Seamless Integration of Ethernet VPN (EVPN) with Virtual Private LAN Service (VPLS) and Their Provider Backbone Bridge (PBB) Equivalents

This document specifies mechanisms for backward compatibility of Ethernet VPN (EVPN) and Provider Backbone Bridge Ethernet VPN (PBB- EVPN) solutions with Virtual Private LAN Service (VPLS) and Provider Backbone Bridge VPLS (PBB-VPLS) solutions. It also provides mechanisms for seamless integration of these two technologies in the same MPLS/IP network on a per-VPN-instance basis. Implementation of this document enables service providers to introduce EVPN/PBB-EVPN PEs in their brown-field deployments of VPLS/PBB-VPLS networks. This document specifies control-plane and forwarding behavior needed for auto- discovery of a VPN instance, multicast and unicast operation, as well as MAC-mobility operation in order to enable seamless integration between EVPN and VPLS PEs as well as between PBB-VPLS and PBB-EVPN PEs.