A recovery method for user network interface failure of optical network

Abstract

The present invention proposes a method for recovering a failure of an optical network user network interface, which can effectively integrate two-layer network conditions through the interaction between the IP layer control module and the optical layer control module to recover the UNI link failure, specifically including the following steps: optical layer control The module conducts fault analysis and searches for available UNI interfaces; the optical layer control module requests coordinated recovery from the IP layer control module; the IP control module determines the best recovery plan for this layer and returns to the optical layer; the optical layer control module determines the best recovery plan for this layer, Collaborate with the IP layer to achieve the best multi-layer recovery solution for failures. By applying the present invention, the IP layer and the optical layer network are comprehensively used for fault recovery, which not only ensures that the recovery can be effectively realized, but also at the same time ensures that the IP layer recovery path is the shortest and retains the original optical layer working path to the greatest extent, effectively shortening the recovery time. Time, and provide a variety of recovery path options to improve the success rate of recovery.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a user network interface link failure recovery method in an optical network bearer packet network. Background technique [0002] User Network Interface (UNI for short) is an optical interface between an optical network and edge electrical equipment, through which the optical network and electrical equipment can be connected. In the optical network carrying packet network, the UNI is used as an interlayer link. When the UNI fails, the protection and recovery of services cannot be achieved only by relying on the optical layer. The existing protection technology directly starts the protection and recovery scheme of the IP layer, such as fast Rerouting (Fast Re-Route, FRR for short), Virtual Router Redundancy Protocol (Virtual Router Redundancy Protocol, VRRP for short), etc. achieve the purpose of protection. Compared with the optical layer, the protection and restoration ...

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Problems solved by technology

[0005] In order to overcome the defect that when the UNI link fails, the protection and recovery of the service cannot be realized only by relying on the optical layer, and the switching time is long when only relying on the protection and recovery scheme of the IP layer, a method for recovering the failure of the user network interface of the optical network is proposed

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