SYSTEM AND METHOD FOR ETHERNET PROTECTION SWITCHING IN A PROVIDER BACKBONE BRIDGING TRAFFIC ENGINEERING DOMAIN

摘要

A system and method of providing Ethernet protection switching in a PBB-TE Domain. Two PBB-TE trunks are established between a first B-component and a second B-component. Each trunk includes two unidirectional Ethernet Switching Paths (ESPs), each associated with a possibly different VLAN identifier. Data traffic is mapped onto the first PBB-TE trunk, where the first PBB-TE trunk corresponds to a working entity and the second PBB-TE trunk corresponds to a backup protection entity. Data traffic is sent via a first ESP of the first trunk associated with a first VID and a second ESP of the first trunk associated with a second VID. The two PBB-TE trunks are monitored for faults. Upon detecting a fault on one of the PBB-TE trunks, data traffic is remapped onto the other PBB-TE trunk via a third ESP associated with a third VID and a fourth ESP associated with a fourth VID.