise policy, an agent trust credential is generated, within the type 2 super peer, for the agent, based upon the profile information, and issued to the agent. Authenticity of the device is verified based upon the agent trust credential. If the device is authenticated, communications with the device are permitted. If the device is not authenticated, communications with the device is prevented. In another embodiment, a method restores a device to conform to a system policy. A snapshot of critical components of the device is taken while the device is in compliance with the system policy. The ...

Assign tunnel tag identifying virtual local area network tunnel

An access point, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: assign a first tunnel tag to a first DHCP profile of a client device, the first tunnel tag identifying a primary VLAN tunnel to a first network controller of a first data center; assign a second tunnel tag to a second DHCP profile of the client device, the second tunnel tag identifying a secondary VLAN tunnel to a second network controller of a second data center; determine whether the primary VLAN tunnel to the first network controller is inactive based on a number of detected access failures; and connect the client device to the secondary VLAN tunnel in response to determining that the primary VLAN tunnel is inactive.

Switching mesh with user-configurable paths

One embodiment disclosed relates to a method of configuring a traffic-associated path through a switching mesh. A source switch receives a request to associate a type of traffic to a specified path. The source switch is located at the beginning of the path. A path tag is allocated to the path. The path through the mesh is built, and the association between the type of traffic and the allocated path tag is programmed. Other embodiments are also disclosed.

METHODS AND SYSTEMS FOR AUTOMATICALLY REROUTING LOGICAL CIRCUIT DATA

Methods and systems are provided to automatically reroute logical circuit data. In accordance with an example method, a failure of a dedicated logical circuit in a packet-based network is identified. The dedicated logical circuit has a first logical circuit identifier assigned prior to identifying the failure. The dedicated logical circuit connects a host device to a remote device to communicate data that originates and terminates only at the host device and the remote device. A logical failover circuit comprising an alternate communication path for communicating the data is selected. When the first logical circuit identifier of the dedicated logical circuit does not match a second logical circuit identifier of the logical failover circuit, the second logical circuit identifier is renamed to match the first logical circuit identifier. The data is rerouted to the logical failover circuit without manual intervention.

System and method for providing requested quality of service in a hybrid network

Telephone calls, data and other multimedia information is routed through a hybrid network which includes transfer of information across the internet. A media order entry captures complete user profile information for a user. This profile information is utilized by the system throughout the media experience for routing, billing, monitoring, reporting and other media control functions. Users can manage more aspects of a network than previously possible, and control network activities from a central site. The hybrid network also contains logic for responding to requests for quality of service and reserving the resources to provide the requested services.

Method and apparatus for isolating faults in a switching matrix

A signal router is described. The signal router includes a switching matrix, an error detector and a controller. The switching matrix includes a first number of inputs and a second number of outputs, and is configured to receive an information stream. The error detector is coupled to one of the second number of outputs, and is configured to generate error information by virtue of being configured to detect errors in the information stream. Likewise, the controller is coupled to the switching matrix and error detector. The controller is configured to select one of the first number of inputs, receive error information from the error detector, and configure the switching matrix to couple the selected input to one of the outputs.

IN-BAND SIGNALING FOR NETWORK PROTECTION SWITCHING

Systems are disclosed for automated protection switching enabled by in-band signaling. A status monitor coupled to a switch fabric may be operable to read signal quality information from cells packet-switched over the fabric, the cells carrying traffic signals from one or more working channels between two network nodes. The status monitor may apply a protection algorithm to the signal quality information to determine whether a traffic signal on a working channel meets requirements indicative of channel failure or degradation sufficient to move the traffic signal to an additional protection channel between the two nodes. The status monitor may encode a request to transfer this traffic signal in cells switched by the fabric. In some examples, this request may be encoded in an optional user and fabric overhead field of cells consistent with the Optical-Transport Network (OTN) over Packet Fabric Protocol (OFP).

UPLINK CONTROL INFORMATION TRANSMISSION WITH LARGE NUMBER OF BITS

Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for transmitting periodic channel state information having large payload sizes. Other embodiments may be described and claimed.

SYSTEM AND METHOD USING RSVP HELLO SUPPRESSION FOR GRACEFUL RESTART CAPABLE NEIGHBORS

A system, method and apparatus adapting one or more routers or nodes in a network to operate in a first mode to exchange hello messages with neighboring nodes to indicate thereby active or live status, and to operate in a second mode to avoid the use of hello messages by opportunistically relying upon service or management protocols to convey active or live status.

Wireless local area network system, fault recovery method, and recording medium stored therein a computer program executing the fault recovery process

The present invention provides a wireless local area network (LAN) system preventing throughput from being decreased even when a fault occurs in an access point, a fault recovery method, and a recording medium stored therein a computer program for executing the fault recovering process. The method for use in a wireless local area network system comprising a plurality of access points and a plurality of client terminals, the method comprising the steps of: detecting, by each of the access points, whether a fault occurs on each of the access points itself; disconnecting, by the access point which has detected the fault, the client terminal connected thereto; searching for, by the disconnected client terminal, another of the client terminals to which the disconnected client terminal is to be connected; and connecting the disconnected client terminal to the searched client terminal.

Transparent PSTN failover

Novel tools and techniques for implementing Transparent PSTN Failover. In some embodiments, a VoIP switch might receive a call request for connection between a calling party at a calling telephone number (“TN”) and a called party at a called TN. Based on a determination that connection via a session border controller (“SBC”) between the VoIP switch and an Internet Protocol (“IP”) gateway has been lost, the VoIP switch might route the call request to a PSTN redirect TN through the PSTN. One of the Class 5 switch of the PSTN or the IP gateway might replace the redirect TN with the called TN, based on a determination that the redirect TN represents a PSTN failover. The IP gateway may then route the call request to an IP PBX for terminating (establishing) the call connection between calling party and called party, without interception by an operator, receptionist, or auto attendant.

STACK LINK FAULT RESPONSE SYSTEM

A stack link fault response system includes a connected device, a first networking device, and a second networking device that is coupled to the connected device by first connected device link(s), and to the first networking device by stack links. The second networking device uses the stack links to transmit connected device communications received through the first connected device link(s) from the connected device. When the second networking device determines that a subset of the stack links are unavailable to transmit communications while at least one of the stack links is available to transmit communications, it performs a stack link fault response action that is configured to prevent the connected device from sending at least a portion of the connected device communications through the first connected device link(s) to the second networking device.

Absolute control of virtual switches

A telecommunications device for a telecommunications network comprises a controller configured to enable or disable said telecommunications device to reception and/or transmission of telecommunications data. The controller is further configured to generate a plurality of keep-alive signals for the telecommunications device. The telecommunications device is disabled to reception or transmission of said telecommunications data if no keep-alive signal is received by the telecommunications device after a predetermined time.

DYNAMICALLY REROUTING NODE TRAFFIC ON A PARALLEL COMPUTER SYSTEM

MULTI-ACCESS EDGE COMPUTING ARCHITECTURE AND DETECTION METHOD THEREOF

The present invention relates to a detection method for a multi-access edge computing architecture. The multi-access edge computing architecture uses the technology of bump-in-the-wire (BITW) to be deployed between the user device and the core network. The multi-access edge computing architecture includes a baseboard management controller, an edge computing service module, a central processing unit module, and a switching module. When any function in the multi-access edge computing architecture fails, the detection method of the present invention is used to actively detect and directly connect the base station to the core network. When the function is restored, the detection method of the present invention can actively restore the original path of the base station and the core network connected to the multi-access edge computing architecture to achieve seamless debugging and other purposes.

バーチャル・プライベートLANサービスへの冗長イーサネット自動保護スイッチング・アクセス

... 本明細書で開示された諸実施形態は、イーサネット自動保護スイッチング(EAPS)アクセス・ネットワークとバーチャル・プライベートLANサービス(VPLS)ネットワークとの間の冗長接続を提供する。第1のVPLSノードがEAPSコントローラ・ノードとして機能するために提供される。第2のVPLSノードがEAPSパートナ・ノードとして機能するために提供される。第1のVPLSノードおよび第2のVPLSノードは、疑似ワイヤおよびEAPS共用リンクによってリンクされる。さらに、追加のEAPSノードが提供される。追加のEAPSノードは相互にリンクされ、追加のEAPSノードの1つはマスター・ノードとして指定される。リンクはまた、1つまたは複数のEAPSリングが形成されるようにVPLSノードとEAPSノードとの間に確立される。各EAPSリングは、第1のVPLSノードと第2のVPLSノードとの間の共用リンクを含む。EAPSリングは、リンク障害を検出するために監視される。第1のVPLSノードと第2のVPLSノードとの間の疑似ワイヤ共用リンクの障害が検出された時は、EAPSノードのいずれかがVPLSノードの両方への経路を有する場合は、第1のVPLSノードに関連する全ての疑似ワイヤ・リンクがディセーブルにされる。そうでない場合は、第1のVPLSノードに関連する現存の疑似ワイヤ・リンクが維持される。 ...

МНОГОКОЛЬЦЕВАЯ СЕТЬ ETHERNET И СПОСОБ ЕЕ ЗАЩИТЫ

Настоящее изобретение относится к многокольцевой сети Ethernet и способу ее защиты. Техническим результатом изобретения является защита от возникновения широковещательного шторма. Способ защиты многокольцевой сети Ethernet включает следующие этапы: главный узел в главном кольце определяет состояние линии связи в главном кольце и состояние совместно используемого канала (этап S502); главный узел в главном кольце уведомляет главный узел в подчиненном кольце о состоянии линии связи в главном кольце и состоянии совместно используемого канала (S504); главный узел в подчиненном кольце определяет, следует ли открыть подчиненный порт в соответствии с полученной информацией от главного узла в главном кольце (S506). Настоящее изобретение позволяет главному узлу в подчиненном кольце открывать заблокированный порт, чтобы гарантировать, что физически установленное соединение между узлом в главном кольце и узлом в подчиненном кольце логически установлено для обслуживания графика, и может решить проблему ...

Fast flooding based fast convergence to recover from network failures

A router detects a network failure and responsive to that failure, floods a fast failure notification message out a set of interfaces of the router. The fast failure notification message includes information that identifies the network failure and includes as its source MAC (Media Access Control) address a MAC address that is assigned to an interface that is coupled with the detected network failure and is not part of the set of interfaces of the router. The router updates a routing table to reflect the network failure. The flooding of the fast failure notification message is performed prior to completion of the routing table update to reflect the network failure.

Automatic recovering method and device for node resource state in dense wavelenght divesion multiplexing based automatic swithched optical network system

The present invention provides a method and apparatus for automatically restoring node resource state in the Dense Wavelength Division Multiplexing Based Automatic Switched Optical Network (WSON) system. This method comprises the following steps: using each node in the WSON system as an initiation node and notifying the resource state of the initiation node to a neighboring node; the neighboring node comparing the received resource state of the initiation node with the resource state of the present end; and under the condition that the resource state of the initiation node and that of the neighboring node are inconsistent, according to the actual resource state, determining one of the initiation node and the neighboring node to be the node whose resource is occupied, and automatically releasing the resource of the node. The present invention also provides an apparatus for automatically restoring node resource state in the WSON system. The present invention can effectively detect the problem of inconsistent wavelength resource in the WSON system caused by abnormal status, and can automatically correct the resource state information, release the link bandwidth resource occupied incorrectly, at the same time enhance the fault-tolerant capability and the stability of the WSON system.

Management of misbehaving nodes in a computer network

In one embodiment, a node in a computer network detects a misbehaving node in the computer network based on the misbehaving node acting in violation of one or more rules. As such, the node communicates information regarding the misbehaving node to a network management system (NMS), and then may receive isolation instructions from the NMS regarding how to isolate the misbehaving node from the computer network. Accordingly, the node may perform the isolation instructions. In another embodiment, the NMS receives the communicated information regarding the misbehaving node, and determines whether the misbehaving node should be isolated based on the communicated information. If so, then the NMS determines isolation instructions regarding how to isolate the misbehaving node from the computer network, and transmits them to one or more nodes in the computer network, accordingly.

Multiple-Fault-Tolerant Ethernet Network for Industrial Control

Fault-tolerant Ethernet is provided through the use of special interfaces providing end-devices with duplicate ports that may be alternatively enabled with the same network address in the event of a fault detected by loss of the message from a beacon device. Unidirectional network errors in the direction from the end-device to the beacon devices are detected through a path check message from the end-device to the beacon device. Multiple faults may be accommodated without network interruption by adding top-level switches without increasing the number of ports on the end-devices by cross connecting a lowest level of switch.

SWITCH FABRIC MANAGEMENT

Techniques are disclosed for managing a switch fabric. In one embodiment, a server system is provided that includes a midplane, one or more server cards, switch modules and a management controller. The midplane may include a fabric interconnect for a switch fabric. The one or more server cards and the switch modules may be operatively connected to the midplane. The switch modules may be configured to switch network traffic for the one or more server cards. The management controller may be configured to manage the switch modules via the fabric interconnect. 1. A computer-implemented method , comprising:providing a server system comprising a midplane, one or more server cards, and a plurality of switch modules, wherein the midplane comprises a fabric interconnect for a switch fabric, wherein each server card and each switch module is operatively connected to the midplane, and wherein each switch module is configured to switch network traffic for at least one of the one or more server cards; andmanaging the plurality of switch modules via the fabric interconnect and by operation of one or more computer processors.2. The computer-implemented method of claim 1 , wherein the only interconnect between the switch modules and the management controller is the fabric interconnect.3. The computer-implemented method of claim 1 , wherein the only interconnect used by the management controller in managing the plurality of switch modules is the fabric interconnect.4. The computer-implemented method of claim 1 , wherein managing the plurality of switch modules comprises at least one of powering on claim 1 , powering off claim 1 , communicating with claim 1 , updating firmware in claim 1 , restarting claim 1 , initializing claim 1 , monitoring claim 1 , and configuring at least one switch module of the plurality of switch modules.5. The computer-implemented method of claim 1 , wherein managing the plurality of switch modules comprises:performing a predefined action responsive to ...

Controlling Multicast Source Selection in an Anycast Source Audio/Video Network

Particular embodiments of the disclosed subject matter provide methods and systems to support a multicast source selection system. In an example embodiment, the system includes a network element in data communication with a network, the network element being operable to: receive a request for withdrawal of a server as a source of a multicast data stream; and propagate information to the network indicating withdrawal of the server as a source of the multicast data stream, the propagation of information by the network element being responsive to the request for withdrawal of the server as a source of the multicast data stream. 1. A network device , comprising:a memory to store computer instructions; and monitoring a multicast data stream being transmitted by a first server through a group of routers including a first router, wherein the server is a source of the multicast data stream and wherein the monitoring by the network device is by directly receiving the multicast data stream from the first router and not directly from the server;', 'transmitting a first request to receive the multicast data stream to the first router;', 'detecting a failure of the server to transmit the multicast data stream based on the monitoring of the multicast data stream;', 'receiving a second request to withdraw the server as the source of the multicast data stream; and', 'propagating information to the group of routers via unicasting indicating withdrawal of the server as the source of the multicast data stream responsive to detecting the failure of the server to transmit the multicast data stream or responsive to receiving the second request to withdraw the server as the source of the multicast data stream., 'a processor coupled to the memory, wherein the processor, responsive to executing the computer instructions, performs operations comprising2. The network device of claim 1 , wherein the multicast data stream is associated with a multicast group and a source address claim 1 , and ...

DYNAMIC ERROR DAMPENING IN A NETWORK SYSTEM

A method and computer system for dynamic error dampening in a node of a network system. Data traffic of the node is implemented in accordance with an Open Systems Interconnection (OSI) network management model that includes a Layer 1 physical link, a Layer 2 link including a data link in which primitive point-to-point data communication with neighboring nodes is enabled upon the Layer 1 physical link, and a Layer 3 link which is a network link operating on top of the Layer 2 link. Implementation of an error dampening process at the node includes deactivating the Layer 3 link of the node while monitoring data traffic over the Layer 2 link of the node. Deactivating the Layer 3 link of the node includes preventing the Layer 3 Link of the node from receiving incoming data traffic for routing to other nodes in the network system. 1. A method for dynamic error dampening in a node of a network system , said method comprising:implementing, by a processor of a computer system, an error dampening process at the node,wherein data traffic of the node is implemented in accordance with an Open Systems Interconnection (OSI) network management model that includes a Layer 1 physical link, a Layer 2 link comprising a data link in which primitive point-to-point data communication with neighboring nodes is enabled upon the Layer 1 physical link, and a Layer 3 link which is a network link operating on top of the Layer 2 link, andwherein said implementing the error dampening process at the node comprises deactivating the Layer 3 link of the node while monitoring data traffic over the Layer 2 link of the node, said deactivating the Layer 3 link of the node comprising preventing the Layer 3 Link of the node from receiving incoming data traffic for routing to other nodes in the network system.2. The method of claim 1 , wherein said method further comprises:said processor retrieving statistics of data traffic at the node;said processor computing an error ratio (E) based on the retrieved ...

METHOD AND APPARATUS FOR ESTABLISHING ROUTING PATH IN MULTI-HOP NETWORK

The present invention relates to methods and apparatuses for establishing a routing path in a multi-hop network. The methods comprises (a) transmitting a notification message associated with communication problem to neighboring nodes, (b) deriving approaching characteristics of a communication problem-causing element from the notification message, and (c) establishing a routing path based on the approaching characteristics of the communication problem-causing element. With the methods and apparatuses, it is possible to determine a path that is expected to experience a communication problem based on the approaching characteristics of a communication problem-causing element and to adaptively establish a reliable routing path. 1. A method of establishing a routing path in a multi-hop network , comprising the steps of:(a) transmitting, by a node that has determined that there is a communication problem, a notification message associated with the communication problem to neighboring nodes within a range of a predetermined number of hops;(b) deriving, by each of the neighboring nodes that has received from the node the notification message associated with the communication problem, approaching characteristics of a communication problem-causing element based on the notification message; and(c) establishing a routing path based on the approaching characteristics of the communication problem-causing element.2. The method of claim 1 , wherein the step (c) comprises the steps of: assessing a level of risk of the communication problem for each of nodes based on the approaching characteristics of the communication problem-causing element; and reestablishing a routing path by taking into consideration the level of risk.3. The method of claim 1 , wherein the approaching characteristics of the communication problem-causing element comprise approaching direction and speed of the communication problem-causing element.4. The method of claim 3 , wherein the approaching direction of the ...

DYNAMIC PROTECTION AGAINST FAILURE OF A HEAD-END NODE OF ONE OR MORE TE-LSPS

In one embodiment, a repair label switched path (LSP) is established for a primary LSP having a head-end node. The repair LSP extends from a neighboring upstream node of the head-end node to a downstream neighboring node of the head-end node. When a failure of the head-end node is detected, the neighboring upstream node reroutes traffic onto the repair LSP. The rerouted traffic rejoins the primary LSP at the down-stream neighboring node. The neighboring upstream node refreshes state of the primary LSP to maintain the primary LSP after failure of the head-end node. 1. A method comprising:establishing a repair label switched path (LSP) for a primary LSP having a head-end node, the repair LSP extending from a neighboring upstream node of the head-end node to a downstream neighboring node of the head-end node in a network;detecting a failure of the head-end node;rerouting, by the neighboring upstream node, traffic onto the repair LSP, the rerouted traffic to rejoin the primary LSP at the downstream neighboring node; andrefreshing, by the neighboring upstream node, state of the primary LSP to maintain the primary LSP after failure of the head-end node.2. The method of claim 1 , wherein the refreshing further comprises:sending, by the neighboring upstream node, replica state control blocks to the downstream neighboring node.3. The method of claim 2 , wherein the primary LSP is signaled using a Resource ReSerVation Protocol (RSVP) protocol claim 2 , and the replica state control blocks are embodied as RSVP Path messages.4. The method of claim 2 , further comprising:receiving, by the neighboring upstream node, returned state control blocks.5. The method of claim 4 , wherein the primary LSP is singled using a Resource ReSerVation Protocol (RSVP) protocol claim 4 , and the returned state control blocks are embodied as RSVP Resv messages.6. The method of claim 1 , further comprising:ceasing to refresh the state of the primary LSP in response to reconvergence of the network to ...

Identifying and transitioning to an improved voip session

An additional session is established for voice over internet protocol communication between a pair of endpoints in a network, wherein a current session is already established between the endpoints and is currently used for data packet communication between endpoints. Qualities of each of the sessions for voice over internet protocol communication are assessed and compared, and the endpoints signaled to select the session having the higher assessed quality as a current session for further data packet communication between the endpoints, and to remove the lower quality session from use as a session for the further data packet communication between the endpoints, or to use the lower quality session as a secondary session for data communication between the endpoints. More particularly, the assessed qualities of each of the current and additional sessions meet a basic requirement defined to provide voice over internet protocol data packet communication between the endpoints.

INFORMATION TRANSMISSION DEVICE, INFORMATION TRANSMISSION SYSTEM AND INFORMATION TRANSMISSION METHOD

An information transmission device includes: ring-ports; an access-port; a communication-path-setting unit to facilitate or cut off communication of the ring-ports or the access-port, based on a communication setting determined such that communication paths having priority levels and assigned with same identifiers have different sections; a control-signal-transmission unit, when a communication failure occurs between one ring-port and another information transmission device, to transmit, from another ring-port, a first control signal for instructing a cutoff of communication of the access-port in the communication path having a low priority level, and transmit a second control signal for instructing a facilitation of communication of the ring-ports; an access-port-control unit, upon receiving the first control signal, to cut off the communication of the access-port in the communication path having the low priority level; and a ring-port-control unit, upon receiving the second control signal, to facilitate communication of the ring-port having non-communication failure. 1. An information transmission device comprising:a pair of ring ports of a first ring port and a second ring port, each configured to communicate with an adjacent another information transmission device to form a ring network therewith;an access port configured to communicate with a network outside of the ring network;a communication path setting unit configured to facilitate or cut off communication of the ring ports or the access port, based on a communication setting determined such that a plurality of communication paths having priority levels and assigned with same identifiers have different sections in the ring network;a control signal transmission unit, when a communication failure occurs between the first ring port and another information transmission device, configured to transmit, from the second ring port, a first control signal for instructing a cutoff of communication of the access port ...

Apparatus and method for transferring a data signal by bypassing a power-saving segment in a communication network

An apparatus transfers a data signal along a transmission route that is set by a route determination device. The apparatus includes a data transmission unit and a controller. The data transmission unit receives the data signal from an upstream node adjacent to the apparatus in an upstream direction of the data signal along the transmission route, and transfers the data signal to a downstream node adjacent to the apparatus in a downstream direction of the data signal along the transmission route. The controller controls power supply to the data transmission unit, and transmits a route-reconfiguration instruction for reconfiguring the transmission route, to the route determination device, upon receiving, when power supply to the data transmission unit is stopped, from the route determination device, a path-creation request for requesting creation of a path on the transmission route.

Communication device, and wiring state detection method and non-transitory computer-readable medium storing program using communication device

The communication device, which is connectable by straight or crossover wiring to another communication device, comprises a transmission port configured to send signals to the other communication device, a reception port configured to receive signals, a communication controller including an automatic transmission and reception switching component that determines whether or not the wiring is correct and automatically switches the transmission and reception of signals by the transmission port and the reception port 1, and a wiring state notification component. The controller (i) actuates the automatic transmission and reception switching component when communication with the other communication device has not been established in a state in which the automatic transmission and reception switching component is not actuated, and (ii) through the wiring state notification component, outputs information that there is an error in the wiring when communication with the other communication device has been established as a result of (i).

Communication system, communication method and network management apparatus

In an example of the invention, network devices are classified into areas. Each of the areas includes edge nodes. A network management apparatus retains fault information including values each indicating whether or not a fault has occurred in each of the areas, retains detour path information including values indicating edge nodes, values indicating alternative areas to the areas and priorities assigned to the alternative areas, identifies, when determined that a fault has occurred in a first area based on the fault information, an alternative area to the first area based on the detour path information, determines, when determined that the fault has not occurred in the identified alternative area, the identified alternative area as a second area through which the active path passes, determines two edge nodes included in the second area, and detect network devices through which the active path passes between the two edge nodes.

Multimode apparatus and communicaton method thereof

A multimode apparatus and a communication method thereof are disclosed. If the multimode apparatus is chosen to serve as a relay station due to a base station having a backhaul link problem, it sets up a first relay link with a first base station. Upon receiving a request for releasing the first relay link from the first base station even though the backhaul link is not restored, the multimode apparatus sets up a second relay link with a second base station, or configures and operates a standalone network or an independent network.

Multicast service in virtual networks

Techniques are described to provide multicast service within a virtual network using a virtual network controller and endpoint replication without requiring multicast support in the underlying network. The virtual network controller is configured to create a multicast tree for endpoint devices of a multicast group in the virtual network at a centralized location instead of in a distributed fashion. The virtual network controller communicates the multicast tree to one or more of the endpoint devices of the multicast group to instruct the endpoint devices to replicate and forward multicast packets to other endpoint devices according to the multicast tree. The replication and forwarding of multicast packets is performed by virtual switches executed on the endpoint devices in the virtual network. No replication is performed within the underlying network. The techniques enable multicast service within a virtual network without requiring multicast support in the underlying network.

Coverage adjustment in e-utra networks

Embodiments of systems and techniques for coverage adjustment in evolved universal terrain radio access networks (E-UTRANs) are described. In some embodiments, a network management (NM) apparatus may receive data representative of first and second radio link failure (RLF) reports including information related to respective disconnections of first and second user equipment (UEs) from an E-UTRAN. The NM apparatus may identify a hole in a coverage area of the E-UTRAN based at least in part on the first and second RLF reports, and may perform an automated coverage and capacity optimization (CCO) action to reconfigure cell resources of the E-UTRAN based on the identified hole. Other embodiments may be described and claimed.

PERIODIC CHANNEL STATE INFORMATION REPORTING FOR COORDINATED MULTIPOINT (CoMP) SYSTEMS

Technology for periodic channel state information (CSI) reporting in a coordinated multipoint (CoMP) scenario is disclosed. One method can include a user equipment (UE) generating a plurality of CSI reports for transmission in a subframe for a plurality of CSI processes. Each CSI report can correspond to a CSI process with a CSIProcessIndex. The UE can drop CSI reports corresponding to CSI processes except a CSI process with a lowest CSIProcessIndex. The UE can transmit at least one CSI report for the CSI process to an evolved Node B (eNB).

Communication path switching for mobile devices

Methods, systems, and devices for switching internet protocol (IP) flows from a first communication path to a second communication path are disclosed herein. A user equipment (UE) may include an exchange component, a session component, and a communication component. The exchange component exchanges second communication path availability information between the UE and another UE by sending and receiving session initiation protocol (SIP) messages that include second communication path availability information over the first communication path. The session component changes the communication session by re-routing traffic flows to the second communication path based on the exchanged second path availability information. The communication component sends to and receives from the other UE data corresponding to an IP flow over the second communication path.

METHOD AND APPARATUS FOR PROTECTION SWITCHING

An apparatus and method for protection switching are disclosed. The protection switching method in accordance with an example of the present disclosure is capable of smoothly processing a protection switching while preventing a data path mismatch occurring in the protection switching in a case in which a forced switching command (FS), which is a passive command, and a signal failure (SF) of a protection path occur at both end nodes, respectively, when a linear protection switching is performed by use of a protection state coordination message in a packet network or a packet transport network. 1. A protection switching method of nodes , comprising:converting a state of a node to a remote state according to a message received from a far-end node;upon detection of a failure on a path of the node in the remote state, transmitting a path signal fail message with fault path information indicate fault condition and data path information to the far-end node, and transmitting/receiving traffic through a corresponding data path ; andupon reception of a no-request message from the far-end node in the remote state, converting to a normal state, and transmitting/receiving traffic through a corresponding data path.2. The protection switching method of claim 1 , further comprising claim 1 , if recognized that a message transmission is not normally performed due to a failure on a protection path serving as a message transmission path claim 1 , matching a data path to a data path of the far-end node according to a message received when a current node state is a normal state or a conversion to the remote state is made.3. The protection switching method of claim 1 , wherein each of the nodes is formed on a packet network or a packet transport network claim 1 , and a message transmitted between the nodes is a protection state coordination message claim 1 , and each of the nodes manages a switching state and performs a linear protection switching by use of the protection state ...

High availability for cloud-based services

High availability mechanisms are described for cloud-based services such as voice-over-IP (VoIP) services.

SERVICE CHAINING WITH SERVICE PATH MONITORING

Example methods and systems for failure handling for service chaining with service path monitoring. One example may comprise a first computer system detecting a data packet that is being forwarded along a first service path. The first computer system may configure a liveness check query and send the liveness check query along with the data packet towards a service virtualized computing instance to cause a liveness check response. In response to detecting the liveness check response from the service virtualized computing instance, the first computer system may determine that the service virtualized computing instance is available. Otherwise, report information may be generated and sent to trigger a switch from the first service path to a second service path that excludes the service virtualized computing instance. 1. A method for a first computer system to perform service chaining with service path monitoring , wherein the first computer system supports a service virtualized computing instance and the method comprises:detecting a data packet that is being forwarded along a first service path of a service chain that includes the service virtualized computing instance, wherein the data packet includes service header information identifying the first service path of the service chain, and requires processing by the service virtualized computing instance;configuring a liveness check query and sending the liveness check query along with the data packet towards the service virtualized computing instance to cause a liveness check response from the service virtualized computing instance; andin response to detecting the liveness check response from the service virtualized computing instance, determining that the service virtualized computing instance is available;otherwise, in response to detecting an absence of the liveness check response, generating and sending report information towards a second computer system, wherein the report information indicates that the service ...

ISOLATION AND MONITORING MODE FOR PROBLEMATIC DATA LINKS

Techniques for dampening an interface flapping rate between switches in a network environment. An interface of a first switch is designated as being in an active mode in which forwarding activity of the interface is permitted. The interface is determined to exhibit flapping behavior satisfying one or more dampening criteria when in the active mode. An indication is sent to a second switch to isolate the interface. A reply to the indication is received from the second switch. The interface is designated as being in an isolated mode in which health monitoring of the interface is permitted but forwarding activity of the interface is prohibited. The interface is determined to satisfy one or more reinstatement criteria when in the isolated mode. The interface is redesignated as being in the active mode. 1. A computer-implemented method to provide network stability by dampening an interface flapping rate between switches in a network environment , the computer-implemented method comprising:designating an interface of a first switch as being in an active mode in which forwarding activity of the interface is permitted, wherein the first switch is operatively connected to a second switch via the interface;determining that the interface exhibits flapping behavior satisfying one or more dampening criteria when in the active mode;sending, to the second switch, an indication that the interface is to be isolated;receiving, from the second switch, a reply to the indication that the interface is to be isolated;designating the interface as being in an isolated mode in which health monitoring of the interface is permitted but forwarding activity of the interface is prohibited;determining that the interface satisfies one or more reinstatement criteria when in the isolated mode; andredesignating the interface as being in the active mode by operation of one or more computer processors.2. The computer-implemented method of claim 1 , wherein the interface is designated as being in the ...

COVERAGE ADJUSTMENT IN E-UTRA NETWORKS

Embodiments of systems and techniques for coverage adjustment in evolved universal terrain radio access networks (E-UTRANs) are described. In some embodiments, a network management (NM) apparatus may receive data representative of first and second radio link failure (RLF) reports including information related to respective disconnections of first and second user equipment (UEs) from an E-UTRAN. The NM apparatus may identify a hole in a coverage area of the E-UTRAN based at least in part on the first and second RLF reports, and may perform an automated coverage and capacity optimization (CCO) action to reconfigure cell resources of the E-UTRAN based on the identified hole. Other embodiments may be described and claimed. 1 receive data representative of a first radio link failure (RLF) report, the first RLF report including information related to a disconnection of a first user equipment (UE) from an evolved universal terrestrial radio access network (E-UTRAN), and', 'receive data representative of a second RLF report, the second RLF report including information related to a disconnection of a second UE from the E-UTRAN;, 'receiver circuitry tocoverage analysis circuitry to identify a hole in a coverage area of the E-UTRAN based at least in part on the first and second RLF reports; andcorrective action circuitry to perform an automated coverage and capacity optimization (CCO) action to reconfigure cell resources of the E-UTRAN based on the identified hole.. A network management (NM) apparatus comprising: This application is a continuation of U.S. application Ser. No. 14/634,626, entitled “COVERAGE ADJUSTMENT IN E-UTRA NETWORKS,” filed Feb. 27, 2015, which is a continuation of U.S. patent application Ser. No. 13/733,110, entitled “Coverage Adjustment in E-UTRA Networks,” filed Jan. 2, 2013, and claims the benefit of U.S. Provisional Patent Application No. 61/679,627, entitled “Advanced Wireless Communication Systems and Techniques” filed Aug. 3, 2012. The contents of ...

Communication-based physical media monitoring

A communication system and method includes a receiver for receiving a communication signal coupled through a physical medium in accordance with a protocol. An interface formed in a single substrate receives from the receiver an indication of the signal strength of the received communication signal. The interface also decodes the information contained in the received communication signal. For example, the interface sends the information decoded from the received communication signal to a first application for consuming the decoded information. The interface also sends the indication of the signal strength of the received communication signal to a second application for generating a quality determination of the physical medium in response to the indication of the signal strength of the received communication signal.

Transparent failover in a network interface controller

A network interface apparatus includes a host interface for connection to a host processor and a network interface, which includes multiple distinct physical ports. Processing circuitry associates each of a plurality of virtual entities running on the host processor with a respective one of the physical ports, so that while both of the first and second physical ports are operational, the processing circuitry transmits data packets on behalf of first and second virtual entities, using assigned upper-layer addresses, through associated first and second physical ports. In response to an indication that the first physical port has ceased to operate, the processing circuitry transmits the data packets on behalf of the first virtual entity through the second physical port without changing the upper-layer addresses. 1. A network interface apparatus , comprising:a host interface for connection to a host processor, which is configured to run multiple virtual entities, including at least first and second virtual entities, which are assigned different, respective upper-layer addresses for communication over a network;a network interface, which comprises multiple distinct physical ports configured for connection to the network, including at least first and second physical ports; andprocessing circuitry, which is coupled between the host interface and the network interface and is configured to associate each of the virtual entities with a respective one of the physical ports, including associating the first and second virtual entities respectively with the first and second physical ports, so that while both of the first and second physical ports are operational, the processing circuitry transmits data packets on behalf of the first and second virtual entities, using the assigned upper-layer addresses, through the associated first and second physical ports,wherein the processing circuitry is further configured, in response to an indication that the first physical port has ceased ...

INTERNET-OF-THINGS SWARM MANAGEMENT

A method and apparatus for managing node failures in a mesh network is provided. In an example method for, a trigger is sent to a target node to return test data. The test data received from the target node is analyzed. The target node is classified as valid if the test data is within expected parameters. 125-. (canceled)26. An apparatus , comprising an internet-of-things (IoT) mesh network device , comprising:a radio transceiver to communicate with devices in a mesh network;a node validator to determine if a device in the mesh network is invalid; anda fault controller to instruct the invalid device to exit the mesh network.27. The apparatus of claim 26 , wherein the invalid device comprises invalid communications packets sent to the IoT mesh network device.28. The apparatus of claim 26 , wherein the invalid device turns off communications with the mesh network.29. The apparatus of claim 26 , wherein the devices in the mesh network reconfigure communications after the invalid device exits the mesh network.30. The apparatus of claim 26 , wherein the mesh network comprises a plurality of drones claim 26 , comprising a master drone claim 26 , the master drone comprising:an uplink transceiver to communicate with a cloud device;a swarm controller to accept a command for the plurality of drones from the cloud device;a swarm radio transceiver to communicate with other drones in the plurality of drones; andan inter-drone communicator to propagate the command to the other drones.31. The apparatus of claim 30 , comprising a fault controller to instruct a slave drone to activate an uplink transceiver in the slave drone claim 30 , and become the master drone.32. The apparatus of claim 30 , wherein the mesh network comprises a slave drone comprising:an inter-drone communicator to accept sensor data from an adjacent drone that is farther from the master drone and store the sensor data in a data store; andthe inter-drone communicator to send the sensor data from the data store to ...

METHODS AND APPARATUS TO PROACTIVELY SELF-HEAL WORKLOAD DOMAINS IN HYPERCONVERGED INFRASTRUCTURES

Example methods, apparatus and articles of manufacture to proactively self-heal workload domains in hyperconverged infrastructures are disclosed herein. A disclosed example apparatus includes a fault predictor to determine a probability that a node of a workload domain in a hyperconverged infrastructure will likely become faulty, and a decommissioner to decommission the node from the workload domain after the probability indicates the node will likely become faulty. 1. An apparatus , comprising:a fault predictor to determine a probability that a node of a workload domain in a hyperconverged infrastructure will likely become faulty; anda decommissioner to decommission the node from the workload domain after the probability indicates the node will likely become faulty.2. The apparatus of claim 1 , wherein the fault predictor is trained using historical health data collected from nodes together with information regarding when actual faults occurred claim 1 , and the probability is determined by passing current health data through the trained fault predictor.3. The apparatus of claim 1 , wherein the fault predictor is to determine the probability based on monitored health data for the node.4. The apparatus of claim 1 , wherein the decommissioner is to decommission the node when the probability exceeds a threshold.5. The apparatus of claim 1 , wherein the decommissioner does not decommission the node from the workload domain when the probability does not represent the node is likely to become faulty.6. The apparatus of claim 1 , further including a commissioner to commission a replacement node for the workload domain after the node is decommissioned.7. The apparatus of claim 1 , further including a health data collector to collect health data for the node.8. The apparatus of claim 1 , wherein the workload domain includes a plurality of applications executing on a plurality of nodes claim 1 , the applications having at least one of a substantially similar performance ...

Coverage adjustment in e-utra networks

Embodiments of systems and techniques for coverage adjustment in evolved universal terrain radio access networks (E-UTRANs) are described. In some embodiments, a network management (NM) apparatus may receive data representative of first and second radio link failure (RLF) reports including information related to respective disconnections of first and second user equipment (UEs) from an E-UTRAN. The NM apparatus may identify a hole in a coverage area of the E-UTRAN based at least in part on the first and second RLF reports, and may perform an automated coverage and capacity optimization (CCO) action to reconfigure cell resources of the E-UTRAN based on the identified hole. Other embodiments may be described and claimed.

Managing Forwarding of Logical Network Traffic Between Physical Domains

Some embodiments provide a method for a first network controller located at a first physical domain that manages a logical network spanning several physical domains including the first domain. The method detects that connectivity is lost between the first network controller and a second network controller located in a second one of the physical domains. The method identifies a set of forwarding elements managed by the first network controller that implement the logical network. The method instructs the set of forwarding elements to drop packets for the logical network received from forwarding elements in the second physical domain. 1. For a first network controller located at a first physical domain that manages a logical network spanning a plurality of physical domains including the first domain , a method comprising:detecting that connectivity is lost between the first network controller and a second network controller located in a second one of the physical domains;identifying a set of forwarding elements managed by the first network controller that implement the logical network; andinstructing the set of forwarding elements to drop packets for the logical network received from forwarding elements in the second physical domain.2. The method of claim 1 , wherein detecting that connectivity is lost comprises:sending a message to the second network controller; anddetermining that no acknowledgment has been received from the second network controller in response to the message.3. The method of claim 1 , wherein the first and second physical domains are located in a same datacenter.4. The method of claim 1 , wherein the first physical domain is located in a first datacenter and the second physical domain is located in a second claim 1 , different datacenter.5. The method of claim 1 , wherein identifying the set of forwarding elements comprises using a network state database stored at the controller to determine the forwarding elements that implement the logical ...

FAULT-RESILIENT BROADCAST, MULTICAST, AND UNICAST SERVICES

In general, various capabilities related to fault-resilient services within communication networks are presented. The services may include broadcast services, multicast services, unicast services, or the like, as well as various combinations thereof. A capability for providing local protection to unicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for providing local protection to multicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees includes partitioning a graph into a pair of partitions based on a link coloring mechanism and constructing the pair of redundant trees based on the pair of partitions. 1. An apparatus , comprising: receive a graph representing a topology of at least a portion of a network, the graph comprising a set of nodes and a set of links, the set of nodes comprising a multicast source node;', 'partition the graph into a pair of partitions including a first partition and a second partition, the first partition comprising each of the nodes of the set of nodes and a first subset of links of the set of links, the second partition comprising each of the nodes of the set of nodes and a second subset of links of the set of links; and', 'construct, based on the pair of partitions, a pair of point-to-multipoint (P2MP) trees including a first P2MP tree and a second P2MP tree, the first P2MP tree being constructed based on the first partition and the second P2MP tree being constructed based on the second partition., 'a processor and a memory communicatively connected to the processor, the processor configured to2. The apparatus of claim 1 , wherein the first partition is a first redundant directed acyclic sub-graph (RDAG) and the second partition is a second RDAG.3. The apparatus of claim 1 , wherein claim 1 , to construct the pair of P2MP ...

AGGREGATED CONTROL-PLANE TABLES

A method includes obtaining network data. The data includes a first portion of the network data obtained from a first network device of at least two network devices, and a second portion of the network data obtained from a second network device of the at least two network devices. The method also includes obtaining, using the network data, enhanced network data that indicates a presence of a network flaw of the network, the network flaw is not indicated by either of the first portion or the second portion in isolation from the other portion. The method further includes performing a network enhancement action set using the enhanced network data to remediate the network flaw. 1. A network manager communicatively coupled to at least two network devices and configured to manage a network that comprises the at least two network devices , wherein the network manager , comprises:a processor; a first portion obtained from a first network device of the at least two network devices, and', 'a second portion obtained from a second network device of the at least two network devices; and, 'a storage storing network data obtained from the at least two network device, the network data comprising obtain the network data;', 'compare the first portion of the network data to the second portion of the network data;', 'determine, based on the comparison, that there is an inconsistency between the first portion and the second portion of the network data;', 'obtain, based on the determination, enhanced network data that indicates a presence of a network flaw within the network, wherein the network flaw is indicated by the inconsistency between the first portion and the second portion of the network data and cannot be indicated by either of the first portion or the second portion in isolation from the other portion; and', 'perform a network enhancement action set using the enhanced network data to remediate the network flaw,', 'wherein the network data manager further adds metadata ...

MONITORING OF COMMUNICATIONS NETWORK AT PACKET AND OPTICAL LAYERS

A method of monitoring a communications network by monitoring packet errors in one of the paths having at least two optical sections coupled in series with a break in continuity of optical transmission monitoring between the optical sections, and monitoring a transmission quality of each of these optical sections. A state is detected in which the monitored packet errors do exceed an acceptable threshold, but at the same time the transmission quality of each of the optical sections is acceptable, and an indication is transmitted of the detection. This can cause a request for an alternative path for the packets, or cause adapting of these optical sections to reduce bit errors. This can enable handling of potential conflict between packet and optical layers, when the packet layer sees errors but the optical layer indicates no problem. 1. A method of monitoring a communications network having paths for sending packets , the method comprising:monitoring packet errors in one of the paths having at least two optical sections coupled in series with a break in continuity of optical transmission monitoring between the optical sections, and monitoring a transmission quality of each of these optical sections;detecting a state in which the monitored packet errors do exceed an acceptable threshold, but at the same time the transmission quality of each of the optical sections is acceptable; andtransmitting a signal indicative of the detection of this state.2. The method of claim 1 , wherein the signal is used to cause a request for an alternative path for the packets.3. The method of claim 2 , the step of requesting comprises indicating that the alternative path is to use different optical sections.4. The method of wherein the monitoring of transmission quality comprises monitoring bit errors.5. The method of wherein the signal is used for the step of causing adapting of at least one of these optical sections to reduce bit errors.6. A method of adapting optical sections of a ...

Network Element For a Telecommunications Network Having Decoupled Control and Data Planes

A network element for a communications network having decoupled control and data planes may be in either a first state, the control plane and data plane are configured to interact, whereas, in the second state, the network element suppresses a control message for the data plane such that the configuration of the data plane is preserved. Accordingly, the network element may be in a second state when the data plane is undergoing maintenance such that there is no interaction between the control and data planes. 135-. (canceled)36. A network element for a communications network , the communications network having a control plane and a data plane which are decoupled , the network element comprising:a processor circuit configured to implement the data plane and the control plane functionality; and a first state in which a configuration of the data plane changes in response to the data plane receiving a control message from the control plane; and', 'a second state in which the network element is configured to suppress a control message for the data plane such that the configuration of the data plane is preserved., 'wherein the network element is configured to be in one of37. The network element as claimed in claim 36 , wherein claim 36 , in the second state claim 36 , the control plane does not send the control message to the date plane.38. The network element as claimed in claim 36 , wherein claim 36 , in the second state claim 36 , the control plane is configured to send the control message to the data plane claim 36 , and the configuration of the data plane is preserved in response to the data plane receiving the control message from the control plane.39. The network element as claimed in claim 38 , wherein claim 38 , in the second state claim 38 , the data plane is configured to reject the control message from the control plane.40. The network element as claimed in claim 36 , further comprising a memory circuit configured to store the control message.41. The network ...

High density, high availability compute system

A new physical computer architecture that combines elements in a virtuous cycle to eliminate performance killing inefficiencies in compute systems and need never be physically repaired during its lifetime is described. The system comprises a three dimensional rectangular cube structure with integrated liquid cooling and a multi-dimensional direct network laced through it. The network comprises a distributed, dynamically adaptive, multiply-fault-tolerant routing protocol that can logically replace failed components.

ADAPTIVE PRIVATE NETWORK WITH DYNAMIC CONDUIT PROCESS

Systems and techniques, including special messages and state machines, are described that configures an intermediate site to dynamically trigger creation of and removal of a dynamic conduit between two sites based on usage that is tracked at the sites. The intermediate site providing WAN-to-WAN forwarding between the two sites, monitors throughput statistics on each local WAN link (LWL) associated with the two sites. If traffic between the two sites passes a configured first threshold or if LWL usage passes a configured second threshold, the intermediate site sends a message to the two sites to set up a dynamic conduit directly coupling the two sites. Busy lists are used to keep track of eligible site pairs. Once a dynamic conduit is set up between two sites, a grow technique tests the dynamic conduit increasing communication flows between the two sites each configured sampling period before putting the conduit in normal use. 1. A method for growing communication capacity in a dynamically created conduit between two sites , the method comprising:changing a two hop communication pattern between a site A, an intermediate site, and a site B to a dynamic conduit with a one hop communication pattern between the site A and the site B without use of the intermediate site;initiating a grow state on the dynamic conduit by setting an initial flow limit and transferring bulk data flows, originally communicated through the intermediate site, directly across the dynamic conduit between site A and site B;increasing the flow limit by a pre-specified amount each sampling cycle upon a determination that the bulk data flows transferred with minimum errors during each sampling cycle; andchanging from the grow state to a client use state after a flow upper limit has been reached.2. The method of claim 1 , wherein the sampling cycle is user set to be greater than a round trip message transfer time between the site A and the site B.3. The method of further comprising:increasing the flow ...

RELIABLE MULTIPATH FORWARDING FOR ENCAPSULATION PROTOCOLS

In one embodiment, an ingress router sends a multipath information query across a computer network toward an egress router, and builds an entropy table based on received query responses. The entropy table maps the egress router to one or more available paths to the egress router, and associated entropy information for each respective available path of the one or more available paths. The ingress router may then forward traffic to the egress router using the entropy table to load share the traffic across the one or more available paths using the associated entropy information for each respective available path. In response to detecting a failure of a particular path of the one or more available paths, however, the ingress router then removes the particular path from the entropy table, thereby ceasing forwarding of traffic over the particular path.

FAST NETWORK FORMATION AFTER NETWORK POWER RESTORATION

In one embodiment, a first device in a network detects a power restoration event subsequent to a power outage event. Power is restored to the first device during the power restoration event. The first device synchronizes a channel hopping schedule to the detected power restoration event. The first device communicates with a neighboring device of the first device using the channel hopping schedule synchronized to the detected power restoration event. The neighboring device uses a corresponding channel hopping schedule to communicate with the first device that is also synchronized to the power restoration event.

IN-VEHICLE COMMUNICATION SYSTEM, RELAY DEVICE, AND COMMUNICATION METHOD

A relay device directly connected to end nodes in an in-vehicle network transmits a failure detection packet to each end node. When each end node can receive the failure detection packet, each end node transmits a response to the relay device. When the relay device receives the response, the relay device transmits another failure detection packet. The end node determines that the in-vehicle network is normal when the value of the previous failure detection packet does not match the value of the other failure detection packet, and determines that the in-vehicle network is not normal when the value of the previous failure detection packet matches the value of the other failure detection packet. 1. An in-vehicle communication system for a vehicle comprising:a plurality of end nodes as information processing devices disposed in an in-vehicle network; andat least one relay device directly connected to the plurality of end nodes, wherein: a request transmission unit that transmits a failure detection packet, which is a packet for detecting a communication status, to each end node; and', 'a response reception unit that receives a response transmitted from at least one of the end nodes capable of receiving the failure detection packet;, 'the at least one relay device includeswhen the response reception unit receives the response from the at least one of the end nodes, the request transmission unit transmits an other failure detection packet, having a value different from a value of a previous failure detection packet previously transmitted, to the at least one of the end nodes to which the previous failure detection packet is previously transmitted; a request reception unit that receives the failure detection packet transmitted from the at least one relay device;', 'a response transmission unit that transmits the response to the at least one relay device when the request reception unit can receive the failure detection packet; and', 'a communication state determination unit ...

HIGH EFFICIENCY DISTRIBUTED DEVICE-TO-DEVICE (D2D) CHANNEL ACCESS

Techniques for facilitating device-to-device (D2D) communications using a high efficiency distributed channel access scheme are generally described herein. In some examples, a communication zone allocated for wireless D2D communications is divided into resource contention and scheduled transmission portions. The resource contention segment may be used to transmit a request message from a transmitting device to a receiving device (a request-to-send message), and transmit a response to the request message from the receiving device to the transmitting device (a clear-to-send message). The response can indicate a time for the data transmission to occur during the scheduled transmission segment. During the scheduled transmission segment, the scheduled data transmission and other D2D data transmissions among the various devices will be performed. In further examples, contention access techniques may be used during the resource contention segment to manage access to the resource channel. 1. (canceled)2. An apparatus for a first user equipment (UE) configured for communication in a carrier network system , the apparatus comprising: memory; and processing circuitry , the processing circuitry configured to:decode uplink/downlink (UL/DL) configuration information indicating UL subframes of a communication frame that are configured as a Device-to-Device (D2D) segment for D2D communication among a plurality of UEs;decode resource configuration information that allocates a first portion of the UL subframes of the D2D segment to be used to exchange D2D control information among the plurality of UEs and that allocates a second portion of UL subframes of the D2D segment to be used to exchange data among the plurality of UEs;identify, using data in the first portion of the UL subframes of the D2D segment, a second UE of the plurality of UEs;encode data in the first portion of the D2D segment the encoded data indicating of a first set of resources in the second portion of the D2D ...

Method for performing beam failure recovery procedure of scell in wireless communication system and apparatus therefor

A method for performing a Scell Beam Failure Recovery (BFR) procedure by a user equipment (UE) in a wireless communication system is disclosed. The method comprises transmitting a message indicating that the Scell BFR procedure is triggered via a cell; incrementing a counter by 1 if the UE does not receive a response to the message; and deactivating the Scell if the counter reaches a maximum value.

IGP TOPOLOGY INFORMATION AND USE FOR BIER-TE

A first Bit Index Explicit Replication Traffic Engineering (BIER-TE) node of a network includes a first interface to a second BIER-TE node in the network. The first node includes a configuration topology and an operational topology. The configuration topology represents the configuration of the network and the operational topology represents usable and consistent links in the network topology. The first node receives first network topology information and updates the configuration topology with the first network topology information. The first node also verifies the first network topology information and updates the operational topology with the first network topology information responsive to the verification. The first node receives a packet including a routing bitstring having a set bit at a first bit index corresponding to the first interface and routes the packet to the second node responsive to the routing bitstring and the operational topology. 1. An apparatus for use in a first node of a network including a plurality of nodes , the apparatus comprising:a first interface to a second node of the plurality of nodes;a memory including program instructions, a configuration topology, and an operational topology; and receive first network topology information;', 'update the configuration topology with the first network topology information;', 'verify the first network topology information;', 'update the operational topology with the first network topology information responsive to the verification of the first network topology information;', 'receive a packet including a routing bitstring having a set bit at a first bit index corresponding to the first interface; and', 'route the packet to the second node based on the routing bitstring and the operational topology., 'a processor, coupled to the memory, the program instructions configuring the processor to2. The apparatus of claim 1 , wherein the received first network topology information includes a bit index ...

System and method for establishing an alternate communication path between a central monitoring station and a connected security/control system

A system and method (10) are disclosed for providing an alternate communication path (30) between a central monitoring station (12) and a connected security/control system (14) for a home, office, apartment, business, or other resident or work-related area (16), the system (14) having a control panel (18) and a plurality of connected electronic devices (22 and 24), each device (22, 24) having a signal connection (26) with the control panel (18) to enable the control panel (18) to monitor and/or control each of the electronic devices (22 and 24). The system (10) is configured to automatically detect a failure in a primary communication path (20) between the control panel (18) and the central monitoring station (12) and, in response to such a detected failure, to automatically establish an alternative communication path (30) via one or more of the connected electronic devices (24).

METHODS AND DEVICES FOR RADIO BEARER RELEASE

The disclosure relates to a method () for radio bearer release performed in a base station node () of a communication system (). The base station node () provides one or more radio bearers to a user equipment (), and the communication system () comprises a serving gateway (). The method () comprises: receiving () an error message from the serving gateway (), the error message indicating a faulty radio bearer; awaiting (), for a delay time, additional error messages indicating faulty radio bearers; and releasing () the one or more radio bearers being indicated as faulty. 1. A method for radio bearer release performed in a base station node of a communication system , the base station node providing one or more radio bearers to a user equipment , the communication system comprising a serving gateway , the method comprising:receiving an error message from the serving gateway, the error message indicating a faulty radio bearer,awaiting, for a delay time, additional error messages indicating faulty radio bearers, andreleasing the one or more radio bearers being indicated as faulty.2. The method as claimed in claim 1 , wherein the awaiting a delay time comprises waiting a random time period.3. The method as claimed in claim 1 , wherein the awaiting a delay time comprises waiting a time period set based on a predetermined period of time and/or traffic load of the base station node claim 1 , and/or based on processor capacity of the mobility management node and/or a load state of a mobility management node claim 1 , and/or based on number of delay timers started for other user equipment claim 1 , and/or based on number of radio bearer releases initiated during a specified period of time.4. The method as claimed in claim 1 , wherein the releasing of one or more radio bearers comprises transmitting a radio bearer release message to the user equipment for releasing the one or more radio bearers indicated as faulty.5. The method as claimed in claim 1 , wherein the releasing of ...

Adaptive Private Network with Path Maximum Transmission Unit (MTU) Discovery Process

Systems and techniques are described for a path maximum transmission unit (MTU) discovery method that allows the sender of IP packets to discover the MTU of packets that it is sending over a conduit to a given destination. The MTU is the largest packet that can be sent through the network along a path without requiring fragmentation. The path MTU discovery method actively probes each sending path of each conduit with fragmentation enabled to determine a current MTU and accordingly increase or decrease the conduit MTU. The path MTU discovery process is resilient to errors and supports retransmission if packets are lost in the discovery process. The path MTU discovery process is dynamically adjusted at a periodic rate to adjust to varying network conditions. 1. A method in a network node to address a probe trailer received out of order in a process to dynamically adjust a maximum transmission unit (MTU) , the method comprising:transmitting from a first network node a path MTU probe packet having a sequence number set to zero and with padding to meet a packet length according to a selected MTU and allowing the path MTU probe packet to be fragmented if the packet is too large;after said first transmitting step, transmitting from the first network node a path MTU probe trailer packet having a packet length significantly smaller than the selected MTU;receiving from the second network node a path MTU probe trailer only packet and transitioning to a state associated with the path MTU probe packet was dropped;after said first receiving step, receiving from the second node a path MTU received probe packet and transitioning to the state associated with the path MTU probe packet was received; andproceeding to probe a further node.224-. (canceled)25. The method of further comprising:upon receiving from the second network node the path MTU probe trailer only packet, adjusting the MTU down from a maximum value; andupon receiving from the second network node the path MTU received ...

TELECOMMUNICATIONS NETWORK WITH DATA CENTRE DEPLOYMENT

In various examples there is a telecommunications network access point of a telecommunications network in which the control plane is implemented using a data center comprising a plurality of interconnected computation nodes. The access point comprises a memory holding a log of encapsulated control messages the control messages being messages of a control protocol of the telecommunications network. The access point has a processor configured, for a control message to be sent by the access point to a node in the data center, to: generate a message identifier; encapsulate the control message in a packet of a communications protocol of the data center, add the message identifier to a header of the encapsulated control message; send the encapsulated control message to the node of the data center; and store a record of the encapsulated control message and node of the control plane in the log. 1. (canceled)2. A data center for providing reliable network functionality for a telecommunications network , the data center comprising:a load balancer implemented using hardware and configured to receive an encapsulated message from an access point of the telecommunications network, the encapsulated message including a control message of a control protocol of the telecommunications network;a plurality of virtual machines implemented using hardware and configured to act as control nodes for the telecommunications network, each virtual machine configured to receive and process the encapsulated message from the load balancer;wherein a first one of the plurality of virtual machines is associated to act as a respective control node for an end user device associated with the encapsulated message and receive the encapsulated message from the load balancer, andwherein a second one of the plurality of virtual machines is associated to act as the respective control node for the end user device upon failure of the first one of the plurality of virtual machines.3. The data center of claim 2 , ...

Reduced quorum for a distributed system to provide improved service availability

Example implementations relate to maintaining service availability. According to an example, a distributed system including multiple nodes establishes a number of the nodes to operate as voters in a quorum evaluation process for a service supported by the nodes. A first proper subset of the nodes is identified to operate as the voters and the remainder of the nodes do not vote in the quorum evaluation process. Responsive to detecting, by a voter, existence of a failure that results in the voter being part of a second proper subset of the nodes and that calls for a quorum evaluation, the voter determines whether the second proper subset of nodes has a quorum by initiating the quorum evaluation process. When the determining is affirmative, the second proper subset continues to support the service; otherwise, the second proper subset discontinues to make progress on behalf of the service.

Communication device, information processing system, and non-transitory computer readable medium

A communication device includes a memory in which representative values are stored, each of the representative values being a representative value of response times of communication with a server using one of multiple routes in a communication line that has the multiple routes, which include multiple relay devices and which are used to access the server, and the representative values being related to at least two of the routes and includes a determining section that determines that, in the case where a difference between the representative values, which are related to the two different routes and which are stored in the memory, is greater than a threshold, one of the relay devices that is a difference between configurations of the two different routes is a delay element.

REACHABILITY FAULT ISOLATION AND RECOVERY USING ASYNCHRONOUS NOTIFICATIONS

A fault isolation system asynchronously builds a fault domain graph to identify fault domains to isolate a root cause of a problem in a computer network. Basically, when the fault isolation system receives a notification that an entity of the network is unreachable (i.e., in a down status), the fault isolation system requests neighbor lists and statuses for the neighbors to asynchronously build a fault domain graph. From that topology, the fault isolation system determines a root cause of the problem with the network. 1. A method comprising:receiving an electronic notification that an entity of a computer network includes a down status, wherein the notification signifies a problem with the network;creating a fault domain graph including the entity with the down status;receiving the neighbor list for the entity with the down status, wherein the neighbor list includes names of entities that are connected to the entity with the down status;updating the fault domain graph based on the received neighbor list; receiving the status of each entity in the fault domain graph;', 'receiving the neighbor lists for each entity in the fault domain graph with a down status; and', 'updating the fault domain graph based on the received neighbor lists and the received statuses;, 'repeating the following actions until all entities in the fault domain include a known status and neighbor lists have been received for all entities with a down status within the fault domain graphdetermining, by a hardware processor, a root cause of the problem of the network based on the fault domain; andpublishing the root cause.2. The method of claim 1 , wherein determining claim 1 , by a hardware processor claim 1 , a root cause of the problem of the network based on the fault domain further comprises:identifying an entity in the fault domain graph with an up status;classifying each entity that is a neighbor of the entity in the fault domain with the up status as the root cause; andclassifying all other ...

AUTOMATIC STACK UNIT REPLACEMENT SYSTEM

Systems and methods for replacing a stack unit in a stack system include determining that a first and a second port that are located on opposite ends of the stack system are inactive when operating in a stack port mode after being connected to respective ports on a new stack unit that are operating in a Ethernet port mode. In response, the first and second port are converted from the stack port mode to the Ethernet port mode. A stack port probe packet is then sent from the first and second port to the new stack unit that cause the new stack unit to convert its connected ports from the Ethernet port mode to the stack port mode. A stack port probe reply is then received through the first and second port from the new stack unit and, in response, the first and second port are converted from the Ethernet port mode to the stack port mode. 1. A stack unit , comprising:a first stack unit chassis;a first port included on the first stack unit chassis; and determine that the first port is located on a first end of a stack system and is inactive when operating in a stack port mode;', 'determine that a second port that is included on a second stack unit chassis is located on a second end of the stack system and is inactive when operating in the stack port mode;', 'in response to determining that the first port is located on the first end of the stack system and is inactive when operating in the stack port mode and that the second port is located on the second end of the stack system and is inactive when operating in the stack port mode, convert the first port from the stack port mode to a Ethernet port mode;', 'send a stack port probe packet from the first port operating in the Ethernet port mode to a new stack unit; and', 'receive a stack port probe reply through the first port from the new stack unit and, in response, convert the first port from the Ethernet port mode to the stack port mode., 'a stack unit replacement engine that is coupled to the first port and that is ...

Method and apparatus for node processing in distributed system

A method including acquiring survival state information of the service nodes; acquiring current system information of the central node; determining, by using the survival state information and the current system information, whether there is an abnormality of the service node; acquiring central state information of the central node if there is an abnormality of the service node; and processing the abnormal service node according to the central state information. The example embodiments of the present disclosure integrate a state of the central node to adaptively process an abnormal service node, thereby reducing wrong determination of a service node state due to problems of the central node and reducing an error probability of the central node.

METHODS AND SYSTEMS TO TROUBLESHOOT AND LOCALIZE STORAGE FAILURES FOR A MULTITENANT APPLICATION RUN IN A DISTRIBUTED COMPUTING SYSTEM

Computational methods and systems that troubleshoot and localize failures in data storage of a multitenant application are executed in a multitenant database management system that comprises a control plane of control plane nodes and a data plane of independent and isolated data plane nodes. Each control plane node receives data requests and data queries. Each data plane node maintains data storage for tenants of the multitenant application and executes data storage and data query operations requested by the control plane nodes. Methods and system determine whether data plane nodes are network connected and whether the data cores of network connected data plane nodes are available to ingest data and respond to data queries. Data cores of disconnected data plane nodes and unavailable data cores are isolated from data ingestion and data queries. Remedial measures are executed to restore disconnected data plane nodes and unavailable data cores. 1. A process stored in one or more data-storage devices and executed using one or more processors of a computer system to troubleshoot and localize failures in data storage of a multitenant application run in a distributed computing system , the process comprising:determining network connection status for each data plane node of a database management system for a multitenant database, each data plane node having one or more data cores;determining availability status of the one or more data cores of each connected data plane node;isolating the one or more data cores of each disconnected data plane node from data storage ingestion and data queries;isolating unavailable data cores from data storage ingestion and data queries; andexecuting recovery to restore disconnected data plane nodes to receive data storage request and queries from control plane nodes and restore unavailable to data cores to ingest data and respond to data queries.2. The process of wherein determining the network connection status for each data plane node ...

Wireless Terminal Device, Measurement Control Method, Control Method, Measurement Control Program, and Recording Medium

A wireless terminal device performs a communication via the wireless LAN and also performs a communication via a wireless communication network different from the wireless LAN. The wireless terminal device is provided with a determiner for determining whether the device is moving or not, and a measurement controller for measuring a communication power of a communication radio wave transmitted from an access point of the wireless LAN in the position of the determination and for transmitting the information for allowing the operation administrator to specify the measured value of the communication power and the measurement position to the predetermined destination via the above described wireless communication network, triggered by a fact that the determiner determines that the wireless terminal device is not moving. 1. A wireless terminal device comprising:a wireless communicator, configured to perform a measurement of an index indicating a quality of a communication state in a first wireless communication network and transmission and reception of data via the first wireless communication network;a determiner, configured to determine whether the wireless terminal device is moving or not; anda measurement controller, configured to control the wireless communicator to measure the index indicating the quality of the communication state of the first wireless communication network, and to control the wireless communicator to transmit information capable of specifying a measurement position or information indicating the measurement position and the measured index to a predetermined destination, triggered by a fact that the determiner determines that the wireless terminal device is not moving.2. The wireless terminal device according to claim 1 , wherein the wireless communicator performs transmission and reception of the data via a second wireless communication network that is different from the first wireless communication network claim 1 , and wherein the measurement ...

AUTOMATION LOGIC TO PROACTIVELY ISOLATE LAYER 1 FAULTS IN A LEASED UNMONITORED NETWORK

A comprehensive integrated system and method includes (i) proactively monitoring a network for degraded service and to proactively make repairs to components before service outages, (ii) identifying the root causes of hard alarms and failures on a layer 1 transport network and generate trouble tickets; and (iii) after repair, verifying that repaired backbone network meets or exceeds performance criteria of Service Level Agreements (SLAs) with customers. A method includes surveilling first equipment in a network wherein the first equipment is in a controlled portion of the network, observing a set of messages wherein the set of messages relate to second equipment in a leased portion of the network, and detecting a fault in the network based on the surveilling step or the observing step. A fault based on the observing step includes the steps of receiving a first message at a first server indicating that a fault was detected in a portion of a leased network, receiving a second message at a second server indicating that the fault was detected in a portion of the leased network, and isolating the fault based on the first message and the second message. 1. A method comprising:Receiving a first message at a first server indicating that a fault was detected in a portion of a leased network;Receiving a second message at a second server indicating that the fault was detected in a portion of the leased network; andIsolating the fault based on the first message and the second message.2. The method of wherein the first message is a Line Alarm Indication Signal (LAIS) message and the second message is a first Path Alarm Indication Signal (PAIS) message and the isolating step identifies the fault occurred in a portion of the leased network upstream of the second server.3. The method of further comprising receiving a third message at the first server and further isolating the fault based on the third message.4. The method of wherein the third message is a second PAIS message and ...

COUPLER FOR POWER LINE COMMUNICATION AND POWER-OVER-ETHERNET

A coupler is provided. The coupler includes a power line, a PLC-to-Ethernet converter, a first transformer, and a power sourcing circuit. The power line is coupled between a first connector and a second connector. The power line is configured to conduct PLC signals. The PLC-to-Ethernet converter is configured to convert between the PLC signals and Ethernet signals. The first transformer is coupled between the PLC-to-Ethernet converter and a third connector. The first transformer is configured to condition the Ethernet signals for power-over-Ethernet transmission. The power sourcing circuit is coupled to the power line and configured to provide power to the first transformer. 1. A coupler , comprising:a power line coupled between a first connector and a second connector, the power line configured to conduct power line communication (PLC) signals;a PLC-to-Ethernet converter configured to convert between the PLC signals and Ethernet signals;a first transformer coupled between the PLC-to-Ethernet converter and a third connector, the first transformer configured to condition the Ethernet signals for power-over-Ethernet transmission; anda power sourcing circuit coupled to the power line and configured to provide power to the first transformer.2. The coupler recited in further comprising a second transformer coupled between the power line and the PLC-to-Ethernet converter.3. The coupler recited in claim 2 , wherein the second transformer is capacitively coupled to the power line.4. The coupler recited in claim 1 , wherein the power sourcing circuit comprises a circuit breaker configured to limit current to the third connector.5. The coupler recited in claim 4 , wherein the circuit breaker comprises a programmable current limit.6. The coupler recited in further comprising a rectifier coupled in series with the power sourcing circuit.7. The coupler recited in claim 1 , wherein the first transformer comprises a transmit stage having a center-tap coupled to the power sourcing ...

Control apparatus, storage apparatus, and non-transitory computer-readable recording medium having stored therein control program

A control apparatus receives information on an abnormality in a relay apparatus including first and second monitor units provided in the relay apparatus to relay a communication among control apparatuses, from the first monitor unit to manage first information and execute a monitor of the relay apparatus, the abnormality being detected by the first monitor unit; and when the received information is information on an abnormality of a bridge unit to form a first communication route between the first monitor unit and the second monitor unit to manage second information and execute a monitor of the relay apparatus, executes a process for switching a communication route used to synchronize the first and second information between the first and second monitor unit, from the first communication route via the bridge unit, to a second communication route via communication lines connecting the control apparatus and the first and second monitor units.

High availability system allowing conditionally reserved computing resource use and reclamation upon a failover

In one embodiment, a method determines a first set of virtual machines and a second set of virtual machines. The first set of virtual machines is associated with a first priority level and the second set of virtual machines is associated with a second priority level. A first set of computing resources and a second set of computing resources are associated with hosts. Upon determining a failure of a host, the method performs: generating a power off request for one or more of the second set of virtual machines powered on the second set of computing resources and generating a power on request for one or more virtual machines from the first set of virtual machines that were powered on the failed host, the power on request powering on the one or more virtual machines from the first set of virtual machines on the second set of computing resources.

COOPERATIVE ACTIVE-STANDBY FAILOVER BETWEEN NETWORK SYSTEMS

A method of determining the state of each peer node in a pair of first and second peer nodes is provided. The first node is configured as a confirmed active node and the second node is configured as a standby node. The second node transitions into a tentative active mode when a predetermined number of heartbeat messages are lost between the pair nodes while the first and second nodes remain functional. The second node receives a first message from the first node after the heartbeat messages are established between the peer nodes. The first message indicates that the first node is in the confirmed active mode. In response to the first message, the second node transitions from the tentative active mode into the standby mode and sends a second message from the second node to the first node indicating that the second node is in the standby mode. 1. A method of determining a state of each peer node in a pair of first and second peer message forwarding nodes , the first node configured as a confirmed active node and the second node configured as a standby node , the method comprising:transitioning the second node into a tentative active mode when a predetermined number of heartbeat messages are lost between the pair nodes while the first and second nodes remain functional;receiving a first message at the second node from the first node after the heartbeat messages are established between the peer nodes, the first message indicating that the first node is in the confirmed active mode; andin response to the first message, (i) transitioning the second node from the tentative active mode into the standby mode and (ii) sending a second message from the second node to the first node indicating that the second node is in the standby mode, wherein the first node remains in the confirmed active mode and forwards messages received from a set of data compute nodes (DCNs).2. The method of claim 1 , wherein the pair of the first and second nodes is one of a pair of edge forwarding ...

Limiting Service Availability When Sensor Device is Non-Operational Due to Noise Floor Change

Concepts and technologies are disclosed herein for limiting service availability when a sensor device is non-operational due to a noise floor change. According to one aspect of the concepts and technologies disclosed herein, a connected home system includes a controller device configured to monitor a plurality sensor devices deployed within a premises, and a sensor device of the plurality of sensor devices. The sensor device can monitor radio frequency (“RF”) noise in a radio environment associated with the premises. The radio environment is associated with an RF noise floor. The sensor device can determine whether the radio frequency noise exceeds a noise threshold. In response to determining that the RF noise exceeds the noise threshold, the sensor device can cause the controller device to exclude the sensor device from being monitored by the controller device until the RF noise returns to below the noise threshold. 1. A connected home system comprising:a controller device configured to monitor a plurality of sensor devices deployed within a premises; and a processor, and', monitoring radio frequency noise in a radio environment associated with the premises, wherein the radio environment has associated therewith a baseline radio frequency noise floor,', 'determining whether the radio frequency noise exceeds a noise threshold defined above the baseline radio frequency noise floor, and', 'in response to determining that the radio frequency noise exceeds the noise threshold, causing the controller device to exclude the sensor device from being monitored by the controller device until the radio frequency noise returns to below the noise threshold., 'memory comprising sensor instructions that, when executed by the processor, cause the sensor device to perform sensor operations comprising'}], 'a sensor device of the plurality of sensor devices, the sensor device comprising'}2. The connected home system of claim 1 , wherein causing the controller device to exclude the ...

Packet switch modules for computer networks with efficient management of databases used in forwarding of network traffic

In a packet switch with databases ( 250, 404 ) used for packet forwarding, the database pieces are identified by version identifiers ( 410 V) which are used by the packet switch's modules (LCx, RPM 0, RPM 1 ) in exchanging information on the databases and requesting updates to the databases. For example, if a primary management module fails and the management is transferred to a secondary management module, the secondary management module requests forwarding modules (e.g. line cards) to identify the database pieces stored on the forwarding modules, and to update the databases as needed. Use of version identifiers reduces the amount of data that has to be transferred in connection with such requests.

Automated action based on roaming satisfaction indicator

A method or corresponding apparatus for performing an automated action based on a roaming satisfaction indicator (RSI). A roaming satisfaction indicator for each individual mobile subscriber at a given time is evaluated by determining an age for each stored event by comparing the time the event was identified and the given time, assigning a current value to each of the stored events as a function of the determined age, the predetermined event type, and the predetermined impact level, and compiling the assigned current values of the events, resulting in the roaming satisfaction indicator at the given time. Based on the evaluated RSI, an action is automatically performed.

MBMS SESSION RESTORATION IN EPS FOR PATH FAILURE

The present invention relates generally to restoration procedures in a Multimedia Broadcast Multicast Service (MBMS) network (also referred to as evolved MBMS (eMBMS) network) in case of a path failure. 1. A method in a network node for restoring a Multimedia Broadcast Multicast Service (MBMS) session after path failure , comprising:detecting a path failure associated with an old path between the network node and an old control plane node, which old control plane node controls at least one MBMS session;selecting an alternative control plane node to re-establish said at least one MBMS session;detecting that the old path between the network node and the old control plane node has been recovered; andsending to the old control plane node an MBMS session stop request in order to clear the MBMS session on the nodes along the old path involving the old control plane node.2. The method of claim 1 , wherein the detected path failure is a transient path failure.3. The method of claim 1 , wherein: the selecting takes place before a path failure timer has expired.4. The method of claim 3 , wherein the path failure is regarded as transient when the selection takes place before the path failure timer has expired.5. The method of claim 1 , wherein the selecting further comprises:sending an MBMS session start request to the alternative control plane node; andreceiving an MBMS session start response from the alternative control plane node acknowledging the receipt of the MBMS session start request.6. The method of claim 5 , wherein the MBMS session start request comprises a re-establishment flag enabling the alternative control plane node to differentiate the restoration procedure from other procedures.7. The method according of claim 5 , wherein the MBMS session start request comprises a re-establishment flag enabling the alternative control plane node to differentiate whether it is an error so it may reject the MBMS session start request claim 5 , or whether it is a restoration ...

FAULT MONITORING IN MULTI-DOMAIN NETWORKS

The present subject matter relates to fault monitoring in multi-domain networks. In an example, alarm messages associated with multiple network entities in the multi-domain network are received. Upon receiving the alarm messages, state information of network entities traversed by services across the multi-domain network prior to receiving the alarm messages is acquired. The state information of the network entities for each of the services comprises hierarchical relationships between physical level entities, logical level entities, and service level entities traversed by a respective service. A network entity is identified from the acquired state information that matches with the faulty network entity corresponding to each of the alarm messages. Services that are impacted by the faulty network entity are determined based on traversing the state information of the network entities, through the hierarchical relationships, from the identified network entity to the service level entities. 1. A method for monitoring faults in a multi-domain network , the method comprising:receiving, by a processor, alarm messages associated with multiple network entities in the multi-domain network, wherein each of the alarm messages is indicative of a faulty network entity;upon receiving the alarm messages, acquiring, by the processor, state information of network entities traversed by services across the multi-domain network prior to receiving the alarm messages, wherein the state information of the network entities for each of the services comprises hierarchical relationships between physical level entities, logical level entities, and service level entities traversed by a respective service;identifying, by the processor, a network entity from the acquired state information that matches with the faulty network entity corresponding to each of the alarm messages; anddetermining, by the processor, services that are impacted by the faulty network entity based on traversing the state ...

Coverage adjustment in e-utra networks

Embodiments of systems and techniques for coverage adjustment in evolved universal terrain radio access networks (E-UTRANs) are described. In some embodiments, a network management (NM) apparatus may receive data representative of first and second radio link failure (RLF) reports including information related to respective disconnections of first and second user equipment (UEs) from an E-UTRAN. The NM apparatus may identify a hole in a coverage area of the E-UTRAN based at least in part on the first and second RLF reports, and may perform an automated coverage and capacity optimization (CCO) action to reconfigure cell resources of the E-UTRAN based on the identified hole. Other embodiments may be described and claimed.

Wireless communication device, wireless communication system, wireless communication method, and computer program product

According to one embodiment, a wireless communication device connected with a multi-hop network includes one or more processors. The processors communicate with a first parent node of the wireless communication device and with a child node of the wireless communication device. The processors transmit an instruction to restrict communication to the child node or do not receive data from the child node when receiving an abnormality notification indicating an abnormality from the first parent node.

ADAPTIVE PRIVATE NETWORK WITH PATH MAXIMUM TRANSMISSION UNIT (MTU) DISCOVERY PROCESS

Systems and techniques are described for a path maximum transmission unit (MTU) discovery method that allows the sender of IP packets to discover the MTU of packets that it is sending over a conduit to a given destination. The MTU is the largest packet that can be sent through the network along a path without requiring fragmentation. The path MTU discovery method actively probes each sending path of each conduit with fragmentation enabled to determine a current MTU and accordingly increase or decrease the conduit MTU. The path MTU discovery process is resilient to errors and supports retransmission if packets are lost in the discovery process. The path MTU discovery process is dynamically adjusted at a periodic rate to adjust to varying network conditions. 1. A method in a network node to dynamically adjust a maximum transmission unit (MTU) , the method comprising:transmitting a path MTU probe packet with padding to meet a packet length specified by a selected MTU and allowing the path MTU probe packet to be fragmented if the packet is too large;transmitting a path MTU probe trailer packet having a packet length significantly smaller than the selected MTU; andupon receiving a path MTU received probe packet having an Internet protocol (IP) datagram length the same as the selected MTU defined in the MTU probe packet, increasing the selected MTU for a subsequent MTU discovery probe of the increased MTU.2. The method of further comprising:transmitting a path MTU probe packet having a packet length according to the increased MTU and with a IP Header Don't Fragment bit set to 0.3. The method of further comprising:upon receiving a path MTU received probe packet having a second IP datagram length less than the adjusted MTU in response to the subsequent MTU discovery probe; andadjusting the increased MTU to be equal to the second IP datagram length.4. The method of claim 3 , wherein the path MTU probe packet was fragmented.5. The method of further comprising:upon receiving a ...

HOST SIDE METHOD OF USING A CONTROLLER ASSIGNMENT LIST

Some embodiments provide a novel method for distributing control-channel communication load between multiple controllers in a network control system. In some embodiments, the controllers manage physical forwarding elements that forward data between several computing devices (also called hosts or host computers), some or all of which execute one or more virtual machines (VMs). The method of some embodiments distributes a controller assignment list to the host computers. The host computers use this list to identify the controllers with which they need to interact to perform some of the forwarding operations of their associated logical forwarding elements. In some embodiments, agents executing on the host computers (1) review the controller assignment list to identify the appropriate controllers, and (2) establish control channel communications with these controllers to obtain the needed data for effectuating the forwarding operations of their associated physical forwarding elements. These agents in some embodiments are responsible for out-of-band control channel communication with the controllers. 125-. (canceled)26. A non-transitory machine readable medium storing a program that selects one of a plurality of controllers for different logical forwarding elements (LFEs) implemented by a first physical forwarding element (PFE) executing on a first computer and PFEs executing on other computers , the program for execution by at least one processing unit of the first computer , the program comprising sets of instructions for:receiving a controller assignment list that, based on a common range of index values, specifies first and second controllers for first and second ranges of index values;for a first LFE, generating a first index value based on an identifier of the first LFE and using the first index value to identify the first controller in the controller assignment list as the first LFE's controller;for a second LFE, generating a second index value based on an ...

Arbitration Method and Related Apparatus

This application discloses an arbitration method and a related apparatus. The method includes: detecting, by the first ABS apparatus, first status information of a service module in the first DC; when determining that a communication link between the first DC and the second DC is faulty, obtaining, by the first ABS apparatus, second status information, wherein the second status information is status information that is of a service module in the second DC and that is detected by the second ABS apparatus; and arbitrating, by the first ABS apparatus, a subsequent service providing capability of the first DC based on the first status information and the second status information. 120.-. (canceled)21. A method , comprising:detecting, by a first arbitration service (ABS) apparatus, first status information of a first service module of a first data center (DC), wherein the first ABS apparatus is located in the first DC, the first DC is connected to a second DC, and the second DC comprises a second ABS apparatus;when determining that a communication link between the first DC and the second DC is faulty, obtaining, by the first ABS apparatus, second status information, wherein the second status information is status information of a second service module in the second DC that is detected by the second ABS apparatus; andarbitrating, by the first ABS apparatus, a subsequent service providing capability of the first DC based on the first status information and the second status information.22. The method according to claim 21 , wherein:the first DC further comprises a first data synchronization module, the second DC further comprises a second data synchronization module, the first data synchronization module is connected to a third data synchronization module in a third DC, the second data synchronization module is connected to the third data synchronization module, and data synchronization is implemented among the first data synchronization module, the second data ...

DATA CENTER FAILURE MANAGEMENT IN AN SDN DEPLOYMENT USING SWITCHING NODE CONTROL

A data center failure management system and method in a Software Defined Networking (SDN) deployment. In one embodiment, an SDN controller associated with the data center is configured to learn new flows entering the data center and determine which flows require flow stickiness. Responsive to the determination, the SDN controller generates commands to one or more switching nodes and/or one or more border gateway nodes to redirect the sticky flows arriving at the switching nodes via ECMP routes from the gateway nodes or avoid the ECMP routes by the gateway nodes in order to overcome certain failure conditions encountered in the data center, an external network, or both. 1. A method operating at a Software Defined Networking (SDN) controller associated with a data center having a plurality of switching nodes coupled in a data center network fabric to a plurality of gateway nodes , the method comprising:receiving a first packet of a packet flow from a first switching node coupled to a service instance hosted by the data center, the packet flow having with an n-tuple identifier set and flowing from a gateway node pursuant to a subscriber session via an external network;determining that the packet flow requires flow stickiness with respect to the subscriber session; andresponsive to the determining, programming each switching node other than the first switching node to redirect any packets of the packet flow received by the switching nodes to the first switching node, the packets arriving at the switching nodes from at least a subset of the plurality of gateway nodes according to respective Equal Cost Multi Path (ECMP) routing paths.2. The method as recited in claim 1 , wherein each switching node is programmed by the SDN controller to redirect the packets of the packet flow by sending one or more OpenFlow specification match-action rules to the switching nodes that identify the first switching node as a destination node.3. The method as recited in claim 1 , further ...

METHOD AND APPARATUS FOR MANAGING THE INTERCONNECTION BETWEEN NETWORK DOMAINS

A control protocol is run in the interconnect region between network domains so that the interconnect region may be managed using a separate control plane. According to an embodiment of the invention, a spanning tree protocol is used to establish a separate spanning tree within the interconnect region. To avoid loop formation within the interconnect region, links interconnecting adjacent edge nodes that are part of the interconnect region and which belong to a given domain are allowed to pass control frames but not data frames. OAM may be used detect link failure of a link between adjacent nodes on a given domain. 1. A method of managing an interconnect region between a first network domain and a second network domain , the interconnect region comprising a first network element and a second network element connecting the interconnect region to the first network domain and a plurality of links extending between the first network domain and the second network domain , the method comprising:establishing a control protocol instance in the interconnect region, the control protocol instance allowing at most one link of the plurality of links extending between the first network domain and the second network domain to be selected as an active link for a Virtual Local Area Network (VLAN) with remaining links being inactive for the VLAN;establishing an Operation, Administration and Maintenance (OAM) management entity between the first network element and the second network element;transmitting a plurality of OAM frames by the first network element on the OAM management entity over the active link between the first network domain and the second network domain, the plurality of OAM frames being addressed to the second network element;monitoring the plurality of OAM frames at the second network element; anddetermining that at least one of the plurality of OAM frames received at the second network element is one of the plurality of OAM frames transmitted by the first network ...

NETWORK MANAGEMENT METHOD, NETWORK SYSTEM, AGGREGATED ANALYSIS APPARATUS, TERMINAL APPARATUS AND PROGRAM

An aggregated analysis apparatus receives, from one or more terminal apparatuses connecting to a network, path information from an individual terminal apparatus to a destination node, acquired by the individual terminal apparatus, and isolates, by using a learning model, a suspected failure location on the network based on the path information. 1. A network management method comprising:acquiring, by a terminal apparatus that connect to a network, path information from the terminal apparatus to a destination node to store the path information; andperforming failure analysis stage on the network, whereinthe performing failure analysis comprises:receiving the path information from one or a plurality of the terminal apparatus; andisolating, by using a learning mode, a suspected failure location on the network, based on the path information received.2. The network management method according to claim 1 , comprising:the terminal apparatus further acquiring at least one of:transmission delay information between the terminal apparatus and the destination node; andsuccess or failure information on communication with the destination node; andin performing the failure analysis on the network,receiving, from the terminal apparatus, in addition to the path information, at least one of the transmission delay information and the success or failure information on communication with the destination node and isolating the suspected failure location on the network, based on information received in addition to the path information, by using the learning model.3. (canceled)4. A aggregated analysis apparatus comprising:a processor;a memory storing program instructions executabel by the processor; anda recever that receives, from one or a plurality of terminal apparatuses connecting to a network, path information from an individual terminal apparatus to a destination node, the path information acquired by the the individual terminal apparatus,wherein that the processor is configured to ...

AUTOMATION LOGIC TO PROACTIVELY ISOLATE LAYER 1 FAULTS IN A LEASED UNMONITORED NETWORK

A comprehensive integrated system and method includes (i) proactively monitoring a network for degraded service and to proactively make repairs to components before service outages, (ii) identifying the root causes of hard alarms and failures on a layer 1 transport network and generate trouble tickets; and (iii) after repair, verifying that repaired backbone network meets or exceeds performance criteria of Service Level Agreements (SLAs) with customers. A method includes surveilling first equipment in a network wherein the first equipment is in a controlled portion of the network, observing a set of messages wherein the set of messages relate to second equipment in a leased portion of the network, and detecting a fault in the network based on the surveilling step or the observing step. A fault based on the observing step includes the steps of receiving a first message at a first server indicating that a fault was detected in a portion of a leased network, receiving a second message at a second server indicating that the fault was detected in a portion of the leased network, and isolating the fault based on the first message and the second message. 1. A method comprising:receiving a first message at a first server indicating that a fault was detected in a leased network;receiving a second message at a second server indicating that the fault was detected in the leased network; andisolating the fault based on the first message and the second message.2. The method of claim 1 , wherein the first and second servers are in a controlled network connected with the leased network claim 1 , wherein the first message is a Line Alarm Indication Signal (LAIS) message and the second message is a first Path Alarm Indication Signal (PAIS) message and the isolating identifies the fault occurred in a portion of the leased network upstream of the second server.3. The method of claim 2 , further comprising receiving a third message at the first server and further isolating the fault ...

A method of micro-service transformation for power trading functions

It involves the field of power trading technology and a method for microservice transformation of power trading function comprising the following steps: (1) divide the function in extranet trading cloud into many multiple individual micro services and divide the function in intranet trading cloud into multiple individual micro services; (2) register a node information for each individual micro service in service registry when service deployment starts; (3) extranet users and intranet users enter into extranet trading cloud and intranet trading cloud respectively through PC terminal or mobile terminal, obtain the actual network address that needs to be served from service registry, send a request to the requested service, and perform related business operation. 1. A method for microservice transformation of power trading function comprising the following steps:(1) dividing function in extranet trading cloud into many multiple individual micro services and divide the function in intranet trading cloud into multiple individual micro services;(2) registering node information for each individual micro service in service registry when service deployment starts;(3) extranet users enter into extranet trading cloud through PC terminal or mobile terminal, obtain the actual network address that needs to be served from service registry, send a request to the requested service, and perform related business operation. Intranet users enter into intranet trading cloud and service registry through PC terminal, obtain the actual network address that needs to be served from service registry, send a request to the requested service, and perform related business operation.2. The method according to claim 1 , whereinin step (1), individual services including “bidding declaration” and trading result query” are included in extranet trading cloud;individual services including “trading sequence creation”, “communique release”, “biding declaration”, “bid opening”, “declared data verification ...

WEARABLE GROUP COMMUNICATION DEVICE BYPASS CONNECTIVITY

Upon detection of a failure of a communication link between a remote management system and a communication node, a bypass link is established. The remote management system evaluates whether additional communication nodes can act as a bypass for management communications between the remote management system and the communication node whose management communication link has failed. The remote management system instructs a selected bypass communication node to establish the bypass management communication link between the bypass node and the disconnected node whose management communication link has failed. Depending on the relationship between nodes, management communications sent using the bypass link may be secured. The bypass link in some implementations may include multiple bypass communication nodes linked together to provide a chain of bypass management communication links between the remote management system and the disconnected communication node. 1. A method of operating a remote management system , the method comprising:establishing a first management communication link between the remote management system and a first communication node;establishing a second management communication link between the remote management system and a second communication node;detecting a failure in the first management communication link;selecting the second communication node as a bypass communication node;transmitting instructions to establish a first bypass management communication link between the second communication node and the first communication node; andthe remote management system communicating with the first communication node through the first bypass management communication link.2. The method of wherein the first and second communication nodes are members of a first communication group.3. The method of wherein the first communication node is a member of a first communication node group and further wherein the second communication node is not a member of the first ...

Graceful failover of a principal link in a fiber-channel fabric

In one embodiment, detecting a failure mode of a first communication link on a first port, selecting a second communication link on a second port associated with the first port, and transmitting a profile information associated with the second port are provided.

Protection switching method and system provision by a distributed protection group

The present invention relates to a protection switching for use in a communication network, and more particularly, to a method and a system for protection switching provision by a distributed or extended protection group in a communication network. In one embodiment, this can be accomplished by defining a traffic bit (t-bit) on all the communication devices in the network, assigning at least one communication device as master node and other devices as slave node, determining a fault if continuity check message is not received in a predetermined time period between the master node and the traffic source, carrying of status information, reliably, between communication devices using existing protection or restoration methods, broadcasting by setting the bit ‘t’=1 (or ‘t’=0) by the master node to all other slave nodes thereby notifying about the fault (or clearance of fault) towards traffic source and receiving the traffic from the traffic source by the other available slave nodes when master node's link towards traffic source fails.

SELF-HEALING COMMUNICATIONS NETWORK

A self-healing communications network including a network bus that connects a plurality of field controllers. Each field controller is configured to operate an element of a system installed in a building or similarly large structure, and each is connected to the network bus. An end-of-line resistor can be automatically enabled in any field controller to designate that field controller as a terminal device on the network bus. In an embodiment, a parent controller detects each field controller on the network bus, and monitors and controls operation of the plurality of field controllers via commands transmitted over the network bus. The parent controller has first and second receiver/transmitter ports, both connected to the network bus. The parent controller is configured to automatically repair a break in the network bus by enabling at least one end-of-line resistor in one of the plurality of field controllers in order to properly terminate the network. 1. A self-healing communications network comprising:a network bus configured to connect a plurality of field controllers, each field controller configured to operate an element of a system installed in a building, wherein each field controller is connected to the network bus, and wherein an end-of-line resistor can be enabled in any particular field controller to designate that field controller as a terminal device on the network bus; anda parent controller configured to detect each of the plurality of field controllers connected to the network, the parent controller having a first receiver/transmitter port and a second receiver/transmitter port, each connected to the network bus and configured to monitor and control operation of the plurality of field controllers via commands transmitted over the network bus, the first receiver/transmitter port connected to a first end of the network bus, the second receiver/transmitter port connected to a second end of the network bus, the parent controller further configured to ...

SYSTEM ANALYZER AND METHOD FOR ANALYZING AN IMPACT OF A CHANGE IN A COMPONENT OF A DISTRIBUTED CONTROL SYSTEM

A system analyzer and a method for analyzing an impact of a change in a component of a distributed control system (DCS) are disclosed. The system can collect and store data representing the DCS components and their interconnection as well as signals of the DCS components. The DCS can be graphically modeled with nodes and directed edges, wherein a node represents either a type of DCS component or a signal of a DCS components, and wherein an edge is an “influence”-edge, or a “contains”-edge. Information on a change of a DCS components is received, a depth first or breadth first search is performed over the “influence”-edges and “contains”-edges and determine unchanged DCS components which would be affected by a malfunction, a removal or a taking out of operation of the at least one DCS component, and information on the affected DCS components is transmitted to an operator interface. 1. A system analyzer for analyzing an impact of a change in a component of a distributed control system (DCS) , the system analyzer comprising:a data collecting unit with data storage means for collecting and storing data representing DCS components and their interconnection;a model generating unit for modeling a DCS; anda model analyzing unit, wherein:the data collecting unit is configured to collect data from at least a network infrastructure tool and from a control logic tool, wherein the collected data includes data on signals which are generated, processed and/or transmitted by DCS components;the model generating unit is configured to model a DCS using a graphic representation with nodes and directed edges, wherein a node represents:either a type of a DCS component, with each type being defined to include at least network switches, routers, network cables, controllers, actuators and sensors;or a signal generated, processed and/or transmitted by a DCS component; and wherein:an edge belongs to one of two categories:an “influence”-edge which reflects that a change in a starting node of ...

UNCONSTRAINED SUPERVISOR SWITCH UPGRADE

In one example embodiment, a time unconstrained fabric switch software upgrade function is described for an in-switch-software-upgrade/downgrade (ISSU) in a network switch. Prior to an ISSU, Hello protocol data unit (PDU) information is stored for relevant control protocols of associated interfaces of the switch. The Hello PDU information comprises information on messages and data exchanged by the control protocols that may be used to maintain communications links of the switch. During the configuring of the ISSU, and while the control plane of the switch is, at least partially, dysfunctional, Hello PDUs are sent on the interfaces according to the stored PDU information in order to maintain the communication links. The Hello PDU information may include a time interval value for each relevant protocol that determines when Hello PDUs are sent. 1. A method , comprising:storing protocol data unit information for a control protocol associated with an interface;performing an in-switch-software upgrade/downgrade (ISSU); andsending hello protocol data units (PDUs) on the interface according to the protocol data unit information while an associated control plane is, at least partially, dysfunctional.2. The method of claim 1 , further comprising:determining that the control plane is, at least partially, restored; andterminating the sending of the Hello PDUs.3. The method of claim 1 , wherein the protocol data unit information comprises a time interval value and the sending comprises:sending a first Hello PDU and initiating a timer; andsending another Hello PDU when the time interval value has transpired on the timer.4. The method of claim 1 , wherein the storing comprises:scanning a link state database for the control protocol; andwriting protocol data unit information in at least one interface protocol record for the control protocol on a per logical port basis in a record file.5. The method of claim 4 , wherein the storing further comprises:writing protocol data unit ...

Controller side method of generating and updating a controller assignment list

Some embodiments provide a novel method for distributing control-channel communication load between multiple controllers in a network control system. In some embodiments, the controllers manage physical forwarding elements that forward data between several computing devices (also called hosts or host computers), some or all of which execute one or more virtual machines (VMs). The method of some embodiments distributes a controller assignment list to the host computers. The host computers use this list to identify the controllers with which they need to interact to perform some of the forwarding operations of their associated logical forwarding elements. In some embodiments, agents executing on the host computers (1) review the controller assignment list to identify the appropriate controllers, and (2) establish control channel communications with these controllers to obtain the needed data for effectuating the forwarding operations of their associated physical forwarding elements. These agents in some embodiments are responsible for out-of-band control channel communication with the controllers.

ROUTE UPDATING USING A BFD PROTOCOL

Examples disclosed herein relate to a method comprising detecting, by a bi-directional forwarding detection (BFD) protocol, a link failure of a link associated with a network device on a network. The method may include notifying, by the BFD protocol, a routing protocol and a hardware plugin about the link failure and identifying, by the routing protocol, an updated route for the network that does not include the network device. The method may also include deleting, by the hardware plugin, any routes programmed into a forwarding information base (FIB) including the first network device upon receiving the notification from the BFD protocol and installing, by the hardware plugin, the updated route into the FIB to be used for forwarding network traffic on the network. 1. A method comprising:detecting, by a bi-directional forwarding detection (BFD) protocol, a link failure of a link associated with a network device on a network;notifying, by the BFD protocol, a routing protocol and a hardware plugin about the link failure, wherein the routing protocol and hardware plugin are notified simultaneously;identifying, by the routing protocol, an updated route for the network that does not include the network device;deleting, by the hardware plugin, any routes programmed into a forwarding information base (FIB) including the first network device upon receiving the notification from the BFD protocol; andinstalling, by the hardware plugin, the updated route into the FIB to be used for forwarding network traffic on the network.2. The method of comprising:removing, by the routing protocol, any routes in a routing table manager (RTM) that include the network device, upon receiving the notification from the BFD protocol.3. The method of wherein the updated route is one of a plurality of updated routes determined before the link failure has been detected.4. The method of claim wherein the updated route is determined using a fast reroute routing technique.5. The method of wherein the ...

Addressing radio link failures in wireless communication systems

Methods and apparatus for enhanced radio resource control (RRC) reestablishment in a communication system include addressing repeated radio link failures (RLFs). For example, the methods and apparatus include incrementing a counter value associated with a first cell based on a detection of a RLF by a user equipment (UE) in a RRC connected state with the first cell. The methods and apparatus further include determining that the counter value meets or exceeds a first barring threshold value within a cell barring evaluation time duration. Additionally, the methods and apparatus include prohibiting the UE from performing an RRC reestablishment procedure with the first cell for a first barring time duration.

Failure isolation method and management server for failure isolation

The failure isolation method includes: a first step of performing a predetermined action for the monitoring target, collecting a failure event which is a result of the action, applying the failure event to a failure cause analysis rule, and narrowing down the root cause events together with certainty factors; a second step of determining whether the root cause event and the certainty factor narrowed down in the first step satisfy a predetermined requirement and whether the narrowing-down has been completed; and a third step of, when it is determined in the second step that the narrowing-down has not been completed, performing a predetermined additional action for the monitoring target, collecting an additional failure event which is a result of the additional action, applying the additional failure event to the failure cause analysis rule, and narrowing down the root cause events together with the certainty factors.

INFORMATION TRANSMISSION, SENDING, AND ACQUISITION METHOD AND DEVICE

An information transmission, sending, and acquisition method and device. A method includes: using a master and slave relay terminal in an information relay terminal pair at the head of an information relay terminal pair queue to synchronously receive information sent by a sending terminal, and using the master relay terminal to transmit information to a receiving terminal; when a fault occurs in the master or slave relay terminal at the head of the queue, stopping using the master and slave relay terminals to receive information, and deleting the information relay terminal pair from the queue; after the slave or master relay terminal in the deleted terminal pair transmits all the information to the receiving terminal and the fault of the master or slave relay terminal is removed, inserting the terminal pair to the tail of the queue; and meanwhile, when the fault occurs in the master or slave relay terminal, using the next adjacent terminal pair to continue receiving the information. The invention implements strictly-ordered and efficient information transmission. 1. A method for transmitting information , the method comprising:using a master transfer terminal and a slave transfer terminal in an information transfer terminal pair arranged at a head of an information transfer terminal pair queue to synchronously receive information sent by an information sending terminal, and using the master transfer terminal to transmit the information to an information receiving terminal, at least two information transfer terminal pairs being arranged in the information transfer terminal pair queue according to a preset sequence;stopping using the master transfer terminal and the slave transfer terminal in the information transfer terminal pair at the head of the queue to receive information when a fault occurs in the master or slave transfer terminal in the information transfer terminal pair at the head of the queue, deleting the information transfer terminal pair at the head of ...

Adaptive Private Network with Path Maximum Transmission Unit (MTU) Discovery Process

Systems and techniques are described for a path maximum transmission unit (MTU) discovery method that allows the sender of IP packets to discover the MTU of packets that it is sending over a conduit to a given destination. The MTU is the largest packet that can be sent through the network along a path without requiring fragmentation. The path MTU discovery method actively probes each sending path of each conduit with fragmentation enabled to determine a current MTU and accordingly increase or decrease the conduit MTU. The path MTU discovery process is resilient to errors and supports retransmission if packets are lost in the discovery process. The path MTU discovery process is dynamically adjusted at a periodic rate to adjust to varying network conditions.

Controller communications in access networks

Control plane management based on the physical topology of nodes in software-defined networks (SDNs) is provided. A tree structure in an SDN such as an access network is identified. Control plan management is provided using the tree structure. A controller configures changes in the SDN and provides notifications to other controllers after configuring devices under its control. A controller prioritizes the status of downstream and/or upstream devices based on a type or direction of data flow when making configuration decisions. A controller provides notifications to other controllers by prioritizing notifications based on the hierarchical position of devices.

Rerouting bus data signals from faulty signal carriers to existing healthy signal carriers

A first set of signal carriers of a plurality of signal carriers may be determined to be faulty. The first set of signal carriers may be for transmitting a first set of respective lane signals of a plurality of lane signals. A second set of signal carriers of the plurality of signal carriers may be identified as not faulty. The second set of signal carriers may be for transmitting a second set of lane signals of the plurality of lane signals. Based on the determining and identifying, one or more of the first set of lane signals may be routed from the first set of signal carriers through a first subset of the second set of signal carriers, the routing of the one or more of the first set of lane signals may cause a bandwidth capacity to increase to a highest available bandwidth.

Systems and methods for traffic load balancing on multiple wan backhauls and multiple distinct lan networks

In accordance with embodiments disclosed herein, there are provided methods, systems, mechanisms, techniques, and apparatuses for traffic aggregation on multiple Wide Area Network (WAN) backhauls and multiple distinct Local Area Network (LAN) networks; for traffic load balancing on multiple WAN backhauls and multiple distinct LAN networks; and for performing self-healing operations utilizing multiple WAN backhauls serving multiple distinct LAN networks. For example, in one embodiment, a first Local Area Network LAN access device is to establish a first LAN; a second LAN access device is to establish a second LAN; a first Wide Area Network WAN backhaul connection is to provide the first LAN access device with WAN connectivity; a second WAN backhaul connection to provide the second LAN access device with WAN connectivity; a management device is communicatively interfaced with each of the first LAN access device, the second LAN access device, the first WAN backhaul connection, and the second WAN backhaul connection; and the management device routes a first portion of traffic originating from the first LAN over the first WAN backhaul connection and routes a second portion of the traffic originating from the first LAN over the second WAN backhaul connection.

SYSTEMS AND METHODS FOR RAPID FAILURE DETECTION IN FIBRE CHANNEL OVER ETHERNET NETWORKS

An information handling system is provided herein. The information handling system includes a central processor in communication with a network processor, a plurality of ports coupled to the network processor for sending and receiving Fibre Channel over Ethernet (FCoE) frames, and an Ethernet controller in communication with a physical connector and with the central processor. The information handling system further includes a management controller configured to communicate with a management system through the Ethernet controller to report a failure to be mitigated by temporarily stopping inputs and outputs on a coupled network device. Associated methods and computer-readable media having associated instructions are also provided herein. 1. An information handling system comprising:a central processor in communication with a network processor;a plurality of ports coupled to the network processor for sending and receiving Fibre Channel over Ethernet (FCoE) frames;an Ethernet controller in communication with a physical connector and with the central processor; anda management controller configured to communicate with a management system through the Ethernet controller to report a failure to be mitigated by temporarily stopping inputs and outputs on a coupled network device.2. The information handling system of claim 1 , wherein the failure is a central processor failure claim 1 , a network processor failure claim 1 , or a failure detected at one of the plurality of ports.3. The information handling system of claim 1 , wherein the management system is an out-of-band management system.4. The information handling system of claim 1 , wherein the management controller includes a memory claim 1 , the memory containing a topology of a network comprising the information handling system.5. The information handling system of claim 1 , wherein the management system communicates information regarding the failure to a plurality of network devices in a network that includes the ...

APPARATUS AND METHOD FOR INTERCONNECTING MULTIPLE LINEAR PROTECTION DOMAINS

A linear protection switching-based domain connecting method includes determining, by a protection interconnecting node, a user traffic transceiving path based on information on a presence or absence of defect in working paths and protection paths, generating working path control information and protection path control information based on information on the determined user traffic transceiving path and the information on the presence or absence of the defect in the protection paths, and transmitting the generated working path information to the working interconnecting node, and connecting two paths among the protection paths, and the connection path based on the protection path control information. 1. A working interconnecting node apparatus , comprising:an operations, administration, and maintenance (OAM) 1 connected to a working path i and configured to monitor a presence or absence of a defect in the working path i;an OAM 2 connected to a working path i+1 and configured to monitor a presence or absence of a defect in the working path i+1;an OAM 3 connected to a connection path i connecting a working interconnecting node and a protection interconnecting node paired with the working interconnecting node, and configured to monitor a presence or absence of a defect in the connection path i;an end interconnection controller configured to transmit information on the presence or absence of the defect received from the OAM 1, the OAM 2, and the OAM 3 to the protection interconnecting node, and transfer working path control information received from the protection interconnecting node to a working path connector; andthe working path connector configured to connect two paths among the working path i, the working path i+1, and the connection path i based on the working path control information.2. The working interconnecting node apparatus of claim 1 , wherein claim 1 , when the working path control information is not received from the protection interconnecting node due to ...

BFD OVER VxLAN ON vPC UPLINKS

Disclosed are systems, methods, and computer-readable storage media for synchronizing the secondary vPC node to the primary vPC node in a BFD protocol over a VxLAN channel with a remote node. In some embodiments of the present technology a primary vPC node can receive a packet from the remote node. The primary vPC node can then determine the packet includes either a MAC address corresponding to the primary vPC node or a secondary vPC node, and at least one inner packet identifier. Additionally, the primary networking switch can identify an access control list (ACL) entry from a set of ACL entries based on the at least one inner packet identifier. Subsequently, based on the ACL entry, the primary vPC node can generate a copy of the packet. After which, the primary vPC node can transmit the packet to the secondary vPC node. 1. A method , comprising:receiving, by a primary virtual port channel (vPC) node, a packet from a remote node;generating, by the primary vPC node, a copy of the packet; andbased on a MAC address of the packet and after generating a copy of the packet, transmitting, by the primary vPC node to a secondary vPC node, the packet;receiving, by the primary vPC node in response to the transmitting, a second packet;authorizing, by the primary vPC node in response to determining the secondary vPC node generated a copy of the second packet, receipt of the second packet; andrestricting by the primary vPC node in response to determining the secondary vPC node did not generate a copy of the second packet, receipt of the second packet.2. The method of claim 1 , further comprising:determining, by the secondary vPC node, the primary vPC node generated a copy of the packet.3. The method of claim 1 , wherein the primary vPC node and the secondary vPC node include MAC addresses of both the primary vPC node and the secondary vPC node.4. The method of claim 1 , further comprising:receiving, by the primary vPC node and from a second remote node, a second packet; ...

N-WAY VIRTUAL PORT CHANNELS USING DYNAMIC ADDRESSING AND MODIFIED ROUTING

Systems, methods, and non-transitory computer-readable storage media for dynamic addressing of virtual port channels is described. In some implementations, a virtual IP address can be dynamically generated based on which links in a virtual port channel are active. If the numbers of active links in the virtual port channel changes, the virtual IP address can be dynamically changed. The virtual IP address can be dynamically adjusted by changing the values of individual bits in the virtual IP address that correspond to links in the virtual port channel. The virtual IP address can be used as a tunnel end point address in a VXLAN environment. 1. A method comprising:receiving, at a first network device, link state information from one or more second network devices in a virtual port channel peer group, the virtual port channel peer group including a plurality of network devices configured for a virtual port channel;setting, by the network device, a value of one or more bits in a virtual internet protocol address based on the received link state information; andadvertising, by the network device, the virtual internet protocol address for the virtual port channel.2. The method of claim 1 , wherein the network device is configured with a virtual port channel peer group identifier.3. The method of claim 2 , wherein the virtual internet protocol address includes the virtual port channel peer group identifier.4. The method of claim 1 , wherein each of the one or more bits corresponds to a network device in the virtual port channel peer group.5. The method of claim 4 , wherein the value of each of the one or more bits is set based on a state of a link to a host device provided by the corresponding network device.6. The method of claim 1 , further comprising:generating a new internet protocol address for the virtual port channel when new link state information is received that indicates a change in a link state of one of the network devices.7. The method of claim 5 , further ...

LOOP DETECTION AND REPAIR IN A MULTICAST TREE

Systems, methods and transitory computer-readable storage media for detecting one or more loops in a multicast tree. The method includes calculating a multicast tree radius for a first multicast tree, the multicast tree radius representing a maximum number of hops from a root node to a furthest edge node in the first multicast tree, forwarding, by the root node, a first packet to each edge node within the first multicast tree, the first packet having a time-to-live (TTL) value equal to twice the first multicast tree radius, receiving, at the root node, a copy of the forwarded first packet, and determining an existence of a loop in the first multicast tree based at least upon receiving the copy of the forwarded first packet. 1. A method comprising:calculating a multicast tree radius for a first multicast tree, the multicast tree radius representing a maximum number of hops from a root node to a furthest edge node in the first multicast tree;forwarding, by the root node, a first packet to each edge node within the first multicast tree, the first packet having a time-to-live (TTL) value equal to twice the first multicast tree radius;receiving, at the root node, a copy of the forwarded first packet; anddetermining an existence of a loop in the first multicast tree based at least upon receiving the copy of the forwarded first packet.2. The method of claim 1 , wherein determining the existence of a loop in the first multicast tree further comprises receiving a notification from a particular edge node in the first multicast tree claim 1 , the notification indicating that the particular edge node detected the TTL value of the first packet equal to zero.3. The method of claim 1 , further comprising:forwarding, by the root node, a second packet to each edge node within a second multicast tree, the second packet having a TTL value equal to twice a second multicast tree radius, the second packet having a signature different from the first packet; anddetermining an existence of ...

SYSTEM AND METHOD FOR TROUBLESHOOTING A SET TOP BOX

A method and system for troubleshooting a media processor is disclosed and can include receiving a trouble ticket from a media processor and initiating a self-test at the media processor. The method and system can include receiving test results from the media processor and analyzing the test results to isolate a problem. 1. A method comprising:receiving, by a processing system including a processor, a trouble ticket, wherein the trouble ticket indicates a malfunction of a media processor;transmitting, by the processing system, a first self-test command to the media processor;obtaining, by the processing system, first test results from the media processor, wherein the media processor implements a first self-test according to the first self-test command, and wherein the media processor generates the first test results in response to implementing the first self-test;identifying, by the processing system, the malfunction in response to analyzing, by the processing system, the first test results, wherein analysis of the first test results includes determining that a test has failed resulting in a failed test, and wherein the failed test indicates the malfunction; andrepairing, by the processing system, the malfunction.2. The method of claim 1 , comprising:transmitting, by the processing system, a second self-test command to the media processor; andreceiving, by the processing system, second test results, wherein the second test results indicates passing of the test.3. The method of claim 1 , comprising indicating claim 1 , by the processing system claim 1 , to a user that the malfunction has been isolated.4. The method of claim 1 , comprising indicating claim 1 , by the processing system claim 1 , to a user that the malfunction has been repaired.5. The method of claim 1 , wherein the first test results are displayed by the media processor.6. The method of claim 1 , wherein transmitting the first self-test command comprises transmitting claim 1 , by the processing system ...

METHOD AND APPARATUS FOR MANAGING IDENTIFIERS OF A MULTIPLE WANS NETWORK DEVICE

The method and apparatus of the present invention concern the enablement and disablement of at least one identifier of a network device, which is capable of allowing connecting to a plurality of wide area network (WAN) connections through at least one wireless local area (WLAN) network connection. When a first WAN network connection does not meet at least one condition, the at least one corresponding identifier of said first WAN network connection are disabled and other identifiers not corresponding to said first WAN network connection are not affected. When first WAN network connection meets all said conditions again, said at least one corresponding identifier of said first WAN network connection are enabled again. 1. A method for managing a network device , wherein said network device has a plurality of wide area network (WAN) interfaces and at least one wireless local area network (WLAN) interface , comprising: monitoring WAN network connections in said plurality of WAN interfaces periodically; when a first WAN network connection does not meet at least one condition , disabling at least one corresponding identifier of said first WAN network connection , wherein first WAN network connection is one of said WAN network connections; when said first WAN network connection meets all conditions , enabling corresponding disabled at least one identifier.2. The method of claim 1 , further comprising responding to request received through said at least one corresponding identifier with a message for a pre-defined period of time before disabling said at least one corresponding identifier.3. The method of claim 2 , wherein said message is a web page.4. The method of claim 1 , further comprising not broadcasting said at least one corresponding identifier when said first WAN network connection does not meet said at least one condition.5. The method of claim 1 , further comprising broadcasting said at least one corresponding identifier when said first WAN network connection ...

REROUTING BUS DATA SIGNALS FROM FAULTY SIGNAL CARRIERS TO EXISTING HEALTHY SIGNAL CARRIERS

A first set of signal carriers of a plurality of signal carriers may be determined to be faulty. The first set of signal carriers may be for transmitting a first set of respective lane signals of a plurality of lane signals. A second set of signal carriers of the plurality of signal carriers may be identified as not faulty. The second set of signal carriers may be for transmitting a second set of lane signals of the plurality of lane signals. Based on the determining and identifying, one or more of the first set of lane signals may be routed from the first set of signal carriers through a first subset of the second set of signal carriers, the routing of the one or more of the first set of lane signals may cause a bandwidth capacity to increase to a highest available bandwidth. 1. A system comprising:at least one computing device having at least one processor; and route a plurality of lane signals through a plurality of signal carriers;', 'in response to the routing, open, via a first demultiplexer, a plurality of communication channels from a first set of lane signals of the plurality of lane signals, to each of a plurality of multiplexers, the each of the plurality of multiplexers being assigned to a particular set of the plurality of signal carriers, wherein the first set of lane signals have a capability to be re-routed to any of the plurality of signal carriers upon a fault associated with a first set of signal carriers;', 'determine that the first set of signal carriers of the plurality of signal carriers are faulty, the first set of signal carriers for transmitting or receiving the first set of lane signals of the plurality of lane signals, the plurality of signal carriers forming a plurality of sequentially ordered lanes, the plurality of lanes comprising a link for use in intercommunication between two or more endpoints of a computing device;', 'identify a second set of signal carriers of the plurality of signal carriers that are not faulty, the second set ...

MBMS SESSION RESTORATION IN EPS FOR PATH FAILURE

Restoration procedures in a Multimedia Broadcast Multicast Service (MBMS) network (also referred to as evolved MBMS (eMBMS) network) in case of a path failure. 1. A method in a control plane node for restoring a Multimedia Broadcast Multicast Service (MBMS) session after path failure , comprising:receiving an MBMS session start request from a network node;sending an MBMS session start request to a Multi-cell/Multicast Coordination Entity, MCE;receiving an MBMS session start response from the MCE; andsending an MBMS session start response to the network node acknowledging the receipt of the MBMS session start request.2. The method of claim 1 , wherein the MBMS session start request sent to the MCE comprises a re-establishment flag enabling the MCE to differentiate the restoration procedure from other procedures.3. The method of claim 1 , wherein the MBMS session start request sent to the MCE comprises a re-establishment flag enabling the MCE to know that it may accept the MBMS session start request.4. The method of claim 1 , wherein the MBMS session start request sent to the MCE comprises a re-establishment flag enabling the MCE to differentiate whether it is an error so it may reject the MBMS session start request or whether it is a restoration procedure so it may accept the MBMS session start request.5. The method of claim 2 , wherein the MBMS session start request comprises a counter enabling handling of a latest MBMS session start request in case a subsequent same type of path failure takes place.6. A method in a Multi-cell/Multicast Coordination Entity (MCE) for restoring a Multimedia Broadcast Multicast Service (MBMS) session after path failure where the MBMS session already exists on the MCE claim 2 , the method comprising:receiving a MBMS session start request comprising a re-establishment flag for the MBMS session from an alternative control plane node; andre-establishing the MBMS session with the alternative control plane node.7. The method of claim 6 , ...

Method and system for enabling device-to-device communication

Mobile communication devices, such as user equipment (UE) using 3GPP-LTE or LTE Advanced, may communicate directly with another UE through a system called Device-to-Device (D2D) communication. The establishment of a D2D communication session may involve having one of the UEs trigger the signaling procedures. In particular, a D2D resource re-allocation method may be used to optimize the D2D communication resource utilization efficiency in a dynamic manner, which is fully controlled by one of the D2D pair (termed the master UE or M-UE). The M-UE may be arranged to re-allocate resources based on the buffer status report (BSR) of the UEs in the D2D communication session. The M-UE may be further arranged to dynamically change the configuration of the transmission window based on characteristics of the D2D communication session.

Modular System Awareness in Virtualized Information Handling Systems

Methods and systems for modular system awareness in virtualized information handling systems (IHSs) include generating, by a chassis management controller (CMC), dependency information indicating which ones of modular IHSs included in a chassis are dependent on individual shared components in the chassis. When a fault occurs at one of the shared components, the CMC may determine, using the dependency information, which particular ones of the modular IHSs are operationally dependent on the fault. The CMC may send information indicative of the fault and of the dependent modular IHSs to a virtual machine manager, which may generate a ranking of virtual machines. The virtual machine manager may use the rankings to make migration decisions for virtual machines among modular IHSs. 1. A modular information handling system chassis , comprising:a plurality of slots for receiving modular information handling systems; and generate dependency information for a plurality of modular information handling systems included in a first modular information handling system chassis, wherein the dependency information indicates which ones of the modular information handling systems are respectively associated with components included in the first modular information handling system chassis;', 'when a fault occurs in the first modular information handling system chassis, determine, based on the dependency information, dependent modular information handling systems for the fault, wherein a dependent modular information handling system operates in dependency to a component associated with the fault;', 'responsive to the fault, change an operating status of the dependent modular information handling systems from a first operating status to a second operating status; and', 'output a notification of the fault, the second operating status, and respective identifiers for the dependent modular information handling systems to a virtual machine manager., 'a chassis management controller comprising a ...

PREVENTING CORRUPTION BY BLOCKING REQUESTS

A method and system for managing communication connections in a virtualization environment implemented by a cluster of host machines, each of the host machines comprises a hypervisor, at least one user virtual machine (UVM), a connection manager, and an I/O controller. The system includes a virtual disk accessible by all of the I/O controllers and comprising a plurality of storage devices. The system includes a first host machine of the host machines designated as a leader node, wherein the leader node configured to confirm a second one of the host machines is unreachable; and transmit, in response to the confirmation, an update message to other host machines in the cluster. The update message identifies the unreachable host machine and causes the other host machines to block messages from the unreachable host machine and send an acknowledgement of the update message back to the leader node. 1. A system comprising: send a first request to a second host machine to establish a connection between the first host machine and the second host machine, wherein the first request is sent after a third host machine has determined that the first host machine is unreachable and requested the second host machine to block requests from the first host machine;', 'upon the first request going unanswered for a first time period, suspend operation of the first host machine for a second time period; and', 'upon at least one additional request going unanswered, permanently shut down operation of the first host machine, wherein the at least one additional request is sent to the second host machine after the second time period has expired., 'a first host machine comprising a memory to store programmed instructions, which when executed by a processor of the first host machine cause the processor to2. The system of claim 1 , wherein the at least one additional request comprises a predetermined number of requests claim 1 , and wherein the first host machine comprises programmed instructions ...