Successive connection metrics for monitoring and controlling wireless or wired networks

Embodiments of the present disclosure relate to successful connection metrics for monitoring and controlling wireless or wired networks. A network management system (NMS) initiates, for each of a plurality of wireless and/or wired client devices, a wireless/wired state machine configured to continuously monitor at least one pre-connection state and at least one post-connection state of a corresponding wireless/wired connection session, and determining one or more network connection evaluations for the plurality of wireless/wired client devices based on the success or failure of the pre-connection state and/or the post-connection state. The NMS may also output a notification that includes an identification of the root cause (s) of any network connection failure and/or automatically invoke a remedial action that aims to resolve or mitigate the root cause (s) of network connection failure.