Lokales Netzwerk mit Sterntopologie.

MULTIPLEX-SCHALTUNGSANORDNUNG, INSBESONDERE FUER DIE ANSTEUERUNG VON VERBRAUCHER-STATIONEN IN KRAFTFAHRZEUGEN

To obtain a reliable multiplex circuit arrangement, in particular for controlling consumer stations in motor vehicles, which comprises a bus system, the end of each data line (LD) has a bidirectional bus coupling network (station network SN or electricity distribution supply network VN) comprising two analog amplifiers (OP1, OP2) connected in opposition. At least several central bus coupling networks (electricity distribution supply networks VN) are assembled to form a star-shaped central bus electricity distribution arrangement (ZVA).

Netzwerksystem

VERFAHREN UND VORRICHTUNG ZUR ÜBERPRUFUNG EINER ÜBERWACHUNGSFUNKTION EINES BUSSYSTEMS UND BUSSYSTEM

Datenbussystem mit Mitteln zur Ressourcensteuerung und Übertragungsstation

Operating method for data bus with several subscribers connected together via a star coupler e.g. vehicle CAN bus

The method involves synchronizing the subscriber terminals with a synchronization pulse; messages are transmitted by subscriber terminal using a hierarchical transmission sequence. The transmission start point for messages is set by adaptation elements so that they are independent of the partic. subscriber terminal and only dependent on the transmission sequence.

DATENBUS FÜR MEHRERE TEILNEHMER

STERNFÖRMIGES NETZ FÜR DIE DATENKOMMUNIKATION ZWISCHEN STATIONEN.

Netzwerkanordnung und Adressierung von Netzwerkkomponenten für einen Ladepark

Die Erfindung betrifft eine Netzwerkanordnung für einen Ladepark zur Bereitstellung von IP-Diensten an den Ladepark, wobei der Ladepark eine Mehrzahl von Komponenten umfasst, wobei die Netzwerkanordnung ein Kern-Netzwerk, einen Backend-Server und ein zentrales Gateway, das mit dem Kern-Netzwerk und dem Backend-Server gekoppelt ist und jeweils eine Schnittstelle für einen oder mehrere Kommunikations-Knoten des Kern-Netzwerks bereitstellt, umfasst, wobei die Komponenten des Ladeparks über das Kern-Netzwerk miteinander und mit dem zentralen Gateway in kommunikativer Verbindung stehen, wobei jeder Komponente des Ladeparks ein Kommunikations-Knoten des Kern-Netzwerkes zugeordnet ist, wobei die jeweiligen Komponenten des Ladeparks über die jeweils ihnen zugeordneten Kommunikations-Knoten und den jeweils den Kommunikations-Knoten zugeordneten Schnittstellen über das zentrale Gateway mit dem Backend-Server Daten austauschen können. Ferner betrifft die Erfindung ein Verfahren zu einer Adressierung ...

Method and apparatus for routing and forwarding between virtual routers within a single network element

Method and apparatus for routing and forwarding between virtual routers within a single network element

STORAGE STAR NETWORK

Need-based filtering for rapid selection of devices in a tree topology network

LOCAL AREA NETWORK

A portable communications hub having a detachable cellular transceiver and communication ports for connecting devices to the hub

A portable communications hub 10 is provided having a plurality of interconnected communication ports 30, 32, 34 for connection to a telephone, a fax machine and a computer network. Communication over a local cellular network is provided through the communication ports 30, 32, 34 and a detachable transceiver, e.g. wireless dongle 20, connected to a cellular network port 18 with all communication made through the hub 10 being chargeable to a single user account. Additional USB ports 28 may be provided for connecting mice, printers, keyboards, cameras and flash drives to the hub 10. An LCD 22 may be disposed on the top surface of the hub 10 to convey information relating to the communications that pass through the hub 10. The hub 10 facilitates the rapid establishment of office facilities, provided that a cellular network is proximate.

Method and apparatus for configuration of stackable units in packet-based communication systems

SYSTEM AND PROCEDURE FOR THE REMOTE SUPPLY OF A TELECOMMUNICATIONS PLANT

TONER GENERATION SYSTEM

CALL DEVICE

TO NETWORK-ACCESSIBLE MEMORY ELEMENT, TO NETWORK-ACCESSIBLE TO MEMORY MODULE, NETWORK MEMORY SYSTEM AND STORAGE AREA NETWORK

PROCEDURE FOR MULTI-CHANNEL THE OPERATIONAL FUND RESERVATION IN A WIRELESS MESH NETWORK

PROCEDURE FOR THE INSTALLATION OF A HIERARCHICAL NETWORK

SECTOR BASIS STATION

PROCEDURE FOR THE MONITORING LIABILITIES OF AN OPTICAL NETWORK USING CONTROL MEMBERS

DATENÜBERTRAGUNGSSYSTEM AND PROCEDURE FOR THE OPERATION OF A DATENÜBERTRAGUNGSSYSTEMS

DATA COMWARE AND - SYSTEM WITH VIRTUAL HAVEN

DEVICE AND JUNCTION CASE FOR LOCAL AREA NETWORK

PROCEDURE AND SYSTEM FOR THE RECOGNITION OF COLLISIONS IN A COMMON MEDIUM.

VSAT SATELLITE COMMUNICATION SYSTEM

TRANSMISSION METHOD BETWEEN MODULES IN A SYSTEM

Verfahren zur Übertragung von Nachrichten in einem Computernetzwerk sowie Computernetzwerk

The invention relates to a method for transmitting messages in a computer network and to a computer network, wherein the computer network comprises a first set of computing nodes (101 - 105), which computing nodes (101 - 105) are connected to each other by means of at least one star coupler (201, 202) and/or at least one multi-hop network (1000), wherein each computing node of the first set of computing nodes (101 - 105) is connected to the at least one star coupler (201, 201) or the at least one multi-hop network (1000) by means of at least one communication line (110), and wherein the computing nodes (101 - 105) exchange Ethernet messages among each other and the exchange of at least some of the Ethernet messages of the computing nodes (101 - 105) occurs in a time-controlled manner. According to the invention, a) the computer network comprises a second set of computing nodes (106 - 108), which are connected to each other by means of a bus (210), wherein the bus (210) is connected to the ...

MONITOR FOR A LOCAL BUS NETWORK IN STAR STRUCTURE.

COLLISION RECOGNITION CIRCUIT FOR DAISY CHAIN.

PROCEDURE AND SYSTEM FOR THE IDENTIFICATION OF WIRELESS UNITS

Method and apparatus for providing security in a star network connection using public key cryptography

DISTRIBUTED ANTENNA SYSTEM NETWORK ANALYTICS

The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor the DAS network performance and generate analytics of individual mobile devices.

OPTICAL NETWORK COLLISION MONITORING

Recall device

Interactive communication circuit

ACTIVE DISTRIBUTION BOARD IN A COMMUNICATION NETWORK

Communication system, terminating apparatus, and PON virtualization method for use therein

METHOD FOR AUTOMATICALLY REGISTERING SLAVE STATION IN PON SYSTEM AND MASTER AND SLAVE STATIONS

Distributed antenna system network analytics

The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor the DAS network performance and generate analytics of individual mobile devices.

Interactive communication circuit

RECALL DEVICE

A small wearable recall device is provided to capture images triggered by a combination of a detection of a capture condition (e.g., changes in motion, temperature or light level) followed by a relatively stable period, as detected by an accelerometer. By triggering on the combination of a detected capture condition followed by a detected stability condition, a clearer image of the environment of an interesting event is expected to be captured. The small size of the recall device makes it possible to integrate it into common portable consumer products, such as MP3 players, purses, clothing, hats, backpacks, necklaces, collars, and other human-wearable products.

METHOD AND MEANS FOR DEMAND ACCESSING AND BROADCAST TRANSMISSION AMONG PORTS IN A DISTRIBUTED STAR NETWORK

METHOD AND MEANS FOR DEMAND ACCESSING AND BROADCAST TRANSMISSION AMONG PORTS IN A DISTRIBUTED STAR NETWORK A demand access broadcast transmission method and means capable of supporting random port access and any-to-any transmission at very high data rates. A communication medium formed from an inverted tree network of nodes and full duplex connecting links permits the establishment of a path lock up-link through the network from a demanding port to a root node on a first-come first-serve demand access basis with arbitration at each distinct tree node level. Broadcast transmission is perfected down-link over all fan-out paths from the root node. Collision is avoided by locking a path to a port and by limiting race conditions among active ports to only the leading edges of messages. Thus, relinquishment of a broadcast channel overlapped with retransmission of a message does not result in path seizure since the occurrence of message leading edges is the singular path connection invoking event ...

THIN-WIRE MULTIPORT REPEATER

A multiport repeater (hub) for interconnecting a plurality of transceiver cables to a local area network transceiver port. The hub also has an external bus which can be employed for daisy chaining up to a total of eight hubs as a single connection to the transceiver port.

METHOD AND MEANS FOR DEMAND ACCESSING AND BROADCAST TRANSMISSION AMONG PORTS IN A DISTRIBUTED STAR NETWORK

MULTI-SERVICE NETWORK SYSTEM

A multi-service network system which forms a wide area network connecting a plurality of metropolitan areas, including a primary network ring including at least one primary node and at least one secondary node; and a secondary network ring connecting the at least one secondary node to business premises equipment, wherein the business premises equipment are associated with respective customer premises equipment.

IMPROVED STRUCTURE CABLING SYSTEM

This invention discloses a local area network including a hub (10), a plurality of nodes (12, 14, 16, 18, 20, 22), communication cabling (11) connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor (30) operative to provide at least some operating power to at least some of the pluarity of nodes via the communication cabling.

PON SYSTEM AND COMMUNICATION CONTROL METHOD

To ensure the origination of an emergency call from a terminal device when a communication failure due to the continuous emission of an ONU occurs in a PON system, a PON system (10) includes an OLT (100) and a plurality of ONUs (500 to 502) connected to the OLT (100) through an optical branching device (300), where data is transmitted to the OLT (100) by time-division multiplexing. The ONU (500) includes an emergency call detection unit (540) that detects an emergency call request from a telephone terminal (900), and an emergency call origination control unit (550) that outputs, to the optical branching device (300), a disconnection request for disconnecting ONUs (501, 502) from the OLT (100) when the emergency call request is detected and connection of the ONU (500) to the OLT (100) is not established. The optical branching device (300) includes an optical line control unit (330) that disconnects the ONUs (501, 502) from the OLT (100) in response to the disconnection request.

COMPUTER SYSTEM AND COMMUNICATION METHOD IN COMPUTER SYSTEM

A computer system according to the present invention is provided with: a controller for setting the flow entry for each of a plurality of switches before packets are transmitted from a plurality of nodes; and a switch for transmitting received packets, which include destination addresses specified by the flow entry, to destination devices specified by the flow entry, regardless of the transmission origin addresses of the received packets.

TOKEN STAR SWITCH

TOKEN STAR SWITCH The invention includes a switch having N ports (N > 1), each port beingconnected to a Token-Ring physical segment, an additional port connected to an on-board processor, and a high-throughput port connected to a network of higher bandwidth than the Token Ring. The invention allows to route frames received at any one port to any or several ports, to begin the routing of the frames before they have been completely received at the input port, and to directly forward frames from input to output of the high badwidth port.

RING COMMUNICATION SYSTEM AND METHOD

A method of connecting a new end station to a ring communication system for connecting a number of end stations. The method comprises: i) sensing an attempt by the new end station to attach to the ring; ii) determining whether there is a single end station only existing on the ring; and, iiia) if it is determined that there is more than one end station on the ring, allowing the new end station to attach to the ring and maintaining the ring communication configuration; or b) if it is determined that there is a single end station only on the ring, breaking the ring configuration and setting up two separate communication paths between the new end station and the existing end station.

POWER FEEDING SYSTEM FOR TELEPHONE TERMINAL IN LAN

Terminals are connected via cables in a star-shaped fashion with respect to a HUB in a LAN. Each of the cables includes therein signal lines and power feed lines. The HUB includes therein a power feed section. The power feed section and the power feed lines of each cable are connected to measure a value of current which flows in the power feed lines. If it is judged based on the measured current value that the terminal connected to the corresponding cable is a telephone terminal, the power feeding to the corresponding power feed lines is continued. On the other hand, if the terminal is judged to be a terminal other than the telephone terminal, the power feeding is stopped.

Network system.

Netzwerksystem mit einer Verteilereinheit (134), die mit einem Backbone (110) eines Datennetzwerks verbunden ist und mindestens ein Auskopplungselement (135) für ein Lichtwellenleiterkabel mit einer Mehrzahl von Lichtwellenleitern aufweist; einem Verteilerfeld (144), das mit mindestens einem Endgerät (154) zur elektronischen Datenverarbeitung verbindbar ist und ein Kupplungselement (145) aufweist; und einer mobilen Verbindungseinheit (160), die ein mit einem ersten und einem zweiten Anschlussglied (162, 164) versehenes erstes Lichtwellenleiterkabel mit einer Mehrzahl von Lichtwellenleitern zum Anschluss des Verteilerfelds (144) an den Backbone (110) aufweist, wobei das erste Anschlussglied (162) mit dem Auskopplungselement (135) und das zweite Anschlussglied (164) mit dem Kupplungselement (145) verbindbar ist.

Network system.

Die vorliegende Erfindung betrifft ein Netzwerksystem mit einer Verteilereinheit (134), einem Verteilerfeld (144) und einer mobilen Verbindungseinheit (160). Die Verteilereinheit (134) ist mit einem Backbone (110) eines Datennetzwerks verbunden und weist mindestens ein Auskopplungselement (135) für ein Lichtwellenleiterkabel mit einer Mehrzahl von Lichtwellenleitern auf. Das Verteilerfeld (144) ist mit mindestens einem Endgerät (154) zur elektronischen Datenverarbeitung verbindbar und weist ein Kupplungselement (145) auf. Die mobile Verbindungseinheit (160) weist ein mit einem ersten und einem zweiten Anschlussglied (162, 164) versehenes erstes Lichtwellenleiterkabel mit einer Mehrzahl von Lichtwellenleitern zum Anschluss des Verteilerfelds (144) an den Backbone (110) auf, wobei das erste Anschlussglied (162) mit dem Auskopplungselement (135) und das zweite Anschlussglied (164) mit dem Kupplungselement (145) verbunden ist.

ЛЕГКИЙ МНОГОФУНКЦИОНАЛЬНЫЙ САМОЛЕТ С УПРАВЛЯЮЩИМ ИНТЕГРИРОВАННЫМ КОМПЛЕКСОМ

Самолет содержит фюзеляж, крыло, оперение, шасси, силовую установку. Имеются пилотажно-навигационный комплекс, комплексные системы управления, электронной индикации и аварийного покидания самолета, системы объективного контроля, общесамолетного оборудования (ОСО), целеуказания, ввода информации и речевая информационно-управляющая система. Предусмотрены пульты управления, бортовой комплекс связи, бортовые панели техобслуживания и управляющий интегрированный комплекс. Последний включает бортовую цифровую вычислительную систему и систему информационного обмена из мультиплексных и радиальных каналов. БЦВС через системы и/или блоки сопряжения связана мультиплексными каналами с системами самолета, в том числе с системой ОСО. Система сопряжения с ОСО состоит из блоков преобразований и вычислений БПВ-1 и БПВ-2, связанных с блоком управления и контроля БУК, а также блоков сопряжения с ОСО. Блоки БПВ-1 н БПВ-2 подключены к мультиплексному каналу информационного обмена, а блок БУК связан радиальными ...

СПОСОБ УПРАВЛЕНИЯ ПЕТЛЯМИ НА ВТОРОМ УРОВНЕ МОДЕЛИ ВЗАИМОДЕЙСТВИЯ ОТКРЫТЫХ СИСТЕМ ДЛЯ СЕТЕЙ СВЯЗИ

В изобретении описан способ управления петлями на втором уровне модели взаимодействия открытых систем (ВОС) для сетей связи. Способ отличается тем, что для передачи трафика одному пользователю (с индивидуальной адресацией) при известном адресе назначения используют каналы связи, заблокированные обычным протоколом, исключающим образование петель. Предлагаемый в изобретении способ применим для оптимизации эффективности сети при передаче трафика, адресованного одному пользователю из числа адресатов, соединенных посредством передающей среды. Таким образом, способ также применим для выполнения задач любого стандартного протокола, исключающего образование петель, который применяют в системе с групповой и широковещательной адресацией трафика, т.е. трафика, способного вызвать распространение пакетов в режиме лавинной маршрутизации и другие проблемы, причиной которых является образование петель; при этом повышается эффективность связи между коммутаторами, у которых стандартным протоколом, препятствующим ...

БЕСПРОВОДНАЯ ПОЛЕВАЯ ШИНА УПРАВЛЕНИЯ

Изобретение относится к системе связи для обмена данными в аппаратуре техники автоматизации для связи между центральным и периферийными устройствами. В канал связи между центральным (10) и периферийными (31...3n) устройствами включен преобразователь (20), с которым однозначно сопряжено задаваемое количество периферийных устройств (31...3n) и который выполнен для проводной связи (40) с центральным устройством (10) и для беспроводной связи (50) с периферийными устройствами (31...3n).

METHOD OF CONTROL LOOPS ON THE SECOND LEVEL MODEL OPEN SYSTEM INTERACTION MODEL FOR COMMUNICATION NETWORKS

System and method for realizing common use of timer function

The invention can make implementation of Timer-CU in AAL2 either ensure precision and stability, or simplify the writing of code. It uses multi MPU arrays in network processor and combines dispatch module for controlling ATM flow, with predefined format information, to make interaction between independent MCU modules.

Meter calibration system and method based on ZigBee tree-shaped topological communication network

Multi-service transmission platform equipment managing system

Management of distributed switch in the forwarding table of the whole method and device

METHOD FOR SYNCHRONIZING DATA PROCESSING UNITS

Réseau de communication entre équipements utilisateurs

L'invention concerne un réseau de communication entre équipements utilisateurs pour le transfert des messages émis par chaque équipement utilisateur à tous les autres équipements utilisateurs. Le réseau selon l'invention a une structure arborescente 1-25 et fonctionne avec des autorisations d'émettre ou jetons. Application à la communication.

DEVICE AND CASE FOR CONNECTION HAVE A LAN

COMMUNICATION METHOD

SYSTEM FOR DETERMINING AGING INFORMATION OF A DATA FRAME FOR A NETWORK AVIONICS

Ce système de détermination d'une information de vieillissement local à une unité abonnée à un réseau de transmission d'informations avioniques, d'une trame de données, l'unité abonnée comportant au moins un système intermédiaire (1), un système d'extrémité (2) et des moyens formant microcontrôleur (3), est caractérisé en ce qu'il comporte des moyens de détermination de cette information de vieillissement comprenant des moyens de détermination des temps de traversée par la trame du système intermédiaire (1) et du système d'extrémité (2) et des moyens d'addition de ces temps.

Wiring technique for establishing local area network for data transfer

Réseau local incorporant le câblage d'au moins un réseau câblé préexistant. Le réseau local incorpore des branches d'un réseau câblé (18) pouvant être reliées à des composants électriques (10, 11, 12) spécifiques susceptibles de perturber les transmissions d'informations mais, selon l'invention, au moins certaines de ces branches sont interconnectées par des filtres passe-haut (16, 17) constituant des shunts haute fréquence.

REPEATER INTENDS TO CONNECT UNIT NR DRUNK OF THE TYPE HAS PINCHING

La présente invention concerne un répéteur destiné à relier ensemble n bus du type à pincement de manière qu'une information émise sur l'un desdits bus puisse être transmise à l'ensemble desdits bus. Il est constitué, d'une part, de n modules (Mi , i=1 à n) affectés chacun à un bus (Bi ), chaque module (Mi ) comportant un interrupteur (Ii ) dont les deux contacts (i1 et i2 ) sont respectivement reliés aux deux fils du bus (Bi ) correspondant, une entrée de commande (Eci ) reliée à l'électrode de commande (ec) dudit interrupteur commandé (Ii ), une porte du type NON-OU, et, d'autre part, de n portes de type OU, chaque porte comprenant une sortie reliée à l'entrée de commande (Eci ) d'un module (Mi ) et n-1 entrées respectivement reliées aux sorties des n-1 autres modules (Mi ).

Branch-line system of communication to token with management of priority.

Branch-line system of communication to token with management of priority.

Branch-line system of communication to token with management of priority.

Branch-line system of communication to token with management of priority.

Branch-line system of communication to token with management of priority.

RECALL DEVICE

Data communication system and method

Multiple address security architecture

트리형 네트워크 기반 타임슬롯 및 주파수 슬롯 할당 방법

... 타임슬롯 할당방법이 제공되며, 트리형 센서 네트워크에 포함된 적어도 하나의 노드 중 소스 노드(Source Node)로부터 목적 노드(Destination Node)까지의 패킷(Packet)을 전송하기 위한 노드 경로(Node Path)를 결정하여 라우팅 테이블(Routing Table)을 생성하는 단계, 생성된 라우팅 테이블에 기반하고, TSAA(Time Slot Allocation Algorithm)를 이용하여 노드 경로의 타임 슬롯(Slot)을 할당하는 단계, 및 FSAA(Frequency Slot Allocation Algorithm)을 이용하여 적어도 하나의 노드 중 하나의 노드와 이웃한 노드(One Hop Neighbor) 간의 동일한 타임 슬롯인 경우, 하나의 노드와 이웃한 노드는 서로 다른 주파수를 가지도록, 노드 경로별로 서로 다른 주파수를 가지도록 설정하는 단계를 포함한다.

키체인 동기화

... 일부 실시예들이, 디바이스의 적어도 하나의 처리 유닛에 의해 실행될 때 디바이스 상에 저장된 키체인들의 세트를 다른 디바이스들의 세트와 동기화하는 프로그램을 저장하는 비일시적 기계-판독가능 매체를 제공한다. 디바이스와 다른 디바이스들의 세트는 피어 투 피어(P2P) 네트워크를 통해 서로 통신 가능하게 연결된다. 프로그램은 디바이스 상에 저장된 키체인들의 세트 내의 키체인에 대한 수정을 수신한다. 프로그램은 디바이스 상에 저장된 키체인들의 세트를 다른 디바이스들의 세트와 동기화하기 위하여 다른 디바이스들의 세트 내의 각각의 디바이스에 대한 업데이트 요청을 생성한다. 프로그램은 별개의 보안 통신 채널들의 세트를 통하여 업데이트 요청들의 세트를 P2P 네트워크를 통해 다른 디바이스들의 세트로 전송한다.

A system and method for efficiently monitoring information in a network having a plurality of repeaters

A method for efficiently transferring a data packet on a network includes the following steps: (a) to receive data packet from the relay station in a net, the data packet will includes a destination address, (b) to determine whether the destination address matches the stored management address; and (c) when the stored management address does not match the destination address, the data packet is therefore compressed.

Bus management method

The invention relates to a bus management method, whose objective is to simplify the bus management among the plural nodes linking with bus in the synchronous communication system. The composition is to install the operating channel register REG1 in the bus management node and bus capacity register REG2. Prior to the start of synchronous communication of each node, the read command is sent with respect to the operating channel register REG1 and bus capacity register REG2. From the read content, the remaining capacity of unused channel number and bus are identified. Then, when there are unused channel and remaining capacity, the operating channel number and operating bus capacity are stored in the operating channel register REG1 and bus capacity register REG2 to send the write command to these registers.

SYNCHRONOUS MEASUREMENT SYSTEM

A synchronous measurement system includes a main controller, a plurality of sub-controllers connected to the main controller, and a plurality of sensor units connected to the sub-controller. The sub-controllers include a sub-controller master and a sub-controller slave connected to the sub-controller master. The main controller transmits a start command to the sub-controller master. The sub-controller master generates a trigger signal according to reception of the start command and transmits the trigger signal to the sub-controller slave. Each of the plurality of sub-controllers transmits a synchronization command to the plurality of sensor units on the basis of the trigger signal.

NETWORK SYSTEM AND TOPOLOGY MAP GENERATING METHOD

An object was to obtain a network system capable of automatically generating a topology map. A PON topology generating section (402) in a network system provided with a prescribed network comprising an OLT (101) and a plurality of ONUs (201 to 203) executes topology map generating processing. This topology map generating processing comprises: (a) a step of calculating the number (Nci) of a plurality of 2-way branches constituting the number of 2-way branches of splitters on transmission paths of OLTs and a plurality of respective ONUs, based on a plurality of transmission distances (Li), a plurality of downloading transmission power values (PT) and a plurality of downloading received power values (PRi); and (b) a step of generating a topology map based on the number (Nci) of the plurality of 2-way branches and the plurality of transmission distances (Li).

NETWORK CONTROL ARCHITECTURE AND PROTOCOL FOR A DISTRIBUTED CONTROL, DATA ACQUISITION AND DATA DISTRIBUTION SYSTEM AND PROCESS

A system and process for distributed control, data acquisition and data distribution. The system and process comprise a one or more chain of nodes configured to remove and add packets to a synchronous data stream without management or control of a master node. Additionally, the nodes are provided with offset parameters to affect synchronous activity.

DISTRIBUTED CAM INTEGRITY SYSTEM

A switch module for a computer network has a memory device for storing the relationship between the ports of the switch and the MAC address of the devices connected thereto. One port is designated a communications port and any packet destined for a device not listed in the memory device of the switch is sent to the communications port. A number of switch modules can be connected together with data flowing between modules via their communications ports. One of the modules will be provided with an output port for connection to the rest of the network.

METHOD OF RELEASING TRANSMITTED DATA BY MEANS OF RECEPTION OR TRANSMISSION RECOGNITION

The invention relates to a method of releasing transmitted data by means of reception or transmission recognition, consisting in storing the data transmitted to different users. According to the invention, each communication is configured with transmission recognition, whereby a signal is generated for the release of the transmitted data upon termination of the transmission, or reception recognition, whereby recognition confirmation is awaited from the receiver before the release of the data. The invention is characterised by the distinction between the transmission time and the reception time. The invention is further characterised in that the decisions to retransmit data or to release data, for lack of recognition at reception, are taken knowing that the user has had the opportunity to transmit a recognition during the time assigned to the receiver.

SYNCHRONOUS DATA TRANSFER SYSTEM FOR TIME-SENSITIVE DATA IN PACKET-SWITCHED NETWORKS

A transmission arrangement and method permits time-sensitive data to be transmitted through a packet-switched network and arrive synchronously at separate end points without synchronising all payload carrying nodes in the network. This is achieved by propagating a timing reference through the network from the sending node to the end nodes, each end node adjusting that phase of its local frequency generator to this timing reference. The sending node then sends data structure information to the end nodes, enabling the end nodes to regenerate the timing and structure of the synchronous data stream. Finally delay information is sent to each end node that allows the end nodes to adjust the start of synchronous data transmission by an amount such that all will commence transmission substantially simultaneously. With this information the end nodes independently recreate a signal in synchronisation. This solution has the advantage that the network infrastructure can remain substantially unchanged ...

COMMUNICATION ARRANGEMENT FOR TRANSMITTING INFORMATION MESSAGES BETWEEN A PLURALITY OF DECENTRALISED COMMUNICATION UNITS AND AT LEAST ONE CENTRAL COMMUNICATION UNIT

In order to transmit information messages towards a central communication unit, decentralised communication units (DBG1 n) are respectively connected to a central memory unit (SP) connected to at least one central communication unit (ZBG), by means of a point-to-point connection (VL). Control means (CONT) associated with the memory unit (SP) are used to identify initial information messages of the information messages which are respectively (inf1 n) transmitted via the respective point-to-point connections (VL), and to respectively store the successive information messages in a memory region (MEM) of the memory unit (SP). Once the end information messages of the successive information messages (inf1 6) have been identified, the respectively stored information messages (inf1 6) are read out and transmitted onwards from the central memory unit (SP) to the central communication unit (ZBG). Advantageously, the transmission resources located between the central communication unit (ZBG) and the ...

METHOD FOR EXCHANGING DATA BETWEEN A PLURALITY OF SUBSCRIBERS BY MEANS OF A DATA BUS

The invention relates to a method for exchanging data between a plurality of subscribers (K1, K2, K3, K) by means of a data bus. The subscribers are located in their totality in at least two spatially and physically separate subordinate data buses and exchange, in the interval in which the more rapid data bus is not busy, data via control devices that are associated with every subordinate data bus and that are interconnected via a more rapid data bus.

ANTI-FRAUD CONTROL SYSTEM, MONITORING DEVICE, AND ANTI-FRAUD CONTROL METHOD

In an anti-fraud control system, a first error monitoring device includes a first frame transmitting and receiving unit that receives a frame flowing on the on-board network; and a first error detector that causes transmission of an error notification frame for notifying of an occurrence of an error in the frame when detecting the occurrence of the error in the frame received by the first frame transmitting and receiving unit. Each of second error monitoring devices includes: a second frame transmitting and receiving unit that receives the error notification frame; and a second error detector that regards, as a frame to be invalidated, the frame subjected to the error and included in the received error notification frame, and shifts the second error monitoring device to an invalidation mode for invalidating reception of subsequent frames, if no error is detected in an own branch with respect to the frame.

Spanning tree protocol for hybrid networks

A hybrid STP can be implemented in a hybrid communication network to prevent communication loops without disabling network interfaces of hybrid devices and redundant paths of the hybrid communication network, while preserving the advantages of the hybrid communication network. Each network interface of a hybrid device can be designated as a relay interface or a non-relay interface. Each of the relay interfaces is independent of the other network interfaces of the hybrid device. The non-relay interfaces operate as a single virtual interface and do not forward packets between each other. Each network interface of the hybrid device may also be associated with a forwarding bit that indicates whether broadcast packets should be forwarded via the network interface. The hybrid device can determine whether/how to forward a packet depending on whether an ingress interface is a relay or non-relay interface and a forwarding bit value of the ingress interface.

Synchronized multipoint-to-point communication using orthogonal frequency division

A multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system is provided. The system includes a plurality of remote units and a host unit that includes a demodulator. Each of the remote units transmits an upstream OFDM signal using a multiple access scheme to the host unit demodulator using at least one of a plurality of orthogonal tones within an OFDM waveform. The host unit receives the upstream OFDM signals from a plurality of the remote units. Portions of upstream OFDM signals from at least two of the remote units arrive at the host unit at the same time. The host unit demodulator demodulates the portions and the upstream signals from the plurality of remote units arrive at the host unit synchronized in time and frequency within the OFDM waveform.

SECURE TOKENS FOR CONTROLLING ACCESS TO A RESOURCE IN A RESOURCE DISTRIBUTION NETWORK

A system for generating and applying a secure token in a resource distribution network is provided. For example, a headend system generates a global token based on a time duration specified for multiple meters that are in communication with the headend system through at least a mesh network in a normal condition. The global token is associated with the time duration and is applicable to the multiple meters. The headend system causes the global token to be broadcast via a broadcast network. After receiving the global token, the meter verifies the global token and determines the time duration associated with the global token. The meter further connects premises associated with the meter to a resource distribution network for at least the time duration associated with the global token.

Optical receiver having collision detection function

A signal collision detection device for an optical receiver forming a part of an optical local area network which interconnects a number of optical transceivers using optical fibers. The signal collision detection device operates to inform the receiver whether it is receiving a signal from only one transmitter or simultaneously receiving signals from two or more network transmitters. The signal collision detection device includes at least a differentiating circuit, a decision circuit, and a collision detection circuit. The differentiating circuit, which has a time constant sufficiently small to discriminate the leading and trailing edges of incoming pulse signals, converts the incoming signal into a bipolar balanced code of pulses of one polarity corresponding to a rising edge and of the other polarity corresponding to a falling edge. The decision circuit detects the polarity of the pulses produced by the differentiator circuit and supplies this information to the collision detection circuit ...

Authorizing Equipment on a Sub-Network

Systems and methods for authorizing a customer premise equipment (CPE) device to join a network through a network termination unit (NTU). The CPE device can send an encrypted connection request, and an authorization server can decrypt the connection request and provide a network membership key (NMK) associated with the CPE device to the NTU. The authorization server can encrypt the NMK associated with the CPE device using a device access key (DAK) associated with the NTU.

Transmitting and receiving a file in a network environment

A method of receiving a file including receiving a file and receiving at least one tag path associated with the file. The tag path has a lowest node and a highest node and each the node having a tag vector. The method also includes selecting at least one storage path for which a similarity between the tag vector of the lowest node and the tag vector of the highest node exceeds a predetermined threshold and storing the file under the storage path.

Method for multi-channel resource reservation in a wireless mesh network

In a mesh network a multiband OFDM Alliance (MBOA) system provides higher channel access efficiency through a Distributed Reservation Protocol (DRP). A MBOA Physical layer (PHY) and a MBOA Medium Access Control (MAC) are used to increase the efficiency of the mesh network.

Virtual Switch Interconnect for Hybrid Enterprise Servers

Virtual switch interconnect for hybrid enterprise servers including a system for network configuration. The system includes a first processor coupled to a second processor via a network. The network includes a plurality of switches and links between the switches to offload processing from the first processor to the second processor. The switches include at least one virtual switch. The first processor is configured to perform a method that includes receiving network configuration data and switch state information for the network. It is detected that a first link and a second link provide two different paths between two of the switches. The first link is selected, at the computer, as a primary link based on contents of the network configuration data. The second link is deactivated in response to the selecting. 1. A system for network configuration , the system comprising:a first processor coupled to a second processor via a network, the network comprising a plurality of switches and links between the switches to offload processing from the first processor to the second processor, the first processor configured to perform a method comprising:receiving network configuration data and switch state information for the network,detecting that a first link and a second link provide two different paths between two of the switches;selecting the first link as a primary link, the selecting responsive to the network configuration data; anddeactivating the second link in response to the selecting.2. The system of claim 2 , wherein the switch state information indicates that a primary link has been repaired and re-activated claim 2 , and responsive to the indication claim 2 , the method further comprise:locating a back-up link corresponding to the primary link, the locating in response to at least one of the network configuration data and the switch state information; anddeactivating the back-up link in response to the selecting.3. The system of claim 2 , wherein the switch state ...

METHOD AND SYSTEM FOR COLLECTING DATA ON A WIRELESS DEVICE

Methods, systems, and tangible computer readable storage media for collecting data on a wireless device are disclosed. An example method includes generating a first hierarchical tree structure for a first wireless device metering event associated with a plurality of data attributes describing an occurrence of the first wireless device metering event associated with an application. The example method includes generating a second hierarchical tree structure for a second wireless device metering event associated with a plurality of data attributes describing an occurrence of the second wireless device metering event associated with the application. The example method includes linking a first lower level node of the first hierarchical tree structure to a second lower level node of the second hierarchical tree structure when a first data attribute associated with the first lower level node and a second data attribute associated with the second lower level node share a feature. 1. A method comprising: identifying the first event as a highest node of the first hierarchical tree structure; and', 'forming lower level nodes of the first hierarchical tree structure based on the plurality of data attributes;, 'generating a first hierarchical tree structure for a first wireless device metering event associated with a plurality of data attributes describing an occurrence of the first wireless device metering event associated with an application by identifying the second event as a highest node of the second hierarchical tree structure; and', 'forming lower level nodes of the second hierarchical tree structure based on the plurality of data attributes;, 'generating a second hierarchical tree structure for a second wireless device metering event associated with a plurality of data attributes describing an occurrence of the second wireless device metering event associated with the application bylinking a first lower level node of the first hierarchical tree structure to a second ...

Method and apparatus for managing energy through virtualization by grouping terminal controllers

A terminal control apparatus and a central control apparatus may control at least one terminal device that consumes energy in an energy management system while obtaining the same effect as when virtual equipment is used. A first terminal control apparatus may receive a control command related to a first terminal device from a central control apparatus or a second terminal control apparatus included in the energy management system. The first terminal control apparatus may determine whether the first terminal device matches the first terminal control apparatus, and selectively transmit the control command to a third terminal control apparatus or selectively control the first terminal device according to the control command, based on the determination.

COMMUNICATION METHOD AND APPARATUS FOR THE EFFICIENT AND RELIABLE TRANSMISSION OF TT ETHERNET MESSAGES

The goal of the present invention is to improve the useful data efficiency and reliability in the use of commercially available ETHERNET controllers, in a distributed real time computer system, by a number of node computers communicating via one or more communication channels by means of TT ETHERNET messages. To achieve this goal, a distinction is made between the node computer send time (KNSZPKT) and the network send time (NWSZPKT) of a message. The KNSZPKT must wait for the NWSZPKT, so that under all circumstances, the start of the message has arrived in the TT star coupler at the NWSZPKT, interpreted by the clock in the TT star coupler. The TT star coupler is modified, so that a message arriving from a node computer is delayed in an intelligent port of the TT star coupler until the NWSZPKT can send it precisely at the NWSZPKT into the TT network. 120.-. (canceled)21. A communication method for the transmission of TT ethernet messages in a distributed real time computer system , comprising a plurality of node computers , wherein each node computer has at least one ethernet controller , which ethernet controller is connected via a data line directly to a port of a TT star coupler clearly assigned to the node computer , and wherein a plurality of TT star couplers can be directly or indirectly connected to one another via one or more data lines in order to form a closed TT network ,characterized in that a network send time is a priori allocated to each TT ethernet message by a scheduler, and wherein the port of the TT star coupler delays a TT ethernet message arriving from the node computer until the next network send time for this type of TT ethernet message is reached on its clock, and wherein the port sends this TT ethernet message into the TT network exactly at this network send time or within an exactly upwardly limited time interval beginning at this network send time.22. The communication method in accordance with claim 21 , characterized in that a periodic ...

Managing network identities

Techniques for managing network identities include generating, with a local computing system, a tree structure representing a network comprising a plurality of entities, the tree structure comprising a plurality of nodes, each node of the plurality of nodes representing an entity of the plurality of entities, at least one entity of the plurality of entities is represented by more than one node of the plurality of nodes; assigning a unique identifier to each node; identifying each node of the plurality of nodes as being a protected node or an unprotected node; and transmitting, to a remote computing system, the tree structure, the unique identifiers for the protected nodes, and identity information of the entities for the unprotected nodes.

SPANNING TREE PROTOCOL FOR HYBRID NETWORKS

A hybrid STP can be implemented in a hybrid communication network to prevent communication loops without disabling network interfaces of hybrid devices and redundant paths of the hybrid communication network, while preserving the advantages of the hybrid communication network. Each network interface of a hybrid device can be designated as a relay interface or a non-relay interface. Each of the relay interfaces is independent of the other network interfaces of the hybrid device. The non-relay interfaces operate as a single virtual interface and do not forward packets between each other. Each network interface of the hybrid device may also be associated with a forwarding bit that indicates whether broadcast packets should be forwarded via the network interface. The hybrid device can determine whether/how to forward a packet depending on whether an ingress interface is a relay or non-relay interface and a forwarding bit value of the ingress interface. 1. A method comprising:executing one or more spanning tree operations at a first of a plurality of network devices of a hybrid communication network;determining, at the first of the plurality of network devices, one or more of a root interface, at least one alternate root interface, and at least one designated interface of the first of the plurality of network devices in response to said executing the one or more spanning tree operations;identifying, at the first of the plurality of network devices, the root interface and the at least one alternate root interface as non-relay interfaces and identifying the at least one designated interface as a relay interface; andin response to receiving a packet at a first interface of the first of the plurality of network devices, forwarding the packet via one or more other interfaces of the first of the plurality of network devices based, at least in part, on whether the first interface is a relay interface or a non-relay interface.2. The method of claim 1 ,wherein the non-relay ...

Aggregating Data Traffic From Access Domains

According to one embodiment, a first message identifying a best root node of a spanning tree may be generated. The spanning tree may be implemented by an access domain. The message may be generated independently of a spanning tree protocol instance. The first aggregation node may transmit the first message to a plurality of access nodes of the access domain. Data traffic from the plurality of access nodes may be received. Each access node of the plurality of access nodes may implement a spanning tree protocol instance that selects the best root node as a root node of the spanning tree. The data traffic may be aggregated with other data traffic of a plurality of access domains, and the aggregated data traffic transmitted to an aggregation network. 1. A method comprising:generating, by a first aggregation node that does not implement one or more instances of a spanning tree protocol instance, a first protocol message identifying a best root node of a spanning tree implemented by an access domain;transmitting, by the first aggregation node, the first protocol message to a plurality of access nodes of the access domain;receiving data traffic from the plurality of access nodes, each access node of the plurality of access nodes implementing a spanning tree protocol instance that selects the best root node as a root node of the spanning tree; andaggregating the data traffic and other data traffic of a plurality of access domains and transmitting the aggregated data traffic to an aggregation network.2. The method of claim 1 , the spanning tree further comprising:a second aggregation node configured to transmit a second protocol message identifying the second aggregation node as a second best root node of the spanning tree.3. The method of claim 1 , further comprising:receiving, at the first aggregation node, a spanning tree protocol message from an access node, the spanning tree protocol message identifying a topology change of the access domain; andcommunicating the ...

ANOMALY HANDLING METHOD AND ANOMALY HANDLING DEVICE

An anomaly handling method in an in-vehicle network includes: transmitting and receiving frames; detecting a frame having an anomaly; and switching, when the anomaly is detected in the detecting, a transmission timing of the frame in which the anomaly is detected. The switching includes changing a switched transmission timing to which the transmission timing is switched, according to predetermined information. 1. An anomaly handling method in an in-vehicle network , the anomaly handling method comprising:transmitting and receiving frames;detecting a frame having an anomaly; andswitching, when the anomaly is detected in the detecting, a transmission timing of the frame in which the anomaly is detected,wherein the switching includes changing a switched transmission timing to which the transmission timing is switched, according to predetermined information.2. The anomaly handling method according to claim 1 ,wherein the predetermined information includes a number of times the anomaly is detected in the detecting, andthe switching includes determining, as the switched transmission timing, a transmission timing according to the number of times the anomaly is detected.3. The anomaly handling method according to claim 2 ,wherein the switching includes calculating a hash value of the number of times the anomaly is detected, calculating a remainder of the hash value using a number of bits of a payload segment of the frame in which the anomaly is detected, and determining, as the switched transmission timing, a transmission timing according to the remainder.4. The anomaly handling method according to claim 1 ,wherein the predetermined information includes information indicating a transmission time of the frame in which the anomaly is detected, andthe switching includes determining, as the switched transmission timing, a transmission timing according to the information indicating the transmission time.5. The anomaly handling method according to claim 4 ,wherein the switching ...

CONNECTION METHOD AND COMMUNICATION DEVICE

A first communication device compares communication quality between a target communication device selected from among communication devices having a possibility of becoming a connection destination and the first communication device, with a quality threshold. The first communication device obtains the quality threshold as a function of data reception quality in the target communication device and a number of communication devices to which connections were attempted by the first communication device excluding the target communication device. The first communication device sets the quality threshold as a detection threshold for detecting an opportunity to change a connection destination when the communication quality is equal to or higher than the quality threshold. The first communication device determines a second communication device with relatively high communication quality with the first communication device to be a connection destination used until the communication quality between the second and first communication devices falls below the detection threshold. 1. A connection method wherein comparing communication quality between a target communication device selected from among communication devices having a possibility of becoming a connection destination for the first communication device and the first communication device, with a quality threshold obtained as a function of data reception quality in the target communication device and a number of communication devices to which connections were attempted by the first communication device excluding the target communication device;', 'setting the quality threshold as a detection threshold for detecting an opportunity to change a connection destination when the communication quality is equal to or higher than the quality threshold; and', 'determining a second communication device with relatively high communication quality with the first communication device to be a connection destination used until the ...

METHOD AND NETWORK INFRASTRUCTURE FOR THE REDUNDANT TRANSMISSION OF MESSAGES IN A DISTRIBUTED REAL-TIME SYSTEM

The invention relates to a method for the redundant transmission of messages in a distributed real-time system, wherein the real-time system comprises two or more computing nodes (-) and one or more star couplers (-), wherein the computing nodes (-) are connected to the star couplers (-) by means of bidirectional communication lines () and the star couplers (-) are interconnected by bidirectional communication lines (), and wherein the star couplers (-) connected by the communication lines () form a network infrastructure (), wherein one or more star couplers (-) of the network infrastructure () perform one or more activity rasters (), wherein an activity raster () consists of alternating active phases () and rest phases (), and wherein any message sent in the network infrastructure is assigned to precisely one activity raster (). The invention also relates to a network infrastructure and also a real-time system comprising a network infrastructure of this type. 1. A method for the redundant transmission of messages in a distributed real-time system , wherein the real-time system comprises two or more computing nodes and one or more star couplers , wherein the computing nodes are connected to the star couplers by means of bidirectional communication lines , and the star couplers are interconnected by the bidirectional communication lines , and wherein the star couplers connected by the bidirectional communication lines form a network infrastructure , and wherein at least some of the messages are sent redundantly , and wherein messages belonging to a message stream have the same identity , the method comprising:performing one or more activity rasters by one or more star couplers of the network infrastructure, wherein an activity raster in each case consists of alternating active phases and rest phases, wherein all active phases of an activity raster have the same active phase duration, and wherein all rest phases of an activity raster have the same rest phase duration ...

ETHERNET VIRTUALISATION INTERCONNECTION NETWORKS HAVING A HUB-SPOKE STRUCTURE

The present disclosure describes an example of device for use in an Ethernet Virtualisation Interconnection (EVI) network having a Hub-Spoke structure. The EVI network comprises a first Hub Edge Device (Hub-ED) and a second Hub-ED, the device comprising a memory unit to store instructions; and a processor to perform the instructions from the memory unit. The processor receives a message having an identifier, the identifier identifying a destination address of the message. The processor selects an EVI link interface from a set of EVI link interfaces having a first EVI link interface and a second EVI link interface each associated with the identifier, wherein the first EVI link interface interfaces with the first Hub-ED and the second EVI link interface interfaces with the second Hub-ED. The processor also sends the message to one of the first Hub-ED or the second Hub-ED via the EVI link interface selected from the set of EVI link interfaces. 1. A device for use in an Ethernet Virtualisation Interconnection (EVI) network having a Hub-Spoke structure , the EVI network comprises a first Hub Edge Device (Hub-ED) and a second Hub-ED , the device comprising:a memory unit to store instructions; and to receive a message having an identifier, the identifier identifying a destination address of the message,', 'to select an EVI link interface from a set of EVI link interfaces having a first EVI link interface and a second EVI link interface each associated with the identifier, wherein the first EVI link interface interfaces with the first Hub-ED and the second EVI link interface interfaces with the second Hub-ED, and', 'to send the message to one of the first Hub-ED or the second Hub-ED via the EVI link interface selected from the set of EVI link interfaces., 'a processor to perform the instructions from the memory unit'}2. The device according to claim 1 , wherein the processor further performs the instructions from the memory unit to select the EVI link interface based on a ...

TECHNOLOGIES FOR DENSELY PACKAGING NETWORK COMPONENTS FOR LARGE SCALE INDIRECT TOPOLOGIES

Technologies for densely packaging network components for large scale indirect topologies include group of switches. The group of switches includes a stack of node switches that includes a first set of ports and a stack of global switches that includes a second set of ports. The stack of node switches are oriented orthogonally to the stack of global switches. Additionally, the first set of ports are oriented towards the second set of ports and the node switches are connected to the global switches through the first and second sets of ports. Other embodiments are also described and claimed. 1. A group of switches comprising:a stack of node switches that includes a first set of ports; anda stack of global switches that includes a second set of ports;wherein the stack of node switches is oriented orthogonally to the stack of global switches, the first set of ports are oriented towards the second set of ports, and the node switches are connected to the global switches through the first and second sets of ports.2. The group of claim 1 , wherein the number of node switches in the group is different than the number of global switches.3. The group of claim 1 , wherein each node switch is connected to each global switch in the group through the first set of ports.4. The group of claim 1 , wherein the group is positioned in a portion of a cabinet.5. The group of claim 4 , wherein the node switches are connected to a plurality of nodes that are positioned in a second portion of the cabinet.6. The group of claim 4 , wherein the cabinet is a first cabinet and the node switches are connected to a plurality of nodes that are positioned in a second cabinet that is adjacent to the first cabinet.7. The group of claim 6 , wherein the second cabinet is positioned on one side of the first cabinet and the node switches are additionally connected to a plurality of nodes that are positioned in a third cabinet that is adjacent to the first cabinet on an opposite side of the first cabinet.8. ...

CONTAINER TELEMETRY IN DATA CENTER ENVIRONMENTS WITH BLADE SERVERS AND SWITCHES

The present disclosure provides systems, methods, and non-transitory computer-readable storage media for determining container to leaf switch connectivity information in a data center in a presence of blade switches and servers. In one aspect of the present disclosure, a method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server, includes receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center; determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; and generating a visual representation of a topology of the data center based on the container to leaf switch connectivity information. 1. A method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server , the method comprising:receiving, at a network controller, link connectivity information;correlating, at the network controller, the link connectivity information with other information;determining, at the network controller, container to leaf switch connectivity information based on the correlating of the link connectivity information with other information; andgenerating a visual representation based on the container to leaf switch connectivity information.2. The method of claim 1 , further comprising:sending a query to a network component for the link connectivity information, the network component determining the link connectivity information.3. The method of claim 2 , wherein the link connectivity information further includes north-bound neighboring information between the at least one blade switch and at least one leaf switch of the data center.4. The method of ...

METHOD AND DEVICE FOR INTER-PROCESS COMMUNICATION IN NETWORK

A system for inter-process communication (IPC) in a network of a vehicle through a port for communication between a source application and a destination application. 1. An electronic device of a vehicle , the electronic device comprising:a memory storing one or more instructions; and check validity of a registration request of a source application of the vehicle for communicating with a destination application of the vehicle,', 'determine a port for the source application of the vehicle to communicate with the destination application of the vehicle, based on the validity of the registration request,', 'transmit a communication request from the source application of the vehicle to the destination application of the vehicle through the port, and', 'control communication between the source application of the vehicle and the destination application of the vehicle based on the communication request., 'at least one processor configured to execute the one or more instructions to2. The electronic device of claim 1 , wherein the registration request comprises at least one of a name of the destination application of the vehicle or a desired quality of service (QoS).3. The electronic device of claim 1 , wherein the at least one processor is further configured to execute the one or more instructions to register the source application of the vehicle in a network through a first library of the source application of the vehicle based on the registration request.4. The electronic device of claim 1 , wherein the at least one processor is further configured to execute the one or more instructions to recursively forward the communication request to one or more communication stacks until the communication request reaches a physical layer.5. The electronic device of claim 1 , wherein the at least one processor is further configured to execute the one or more instructions to recursively transmit the communication request to one or more Ethernet switches until the communication request ...

Roaming in a wireless mesh network

Introduced here are techniques to provide automated mesh point survey and guided installation for assisting the installation and configuration of a wireless mesh network. Additional implementation techniques are also introduced including, for example, link rate estimation, roaming, and dedicated backhaul link implementation in such wireless mesh network, are also discussed. Among other benefits, this disclosure provides an integral solution where multiple wireless local area network (WLAN) mesh point devices are deployed in a relatively large environment with potential dead spots, such as a home or an office.

Collective communication system and methods

A method in which a plurality of process are configured to hold a block of data destined for other processes, with data repacking circuitry including receiving circuitry configured to receive at least one block of data from a source process of the plurality of processes, the repacking circuitry configured to repack received data in accordance with at least one destination process of the plurality of processes, and sending circuitry configured to send the repacked data to the at least one destination process of the plurality of processes, receiving a set of data for all-to-all data exchange, the set of data being configured as a matrix, the matrix being distributed among the plurality of processes, and transposing the data by each of the plurality of processes sending matrix data from the process to the repacking circuitry, and the repacking circuitry receiving, repacking, and sending the resulting matrix data to destination processes. 1. A method comprising:providing a plurality of processes, each of said plurality of process being configured to hold a block of data destined for others of said plurality of processes; receiving circuitry configured to receive at least one block of data from at least one source process of the plurality of processes;', 'repacking circuitry configured to repack received data in accordance with at least one destination process of the plurality of processes; and', 'sending circuitry configured to send the repacked data to said at least one destination process of the plurality of processes;, 'providing at least one instance of data repacking circuitry comprisingreceiving a set of data for all-to-all data exchange, the set of data being configured as a matrix, the matrix being distributed among the plurality of processes; andtransposing the data by: each of the plurality of processes sending matrix data from said process to said data repacking circuitry; and said data repacking circuitry receiving, repacking, and sending the resulting ...

Distributed antenna system network analytics

The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor the DAS network performance and generate analytics of individual mobile devices.

Method for a switch-initiated sdn controller discovery and establishment of an in-band control network

Controller(s) in a software defined network (SDN) are able to determine a control path towards each network switch by performing a switch-originated discovery and using an in-band control network that is an overlay on the data network. A topology tree is maintained, where each controller being the root of the tree, and where messages from the root to any switch may pass through neighboring switches to reach that switch (and vice-versa). Each switch in the SDN attempts to connect to the controller when it does not have a readily configured control connection towards the controller. Once the controller learns about the presence of a new switch and at least one or more paths to reach that switch through a novel discovery process, it can select, adjust and even optimize the control path's route towards that switch.

Network Protocol Method for Mesh Capability in Narrow-Band Wireless Networks

A narrow-band wireless data network includes a central provisioning server that is configured for providing command and control data to the network, to retain the mesh-tree structure of the network, and to manage and retain all sensor data and new connection requests. A gateway device is connected to the central provisioning server for communicating with the network through a first and a second radio receiver/transmitter that is configured to send and receive data on at least one frequency channel. Multiple device nodes that control and communicate with associated sensor devices for collecting sensor data. The device nodes interpret and execute commands transmitted from the gateway device or other device nodes on the network addressed to individual device nodes. The commands are executed with no acknowledgment. 1. A method for forming a narrow-band wireless data network comprising the steps of: providing command and control data to the network,', 'retaining a mesh-tree structure of the narrow-band wireless data network,', 'managing and retaining all sensor data, and', 'managing and responding to new connection requests; and, 'providing a central provisioning server that executes the steps of providing a first radio receiver/transmitter is configured for sending commands and control messages on at least one command and control frequency channel;', 'providing a second radio receiver/transmitter configured for simultaneously receiving data on one or more response frequency channels; and', 'connecting the gateway device to the central provisioning server comprising:', configuring the gateway processor for generating command and control messages, and', 'configuring the gateway processor for decoding response and data messages received from the narrow-band wireless data network;, 'providing a gateway processor by the steps of'}], 'providing a gateway device by the steps of'} controlling and communicating with an associated sensor device for retrieving and retaining from ...

HOME SIDE DEVICE AND METHOD OF CLEARING MANAGEMENT TABLE

A home side device according to one aspect of the present invention includes: a UNI port for a communication line used by one or a plurality of communication devices in a user's home; an access processing unit that performs upstream access control and holds a management table of address information of the communication devices; a detecting unit that detects link states of the communication devices; and a control unit that performs a process of clearing the management table when a link-down of all of the communication devices has been detected. 1. A home side device comprising:a UNI port for a communication line used by one or a plurality of communication devices in a user's home;an access processing unit that performs upstream access control;a holding unit that holds a management table of address information of the communication devices;a detecting unit that detects link states of the communication devices; anda control unit that performs a process of clearing the management table when a link-down of all of the communication devices has been detected.2. The home side device according to claim 1 , wherein the clearing process is performed after a lapse of a predetermined time from a point in time of the detection of the link-down.3. The home side device according to claim 2 , wherein the control unit is capable of receiving a management frame including a set value of the predetermined time from an external device.4. The home side device according to claim 1 , wherein types of the clearing process include at least one of:a first process for restarting the access processing unit;a second process for erasing the address information in the management table; anda third process for restarting the home side device.5. The home side device according to claim 4 , wherein the control unit is capable of receiving a management frame including a type of the clearing process from an external device.6. The home side device according to claim 1 , whereinthe control unit is capable of ...

COMMUNICATION SYSTEM, COMMUNICATION DEVICE AND COMMUNICATION METHOD

A communication system includes a first communication device, a plurality of transfer destination devices and a plurality of communication devices. The first communication device receives distribution of data and transfers the data to the plurality of transfer destination devices. The plurality of communication devices receive the data via any of the plurality of transfer destination devices. The first communication device requests that a second communication device included among the plurality of transfer destination devices receive the data from a third communication device included among the plurality of communication devices when reception quality of the data in the third communication device is higher than reception quality of the data in the second communication device. The second communication device receives a request from the first communication device and changes a connection destination from the first communication device to the third communication device. 1. A communication system comprising:a first communication device that receives distribution of data;a plurality of transfer destination devices to which the first communication device transfers the data; anda plurality of communication devices that receive the data via any of the plurality of transfer destination devices, whereinthe first communication device requests that a second communication device included among the plurality of transfer destination devices receive the data from a third communication device included among the plurality of communication devices when reception quality of the data in the third communication device is higher than reception quality of the data in the second communication device,the second communication device receives a request from the first communication device, andthe second communication device changes a connection destination from the first communication device to the third communication device.2. The communication system according to claim 1 , wherein selects a ...

MULTI-FABRIC VLAN CONFIGURATION SYSTEM

A multi-fabric VLAN configuration system includes a first fabric with server devices that are configured to communicate using VLANs, a primary I/O module coupled to the server devices, and a first fabric management system coupled to the server devices and the primary I/O module. The first fabric management system identifies VLAN information associated with the VLANs, automatically configures the primary I/O module using the VLAN information, and causes the VLAN information to be transmitted by the primary I/O module. A second fabric in the multi-fabric VLAN configuration system includes a leaf switch device that is coupled to the primary I/O module and that receives the VLAN information, and a second fabric management system that is coupled to the leaf switch device and that receives the VLAN information from the leaf switch device, and automatically configures the leaf switch device using the VLAN information. 1. A multi-fabric Virtual Local Area Network (VLAN) configuration system , comprising: a computing device that is configured to communicate using a virtual network;', 'a first fabric networking device that is coupled to the computing device; and', identify virtual network information associated with the virtual network;', 'automatically configure at least one first fabric networking device port on the first fabric networking device using the virtual network information; and', 'cause the virtual network information to be transmitted by the first fabric networking device across a first fabric boundary of the first fabric; and, 'a first fabric management system that is coupled to the computing device and the first fabric networking device, wherein the first fabric management system is configured to], 'a first fabric including a second fabric networking device that is coupled to the coupled to the first fabric networking device and that is configured to receive the virtual network information across a second fabric boundary of the second fabric; and', receive, ...

Location of Terminals in a Communications Network

A method () of identifying nodes in a communications network is disclosed, the nodes being for use in locating wireless terminals within the network based upon reports from the wireless terminals of transmissions received from the nodes. The method () comprises prioritising combinations of nodes in which at least three nodes are located around a reference node in a configuration satisfying similarity criteria to an idealised star configuration, wherein an idealised star configuration comprises three nodes evenly angularly distributed around, and at the same distance from, a reference node. Also disclosed is a method () for locating a plurality of wireless terminals in a communications network, the network comprising a plurality of network nodes at known locations, wherein the nodes emit wireless transmissions in an unsynchronised manner, such that a time difference exists between the emission time of corresponding transmissions from different nodes. The method comprises receiving reports from a plurality of wireless terminals of transmissions received from the network nodes (), selecting a subset of network nodes () and identifying a plurality of reports reporting transmissions from all of the nodes of the subset (). The method further comprises simultaneously determining the locations of the wireless terminals generating the identified reports and the time differences between emission times of transmissions from the nodes of the subset (). Also disclosed are a computer program product for carrying out the above methods and a network element () configured to carry out the above methods. 1. A method of identifying nodes in a communications network for use in locating wireless terminals within the network based upon reports from the wireless terminals of transmissions received from the nodes , the method comprising:prioritising combinations of nodes in which at least three nodes are located around a reference node in a configuration satisfying similarity criteria to ...

WIRELESS LIGHTING CONTROL SYSTEM

A networked lighting control system includes a variety of lighting control devices, including intelligent luminaires, standalone intelligent control nodes, plug load controllers, and power packs that communicate over a wireless control network and a commissioning network. Each lighting control device includes a dual-band wireless radio communication interface system. The dual-band wireless radio communication interface system is configured for unicast and multicast communication over a first of two different wireless communication bands as well as point-to-point communication over a second wireless communication band. The standalone intelligence control node can be a wall switch or detector. Commissioning and provisioning of the lighting control system is performed over the second communication band via communications with a mobile device and lighting controls are carried out over the first communication band. The lighting control devices may be divided into light control groups or zones. 1. A lighting system , comprising: (a) a light source;', '(b) a driver circuit coupled to the light source;', '(c) a processor coupled to the driver circuit and configured to control light source operation via the driver;', (i) via a lighting control network, over a first of two different wireless communication bands, of light source control operations over the first wireless communication band; and', '(ii) via a commissioning network with a mobile commissioning device, over a second of the two different wireless communication bands, of commissioning, configuration, or maintenance operations for the respective luminaire;, '(d) a dual-band wireless radio communication interface system configured for wireless communication, '(e) a memory accessible to the processor; and', '(f) programming in the memory which configures the processor to control operations of the respective luminaire, including the communications over the two different wireless communication bands via the dual-band ...

CONTAINER TELEMETRY IN DATA CENTER ENVIRONMENTS WITH BLADE SERVERS AND SWITCHES

The present disclosure provides systems, methods, and non-transitory computer-readable storage media for determining container to leaf switch connectivity information in a data center in a presence of blade switches and servers. In one aspect of the present disclosure, a method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server, includes receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center; determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; and generating a visual representation of a topology of the data center based on the container to leaf switch connectivity information. 1. A method comprising:receiving, at a network controller, link connectivity information;receiving, at the network controller, network component link connectivity information;correlating, at the network controller, the link connectivity information with the network component link connectivity information;determining, at the network controller, container connectivity information based on the correlation of the link connectivity information with the network component link connectivity information; andgenerating a visual representation illustrating the container connectivity information.2. The method of claim 1 , wherein the link connectivity information is received from one or more agents.3. The method of claim 1 , wherein the network component link connectivity information is received from a plurality of network components.4. The method of claim 3 , wherein the container connectivity information indicates that one or more containers are connected with one or more network components of the plurality of network components.5. The ...

SMART LIGHT SYSTEM

Systems and methods are disclosed with one or more light emitting diodes (LEDs) with at least one optical transmitter and receiver optically coupled to an optical network over 1 Mbps using at least one LED with a first mode to communicate location and a second mode to communicate using broadband optical transmission; and a controller coupled to the LEDs, the controller communicating with the optical network using the optical transmitter and receiver. 1. A system , comprising:one or more light emitting diodes (LEDs) with at least one optical transmitter and receiver optically coupled to an optical network to communicate using broadband optical transmission, wherein the transmitter spreads transmitted data using a pseudorandom sequence; anda controller coupled to the LEDs, the controller communicating with the optical network using the optical transmitter and receiver.2. The system of claim 1 , comprising a standardized electrical connector of a conventional light bulb or tube and an infrastructure for indoor location-based services.3. The system of claim 1 , comprising an audio transducer receiving music or sound data.4. The system of claim 1 , wherein each light bulb stores a local position or an indoor location.5. The system of claim 1 , wherein the light bulb comprising a position grid.6. The system of claim 1 , wherein the optical network communicates lighting profiles that incorporate time-based control with occupancy claim 1 , daylighting claim 1 , and manual control and wherein the controller integrates time-based lighting control with occupancy sensing control.7. The system of claim 1 , wherein the at least one electrical connector includes a pair of bi-pin end caps configured for engagement with a standard fluorescent tube receiving fixture claim 1 , or an Edison screw connector for a bulb.8. The system of claim 1 , comprising a routing table storing an identifier that uniquely identifies a path through the network to a destination for a data packet claim 1 ...

CONTAINER TELEMETRY IN DATA CENTER ENVIRONMENTS WITH BLADE SERVERS AND SWITCHES

The present disclosure provides systems, methods, and non-transitory computer-readable storage media for determining container to leaf switch connectivity information in a data center in a presence of blade switches and servers. In one aspect of the present disclosure, a method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server, includes receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center; determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; and generating a visual representation of a topology of the data center based on the container to leaf switch connectivity information. 1. A method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server , the method comprising:receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center;determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; andgenerating a visual representation of a topology of the data center based on the container to leaf switch connectivity information.2. The method of claim 1 , further comprising:sending a query to a network component for the link connectivity information, the network component determining the link connectivity information.3. The method of claim 2 , wherein the link connectivity information further includes north-bound neighboring information between the at least one ...

Simplified operation and architecture of a central office point of delivery within a broadband access network of a telecommunications network

A method for operation of a central office point of delivery within a broadband access network of a telecommunications network and/or for flexibly providing, within the central office point of delivery, user-related traffic to at least one central functional entity providing at least one specific functionality within the central office point of delivery or for the central office point of delivery includes: in a first step, the user-related traffic is routed to a specific service edge node, wherein the specific service edge node is selected or determined, by at least one repository node, based on the at least one specific network termination node and/or the specific line termination node; and in a second step, the user-related traffic is provided to the at least one central functional entity.

MAXIMALLY REDUNDANT TREES TO REDUNDANT MULTICAST SOURCE NODES FOR MULTICAST PROTECTION

In general, techniques are described for enabling a network of network devices (or “nodes”) to provide redundant multicast streams from redundant multicast sources to an egress network node. In some examples, the egress network node (or a controller for the network) computes maximally redundant trees (MRTs) from the egress network node to a virtual proxy node virtually added to the network topology by the egress network node for redundant multicast sources of redundant multicast streams. 1. A method comprising:by an egress network node of a network of network nodes connected according to a network topology, computing, using routing information for the network, a pair of maximally redundant trees (MRTs) from the egress network node to a virtual proxy node, with the virtual proxy node as a root of the MRTs and having respective links, in a network graph of the network topology modified to include the virtual proxy node, virtually coupling the virtual proxy node with a first network node of the network and a second network node of the network,wherein the first network node and the second network node of the network distribute, using respective redundant multicast streams, multicast content received by the first network node from a first source device and by the second network node from a second source device,wherein the first source device and second source device are redundant multicast sources for the multicast content,outputting, by the egress network node via a path along a first MRT of the pair of MRTs, a first message requesting to receive one of the redundant multicast streams; andoutputting, by the egress network node via a path along the second MRT of the pair of MRTs, a second message requesting to receive one of the redundant multicast streams.2. The method of claim 1 ,wherein the first source device and the second source device are configured with a shared Internet Protocol address for sourcing the respective redundant multicast streams, andwherein the ...

Integrating service appliances without source network address translation in networks with logical overlays

A network controller for a network implementing a virtual network overlay determines a network gateway via which a service appliance accesses the network. The network controller determines a network gateway via which an application server accesses the network. The network controller distributes first policy data to the network gateway via which the service appliance accesses the network. This first policy data indicates a network policy such that when the policy is executed, the network gateway via which the service appliance accesses the network is configured to forward return packets addressed to a client device sent from an application server to the service appliance. The network controller distributes second policy data to the network gateway via which the application server accesses the network. This second policy data indicates a network policy such that when the policy is executed, the network gateway via which the application server accesses the network is configured to forward return packets addressed to the client device sent from the application server to the network gateway via which the service appliance accesses the network.

SYSTEM AND METHOD FOR ENABLING CONVERSATIONAL LEARNING IN A NETWORK ENVIRONMENT

A system and a method for providing conversational learning is implemented in a network environment. An exemplary method includes receiving a subnet route advertisement that includes an attribute that triggers glean behavior for routing decisions; and installing a subnet entry in a Forwarding Information Base/Adjacency (FIB/ADJ) table. The subnet entry includes a subnet associated with the subnet route advertisement and a corresponding glean adjacency. The corresponding glean adjacency is configured to trigger installation of a host entry associated with a host in an active conversation in a network. 120.-. (canceled)21. A method , comprising:receiving a subnet route advertisement that includes an attribute that triggers glean behavior for routing decisions; andinstalling a subnet entry in a Forwarding Information Base/Adjacency (FIB/ADJ) table, wherein the subnet entry includes a subnet associated with the subnet route advertisement and a corresponding glean adjacency.22. The method of claim 21 , wherein the corresponding glean adjacency is configured to trigger installation of a host entry associated with a host in an active conversation in a network.23. The method of claim 21 , further comprising:receiving a packet for a destination host associated with a particular subnet;upon determining that the particular subnet matches the subnet of the subnet entry in the FIB/ADJ table, installing a host entry for the destination host to the FIB/ADJ table, wherein the host entry includes a host IP address of the destination host and a corresponding adjacency to a network element anchoring the destination host to the network; andforwarding the packet to the destination host.24. The method of claim 23 , further comprising forwarding the packet such that the packet traverses the network via a one-hop route.25. The method of claim 23 , wherein the packet is received from an external host.26. The method of claim 21 , wherein the route advertisement is a direct subnet connection ...

MULTICAST SERVICE WITH IS-IS SPINE-LEAF EXTENSION IN A FABRIC NETWORK

Aspects of the embodiments are directed to systems, methods, and network elements executing instructions stored thereon. Aspects are directed to, for each spine node connected to a leaf node network element, identifying a spine router identifier, identifying a multicast group address, computing a plurality of hash values based on a hash function using the spine router identifier and the multicast group address, identifying a root spine node based on a highest hash value from the plurality of hash values; and transmitting an IS-IS message to root spine node indicating election of spine node as the root spine node. 1. A computer-readable non-transitory medium comprising one or more instructions for a leaf node to identify a root spine node for intermediate-system to intermediate-system multicast packet handling , the instructions when executed on a processor are operable to:for each spine node connected to a leaf node network element, identify a spine router identifier;identify a multicast group address;compute a plurality of hash values based on a hash function using the spine router identifier and the multicast group address;identify a root spine node based on a highest hash value from the plurality of hash values; andtransmit an IS-IS message to root spine node indicating election of spine node as the root spine node.2. The computer-readable non-transitory medium of claim 1 , wherein the multicast group address comprises an internal fabric IP multicast group.3. The computer-readable non-transitory medium of claim 1 , wherein the instructions are further operable when executed to:perform a snoop on one or more multicast group members;identify a customer multicast groups; andconvert the customer multicast group into an internal fabric internet protocol (IP) multicast group using a hash function.4. The computer-readable non-transitory medium of claim 3 , wherein the instructions are further operable when executed to:receive a multicast packet;encapsulate the multicast ...

SYSTEMS AND METHODS TO MANAGE MULTICAST TRAFFIC

In various example embodiments, a system and method for optimizing management of a multicast tree are disclosed. The system receives first multicast group member information, from over a network and via a first packet forwarding system, at a controller server that provides for control of a network comprised of a first virtual local area network including a first packet forwarding system, the first multicast group member information being received by the first packet forwarding system and describing a first end-host computer as joining a first multicast group on the first virtual local area network. The system generates a multicast tree, at the controller server, and communicates a network configuration message to at least one packet forwarding system of a first plurality of packet forwarding systems to enable communication of the multicast traffic for the first multicast group over a portion of the multicast tree. 1. A system comprising:at least one processor and executable instructions accessible on a computer-readable medium that, when executed, cause the at least one processor to perform operations comprising:receiving first multicast group member information, from over a network and via a first packet forwarding system, at a controller server that provides for control of a network comprised of a first virtual local area network comprised of a first plurality of packet forwarding systems including the first packet forwarding system, the first multicast group member information being received by the first packet forwarding system from a first end-host computer and describing the first end-host computer as joining a first multicast group on the first virtual local area network;generating a multicast tree, at the controller server; andcommunicating a network configuration message, over the network, to at least one packet forwarding system of the first plurality of packet forwarding systems, the network configuration message including a packet flow table entry ...

DATA CENTER

A data center includes: a server including a control plane; a data plane that is configured to receive network connection information from the control plane; and a storage group including a plurality of first storage devices. The data plane may be configured to set connections between the server and the plurality of first storage devices based on the network connection information corresponding to each first storage device of the plurality of first storage devices. 1. A data center , comprising:a server including a control plane;a data plane that is configured to receive network connection information from the control plane; anda storage group including a plurality of first storage devices,wherein the data plane is configured to set connections between the server and the plurality of first storage devices based on the network connection information corresponding to each first storage device of the plurality of first storage devices.2. The data center as claimed in claim 1 , wherein the plurality of first storage devices are connected by Ethernet.3. The data center as claimed in claim 1 , wherein:the storage group further includes an electronic device, which includes an Ethernet interface and is connected to the data plane by the Ethernet interface, andthe data plane is configured to transmit data to, or receive data from, the electronic device in accordance with the network connection information.4. The data center as claimed in claim 1 , wherein the data plane is included in one among the plurality of first storage devices claim 1 , which is configured to transmit data to claim 1 , or receive data from claim 1 , another first storage device claim 1 , among the plurality of first storage devices claim 1 , that corresponds to the network connection information.5. The data center as claimed in claim 4 , further comprising:an Ethernet switch connecting the storage group to the server by performing switching on the storage group, wherein:the data plane is included in ...

COMPARING NETWORK SECURITY SPECIFICATIONS FOR A NETWORK

A system compares two network security specifications expected to implement the same network security policy for a network and identifies possible discrepancies between them. The system generates a representation of relations between subnetworks of the network for each network security specification. The representation efficiently stores permitted connections between subnetworks. The system compares the representations corresponding to the two network security specifications to identify discrepancies across the two network security specifications. If discrepancies are identified across the two network security specifications the system generating a report identifying the discrepancies. 1. A computer-implemented method comprising:receiving a first network security specification and a second network security specification, wherein a network security specification defines permitted connections between subnetworks;generating a first representation for the first network security specification and a second representation for the second network security specification, wherein a representation for a particular network security specification identifies a set of subnetworks that are permitted to connect with a subnetwork;comparing the first representation and the second representation by matching connectivity of corresponding pairs of subnetworks according to the first representation and the second representation, wherein the connectivity according to a particular representation indicates whether a particular pair of subnetworks is permitted to connect;identifying one or more discrepancies based on the matching, wherein a discrepancy indicates differences in connectivity according to the first representation and the second representation for corresponding pairs of subnetworks; andgenerating a report describing the one or more discrepancies.2. The method of claim 1 , wherein the first network security specification is expressed using a first language and the second network ...

COMMUNICATION SYSTEM AND COMMUNICATION METHOD

A communication system includes a plurality of leaf switches connected to a plurality of spine switches in topology of a Latin square Fat-Tree, and a plurality of information processing apparatus, wherein each of the information processing apparatuses performs first all reducing, wherein each of first information processing apparatuses performs second all reducing, on the basis of the result of the first all reducing, between the first information processing apparatus and another first information processing apparatus connected to a leaf switch connected to a first spine switch corresponding to a first direction in an area, wherein each of the first information processing apparatuses performs third all reducing, on the basis of the result of the second all reducing, between the first information processing apparatus and another first information processing apparatus connected to a leaf switch connected to a second spine switch corresponding to a second direction in the area. 1. A communication system comprising:a plurality of spine switches;a plurality of leaf switches that are connected to the plurality of spine switches in topology of a Latin square Fat-Tree; anda plurality of information processing apparatus, each of which is connected to any of the plurality of leaf switches,wherein each of the information processing apparatuses that are connected to a first leaf switch which is equivalent to a point other than an infinite point in a limited projective plane corresponding to the Latin square Fat-Tree performs first all reducing or first reducing between the information processing apparatus and another information processing apparatus that is connected to the same first leaf switch,wherein each of first information processing apparatuses that have a result of the first all reducing or a result of the first reducing performs second all reducing, on the basis of the result of the first all reducing or the result of the first reducing, between each of the first ...

FRAME TRANSFER METHOD AND SECURE STAR COUPLER

A secure star coupler in a communication network adopting a time-triggered protocol based on a time slot include: transceivers each of which is connected to one of branches and transmits and receives signals; a routing table holder that holds a predetermined rule indicating a correspondence between a time slot and a branch; and a router that routes a signal received from a first branch to another branch unless a no-transfer condition is satisfied. The no-transfer condition includes a condition that the predetermined rule is not followed by the first branch and a condition that routing of a signal received from a second branch different from the first branch has started in the time slot. 1. A secure star coupler in a communication network adopting a time-triggered protocol based on a time slot ,the communication network including a plurality of branches that are connected to each other via the secure star coupler and each of which includes at least one communication device and a bus, the at least one communication device transmitting and receiving a frame in a corresponding predetermined time slot,the secure star coupler, comprising:a routing rule holder;a router; anda plurality of transceivers each of which is connected to a corresponding one of the plurality of branches,wherein the routing rule holder holds a predetermined rule indicating a correspondence between (i) a time slot and (ii) one of (ii-1) a transmission source branch among the plurality of branches that transmits a physical signal to be transferred by the secure star coupler in the time slot and (ii-2) a transceiver connected to the transmission source branch among the plurality of transceivers,the plurality of transceivers include a first transceiver, the first transceiver receiving a physical signal from a bus of a first branch connected to the first transceiver among the plurality of branches, converting the physical signal into a first digital signal,the router routes the first digital signal to a ...

Routing Messages in an Integrated Circuit Chip Device Using a Crosslinked Tree Structure

An integrated circuit chip device includes monitoring circuitry for monitoring system circuitry, the monitoring circuitry having units connected in a tree-based structure for routing communications through the integrated circuit chip device. The tree-based structure has branches extending from a root unit, each branch comprising a plurality of units, each unit connected to a single unit above in the branch and a single unit below in the branch. Communications are routable between the root unit and a destination unit of a branch via intermediate units of that branch. Crosslinks connect corresponding units of adjacent branches, each crosslink can be enabled to route communications between the root unit and a destination unit of one of the branches the crosslink connects via the other branch the crosslink connects in response to an intermediate unit being deemed defective, that intermediate unit being in the same branch as the destination unit. 1. An integrated circuit chip device comprising:system circuitry; and branches extending from a root unit, each branch comprising a plurality of units, each unit connected to a single unit above in the branch and a single unit below in the branch, whereby communications are routable between the root unit and a destination unit of a branch via intermediate units of that branch; and', 'crosslinks connecting corresponding units of adjacent branches, each crosslink configured to be enabled to route communications between the root unit and a destination unit of one of the branches the crosslink connects via the other branch the crosslink connects in response to an intermediate unit being deemed defective, that intermediate unit being in the same branch as the destination unit., 'monitoring circuitry configured to monitor the system circuitry, the monitoring circuitry comprising units connected in a tree-based structure configured to route communications through the integrated circuit chip device, the tree-based structure comprising2. ...

NETWORK SECURITY

A network security system detects anomalous network device behavior associated with a network device in a group of similar network devices based on baseline network device behavior determined for the group. A graphical visualization may be generated to analyze the groups. 1. A network security system comprising:a communications server including a network interface to receive event information from a plurality of network devices, wherein the event information comprises variables describing events associated with actions occurring at the network devices;a database server including at least one storage device to store the event information;a network analytics server including at least one hardware processor to: determining buckets for each of the variables;', 'bucketing the events, wherein the bucketing includes placing the events in at least one of the buckets based on a subset of the variables;', 'determining a similarity of each network device to all other of the network devices based on the bucketing; and', 'generating the groups of similar network devices based on the similarity of each network device to all other of the network devices; and, 'determine groups of similar network devices based on the captured event information, wherein determining the groups includesdetecting anomalous network device behavior associated with at least one of the network devices in a group of the groups of similar network devices based on baseline network device behavior determined for the group.2. The network security system of claim 1 , wherein to generate the groups the network analytics server is to:determine, for each network device, a distance measure from the similarities of the network device to all other of the network devices;generate a graph based on the distance measures;determine a minimum spanning tree from the graph; anddetermine the groups from the minimum spanning tree.3. The network security system of claim 2 , wherein the network analytics server is to generate a ...

DATA COPY STORAGE METHOD, TERMINAL APPARATUS, AND SERVER APPARATUS

Provided are a data replica storage method, a terminal apparatus, and a server apparatus, which help to improve the reliability of a distributed data storage system without a central node and reduce an amount of migrated data when the number of nodes of the system changes. The method comprises: for each data replica to be stored, selecting child nodes level by level from a pre-selected intermediate node until a leaf node according to a tree-structured a distributed data storage system without a central node, and determining the leaf node as a target storage position of the data replica, selection of a child node comprising: combining an identification of data to be stored and an identification of a child node into a host image, obtaining a mapping value related to the child node using a preset mapping mode, selecting a sub-node of a central node according to the mapping value, and resetting a mapping relationship before each time when the child node is selected; and storing all data replicas to be stored at the target storage positions of the data replicas. 1. A method for storing data replicas , applied in a distributed data storage system with a tree structure and without a center node , wherein the tree structure comprises leaf nodes , on which storage medium devices are located , and intermediate nodes; and characterized in that the method comprises:Step A: for each data replica of data to be stored, selecting a child node, wherein the child node is selected level by level from a pre-selected intermediate node of the tree structure according to the tree structure in a preset child node selecting mode until the child node that is selected is a leaf node, and then determining the leaf node as a target storage position of the data replica;wherein the child node selecting mode is: obtaining a mapping value related to each child node of an intermediate node according to a preset mapping mode by taking each combination of an identification of the data to be stored and ...

Path Selection in Hybrid Networks

Systems and methods for controlling legacy switch routing in one or more hybrid networks of interconnected computers and switches, including generating a network underlay for the one or more hybrid networks by generating a minimum spanning tree (MST) and a forwarding graph (FWG) over a physical network topology of the one or more hybrid networks, determining an optimal path between hosts on the FWG by optimizing an initial path with a minimum cost mapping, and adjusting the initial path to enforce the optimal path by generating and installing special packets in one or more programmable switches to trigger installation of forwarding rules for one or more legacy switches. 1. A computer implemented method for controlling legacy switch routing in one or more hybrid networks of interconnected computers and switches , comprising:generating a network underlay for the one or more hybrid networks by generating a minimum spanning tree (MST) and a forwarding graph (FWG) over a physical network topology of the one or more hybrid networks;determining an optimal path between hosts on the FWG by optimizing an initial path with a minimum cost mapping; andadjusting the initial path to enforce the optimal path by generating and installing special packets in one or more programmable switches to trigger installation of forwarding rules in one or more legacy switches.2. The method of claim 1 , wherein the MST includes a set of links for sending broadcast packets between switches in the one or more hybrid networks.3. The method of claim 1 , wherein the FWG includes a set of links for sending both unicast and broadcast packets between switches in the one or more hybrid networks.4. The method of claim 1 , wherein the adjusting the initial path further comprises:turning off physical links not in the FWG;installing rules on the programmable switches to drop broadcast traffic on all links that are in the FWG but not in the MST; andforwarding traffic along the optimal path.5. The method of ...

Host Routed Overlay With Deterministic Host Learning And Localized Integrated Routing And Bridging

Systems, methods, and devices for improved routing operations in a network computing environment. A system includes a virtual customer edge router and a host routed overlay comprising a plurality of host virtual machines. The system includes a routed uplink from the virtual customer edge router to one or more of the plurality of leaf nodes. The system is such that the virtual customer edge router is configured to provide localized integrated routing and bridging (IRB) service for the plurality of host virtual machines of the host routed overlay. 1. A system comprising:a bare metal server comprising a virtual customer edge router and a host virtual machine;a routed uplink from the virtual customer edge router to one or more of a plurality of leaf nodes in a network topology; anda distributed anycast router, wherein the virtual customer edge router is configured to enact host route learning between the virtual customer edge router and the distributed anycast router;wherein the virtual customer edge router provides localized integrated routing and bridging (IRB) for the host virtual machine.2. The system of claim 1 , wherein the virtual customer edge router is in communication with the host virtual machine on the same bare metal server claim 1 , and wherein the virtual customer edge router comprises memory for storing adjacencies for the host virtual machine that is local to the same bare metal server on which the virtual customer edge router is located.3. The system of claim 1 , further comprising a host routed overlay comprising the host virtual machine on the bare metal server.4. The system of claim 3 , wherein the system comprises a plurality of bare metal servers each comprising a virtual customer edge router claim 3 , and wherein the virtual customer edge routers located on two or more of the plurality of bare metal servers are configured with the same anycast gateway media access control (MAC) to enable host virtual machine mobility across the host routed ...

Routing Optimizations In A Network Computing Environment

Systems, methods, and devices for improved routing operations in a network computing environment. A system includes a network topology comprising a spine node and a plurality of leaf nodes. The system is such that at least one of the plurality of leaf nodes is associated with one or more networking prefixes. The spine node stores a prefix table. The prefix table includes a listing of networking prefixes in the network topology. The prefix table includes an indication of at least one equal-cost multipath routing (ECMP) group associated with each of the networking prefixes in the network topology. The prefix table includes an indication of at least one leaf node of the plurality of leaf nodes associated with each of the networking prefixes in the network topology. 1. A system comprising:a network topology comprising a spine node;the spine node comprising a prefix table and a label table;wherein the prefix table comprises a listing of a plurality of networking prefixes;wherein the label table comprises a per-prefix label advertised from the spine node to an upstream leaf node in the network topology; andwherein the per-prefix label results in a path list on the upstream leaf node that is unique to a corresponding prefix of the plurality of networking prefixes.2. The system of claim 1 , wherein the network topology further comprises a plurality of leaf nodes claim 1 , and wherein the prefix table further comprises:an indication of at least one equal-cost multipath routing (ECMP) group associated with each of the plurality of networking prefixes; andan indication of at least one leaf node of the plurality of leaf nodes associated with each of the plurality of networking prefixes.3. The system of claim 2 , wherein the at least one ECMP group is unique for each of the plurality of networking prefixes such that ECMP resources for the network topology are not shared across the plurality of networking prefixes in the network topology.4. The system of claim 1 , wherein the ...

Method of computing balanced routing paths in fat-trees

A device and method for providing balanced routing paths in a computational grid including determining a type of topology of the computational grid having a plurality of levels, wherein each level includes a plurality of switches, determining whether the type of topology of the computational grid is a fat-tree, determining whether the fat-tree is odd, determining whether the fat-tree is a regular fat-tree, computing a first set of routing paths for the computational grid based on the determining of whether the fat-tree is odd and is a regular fat-tree, computing a second set of routing paths for the computational grid using a topology agnostic routing technique, and configuring forwarding tables in said switches with the first set of computed routing paths when the topology is determined to be a fat-tree and with the second set of computed routing paths when the topology is determined to not be a fat-tree.

Deadlock-free rerouting for resolving local link failures using detour paths

A computing system including network elements arranged in at least one group. A plurality of the network elements are designated as spines and another plurality are designated as leaves, the spines and leaves are interconnected in a bipartite topology, and at least some of the spines and leaves are configured to: receive in a first leaf, from a source node, packets destined to a destination node via a second leaf, forward the packets via a first link to a first spine and to the second leaf via a second link, in response to detecting that the second link has failed, apply a detour path from the first leaf to the second leaf, including a detour link in a spine-to-leaf direction and another detour link a leaf-to-spine direction, and forward subsequent packets, which are received in the first leaf and are destined to the second leaf, via the detour path. 1. A computing system comprising:multiple network elements arranged in at least one group, wherein a plurality of the network elements in the group are designated as spines and another plurality are designated as leaves, wherein the spines and the leaves in the group are interconnected in a bipartite topology, and wherein at least some of the spines and leaves in the group are configured to:receive in a first leaf, from a source node, packets destined to be delivered to a destination node via a second leaf, and forward the packets by the first leaf, via a first link, to a first spine, and forward the packets by the first spine to the second leaf via a second link;in response to detecting that the second link has failed:apply a detour path from the first leaf to the second leaf, the detour path including a detour link that delivers packets in a spine-to-leaf direction and another detour link that delivers packets in a leaf-to-spine direction; andforward subsequent packets, which are received in the first leaf and are destined to the second leaf, via the detour path.2. The computing system according to claim 1 , wherein ...

KEYCHAIN SYNCING

Some embodiments provide non-transitory machine-readable medium that stores a program which when executed by at least one processing unit of a device synchronizes a set of keychains stored on the device with a set of other devices. The device and the set of other devices are communicatively coupled to one another through a peer-to-peer (P2P) network. The program receives a modification to a keychain in the set of keychains stored on the device. The program generates an update request for each device in the set of other devices in order to synchronize the set of keychains stored on device with the set of other devices. The program transmits through the P2P network the set of update requests to the set of other devices over a set of separate, secure communication channels. 120-. (canceled)21. A non-transitory machine-readable medium storing a program which when executed by at least one processing unit of a first peer device synchronizes a set of keychains stored on the first peer device with a set of other peer devices , the first peer device and the set of other peer devices communicatively coupled to one another through a network , the program comprising sets of instructions for:receiving a modification to a keychain in the set of keychains stored on the first peer device;generating an update request for each peer device in the set of peer devices in order to synchronize the set of keychains stored on the first peer device with the set of other peer devices; andtransmitting through the network the set of update requests to the set of other peer devices over a set of separate, secure communication channels.22. The non-transitory machine-readable medium of claim 21 , wherein the modification to the keychain is an addition of a keychain item to the keychain.23. The non-transitory machine-readable medium of claim 21 , wherein the modification to the keychain is a modification of a keychain item in the keychain.24. The non-transitory machine-readable medium of claim 21 , ...

RF TRANSCEIVER AND WIRELESS MESH NETWORK

A RF transceiver for a mesh network node is described. The RF transceiver includes a RF transmitter and a RF receiver coupled to the processor. The RF transceiver is configured in a normal mode of operation as a network node in a wireless mesh network and is configured in a service mode of operation as a network node in a tree network. 1. A mesh network node comprising: a radio frequency (RF) transceiver , wherein the RF transceiver is configured in a normal mode of operation as a network node in a wireless mesh network and is configured in a service mode of operation as a network node in a tree network.2. The mesh network node of :wherein in the service mode of operation, the RF transceiver is further configured as at least one of a server and a client and wherein the RF transceiver is configured to communicate to a single predetermined first further RF transceiver when configured as a client, wherein the single predetermined first further RF transceiver is configured as a server.3. The mesh network node of wherein the RF transceiver comprises a memory circuit claim 2 , wherein in the service mode of operation claim 2 , the RF transceiver is configured as a server and a client and is further configured to receiving a data request from a predetermined second further RF transceiver configured as a client claim 2 , to check if the data requested is available in the memory circuit claim 2 , and wherein if the data is available the RF transceiver is further configured to transmit the data to the second further RF transceiver claim 2 , and if the data is not available the RF transceiver is further configured to transmit a data request to the single predetermined further RF transceiver.4. The mesh network node of wherein the data comprises a firmware update for the RF transceiver.5. The mesh network node of wherein in the service mode of operation claim 4 , the RF transceiver is configured to send a firmware update notification to the second further RF transceiver prior ...

SYSTEM AND METHOD FOR SUPPORTING FAST HYBRID RECONFIGURATION IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT

A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks. 1. A system for supporting fast hybrid reconfiguration in a high performance computing environment , comprising:one or more microprocessors; a plurality of switches, the plurality of switches comprising at least a leaf switch, wherein each of the plurality of switches comprising a plurality of switch ports,', 'a plurality of host channel adapters, each host channel adapter comprising at least one host channel adapter port,', 'a plurality of end nodes, wherein each of the plurality of end nodes are associated with at least one host channel adapter of the plurality of host channel adapters;, 'a first subnet, the first subnet comprising'}wherein the plurality of switches of the first subnet are arranged in a network architecture having a plurality of levels, each of the plurality of levels comprising at least one switch of the plurality of switches;wherein the plurality of switches is initially configured according to a first configuration method, the first configuration method being associated with a first ordering of the plurality of end nodes;wherein a subset of the plurality of switches is configured as a sub-subnet of the first subnet, the sub-subnet of the first subnet comprising a number of levels fewer than the plurality of levels of the first subnet;wherein the sub-subnet of the first subnet is reconfigured according to a second configuration method.2. The system of claim 1 ,wherein the plurality of end nodes of the first subnet are interconnected via the plurality of switches.3. The system of claim 2 ,wherein a subset of the plurality of end nodes are associated with the sub-subnet of the first subnet; ...

SIMPLIFYING USER INTERACTIONS WITH DECISION TREE DIALOG MANAGERS

A method for simplifying user interactions with decision tree dialog managers is provided. The method may include receiving from a client computer, by a server computer, a user input. The server computer may identify one or more candidate nodes of a decision tree corresponding to the received user input. An entropy value may be calculated by the server computer for each of the identified candidate nodes. The server computer may then select a current node from among the candidate nodes, whereby the selected current node has a lowest calculated entropy value. A prompt associated with the selected current node may be transmitted to the user by the server computer. 1. A method for simplifying interactions by a user with a decision tree dialog manager , comprising:receiving, by a server computer, a user input from a client computer over a network;identifying, by the server computer, one or more candidate nodes of a decision tree corresponding to the received user input;determining, by the server computer, if more than one candidate node has been identified;calculating, by the server computer, an entropy value for each of the identified candidate nodes;selecting, by the server computer, a current node from among the identified candidate nodes, wherein the selected current node has a lowest calculated entropy value; andtransmitting to the user over the network, by the server computer, a first prompt associated with the selected current node.2. The method of claim 1 , further comprising:determining, by the server computer, based on the identification of only one candidate node, whether the identified one candidate node is a leaf node.3. The method of claim 2 , further comprising:transmitting to the user over the network, by the server computer, an output associated with the one candidate node, based on the determination that the single candidate node is a leaf node.4. The method of claim 2 , further comprising:transmitting to the user over the network, by the server ...

Aggregation protocol

A switch in a data network is configured to mediate data exchanges among network elements. The apparatus further includes a processor, which organizes the network elements into a hierarchical tree having a root node network element, vertex node network elements child node network elements that include leaf node network elements. The leaf node network elements are originate aggregation data and transmit the aggregation data to respective parent vertex node network elements. The vertex node network elements combine the aggregation data from at least a portion of the child node network elements, and transmit the combined aggregation data from the vertex node network elements to parent vertex node network elements. The root node network element is operative for initiating a reduction operation on the aggregation data. 1. A method , comprising the steps of:organizing an aggregation collective group of network elements of a data network into a bierarchical tree having a root node network element, vertex node network elements and child node network elements, the child node network elements comprising leaf node network elements;originating aggregation data in the leaf node network elements;iteratively performing the steps of:receiving the aggregation data from the child node network elements in respective parent vertex node network elements thereof; andin the vertex node network elements combining the received aggregation data from at least a portion of the child node network elements thereof; andtransmitting the combined received aggregation data from the vertex node network elements to parent vertex node network elements thereof; andin the root node network element initiating a reduction operation on the aggregation data.2. The method according to claim 1 , wherein organizing an aggregation collective group of network elements comprises conforming a mapping of the hierarchical tree to a topology of the data network.3. The method according to claim 1 , further comprising ...

In-vehicle network system

An in-vehicle network system includes: an upper device; a first intermediate device that is connected to the upper device directly or via at least one device and is configured to communicate with the upper device using a first communication system; a second intermediate device that is connected to the upper device directly or via at least one device and is configured to communicate with the upper device using a second communication system; and a first lower device that is directly connected to the first intermediate device and is configured to communicate with the first intermediate device using the first communication system, and that is directly connected to the second intermediate device and is configured to communicate with the second intermediate device using the second communication system.

Single Node And Multiple Node Datastore Architecture In A Network Routing Environment

Systems, methods, and devices for offloading network data to a datastore. A system includes a plurality of instances of a datastore node in a single networking device, each of the plurality of instances of the datastore node comprising: a datastore; a publisher independent of the datastore for publishing data to the datastore; a subscriber independent of the datastore for receiving information from the datastore; a replicator agent configured to connect to the datastore as a publisher or a subscriber; and a persistent storage agent configured to connect to the datastore as a publisher or a subscriber.

BARRIER SYNCHRONIZATION SYSTEM AND PARALLEL INFORMATION PROCESSING APPARATUS

A barrier synchronization system, a parallel information processing apparatus, and the like are described in the embodiments. In an example, provided is a solution to reduce latency time and improve processing speed in barrier synchronization. The parallel information processing apparatus includes: a completion information storage configured to store completion information, wherein the completion information includes information relating to completion of processing of an own apparatus and information relating to completion of processing of a lower information processing apparatus located in the tree structure; and a control circuit configured to, in response to a determination result indicating that a current status amounts to a given condition, instruct a specified information processing apparatus to forcibly suspend processing, the specified information processing apparatus being an apparatus that has not yet completed processing before all of the plurality of information processing apparatuses have completed the processing. 1. A barrier synchronization system comprising:a plurality of information processing apparatuses configured to perform parallel processing while synchronizing by barrier synchronization, each information processing apparatus being configured to be one of a plurality of nodes in a tree structure and being associated with one or more of other nodes from among the plurality of nodes, a completion information storage; and', 'a control circuit,, 'wherein each of the plurality of information processing apparatuses includeswherein the completion information storage of a respective information processing apparatus is configured to store completion information including information relating to completion of processing of an own apparatus being the respective information processing apparatus, the completion information further including information relating to completion of processing of a lower information processing apparatus in case that the own ...

METHOD AND COMPUTER NETWORK FOR TRANSMITTING MESSAGES

The invention relates to a method for transmitting messages in a computer network and to a corresponding computer network. A first group of components is provided, wherein the components of the first group send and/or forward and/or receive messages via one or more wired link(s) (), wherein each component of the first group is either a computing node ( X), a star coupler ( X), or a star coupler of a multi-hop network (), and wherein a second group of components is provided, wherein the components of the second group send and/or forward and/or receive messages via one or more wireless link(s) (), wherein each component of the second group is either a computing node ( X X) or a star coupler ( X X), and wherein each component of the first and the second group has a local clock, and wherein the clocks of the components of the first and the second group are synchronised to one another or are synchronised with one another, and wherein the components of the first and the second group send and/or forward and/or receive messages in a coordinated manner in accordance with a common communications schedule. 2. The method according to claim 1 , wherein one claim 1 , two claim 1 , or more of the components of the first group also send and/or receive and/or forward messages via one or more wireless links.3. The method according to claim 2 , wherein the components of the first group that send and/or receive and/or forward messages via one or more wireless links send and/or receive and/or forward these messages in accordance with the common communications schedule.4. The method according to claim 1 , wherein one claim 1 , two claim 1 , or more of the components of the second group also send and/or receive and/or forward messages via one or more wired links.5. The method according to claim 4 , wherein the components of the second group that send and/or receive and/or forward messages via one or more wired links send and/or receive and/or forward these messages in accordance with the ...

Loop Conflict Avoidance In A Network Computing Environment

Systems, methods, and devices for improved routing operations in a network computing environment. A system includes a network topology comprising a plurality of spine nodes and a plurality of leaf nodes, wherein a link between a first spine node and a first leaf node is inactive. The first spine node includes one or more processors configurable to execute instructions stored in non-transitory computer readable storage media. The instructions include receiving a packet to be transmitted to the first leaf node. The instructions include identifying an alternative spine node at a same level in the network topology. The instructions include attaching a tunnel label to the packet, wherein the tunnel label indicates the packet should be transmitted to the alternative spine node. 1. A system comprising:a network topology comprising a plurality of spine nodes and a plurality of leaf nodes, wherein a link between a first spine node and a first leaf node is inactive; receiving a packet to be transmitted to the first leaf node;', 'identifying an alternative spine node at a same level in the network topology; and', 'attaching a tunnel label to the packet, wherein the tunnel label indicates the packet should be transmitted to the alternative spine node., 'the first spine node comprising one or more processors configurable to execute instructions stored in non-transitory computer readable storage media, the instructions comprising2. The system of claim 1 , wherein the instructions further comprise identifying the link between the first spine node and the first leaf node is inactive claim 1 , and wherein identifying the alternative spine node at the same level comprises analyzing a redundancy group for the first spine node.3. The system of claim 1 , wherein the instructions further comprise advertising a local loopback route to other spine nodes within the same level in the network topology.4. The system of claim 1 , wherein the instructions further comprise populating a redundancy ...

SYSTEMS AND METHODS FOR OPERATING A NETWORKING DEVICE

Methods and systems are described for compressing a tree structure associating network packet signatures with network packet metadata, the tree structure comprising a plurality of non-leaf nodes of single bit test nodes and a plurality of leaf nodes comprising network packet metadata, the method comprising determining whether the sub-portion of the tree structure is to be compressed. If determination is made that the sub-portion of the tree structure is to be compressed, generating a compressed node data structure, the compressed node data structure comprising a path of the sub-portion of the tree structure, the path comprising a sequence of bits formed by a concatenation of the single bits associated with each one of the consecutive non-leaf nodes of the sub-portion of the tree structure, the number of bits of the sequence being equal or greater than the compression threshold. 1. A method of analysing network packets for preventing attacks of a network by filtering illegitimate network packets while letting legitimate network packets access the network , the filtering being based on an association between network addresses and data packet classifications , the association being implemented as a tree structure , the data packet classifications allowing determining whether a network packet is legit , the method being executed by a computing device , the method comprising: determining, based on a number of consecutive non-leaf nodes having a single child and a compression threshold, whether a sub-portion of the tree structure comprising the consecutive non-leaf nodes having a single child is to be compressed;', 'generating a compressed sub-portion of the tree structure, the compressed sub-portion of the tree structure comprising a sequence of bits formed by a concatenation of the single bits associated with each one of the consecutive non-leaf nodes of the sub-portion of the tree structure, the number of bits of the sequence being equal or greater than the compression ...

SMART REFRIGERATOR-BASED NETWORKING AND CONTROL METHOD AND SYSTEM, AND SMART REFRIGERATOR

The present disclosure provides a smart refrigerator-based networking and control method, a smart refrigerator-based networking and control system, and a smart refrigerator. Wherein the smart refrigerator-based networking and control method for the smart refrigerator comprises obtaining device information of the smart refrigerator; receiving device information and network access request sent by a device to be connected to the network through a Bluetooth assembly; bundling device information of the device to be connected to the network and device information of the smart refrigerator, and generating bundling information; and sending device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information to a server, so the server responds to the network access request according to device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information. The present disclosure realizes that the small home appliances and other devices which need to be connected to the network are connected to smart refrigerators through Bluetooth Low Energy technology, and connected to the network through protocol conversion, reducing the connection of Wi-Fi devices at the routing end, reducing routing loads, and enhancing the stability of the star architecture. 1. A smart refrigerator-based networking and control method for a smart refrigerator , comprising:obtaining device information of the smart refrigerator;receiving device information and network access request sent by a device to be connected to a network through a Bluetooth assembly;bundling device information of the device to be connected to the network and device information of the smart refrigerator, and generating bundling information; andsending device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information to a ...

FRACTAL TREE STRUCTURE-BASED DATA TRANSMIT DEVICE AND METHOD, CONTROL DEVICE, AND INTELLIGENT CHIP

The present invention provides a fractal tree structure-based data transmit device and method, a control device, and an intelligent chip. The device comprises: a central node that is as a communication data center of a network-on-chip and used for broadcasting or multicasting communication data to a plurality of leaf nodes; the plurality of leaf nodes that are as communication data nodes of the network-on-chip and for transmitting the communication data to a central leaf node; and forwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data; the central node, the forwarder modules and the plurality of leaf nodes are connected in the fractal tree network structure, and the central node is directly connected to M the forwarder modules and/or leaf nodes, any the forwarder module is directly connected to M the next level forwarder modules and/or leaf nodes. 1. A fractal tree network structure-based data transmit device , comprising:a central node that is as a communication data center of a network-on-chip and used for broadcasting or multicasting communication data to a plurality of leaf nodes;the plurality of leaf nodes that are as communication data nodes of the network-on-chip and for transmitting the communication data to a central leaf node; andforwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data;the central node, the forwarder modules and the plurality of leaf nodes are connected in the fractal tree network structure, and the central node is directly connected to M the forwarder modules and/or leaf nodes, any of the forwarder modules is directly connected to M the next level of the forwarder modules and/or the leaf nodes.2. The fractal tree network structure-based data transmit device according to claim 1 , wherein each of the nodes comprises a local cache structure for storing a subset of the data published by the central node.3. The ...

FAST FORWARDING RE-CONVERGENCE OF SWITCH FABRIC MULTI-DESTINATION PACKETS TRIGGERED BY LINK FAILURES

A network device receives multi-destination packets from a first node and forwards at least a first of the multi-destination packets to another network device using a first multi-destination tree with respect to the network device. The network device detects that a link associated with the first multi-destination tree satisfies one or more criteria and, in response to detecting that the link satisfies the one or more criteria, selects a second multi-destination tree with respect to the network device. The network device forwards at least a second of the multi-destination packets to the other network device using the second multi-destination tree. 1. A computer-implemented method , comprising:detecting, by a first network device, that a link associated with a first multi-destination tree satisfies one or more criteria, wherein the first multi-destination tree is one of a plurality of multi-destination trees available at the first network device; and evaluating, by the first network device, a plurality of links associated with each of the plurality of multi-destination trees using one or more metrics;', 'selecting, by the first network device, a second multi-destination tree from the plurality of multi-destination trees, based on the evaluation; and', 'modifying a status of the first multi-destination tree at the first network device to prevent at least a second network device from using the first multi-destination tree., 'in response to detecting that the link satisfies the one or more criteria2. The computer-implemented method of claim 1 , further comprising receiving claim 1 , by the first network device claim 1 , an indication of the plurality of multi-destination trees from a controller.3. The computer-implemented method of claim 2 , wherein the status of the first multi-destination tree is modified prior to a removal of the first multi-destination tree from the plurality of multi-destination trees by the controller.4. The computer-implemented method of claim 1 , ...

DISTANCE VECTOR NEGATIVE SOUTHBOUND TOPOLOGY INFORMATON FOR ROUTING IN FAT TREES (RIFT) ROUTE

In one embodiment, a method is performed. A spine node in communication with a network may determine a subtree of a shadow cone of the spine node. The subtree may comprise a plurality of nodes and a plurality of links connecting pairs of the nodes. The spine node may determine a disaggregated route to a first leaf node to which a disaggregated prefix may be attached. The disaggregated route may be propagated to the plurality of the nodes of the subtree. 1. A method comprising:determining, at a spine node in communication with a network, a disaggregated route to a first leaf node of the network, wherein a disaggregated prefix is attached to the first leaf node;propagating a packet comprising information relating to the disaggregated route from an ingress leaf node of a tunnel to an egress leaf node of the tunnel; andinstalling a state at a node along a path from the ingress leaf node to the egress leaf node.2. The method of claim 1 , wherein installing the state at the node along the path from the ingress leaf node to the egress leaf node comprises installing claim 1 , by the spine node claim 1 , the state at the node along the path from the ingress leaf node to the egress leaf node.3. The method of claim 1 , further comprising:tunneling packets leaf-to-leaf on an overlay level.4. The method of claim 3 , wherein tunneling the packets leaf-to-leaf on the overlay level comprises tunneling the packets leaf-to-leaf on the overlay level though a virtual extensible local area network (VxLAN).5. The method of claim 3 , wherein tunneling the packets leaf-to-leaf on the overlay level comprises matching a tunnel at each hop to a plurality of feasible successors installed by the spine node.6. The method of claim 3 , wherein tunneling the packets leaf-to-leaf on the overlay level comprises tunneling the packets leaf-to-leaf on the overlay level through source/destination (S/D) routing.7. The method of claim 1 , wherein installing the state at the node along the path from the ...

NEAR-HITLESS UPGRADE OR FAST BOOTUP WITH VIRTUALIZED HARDWARE

An embodiment is directed to switchover operations with a virtualized network device in a cloud or remote infrastructure. The virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable. 1. A network device comprising:a host processor executing instructions for control-plane operations that manage and maintain a plurality of data-plane-associated tables of a switch-fabric of the network device;a network interface;{'claim-text': ['establish, via the network interface, a network connection with a remote computing device comprising a remote processor;', 'direct the remote computing device to instantiate a virtualized standby switch, wherein the instantiated virtualized standby switch is configured to execute a set of instructions to manage and maintain the plurality of data-plane-associated tables of the switch-fabric of the network device;', 'synchronize control-plane states of the virtualized standby switch with control-plane states of the network device; and', 'reset the host processor to boot-up with a new system image in an upgrade or boot-up process, wherein during the upgrade process, the virtualized standby switch is configured to update, via data-plane transaction messages over the network interface, one or more of the plurality of data-plane-associated tables, and states of the network device.'], '#text': 'a memory having computer readable instructions, wherein execution of the computer readable instruction, cause the host processor to:'}2. The network device of claim 1 , further comprising:a second processor unit or upgrade logic circuit configured to:write a first set of bus-interconnect transactions to a bus-interconnect of the network device based on a first ...

Asynchronous Object Manager In A Network Routing Environment

Systems, methods, and devices for offloading network data to a datastore. A system includes routing chip hardware and an asynchronous object manager in communication with the routing chip hardware. The asynchronous object manager is configurable to execute instructions stored in non-transitory computer readable storage media. The instructions include asynchronously receiving a plurality of objects from one or more producers. The instructions include identifying one or more dependencies between two or more of the plurality of objects. The instructions include reordering the plurality of objects according to the one or more dependencies. The instructions include determining whether the one or more dependencies is resolve. The instructions include, in response to determining the one or more dependencies is resolved, calling back an application and providing one or more of the plurality of objects to the application. 1. A system comprising:routing chip hardware; and asynchronously receiving a plurality of objects comprising a parent object and one or more dependent objects;', 'identifying a unique key associated with the parent object;', 'identifying the one or more dependent objects comprising the unique key; and', 'reordering the plurality of objects based on the unique key such that the one or more dependent objects depend upon the parent object., 'an asynchronous object manager in communication with the routing chip hardware, wherein the asynchronous object manger is configurable to execute instructions stored in non-transitory computer readable storage medium, the instructions comprising2. The system of claim 1 , wherein the asynchronous object manager is the bottom-most layer of a software stack for managing operations of a networking device3. The system of claim 2 , wherein the networking device managed by the asynchronous object manager is a switch or a router.4. The system of claim 1 , wherein the instructions further comprise:identifying one or more ...

INTEGRATED ARRANGEMENT HAVING AN ELECTRICAL VOLTAGE SUPPLY AND A COMMUNICATION INTERFACE

In an arrangement of an electrically communicative voltage supply for controlled operation of at least one electrically operable IO-Link device using an electrical DC voltage provided by a voltage supply unit as well as an IO-Link communication interface which is provided for the controlled operation of the at least one IO-Link device and formed with at least one channel, the IO-Link communication interface which is formed with at least one channel and the voltage supply unit form a structural unit and the IO-Link communication interface includes an IO-link master providing a gateway function. 1335350300305335350305300310305. An arrangement of a communicative voltage supply for controlled operation of at least one electrically operable IO-link device (-) , by means of an electrical DC voltage provided by a voltage supply unit () as well as an IO-link communication interface () which is provided for the controlled operation of the at least one IO-link device (-) and is formed with at least one channel , wherein the TO-link communication interface () formed with at least one channel and the voltage supply unit () are formed as a structural unit () and the IO-link communication interface () comprises an IO-link master providing a gateway function.2305315330335350360305315350. The arrangement according to claim 1 , wherein the communication interface () formed with at least one channel has at least one IO-link master having at least one port (-) for connection to the at least one IO-link device (-) claim 1 , wherein the IO-Link Master provides a gateway between a fieldbus system () and an IO-Link communication system ( claim 1 , -).3300. The arrangement according to claim 1 , wherein the voltage supply unit () has an AC/DC converter equipped with power electronics.4. The arrangement according to claim 3 , wherein the power electronics are formed with SiC transistors and/or with GaN transistors.5360305315350. The arrangement according to claim 2 , wherein the fieldbus ...

Virtual shortest path tree establishment and processing methods and path computation element

The present application provides virtual shortest path tree establishment and processing methods and a path computation element, so as to improve a resource utilization rate in a process of establishing and processing a virtual shortest path tree. In a process of establishing the virtual shortest path tree, a cost of an established path from a root node (a destination node) to a leaf node is compared with a cost threshold, and a new path branch is added to the VSPT when the cost is less than the cost threshold. In a process of processing the virtual shortest path tree, a resource occupied by a path branch in the VSPT that does not belong to an optimal path is released after the optimal path is obtained.

APPARATUS AND METHOD TRANSMITTING PACKETS

Provided is a multi network and method to transmit packets. The multi network includes a mesh network, a tree network, and a network interface connected to the mesh network and the tree network and configured to transmit, through the mesh network and the tree network, a packet generated by a processing unit, of a processing system having plural processing units, at a starting point to a destination point for another processing unit of the processing system and configured to selectively inject the packet into one of the mesh network and the tree network to transmit the packet to the other processing unit. 1. A multi network comprising:a mesh network;a tree network; anda network interface connected to the mesh network and the tree network and configured to transmit, through the mesh network and the tree network, a packet generated by a processing unit, of a processing system having plural processing units, at a starting point to a destination point for another processing unit of the processing system and configured to selectively inject the packet into one of the mesh network and the tree network to transmit the packet to the other processing unit.2. The multi network of claim 1 , wherein claim 1 , for the selective injecting of the packet claim 1 , the network interface is configured to select to inject the packet into the one of the mesh network and the tree network based on a determined hop-count of the mesh network regarding the packet and a determined hop-count of the tree network regarding the packet.3. The multi network of claim 2 , wherein claim 2 , for the selective injecting of the packet claim 2 , the network interface is configured to only inject the packet into the tree network when the determined hop-count of the tree network is less than the determined hop-count of the mesh network.4. The multi network of claim 2 , wherein claim 2 , for the selective injecting of the packet claim 2 , the network interface is configured to calculate a hop-count gain ...

OPERATION AND ARCHITECTURE OF A CENTRAL OFFICE POINT OF DELIVERY WITHIN A BROADBAND ACCESS NETWORK OF A TELECOMMUNICATIONS NETWORK

A central office point of delivery within a broadband access network of a telecommunications network includes: access network facing nodes; and a control function and/or a switching fabric and/or service edge nodes. Execution of network attachment tasks and/or further functional or configuration tasks within the central office point of delivery involves using an execution state database as well as stateless execution service functionalities being assigned to different execution stages realized within the central office point of delivery, and a message bus connecting the different execution stages, wherein the execution stages comprise at least an access stage, a processing stage, and a device stage, wherein the execution service functionalities—in order to process or execute the network attachment tasks and/or further functional or configuration tasks—generate a plurality of messages on the message bus and consume a plurality of messages from the message bus. 1. A method for improved and simplified operation and architecture of a central office point of delivery within a broadband access network of a telecommunications network and/or for enhanced execution of network attachment tasks and/or further functional or configuration tasks within the central office point of delivery , wherein the central office point of delivery and/or the broadband access network comprisesaccess network facing nodes, anda control function and/or a switching fabric and/or service edge nodes,wherein execution of network attachment tasks and/or further functional or configuration tasks within the central office point of delivery involves using an execution state database as well as stateless execution service functionalities being assigned to different execution stages realized within the central office point of delivery, and a message bus connecting the different execution stages, wherein the execution stages comprise at least an access stage, a processing stage, and a device stage, wherein ...

SCALABLE DISTRIBUTED END-TO-END PERFORMANCE DELAY MEASUREMENT FOR SEGMENT ROUTING POLICIES

The present technology is directed to a scalable solution for end-to-end performance delay measurement for Segment Routing Policies on both SR-MPLS and SRv6 data planes. The scalability of the solution stems from the use of distributed PM sessions along SR Policy ECMP paths. This is achieved by dividing the SR policy into smaller sections comprised of SPT trees or sub-paths, each of which is associated with a Root-Node. Downstream SID List TLVs may be used in Probe query messages for signaling SPT information to the Root-Nodes Alternatively, this SPT signaling may be accomplished by using a centralized controller. Root-Nodes are responsible for dynamically creating PM sessions and measuring delay metrics for their associated SPT tree section. The root-nodes then send the delay metrics for their local section to an ingress PE node or to a centralized controller using delay metric TLV field of the response message. 1. A computer-implemented method for implementing distributed delay measurement , the method comprising:dividing a segment routing policy domain into a plurality of sections;creating one or more delay measurement sessions along one or more of the plurality of sections; andcalculating one or more end to end delay metrics for the segment routing policy domain based on the one or more delay measurement sessions.2. The computer-implemented method of claim 1 , wherein the one or more end to end delay metrics are associated with one or more end-to-end paths between an ingress node and an egress node.3. The computer-implemented method of claim 1 , wherein the plurality of sections claim 1 , paths spanning each of the plurality of sections claim 1 , and corresponding Root-Nodes are determined by one or more delay measurement query messages sent by an ingress node.4. The computer-implemented method of claim 3 , wherein an extended link delay metric is used in the one or more delay measurement query messages sent by the ingress node.5. The computer-implemented method ...

DAISY CHAIN NETWORK OF SENSORS

Provided herein is a system and method for a sensor system on a vehicle. The sensor system comprises sensors connected with one another in a daisy chain communication network. The sensor system further comprises a controller connected to at least one of the sensors. The controller is configured to operate the vehicle based on data from the sensors and to operate the daisy chain communication network. 1. A sensor system on a vehicle , comprising:sensors connected with one another in a daisy chain communication network; anda controller connected to at least one of the sensors, the controller being configured to operate the vehicle based on data from the sensors and to operate the daisy chain communication network.2. The sensor system of claim 1 , wherein: accept a data packet from another sensor;', 'append an additional data packet to the accepted data packet; and', 'transmit a combined data packet comprising the accepted data packet and the additional data packet to an additional sensor or the controller; and, 'a sensor of the sensors is configured tothe data packet and the additional data packet comprise respective timestamps indicating times at which each of the data packet and the additional data packet were captured and transmission delays of each of the data packet and the additional data packet.3. The sensor system of claim 2 , wherein:in response to the sensor transmitting the combined data packet to the controller, the controller is configured to process the data packet and the additional data packet based on the respective timestamps of the data packet and the additional data packet.4. The sensor system of claim 1 , wherein:in response to a single-point failure occurring between two neighboring sensors, one of the neighboring sensors detects the single-point failure and communicates the failure to the controller; andthe controller reverses a direction of data transmission in response to the communication of the failure.5. The sensor system of claim 1 , ...

Relay Device, Program, and Display Control Method

A relay device acquires network topology data representing a network topology that includes a connection relationship of each relay device and a connection relationship of a terminal device connected to each relay device in a local area network (LAN), and displays, on a display device, an image of a tree structure in which each relay device included in the LAN corresponds to a node, as an image of the network topology represented by the acquired network topology data. The relay device displays, on the display device, the image of the tree structure in which a node corresponding to a relay device designated in advance among the relay devices included in the LAN and nodes of up to directly below the designated node are set as a drawing target. 1. A relay device for connecting to a display device , the relay device comprising:a processor and a memory storing instructions, the processor executing the stored instructions to:acquire network topology data representing a network topology that includes a connection relationship of each relay device and a connection relationship of a terminal device connected to each relay device in a local area network (LAN);display, on the display device, an image of a tree structure in which each relay device included in the LAN corresponds to a node, as an image of the network topology represented by the acquired network topology data; anddisplay, on the display device, the image of the tree structure in which a node corresponding to a relay device designated in advance among the relay devices included in the LAN and nodes of up to directly below the designated node are set as a drawing target.2. The relay device according to claim 1 , wherein claim 1 , as a response to being given an expansion instruction for a certain node included in the drawing target claim 1 , the processor further executes the stored instructions to display contents of the display device by setting nodes of up to directly below the node to which the expansion ...

FRACTAL TREE STRUCTURE-BASED DATA TRANSMIT DEVICE AND METHOD, CONTROL DEVICE, AND INTELLIGENT CHIP

One example of a device comprises: a central node that is as a communication data center of a network-on-chip; a plurality of leaf nodes that are as communication data nodes of the network-on-chip and for transmitting the communication data to a central leaf node; forwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data, wherein the plurality of leaf nodes are divided into N groups, each group having the same number of leaf nodes, the central node is individually in communication connection with each group of leaf nodes by means of the forwarder module, a communication structure constituted by each group of leaf nodes has self-similarity, and the plurality of leaf nodes are in communication connection with the central node in a complete multi-way tree approach by means of the forwarder modules of multiple levels. 1. A fractal tree network structure-based data transmit device , comprising:a central node that is as a communication data center of a network-on-chip and used for broadcasting or multicasting communication data to a plurality of leaf nodes;a plurality of leaf nodes that are as communication data nodes of the network-on-chip and for transmitting the communication data to a central leaf node; andforwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data,wherein the plurality of leaf nodes are divided into N groups, each group having the same number of leaf nodes, the central node is individually in communication connection with each group of leaf nodes by means of the forwarder module, a communication structure constituted by each group of leaf nodes has self-similarity, and the plurality of leaf nodes are in communication connection with the central node in a complete multi-way tree approach by means of the forwarder modules of multiple levels.2. The fractal tree network structure-based data transmit device according to claim 1 , ...

CONFIGURATION DATA MIGRATION FOR DISTRIBUTED MICRO SERVICE-BASED NETWORK APPLICATIONS

Techniques are described for in-service configuration data migration for distributed micro service-based applications. In one example, a network device comprises a plurality of legacy data repositories comprising configuration data in key-value pair format that specifies a plurality of parameters and corresponding values for operation of the network device, and a hierarchical configuration data model having a plurality of nodes arranged in a hierarchical organization having a root node and a plurality of leaf nodes. Each of the nodes of the configuration data model is configured to store a set of configuration data parameters for the network device. One or more of the nodes includes a plurality of external references to respective parameters of the plurality of parameters stored within the plurality of legacy data repositories. Process circuitry is configured to perform a migration of the configuration data from the legacy data repositories to the hierarchical data model. 1. A method for migrating configuration data for a network device , the method comprising:storing, on one or more computer-readable media of the network device, a plurality of legacy data repositories comprising the configuration data for the network device in a key-value pair format that specifies a plurality of parameters and corresponding values for operation of the network device;storing a hierarchical configuration data model for the network device, wherein the hierarchical configuration data model includes a plurality of nodes arranged in a hierarchical organization having a root node and a plurality of leaf nodes, wherein each of the plurality of nodes of the hierarchical configuration data model is configured to store a set of configuration data parameters for the network device, and wherein the plurality of nodes include a plurality of external references to respective parameters of the plurality of parameters stored within the plurality of legacy data repositories; andperforming a ...

DYNAMIC WIRELESS NETWORK TOPOLOGY FOR REDUCED SPECTRUM FLOODING

In some configurations, the method of operating a system with dynamic wireless network topology with reduced spectrum flooding involve scanning with a first device in mesh network for beacon packets from other devices in the mesh network during a random back off period. In response to the first device not receiving a beacon packet from the other devices during the random back off period, the first device initiates an election protocol by sending an election protocol packet with its unique election protocol identifier to the other devices. In response to receiving a beacon packet from a second device, the first device stores the unique node identifier, assigns the second device as a leader node device, retransmits the unique node identifier of the second device and leader node information in a protocol packet. A command packet is communicated through the mesh network by way of at least one leader node device. 1. A method of operating a system with dynamic wireless network topology with reduced spectrum flooding , the method comprising:scanning with a first device in mesh network for beacon packets from other devices in the mesh network during a random back off period, the beacon packets comprising a unique node identifier of the other devices;operating the first device to initiate an election protocol by sending an election protocol packet comprising a unique election protocol identifier of the first device to the other devices, in response to the first device not receiving at least one beacon packet from the other devices during the random back off period;storing the unique node identifier of a second device on the first device, assigning the second device as a leader node device, retransmitting the unique node identifier of the second device and leader node information in a protocol packet to the second device to set the second device as the leader node device, in response to receiving a beacon packet from the second device on the first device; andcommunicating a ...

REDUCING INTERNAL FABRIC CONGESTION IN LEAF-SPINE SWITCH FABRIC

Embodiments of the present invention provide methods and system to reduce needless data traffic in leaf-spine switch fabric. In embodiments, in a static solution, data rates of data flows having a common destination port may be measured and responsive to the data flows having a combined data rate that exceeding a rate limit of the common destination port, one or more of the data flows may be limited. Embodiments may also comprise a global scheduler to provide dynamic data rate controls of traffic flows from source ports to destination ports in which to reduce the handling of data traffic that would otherwise be discarded due to oversubscription.

METHOD AND COMMUNICATION SYSTEM FOR CONSTRUCTING CLUSTER-TYPE NETWORK

A method for constructing a cluster-type network with a plurality of communication devices contains a step for transmitting signals containing state information relating to states of the plurality of communication devices among the plurality of communication devices and a step for constructing the cluster-type network so that one of the plurality of communication devices is set as the master unit according to a predetermined master-slave determination condition based on the state information of each of the plurality of communication devices contained in the signals. 1. A method for constructing a cluster-type network with a plurality of communication devices , comprising:transmitting signals containing state information related to states of the plurality of communication devices among the plurality of communication devices; andconstructing the cluster-type network so that one of the plurality of communication devices is set as a master unit according to a predetermined master-slave determination condition and based on the state information of each of the plurality of communication devices contained in the signals.2. The method as claimed in claim 1 , wherein each of the plurality of communication devices is driven by electric power supplied from a battery included in each of the plurality of communication devices claim 1 ,wherein the state information of each of the plurality of communication devices contains a remaining capacity of the battery of each of the plurality of communication devices, andwherein the master-slave determination condition is a condition related to the battery of each of the plurality of communication devices.3. The method as claimed in claim 2 , wherein constructing the cluster-type network contains constructing the cluster-type network so that one communication device having a largest remaining capacity of the battery among the plurality of communication devices is set as the master unit.4. The method as claimed in claim 1 , wherein the ...

SYSTEM AND METHOD FOR SUPPORTING INTER-SUBNET CONTROL PLANE PROTOCOL FOR CONSISTENT MULTICAST MEMBERSHIP AND CONNECTIVITY IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT

Systems and methods for supporting inter subnet control plane protocol for consistent multicast membership and connectivity across multiple subnets in a high performance computing environment. In accordance with an embodiment, by associating a multicast group with an inter-subnet partition, and enforcing a dedicated router port for the multicast group, multicast loop avoidance can be provided for between connected subnets. Because only a single router port is selected as being capable of handling the MC packet, no other router port in the subnet can then pass a multicast packet back to the originating subnet. 1. A system for supporting multicast forwarding across multiple subnets in a high performance computing environment , comprising:one or more microprocessors; a plurality of switches,', 'a plurality of end nodes,', 'a subnet manager, and', 'an inter-subnet manager;, 'a first subnet, the first subnet comprising'}wherein a switch port of a first switch of the plurality of switches is configured as a first router port;wherein a switch port of a second switch of the plurality of switches is configured as a second router port;wherein the first subnet is interconnected with a second subnet via the first router port and the second router port;wherein a multicast group is defined within the first subnet;wherein the inter-subnet manager configures the first router port to be a full member of the multicast group;wherein a multicast packet is received at the first router port from the second subnet, the received multicast packet belonging to the multicast group; andwherein, based upon the configuring the first router port as a full member of the multicast group, the multicast packet is prevented from being transmitted to the second subnet once received at the first router port.2. The system of claim 1 , wherein the plurality of end nodes comprises a virtual machine claim 1 , the first subnet further comprising:a host channel adapters, wherein the host channel adapter ...

PEER AND OPERATING METHOD THEREOF

A peer may receive a peer list from a hybrid overlay management server in response to an overlay network participation request of the peer, may select a first peer from the received peer list, may establish a connection with the selected first peer, and may establish a connection with at least one of second peers. Propagation of the overlay network participation request may be initiated by the selected first peer, and each of the second peers may correspond to a peer that receives the propagated overlay network participation request. One of the established connections may be determined as a primary path, and a communication may be performed through the primary path. 1. An operating method of a peer , comprising:receiving a peer list from a hybrid overlay management server in response to an overlay network participation request of the peer;selecting a first peer from the received peer list;establishing a connection with the selected first peer;establishing a connection with at least one of second peers, propagation of the overlay network participation request being initiated by the selected first peer, and each of the second peers corresponding to a peer that receives the propagated overlay network participation request;determining one of the established connections as a primary path; andperforming a communication through the primary path.2. The operating method of claim 1 , wherein:the peer list comprises peers determined based on a ticket identification (ID) assigned to each of peers remaining in an overlay network, andthe ticket ID corresponds to an order in which each peer participates in the overlay network.3. The operating method of claim 1 , wherein the establishing of the connection with the selected first peer comprises:transmitting a first request message to the selected first peer to provide a notification of participation in an overlay network; andreceiving a success response to the first request message from the selected first peer, and receiving a ...

DETERMINING NETWORK RANK FOR COMMUNICATION TO NEIGHBORING NODES

The determination and advertisement of a node's rank in an RF mesh network reflects sustained network changes. A node's advertised rank may be based on the node's induced rank and a previous rank candidate. Induced rank is the rank of the node at a particular point in time. Rank candidate is based on a running average of the node's past rank. The advertised rank may be based on a weighted sum of the induced rank and a previous rank candidate. Induced rank may consider a Link Quality Indicator (LQI), which may be based on a running average LQI. 1. A method for communicating an advertised rank of a node in a mesh network , comprising:receiving an advertised rank of a parent node of the node;determining an induced rank of the node, wherein the induced rank is based on the advertised rank of the parent node and a Link Quality Indicator (LQI) adjustment for a link between the node and the parent node;determining a rank candidate for the node based on the induced rank and a previous rank candidate for the node, wherein the previous rank candidate was determined in connection with a previous advertised rank of the node;comparing the rank candidate and a neighboring rank, wherein the neighboring rank is an adjacent rank value to the previous advertised rank of the node;when the rank candidate is within a rank threshold of the neighboring rank, then determining that the advertised rank is the neighboring rank;when the rank candidate is outside the rank threshold of the neighboring rank, then determining that the advertised rank is the previous advertised rank; andcommunicating the advertised rank to other nodes in the mesh network.2. The method of claim 1 , wherein the LQI adjustment is equal to at least one rank value claim 1 , and determining an induced rank comprises summing the advertised rank of the parent node claim 1 , the at least one rank value for the LQI adjustment claim 1 , and one rank value.3. The method of claim 1 , wherein the LQI for the link between the ...

MODULAR SIGN SYSTEM WITH A WIRELESS BACKPLANE AND RELATED METHODS

Embodiments of a modular sign system with a wireless backplane and related methods are generally described herein. Many embodiments include a sign system. In some embodiments, the sign system can comprise a plurality of units, a wireless communication system configured to transfer information between the plurality of units, and a control device configured to transmit information to at least one unit of the plurality of units. In many embodiments, each unit of the plurality of units comprises a display of a plurality displays, a controller of a plurality of controllers, and a transceiver of a plurality of transceivers. Other embodiments may be described and claimed. 1. A sign system , comprising: a display of a plurality of displays;', 'a controller of a plurality of controllers; and', 'a transceiver of a plurality of transceivers;, 'a plurality of units, wherein each unit of the plurality of units comprisesa wireless communication system configured to transfer information between the plurality of units; anda control device configured to transmit information to at least one unit of the plurality of units.2. The sign system of claim 1 , wherein:the at least one unit of the plurality of units is a master unit.3. The sign system of claim 2 , wherein:only the master unit communicates with the control device.4. The sign system of claim 1 , further comprising:a structure configured to hold at least a subset of the plurality of units together; the at least the subset of the plurality of units form a single sign; and', 'the at least the subset of the plurality of units are connected to each other through a wireless network of the wireless communication center., 'wherein5. The sign system of claim 1 , further comprising:a peer-to-peer communication network comprising at least a portion of the plurality of transceivers.6. The sign system of claim 1 , further comprising:a star topology communication network comprising at least a portion of the plurality of transceivers.7. The ...

COMMUNICATION SYSTEM, SUBSCRIBER LINE TERMINAL APPARATUS AND COMMUNICATION METHOD

A communication system includes a first processor that performs processing for transmitting a signal to and receiving a signal from a communication destination device and a second processor that performs processing of an additional function. The second processor includes a decoding unit that decodes a transmission signal encoded by the first processor or a reception signal encoded by the communication destination device, an information acquiring unit that acquires information from the transmission signal or the reception signal decoded by the decoding unit, an additional function executing unit that performs the processing of the additional function using the information acquired by the information acquiring unit, and an encoding unit that performs processing for encoding the decoded transmission signal and outputting a resulting signal to the communication destination device or processing for encoding the decoded reception signal and outputting a resulting signal to the first processor. 1. A communication system comprising: a first processor configured to perform processing for transmitting a signal to and receiving a signal from a communication destination device; and a second processor configured to perform processing of an additional function , wherein the second processor includes: a decoding unit that decodes a transmission signal encoded by the first processor or a reception signal encoded by the communication destination device; an information acquiring unit that acquires information from the transmission signal or the reception signal decoded by the decoding unit; an additional function executing unit that performs the processing of the additional function using the information acquired by the information acquiring unit; and an encoding unit that performs processing for encoding the decoded transmission signal and outputting a resulting signal to the communication destination device or processing for encoding the decoded reception signal and outputting a ...

DISTRIBUTED ASSIGNMENT OF VIDEO ANALYTICS TASKS IN CLOUD COMPUTING ENVIRONMENTS TO REDUCE BANDWIDTH UTILIZATION

Example task assignment methods disclosed herein for video analytics processing in a cloud computing environment include determining a graph, such as a directed acyclic graph, including nodes and edges to represent a plurality of video sources, a cloud computing platform, and a plurality of intermediate network devices in the cloud computing environment. Disclosed example task assignment methods also include specifying task orderings for respective sequences of video analytics processing tasks to be executed in the cloud computing environment on respective video source data generated by respective ones of the video sources. Disclosed example task assignment methods further include assigning, based on the graph and the task orderings, combinations of the video sources, the intermediate network devices and the cloud computing platform to execute the respective sequences of video analytics processing tasks to reduce an overall bandwidth utilized by the sequences of video analytics processing tasks in the cloud computing environment. 120-. (canceled)2124-. (canceled)25. At least one non-transitory computer readable medium comprising computer readable instructions that , when executed , cause at least one processor to at least:access respective characteristics of a plurality of video analytics applications to be executed in a compute environment including a plurality of compute devices, ones of the video analytics applications associated with respective sequences of video analytics tasks, ones of the sequences of video analytics tasks to process respective input video frames to produce outputs associated with corresponding ones of the video analytics applications;assign execution of the respective sequences of video analytics tasks across the plurality of compute devices in the compute environment based on (i) the respective characteristics of the plurality of video analytics applications, (ii) respective capacities of the plurality of compute devices, and (iii) a ...

System and method for supporting scalable bit map based p_key table in a high performance computing environment

System and method for supporting scalable bitmap based P_Key table in a high performance computing environment. A method can provide, at least one subnet comprising one or more switches, a plurality of host channel adapters, and a plurality of end nodes. The method can associate the plurality of end nodes with at least one of a plurality of partitions, wherein each of the plurality of partitions are associated with a P_Key value. The method can associate each of the one or more switches with a bitmap based P_Key table of a plurality of bitmap based P_Key tables. The method can associate each of the host channel adapters with a bitmap based P_Key table of the plurality of bitmap based P_Key tables.

MODULAR SYSTEM (SWITCH BOARDS AND MID-PLANE) FOR SUPPORTING 50G OR 100G ETHERNET SPEEDS OF FPGA+SSD

A chassis front-end is disclosed. The chassis front-end may include a switchboard including an Ethernet switch, a Baseboard Management Controller, and a mid-plane connector. The chassis front-end may also include a mid-plane including at least one storage device connector and a speed logic to inform at least one storage device of an Ethernet speed of the chassis front-end. The Ethernet speeds may vary. 1. A chassis front-end , comprising:a switchboard including an Ethernet switch, a processor, a Baseboard Management Controller (BMC), and a mid-plane connector to connect to a mid-plane; anda mid-plane including at least one storage device connector to connect to at least one storage device and a speed logic to inform the at least one storage device of an Ethernet speed of a chassis,wherein the chassis supports a first Ethernet speed and a second Ethernet speed.2. The chassis front-end according to claim 1 , wherein the at least one storage device includes at least one Solid State Drive (SSD).3. The chassis front-end according to claim 2 , wherein the speed logic includes a Complex Programmable Logic Device (CPLD) that communicates with the at least one SSD using the at least one storage device connector.4. The chassis front-end according to claim 3 , wherein the CPLD uses at least one speed pin on the at least-one storage device connector to inform the at least one SSD of the speed of the chassis.5. The chassis front-end according to claim 3 , wherein the CPLD uses at least one General Purpose Input/Output (GPIO) pin on the at least-one storage device connector to inform the at least one SSD of the speed of the chassis claim 3 , the at least one GPIO pin latched after informing the at least one SSD of the speed of the chassis.6. The chassis front-end according to claim 2 , wherein:the speed of the chassis may be written into a Vital Product Data (VPD) of an Electrically Erasable Programmable Read-Only Memory (EEPROM); andthe at least one SSD may read the speed of the ...

METHOD TO IMPROVE AVAILABILITY OF REAL-TIME COMPUTER NETWORKS

A method for transmitting real-time messages in a computer network (), in particular real-time computer network, wherein said network comprises two or more computing nodes () and one or more star couplers (), wherein said nodes are interconnected via at least one star coupler, wherein each node is connected to at least one star coupler via at least one of the communication links (), and wherein the nodes exchange messages (M M) with one another and with the at least one star coupler, and wherein star couplers, which are synchronized to a global time base (C), transmit a first non-empty set (SSET) of real-time messages according to a synchronized communication paradigm, and/or wherein computing nodes, which are synchronized to the global time base, transmit said first non-empty set of real-time messages according to the synchronized communication paradigm, wherein a star coupler, which is not synchronized to a global time base, and/or a computing node, which is not synchronized to a global time base, transmits a second non-empty subset (CSET) of said first non-empty subset of real-time messages according to an unsynchronized communication paradigm and stops the transmission of said second non-empty subset of real-time messages according to the synchronized communication paradigm. 2. The method according to claim 1 , wherein real-time messages are characterized by message types (T) claim 1 , wherein said message types are uniquely identified by unique identifiers claim 1 , preferably with a unique combination of bits in the header of said real-time message.3121220. The method according to claim 2 , wherein a star coupler changes the type (T claim 2 , T) of a received message (M claim 2 , M) belonging to said second subset (CSET) of messages to a predefined message types (T) claim 2 , before transmitting said real-time messages claim 2 , according to a predefined mapping claim 2 , if said at least one star coupler is not synchronized to a global time base (C). ...

METHOD AND SYSTEM FOR SHARING CONTENT

The present disclosure relates to methods and systems for sharing content, the method comprising receiving at a creator node, a selection of a first set comprising a plurality of joinee nodes, wherein each of said plurality of joinee nodes are associated with a corresponding unique identifier. The process further includes encoding the identifier associated with each of the plurality of joinee nodes in the selected first set and then transmitting the encoded identifiers to at least each of the plurality of joinee nodes in the first set. Next, the process includes receiving an acknowledgement from a subset of the first set, said subset comprising at least two joinee nodes, wherein said acknowledgement indicates a successful connection between the creator node and at least two joinee nodes in the subset. Subsequently, the method creates a network comprising the creator node and said subset and content is shared from the creator node to the subset via the created network. 1. A method for sharing content , the method comprising:receiving a selection of a first set, at a creator node, said first set comprising a plurality of joinee nodes, wherein each of said plurality of joinee nodes are associated with a corresponding unique identifier;encoding the identifier associated with each of the plurality of joinee nodes in the selected first set;transmitting the encoded identifiers to each of the plurality of joinee nodes in the first set; 'said acknowledgement indicates a successful connection between the creator node and at least two joinee nodes in the subset;', 'receiving an acknowledgement from a subset of the first set, said subset comprising at least two joinee nodes, wherein'}creating a network, based on said acknowledgement, said network comprising the creator node and said subset; andsharing the content from the creator node to the subset via the created network.2. The method of claim 1 , further comprising creating an ad-hoc network comprising the creator node and ...

METHOD FOR MANAGING TREE STRUCTURE, INFORMATION PROCESSING SYSTEM, AND MEDIUM

In the tree structure, a migrating node forms a connection with a parent node of a migration destination, the migrating node transmits a migration request to a root node, and the root node distributes a reply to the migration request according to the tree structure, upon receiving the reply, the parent node of the migration destination transmits a message, which is received later than the reply, to the migrating node via the formed connection, the migrating node stores in a queue messages which are received later than the reply received via the formed connection, upon receiving a reply distributed according to the tree structure, the migrating node reconstructs the distributed message, based on a message which is received earlier than the reply received from the parent node before migration and a message which is received later than the reply stored in the queue. 1. A method for managing a tree structure associated with migration of positions of nodes on the tree structure in an information processing system in which a plurality of information processing devices are connected in the tree structure as nodes and a message is distributed according to the tree structure ,the method comprising:causing a migrating node to form a connection with a parent node of a migration destination, which serves as a parent node of the migrating node after the migration;causing the migrating node to transmit a migration request to a root node in the tree structure;causing the root node to distribute a reply to the migration request according to the tree structure;causing the parent node of the migration destination, upon receiving the reply, to transmit a message, which is received later than the reply, to the migrating node via the formed connection;causing the migrating node to store in a queue the message received from the parent node of the migration destination via the formed connection;causing the migrating node, upon receiving the reply distributed according to the tree ...

COMMUNICATION APPARATUS AND COMMUNICATION METHOD

A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a sorting unit configured to acquire a signal that is transmitted by a first component and transmit the signal to a second component indicated by destination information that is added to the signal by the first component. 1. A communication device in a communication system in which functions that are converted to software are configured as a plurality of components , and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network , the communication device comprisinga processor; anda storage medium having computer program instructions stored thereon,when executed by the processor, perform to:acquire a signal that is transmitted by a first component and transmit the signal to a second component indicated by destination information that is added to the signal by the first component.2. The communication device according to claim 1 , further comprising communication ports that are respectively associated with the plurality of components claim 1 , wherein the computer program instructions further perform to transmit the signal via a communication port that is associated with the second component.3. The communication device according to claim 2 , wherein the computer program instructions further perform to transmit the signal based on a management table in which the components and the communication ports are associated with each other.4. A communication method to be executed with a communication system in which functions that are converted to software are configured as a plurality of components claim 2 , and the functions are realized as a ...

Optical signal repeater, optical communication system, and method of switching port in optical signal repeater

An optical signal repeater includes a plurality of ports, each configured to be connectable to both of a first optical transceiver for transmitting and receiving an optical signal to and from the optical line terminal and a second optical transceiver for transmitting and receiving an optical signal to and from the optical network unit. The optical signal repeater further includes a port switching control unit which switches each of the plurality of ports between a first port adapted to the first optical transceiver and a second port adapted to the second optical transceiver and a path switching unit configured to switch a transmission path between the plurality of ports. The path switching unit includes an aggregation unit configured to aggregate the transmission paths from the second ports. The optical signal repeater further includes a path switching control unit configured to control the path switching unit.

LEAF-TO-SPINE UPLINK BANDWIDTH ADVERTISEMENT TO LEAF-CONNECTED SERVERS

A system includes spine network switching devices, leaf network switching devices, and server computing devices. The leaf network switching devices are not connected to one another. Each leaf network switching device is connected to each spine network switching device. Each server computing device is connected to each leaf network switching device. Each leaf network switching device transmits an advertisement indicating uplink bandwidth to each spine network device. Each server computing device distributes network traffic through the leaf network switching devices to the spine network switching devices based on the uplink bandwidth that the leaf network switching devices advertise. 1. A method comprising:receiving, by a server computing device from each leaf network switching device of a plurality of leaf network switching devices to which the server computing device is physically connected, an advertisement indicating uplink bandwidth of the leaf network switching device to each spine network switching device of a plurality of spine network switching devices to which the leaf network switching device is connected; anddistributing, by the server computing device, network traffic through the leaf network switching devices to the spine network switching devices based on the uplink bandwidth of each leaf network switching device to each spine network switching device.2. The method of claim 1 , wherein the leaf network switching devices are not physically connected to one another.3. The method of claim 1 , further comprising:detecting, by the server computing device, local bandwidth between the server computing device and each leaf network switching device,wherein the server computing device distributes the network traffic through the leaf network switching devices to the spine network switching devices further based on the local bandwidth between the server computing device and each leaf network switching device.4. The method of claim 3 , wherein the server computing ...

SYSTEMS FOR ALLOWING ANNOTATION IN REAL TIME

Synchronous content sharing of media assets via an object data model propagated through a star network or a mesh network. Each user device updates a local object data model including information on the status of the media asset delivery, to achieve synchronization with the source data. Updates to the local object data model may be the result of direct connection between a user device and an application server via a network, or the result of indirect connections through peers in mesh networks, where the local object data model is shared through hops between peers in the mesh network if the direct connection is unavailable. 1. A method for synchronous content sharing , including:storing in a computing device an object data model representative of a state of a presentation;updating in the computing device the object data model in response to a change in the state of the presentation;through a network connection, sending update information from the computing device to an API server;receiving, at a user device, updates to a local object data model stored at the user device;requesting a star network connection between the user device and the API server;updating the local object data model by periodically pushing updates to the local object data model from the API server to the user device;requesting a mesh network connection between the user device and at least one other user device;when the star network connection fails, updating the local object data model by periodically pushing updates to the local object data model from the at least one other user device in the mesh network,wherein content in the computing device is synchronously shared with the user device.2. The method of claim 1 , wherein the object data model includes at least an identification field to identify a media which is being synchronized claim 1 , and an active media element field to identify the element currently displayed by the computing device.3. The method of claim 1 , wherein a star network ...

IN-BAND TELEMETRY CONGESTION CONTROL SYSTEM

An in-band telemetry congestion notification system includes a source device that generates and transmits packets. Each of a plurality of switch devices receives each of the packets, provides in-band telemetry information in each of the packets, and transmits each of the packets to a destination device. When the destination device receives a first subset of the packets, it uses the in-band telemetry information included in each of the first subset of the packets to determine a telemetry information baseline. Subsequent to determining the telemetry information baseline, when the destination device receives a second subset of the packet, it uses the in-band telemetry information included in each of the second subset of the packets to determine a departure from the telemetry information baseline that indicates congestion and, in response, generates a congestion notification and transmits the congestion notification via the plurality of switch devices to the source device. 1. An in-band telemetry congestion notification system , comprising:a source device that is configured to generate and transmit a plurality of packets; receive each of the plurality of packets transmitted by the source device;', 'provide in-band telemetry information in each of the plurality of packets; and', 'transmit each of the plurality of packets; and', 'a destination device that is coupled to the plurality of switch devices and configured to:', 'receive a first subset of the plurality of packets;', 'determine, using the in-band telemetry information included in each of the first subset of the plurality of packets, a telemetry information baseline;', 'receive, subsequent to determining the telemetry information baseline, a second subset of the plurality of packet;', 'determine, using the in-band telemetry information included in each of the second subset of the plurality of packets, a departure from the telemetry information baseline that indicates congestion and, in response, generate a ...

Proactive monitoring tree with state distribution ring

A system that displays performance data for a computing environment. During operation, the system determines performance states for a plurality of entities that comprise the computing environment based on values of a performance metric for the entities. Next, the system displays the computing environment as a tree comprising nodes representing the plurality of entities and edges representing parent-child relationships between the plurality of entities. Then, for each parent node in the tree, the system determines counts of one or more performance states for descendants of the parent node in the tree. Finally, the system displays a graphical representation of the determined counts while displaying the parent node. In some embodiments, displaying the graphical representation of the determined counts includes displaying a circular ring comprising visually distinct sections associated with different performance states, wherein the visually distinct sections are sized proportionately with the determined counts for the associated performance states.

Roaming in a wireless mesh network

Introduced here are techniques to provide automated mesh point survey and guided installation for assisting the installation and configuration of a wireless mesh network. Additional implementation techniques are also introduced including, for example, link rate estimation, roaming, and dedicated backhaul link implementation in such wireless mesh network, are also discussed. Among other benefits, this disclosure provides an integral solution where multiple wireless local area network (WLAN) mesh point devices are deployed in a relatively large environment with potential dead spots, such as a home or an office.

DEDICATED BACKHAUL FOR WHOLE HOME COVERAGE

A dedicated backhaul for whole home coverage variously applies optimization techniques, e.g. using the 5 GHz high band or low band as a dedicated backhaul; using the 2.4 GHz band as backup if the 5 GHz band fails to reach between nodes; using Ethernet when it is better than the 5 GHz and 2.4 GHz bands and it is available; and using a spanning tree protocol or a variant to avoid loops. The dedicated backhaul is used if the received signal strength indication (RSSI) of the dedicated channel is above a threshold. In embodiments, a daisy chain uses probe request contents to communicate hop count and link quality between the nodes by attempting to route directly if link quality is better than a defined threshold. For each extra hop, there must be some percentage gain over smaller hops. If the link is below some threshold, it is not used. 1. A method , comprising:using a 5 GHz band as a dedicated backhaul between two or more nodes in a network when the received signal strength indication (RSSI) of the dedicated channel is above a predefined threshold; andusing a different radio, channel, or band as backup if the 5 GHz band fails to reach between nodes.2. The method of claim 1 , further comprising:using a 2.4 GHz band as backup if the 5 GHz band fails to reach between nodes.3. The method of claim 1 , further comprising:using Ethernet when it is better than the 5 GHz and 2.4 GHz bands and it is available.4. The method of claim 1 , further comprising:using a spanning tree protocol or a variant thereof to avoid loops.5. The method of claim 1 , further comprising:a plurality of nodes arranged in a daisy chain using probe request contents to communicate hop count and link quality between the nodes by attempting to route directly if link quality is better than a predefined threshold;wherein for each extra hop, there must be some percentage gain over smaller hops; andwherein the link is not used when it is below said predefined threshold.6. The method of claim 1 , further ...

OPTICAL LINE TERMINAL AND BANDWIDTH ALLOCATION METHOD

An optical line terminal is provided with: an absorption unit that acquires first information of a type and a format that are dependent on a communication scheme and that converts the acquired first information into second information of a type and a format that are common to mutually different communication schemes; and a bandwidth allocation unit that determines bandwidth allocation of an upstream signal allocated to an optical network unit on the basis of the second information. 1. An optical line terminal comprising:a processor; anda storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by the processor, perform toacquire first information of a type and a format that are dependent on a communication scheme,covert the acquired first information into second information of a type and a format that are common to mutually different communication schemes, anddetermine bandwidth allocation of an upstream signal allocated to an optical network unit on the basis of the second information.2. The optical line terminal according to claim 1 , wherein the computer program instructions further perform to output the second information for use in determining the bandwidth allocation and output information representing the bandwidth allocation of the upstream signal allocated to the optical network unit for use in converting the first information into the second information.3. The optical line terminal according to claim 1 , wherein the first information is information in accordance with a message by which the optical network unit demands permission to transmit the upstream signal.4. The optical line terminal according to claim 1 , wherein the computer program instructions further perform to allocate bandwidth to the upstream signal on the basis of a determined bandwidth amount.5. The optical line terminal according to claim 1 , wherein the computer program instructions further perform to allocate bandwidth to ...

BORDER LEAF TRAFFIC CONVERGENCE IN A SOFTWARE DEFINED NETWORK

A border leaf of a software defined computer network receives network traffic directed to a first endpoint from a second endpoint. The first endpoint is connected to the software defined network, and the second endpoint is external to the software defined network. If the border leaf determines that it does not have a stored network route for an active conversation between the first endpoint and the second endpoint, the border leaf determines a valid network route for the network traffic to reach the first endpoint. The border leaf stores the valid network route and forwards the network traffic to the first endpoint. The border leaf transmits a synchronization message to other border leaf nodes of the computer network. The synchronization message causes the other border leaf(s) to store the valid network route and an indication that the original border leaf is forwarding the network traffic in the active conversation. 1. A method comprising:at a first network gateway element of a first computer network, receiving, from a second endpoint device external to the first computer network, network traffic directed to a first endpoint device connected to the first computer network;in response to a determination that the first network gateway element does not have a stored network route on the first computer network for the network traffic in an active conversation between the first endpoint device and the second endpoint device, determining a valid network route on the first computer network for the network traffic in the active conversation between the first endpoint device and the second endpoint device so that the network traffic reaches the first endpoint device;storing the valid network route on the first network gateway element;forwarding the network traffic to the first endpoint device according to the valid network route; andtransmitting a synchronization message to one or more second network gateway elements of the first computer network, wherein the synchronization ...

SYSTEMS AND METHODS TO MANAGE MULTICAST TRAFFIC

In various example embodiments, a system, a method, and a machine readable medium to manage multicast traffic are disclosed. The system includes a controller server for receiving first multicast group member information and for providing centralized control of a network. The first multicast group member information is received from a first end-host computer and received at the controller server responsive to a first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual network. The controller server generates a first multicast tree and communicates a first network configuration message to at least one packet forwarding system of the first plurality of packet forwarding systems. The first network configuration message includes a packet flow table entry enabling configuration of a flow table to enable communication of multicast traffic for the first multicast group over a portion of the first multicast tree. 1. A system comprising:at least one processor and executable instructions accessible on a computer-readable medium that, when executed, cause the at least one processor to perform operations comprising:receiving, over a network and at a controller server, first multicast group member information, the receiving being from a first end-host computer and via a first packet forwarding system, the controller server providing for central control of the network comprising a first virtual local area network comprised of a first plurality of packet forwarding systems including the first packet forwarding system, the receiving, at the controller server, including the first packet forwarding system receiving the first multicast group member information from the first end-host computer and transmitting the first multicast group member information to the controller server responsive to the first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual ...

SWITCH DEVICE, COMMUNICATION CONTROL METHOD, AND RECORDING MEDIUM

A switch device is a switch device that relays data in an in-vehicle network and including a plurality of first communication ports which are connectable to a plurality of functional units in a vehicle, and includes a plurality of first communication circuits disposed corresponding to the first communication ports and capable of communicating with the functional units via the corresponding first communication ports, one or more second communication circuits different from the plurality of first communication circuits, a switching unit capable of switching a connection destination of each of the first communication ports between the corresponding first communication circuit and the second communication circuit, and a control unit that controls the switching unit such that a connection destination of a target port which is the first communication port serving as a target is switched to the second communication circuit when a predetermined condition is satisfied. 18.-. (canceled)9. A switch device that relays data in an in-vehicle network and including a plurality of first communication ports which are connectable to a plurality of functional units in a vehicle , comprising:a plurality of first communication circuits disposed corresponding to the first communication ports and capable of communicating with the functional units via the corresponding first communication ports;one or more second communication circuits different from the plurality of first communication circuits;a switching unit capable of switching a connection destination of each of the first communication ports between the corresponding first communication circuit and the second communication circuit; anda control unit that controls the switching unit such that a connection destination of a target port which is the first communication port serving as a target is switched to the second communication circuit when a predetermined condition is satisfied.10. The switch device according to claim 9 , wherein ...