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 the 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 Provider Edges (PEs) in their brownfield deployments of VPLS/PBB-VPLS networks. This document specifies the control-plane and forwarding behavior needed for the auto-discovery of the following: 1) a VPN instance, 2) multicast and unicast operation, and 3) a Media Access Control (MAC) mobility operation. This enables seamless integration between EVPN and VPLS PEs as well as between PBB-VPLS and PBB-EVPN PEs.