Patent ID: 9100213
Filing Date: 2015-08-04
Classification: H04L

Abstract:
1. A method comprising: establishing, with a router, a layer two (L2) virtual private networking (L2VPN) instance to provide L2 connectivity between a local L2 network for the router and a remote L2 network for the router, wherein the router is addressable by a first gateway L2 address; receiving, with the router, a gateway L2 address synchronization message that specifies a second gateway L2 address for a remote router of the L2VPN instance, the second gateway L2 address different than the first gateway L2 address; receiving, with the router, a L2 PDU from the local L2 network on a service interface for the L2VPN instance; and extracting, with the router in response to determining the L2 PDU has an L2 destination address that matches the second gateway L2 address, a layer three (L3) packet carried by the L2 PDU and routing the L3 packet to an L3 network external to the L2VPN instance based on a destination L3 address of the L3 packet.