With the adoption of MPLS in service provider and enterprise networks, L2VPN allows the delivery of Layer 2 connectivity to end-users over this infrastructure. The most popular examples include Ethernet services used by Enterprises for WAN or Data Center Interconnect applications. L2VPN also plays an important role for Mobile Operators fulfilling ATM/TDM connectivity requirements used for legacy mobile backhaul transport.
The presentation provides fundamental and advanced topics associated with the deployment of L2VPN over an MPLS network, emphasizing Ethernet-based point-to-point and multipoint VPNs. We will cover deployment considerations including: Signaling, Auto-discovery, Resiliency and Inter-Autonomous Systems (Inter-AS). Discussion topics will be illustrated with IOS and IOS-XR sample configurations. Finally, we will look at the latest work at the Internet Engineering Task Force (IETF), including BGP MPLS-based Ethernet VPNs (E-VPN).