In-band signalling for point-point packet protection switching

Details In-band signalling for point-point packet protection switching In-band signalling for point-point packet protection switching

H - Electricity

04

L

H04L 12/24 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2744272

A method of controlling traffic forwarding in a Provider Backbone - Traffic Engineered (PBB-TE) network. A protection group (PG) is defined, and including N working Traffic Engineered Service Instances (TESIs) and M protection TESIs. An Automatic Protection Switching Protocol Data Unit (APS PDU) is defined, which includes information defining at least a state of the protection group. This APS PDU is forwarded only through the protection TESI(s).

Selon l'invention, un procédé permet de commander le réacheminement du trafic au sein d'un réseau PBB-TE (Provider Backbone - Traffic Engineered). Un groupe de protection (PG) est défini et inclut N instances TESI(Traffic Engineered Service Instances) opérationnelles et M instances TESI de protection. Une unité de données APS PDU (Automatic Protection Switching Protocol Data Unit) est définie et comporte des informations définissant au moins un état du groupe de protection. Cette unité APS PDU nest réacheminée qu'au travers des instances TESI de protection.

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