Tutorial: MPLS-Based Layer 2 VPNs

Speakers: Florin Balus, Nortel Mike Loomis, Nortel This tutorial discusses the L2 VPN-over-MPLS solutions being standardized in the IETF. The first part of the session covers the drivers, the enterprise perspective of the main models (Virtual Private Wire Services, VPWS, and Virtual Private LAN Service, VPLS) and related technology in the standards. The second section describes the building blocks common to all L2 VPN models. The third part of the tutorial discusses the specifics of VPWS and VPLS. We also discuss Layer 2 internetworking concepts, i.e., bridged and routed mode solutions, options for ARP mediation, options for MPLS encapsulation, and end to end OAM. Configuration examples from several vendors will be given for the various solutions covered in the tutorial. This session requires a basic understanding of MPLS technology, including control plane and data plane concepts. We begin with simple, generic models, and move gradually to more complex concepts to appeal to a variety of attendees: product managers, network planners/architects, system engineers, network operations staff, customer support, applications engineering, and development engineers who are new to the area of MPLS L2 VPN services. An outline of the session follows: Introduction to L2VPNs over MPLS Drivers, High-level Definitions, Standards IETF Generic Models Information Model/Provisioning Control Plane: Auto-discovery, Signaling Data Plane: Attachment Circuits, Virtual Forwarders, Pseudo-wires Virtual Private Wire Service (VPWS) Provisioning models (e.g., single-sided, double-sided provisioning), and related concepts (Gid, PWid FEC etc) Configuration Examples Layer 2 Internetworking Encapsulation options: Bridged/Routed Mode, MPLS Packet walkthrough, ARP Mediation Service OAM Configuration Example Virtual Private Line Service (VPLS) LDP, BGP VPLS commonalities and differences VPLS Signaling, Data Plane Configuration Example Summary See more at: https://www.nanog.org/meetings/nanog30/agenda