An address resolution optimization procedure to effect a gradual transition from a provider bridge network to a VPLS or provider backbone bridging network

摘要

A method and apparatus that operates two bridging protocol in a hybrid bridging node (204C) is described. The operation of the two bridging protocols in the hybrid node (204C) allows for an incremental transition of a provider bridging network (200) from operating a legacy bridging protocol that shares MAC addresses to a bridging network that operates VPLS and/or PBB bridging protocols. The hybrid bridging node selectively broadcast address resolution packets and unicast packets with unknown MAC addresses from the nodes operating VPLS and/or PBB to nodes operating a legacy bridging protocol