Patent ID: 7978596
Filing Date: 2011-07-12
Classification: H04L

Abstract:
1. A connection-oriented network node being designated as an originating node of a protection path serving as a bypath of a protection segment included in a working path in a network system in which data is transferred via a path previously established between nodes, the network node comprising: a memory configured: to be stored with such information that a protection path is associated with the working path having a protection segment to be protected by this protection path; and a processor configured: the processor generating a signaling message containing a usage bandwidth of the setup target protection path and the protection segment protected by the setup target protection path in order for each of relay nodes on the setup target protection path that receives the signaling message for the setup target protection path to judge whether or not the usage bandwidth of the protection path in the interface of the relay node itself, which corresponds to the setup target protection path, exceeds a usable bandwidth for the protection path that is being preset to the interface by the setup of the setup target protection path.