A Restoration Strategy on the Multi-Link Failures in BSHR/2

초록

When one link failure happens in BSHR/2 networks, it is possible to restore all traffics by following the ITU-T G.841 rules. When a node that is currently executing a ring switch receives a long-path ring bridge request for an equal or higher priority, it shall drop its bridge and switch immediately, then enter the full pass-through. Even though connected links between two nodes exist, it is impossible to restore the services. In this paper, when multi-link failures happen, the services through the connected links can be restored by the exchanging messages through DCC(Data Communication Channel). And partially reconstructing the ring map that is unable to restore the services because of the multi-Link failures made it possible to restore these kinds of traffic patterns. This paper shows that the services through the connected links can be restored by the proposed method.