Cross-domain protection intercommunication method and system

Abstract

The invention discloses a cross-domain protection intercommunication method and system. Wherein, the method includes: the interconnection node on the cross-domain working path between the first domain and the second domain sends the second identification information of the second domain to the first node in the first domain, wherein the first domain and the second domain The two domains are mutually adjacent domains; when a link failure occurs in the first domain, the interconnection backup node between the first domain and the second domain receives the first fault state information sent by the first node, wherein the first fault state information Carrying the second identification information; the interconnected backup node activates the second protection path in the second domain according to the second identification information, and uses the first protection path and the second protection path in the first domain to perform cross-domain service transmission. Through the present invention, the effect of ensuring the protection independence in each domain to realize the interoperability of cross-domain protection can be achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a cross-domain protection intercommunication method and system. Background technique [0002] For the current various protection technologies, it is mainly the protection and recovery of services within a single domain; for the protection and recovery of cross-domain services, since the protection protocols between domains cannot communicate with each other, it is easy If the interconnected nodes fail, cross-domain services cannot be restored and protected in time. [0003] At present, for the problem that the service protection method in a single domain cannot protect and restore cross-domain services, the solutions are mainly considered from the following aspects: 1. A cross-domain end-to-end protection path can be established or configured to restore and protect services. Please refer to figure 1 ( figure 1 It is a schematic diagram of cross-domain end-to-end protection a...

AI Technical Summary

Problems solved by technology

However, since the OAM detection mechanism based on the link layer is adopted in ring network protection, when a fault occurs, the APS message or PSC message sent along the link layer on the ring is not an APS message or a PSC message for a specific path. PSC message, so it is inconvenient to carry the path to the corresponding working path on another adjacent domain, making cross-domain protection between two adjacent domains difficult to achieve

[0005] For the problem that cross-domain segment-by-segment protection is difficult to achieve in related technologies, no effective solution has been proposed so far

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