Patent ID: 8988989
Filing Date: 2015-03-24
Classification: G06F,H04L

Abstract:
1. A communication node comprising a transmission equipment which communicates user data with a transmission equipment of an adjacent node, and a controller which communicates a message with a controller of the adjacent node and which manages the transmission equipment of its own node, wherein: a controller of the node detects existence or nonexistence of a fault of a controller of the adjacent node on the basis of situation of receiving a message sent from the controller of the adjacent node; when the controller of the node detects the fault of the controller of the adjacent node, the controller of the node issues a state reference notice to a transmission equipment of its own node, acquires a state of an interface of the transmission equipment of its own node by receiving a state report notice to the state reference notice, and checks existence or nonexistence of fault alert detection which is included in the acquired state of the interface of the transmission equipment of its own node; and in a case where the fault alert detection of the transmission equipment of the node does not exist, the controller of the node maintains a path state of the node.