| 摘要 |
A method, a system, and a device for establishing a pseudo wire are disclosed in embodiments of the present invention and are applicable to the field of communications technologies. The method for establishing a pseudo wire in the embodiments of the present invention includes: receiving, by a switching provider edge at a bifurcation position, a label mapping message, obtaining information of the switching provider edge at the bifurcation position and information of at least two next hops or outgoing interfaces of the switching provider edge through parsing, comparing the information of the switching provider edge at the bifurcation position with information of a local device, and if the information of the switching provider edge at the bifurcation position matches with the information of the local device, establishing at least two pseudo wires from the switching provider edge according to the information of at least two next hops or outgoing interfaces. In the method in the embodiments of the present invention, a TPE only needs to send one label mapping message to establish at least two pseudo wires, thereby reducing a resource consumed by pseudo wire establishment. In addition, when an active pseudo wire is faulty, the switching provider edge at the bifurcation position may directly perform an active/standby pseudo wire switchover, so that a fast recovery switchover process of an active/standby pseudo wire is simplified, and segment protection of an MS-PW can be provided from the switching provider edge at the bifurcation position, thereby making better use of a network resource. |
