| 摘要 |
The present invention relates to the field of network communications. Disclosed specifically is a method for establishing a recovery path, comprising: a first node acquires a working forward common node collection of the recovery path on the basis of routing information of a working path and of the recovery path of a service; the first node determines if self is a working forward common node on the basis of the working forward common node collection, and assigns a first tag and a first interface; the first node transmits an establishment request message to an adjacent downstream node, where the establishment request message comprises at least the first tag, the first interface, the routing information of the recovery path, and working forward common node information; the first node receives an establish response message of the recovery path, where the establish response message comprises at least a fourth tag, a fourth interface, and the routing information of the recovery path; and, the first node establishes a cross-connection of the recovery path on the basis of the first tag, of the first interface, of the fourth tag, and of the fourth interface. Also disclosed are a system and a node device for establishing the recovery path. |
