| 摘要 |
In this communication system, which is provided with at least two ring networks in which nodes are connected in a ring shape, executes ERP in each ring network, causes one of the ring networks to be a major ring that detects a failure in a shared link, and causes the other ring network to be a subring, a shared node that terminates the shared link is provided with: a failure monitoring unit (311) that detects failure of the shared link and detects failure in the at least two ring networks that share the shared link; a switching processing unit (312) that determines the ring network to be the major ring on the basis of the failure detection results; and an ERP processing unit (22-1, 22-2) that, when switching has been performed by the switching processing unit (312), stores post-switching identification information in an R-APS frame and transmits or forwards the frame. |
