PROTECTION METHOD AND SYSTEM FOR MULTI-DOMAIN NETWORK, AND NODE

摘要

In the field of network communications, a protection method for a multi-domain network includes: after a second node detects that a first link fails, disconnecting a first protection path on the node, connecting a first sub-path and a path that is within a second domain, uses the second node as an endpoint, and is used to bear a service; sending, on the first sub-path, a first failure monitoring message that carries first maintenance information to a third node, where the first maintenance information is the same as second maintenance information carried in a second failure monitoring message; the second failure monitoring message is a message that is sent on the first protection path by a first node to the third node and is used to monitor a failure of the first protection path.

主权项

1. A protection method for a multi-domain network, wherein the multi-domain network comprises a first domain and a second domain, wherein the first domain and the second domain intersect at a first node and a second node; and the method comprises:
after the second node detects that a first link fails, disconnecting a first protection path on the node, and connecting a first sub-path and a path that is within the second domain, uses the second node as an endpoint, and is used to bear a service; and sending, on the first sub-path, a first failure monitoring message that carries first maintenance information to a third node, wherein: the first maintenance information is the same as second maintenance information carried in a second failure monitoring message; the second failure monitoring message is sent on the first protection path by the first node to the third node and is used to monitor a failure of the first protection path; the first link is a link between the first node and the second node; the service is a service that passes through the first domain and the second domain; the first protection path is formed by splicing the first sub-path and a second sub-path and is a protection path of a first working path; the first working path is a working path of the service between the first node and the third node within the first domain; the first sub-path is a path between the second node and the third node; and the second sub-path is a path that passes through the first link and is between the first node and the second node.