| 摘要 |
In a label switching router and a path switchover method thereof when a path fault occurs, a relay label switching router registers a hop destination indicated in a received message in a path hop list, forwards the message to a next hop destination without deleting the hop destination, and notifies an identifier of a path in which a fault has recovered to an ingress label switching router based on the path hop list, an egress label switching router registers the hop destination indicated in the received message in a path hop list, and notifies an identifier of a path in which a fault has recovered to the ingress label switching router based on the path hop list, and the ingress label switching router regards, when detecting a recovery of a path higher in priority than an active path or when receiving a recovery notification, the recovered path as an active path.
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