Method for service protection and access device

Abstract

A method for service protection and an access device are provided. The method includes: the continuity fault detection of service level is performed at a service path between an access node and aggregation node, and a maintenance end point for performing the continuity fault detection of service level is configured at the access node and aggregation node; when the access node detects the continuity fault detection of service level, a standby physical link of a main physical link is activated, so that the standby Label Switching Path (LSP) and standby pseudo wire of the standby physical link are available; the service with fault is switched from the main pseudo wire carrying the service to the standby pseudo wire, wherein the main pseudo wire is the pseudo wire carried by the main LSP at the main physical link, and the standby pseudo wire is the pseudo wire carried by the standby LSP at the standby physical link. By using the method, the service protection process is simplified, and the protection methods of various services such as unicast, multicast and so on are integrated.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a service protection method and access equipment. Background technique [0002] MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) technology is a packet transmission technology based on label switching, which can support multiple services, provide good traffic engineering capabilities, and flexibility in network deployment. MPLS mainly has two ways of carrying Ethernet services: one is the point-to-point Ethernet private leased line service, and the other is the multipoint-to-multipoint Ethernet virtual local area network service, which correspond to VPWS (Virtual Private Wire Service, virtual Private leased line service) and VPLS (Virtual Private LAN Service, virtual private LAN service) technology. [0003] Under VPWS, after adding PW (Pseudowire, pseudowire) label and LSP (Label Switching Path, Label Switching Path) tunnel label to the ingre...

AI Technical Summary

Problems solved by technology

[0005] For a packet network that integrates unicast / multicast and multi-services using the above two technologies, when performing service protection, it is necessary to use different protection mechanisms for unicast and multicast services, and segment the multicast service. Protection, the protection methods involved are relatively cumbersome and have relatively large limitations, and the protection mechanisms for unicast and multicast services are not uniform

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