Patent ID: 8520680
Filing Date: 2013-08-27
Classification: H04L

Abstract:
1. A method comprising: executing a provider backbone bridged network (PBBN) routing instance and a separate provider bridge network (PBN) routing instance on a network device, wherein PBBN routing instance and the PBN routing instance provide a layer two (L2) bridging service between a PBN and a PBBN using an L2 network address table controlled by the PBBN routing instance and a separate L2 network address table controlled by the PBN routing instance; receiving, on a first interface of the PBBN routing instance, a layer two (L2) packet from a first backbone virtual local area network (B-VLAN) of the PBBN; identifying, with the network device, a backbone source L2 network address specified by an outer header of the L2 packet in association with the B-VLAN; updating both the L2 network address table controlled by the PBBN routing instance and the L2 network address table controlled by the PBN routing instance to associate the backbone source L2 network address and the B-VLAN with the first interface on which the L2 packet was received; and forwarding L2 packets with the network device between the PBBN and the PBN in accordance with the updated L2 network address tables.