​KembaraXtra-Computer Terms – beacon:


In networking, a beacon is a special type of frame transmitted within certain network systems to signal a problem or abnormal condition detected by a network node. For example, in Fiber Distributed Data Interface networks, a node may generate a beacon frame when it detects a failure or disruption in the network communication path.


The beacon frame is passed along the network to notify other nodes about the detected problem. This signaling mechanism helps the network identify faults and initiate recovery procedures so that communication within the network can be restored or rerouted.