Line Plan Multiple Selector Multi-Layer Recovery Method in Mesh Structure Network Using Circuit Distribution System

摘要

The present invention relates to a multi-layer recovery method for recovering a network failure by using a circuit distribution system (DCS) in a synchronous network. In the prior art, a line plan line recovery is performed. Although line plan path recovery is performed or dynamic path recovery is performed in a third manner, in the present invention, a line plan multi-selector recovery step is added to the line plan line recovery step and the dynamic path recovery step. If the recovery is not completed in the aftermath of another line failure while the recovery message is propagated to recover the failure, the sender recognizes the failure of the multi-line by sending a failure detection response message containing the failure to recover. Select the nodes connected by the failed node with the multi-selector. To a network failure and recovery through the other of the track, and the recovery for the untested channels by carrying out a recovery step wherein the dynamic path have a fast recovery time and a high recovery rate with respect to the multi-line and the node failure.