| 摘要 |
<p>PURPOSE:To prevent the band of a transmission line from being wasteful by releasing the paths left for a repeating because the path release message at the time of a path detour does not reach a repeating node. CONSTITUTION:When a path not terminated in a self-node and bypass-connected to other transmission line exists when a fault is generated in a connected transmission line and in the path 1 connected with this transmission line in each node, the detour instruction (a) of this path 1 is transmitted to nodes A and E terminating this path. In the nodes A and E receiving this detour instruction (a), the detour of this path is performed and a release instruction (b) instructing the release of the path to the node transmitting this detour instruction is transmitted. In a node C receiving this release instruction (b), the reelase of the path for which the release is instructed by this release instruction is performed.</p> |
