Method for implementing bidirectional protection switching...

H - Electricity – 04 – L

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H04L 29/06 (2006.01)

Patent

CA 2570333

A method for implementing the bi-directional protection switch of Multiple Protocol Label Switch. The method mainly comprises: first, in Multiple Protocol Label Switch(MPLS) network, configure the corresponding bi- directional protection switch strategy information for the bi-directional Label Switch Path(LSP) based on Automatic Protection Switch(APS) protocol; when it determines to need the bi-directional protection switch based on APS protocol in MPLS network, performs the bi-directional protection switch operation according to the configuration of the bi-directional protection switch strategy information. The invention effectively implements the protection for MPLS LSP bi-directional data channel, ensures that the delay of bi-directional traffic is equal; meanwhile, APS protocol introduced by the invention includes the protection of MPLS LSP unidirectional data channel, accordingly unified implementing the protection mechanism of the unidirectional and the bi-directional.

Procédé de mise en oeuvre de commutation de protection bidirectionnelle pour commutation d'étiquette de protocole multiple, comprenant essentiellement les étapes suivantes : premièrement, dans un réseau à commutation d'étiquette de protocole multiple (MPLS), configuration de l'information de stratégie de commutation de protection bidirectionnelle correspondante pour le trajet de commutation d'étiquette (LSP) dur la base du protocole de commutation de protection automatique (APS) ; une fois déterminée la nécessité de commutation de protection bidirectionnelle sur la base du protocole APS dans le réseau MPLS, lancement de la commutation de protection considérée selon la configuration de l'information susmentionnée. On assure ainsi la mise en oeuvre efficace de la protection pour un canal de données bidirectionnel MPLS LSP, avec un retard équivalent sur le trafic bidirectionnel ; par ailleurs, le protocole APS décrit assure la protection de canal de données unidirectionnel MPLS LSP, avec mise en oeuvre unifiée de la protection en mode unidirectionnel/bidirectionnel.

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