| 摘要 |
A system and method of providing Ethernet protection switching in a PBB-TE Domain. The method begins by establishing two PBB-TE trunks (102, 104) between a first B-component (108) and a second B-component (112). Each trunk includes two unidirectional Ethernet Switching Paths, ESPs, with 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 (114) of the first trunk (102) associated with a first VID (128) and a second ESP (116) of the first trunk associated with a second VID (166). 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 (104) via a third ESP (118) associated with a third VID (130) and a fourth ESP (120) associated with a fourth VID (168). |
