Fault recovery method of user network interface (UNI) of optical network

Abstract

The invention provides a fault recovery method of a user network interface (UNI) of an optical network. Conditions of two layers of networks can be integrated effectively by interaction between an IP (internal protocol)-layer control module and an optical-layer control module to recover UNI link fault. The method specifically includes the steps that the optical-layer control module performs fault analysis to search an available UNI; the optical-layer control module requests collaborative recovery to the IP-layer control module; the IP-layer control module determines an optimal recovery scheme thereof and replies the optical layer; the optical-layer control module determines an optimal recovery scheme thereof to collaborate with the IP layer to realize a multilayer optimal fault recovery scheme. By the method, the IP-layer and optical-layer networks are utilized integrally for fault recovery, effective realization of recovery can be guaranteed, an original optical-layer working path is reserved to the uttermost degree by guaranteeing a shortest IP-layer recover path, recovery time is shortened effectively, multiple recovery path options are provided, and success rate in recovery is increased.

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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