Extensions to the Virtual Private LAN Service (VPLS) Provider Edge (PE) Model for Provider Backbone Bridging
RFC 7041

Document Type RFC - Informational (November 2013; No errata)
Last updated 2013-11-25
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IESG note Giles Heron (giheron@cisco.com) is the document shepherd.
Send notices to l2vpn-chairs@ietf.org, draft-ietf-l2vpn-pbb-vpls-pe-model@ietf.org
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Internet Engineering Task Force (IETF)                     F. Balus, Ed.
Request for Comments: 7041                                Alcatel-Lucent
Category: Informational                                  A. Sajassi, Ed.
ISSN: 2070-1721                                                    Cisco
                                                           N. Bitar, Ed.
                                                                 Verizon
                                                           November 2013

           Extensions to the Virtual Private LAN Service (VPLS)
          Provider Edge (PE) Model for Provider Backbone Bridging

Abstract

   The IEEE 802.1 Provider Backbone Bridges (PBBs) specification defines
   an architecture and bridge protocols for interconnection of multiple
   Provider Bridged Networks (PBNs).  Provider backbone bridging was
   defined by IEEE as a connectionless technology based on multipoint
   VLAN tunnels.  PBB can be used to attain better scalability than
   Provider Bridges (PBs) in terms of the number of customer Media
   Access Control addresses and the number of service instances that can
   be supported.

   The Virtual Private LAN Service (VPLS) provides a framework for
   extending Ethernet LAN services, using MPLS tunneling capabilities,
   through a routed MPLS backbone without running the Rapid Spanning
   Tree Protocol (RSTP) or the Multiple Spanning Tree Protocol (MSTP)
   across the backbone.  As a result, VPLS has been deployed on a large
   scale in service provider networks.

   This document discusses extensions to the VPLS Provider Edge (PE)
   model required to incorporate desirable PBB components while
   maintaining the service provider fit of the initial model.

Balus, et al.                 Informational                     [Page 1]
RFC 7041           Extensions to VPLS PE Model for PBB     November 2013

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7041.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................3
   2. General Terminology .............................................4
   3. PE Reference Model ..............................................6
   4. Packet Walkthrough ..............................................9
   5. Control Plane ..................................................11
   6. Efficient Packet Replication in PBB VPLS .......................12
   7. PBB VPLS OAM ...................................................12
   8. Security Considerations ........................................12
   9. References .....................................................13
      9.1. Normative References ......................................13
      9.2. Informative References ....................................13
   10. Contributors ..................................................14
   11. Acknowledgments ...............................................15

Balus, et al.                 Informational                     [Page 2]
RFC 7041           Extensions to VPLS PE Model for PBB     November 2013

1.  Introduction

   The IEEE 802.1 Provider Backbone Bridges specification [PBB] defines
   an architecture and bridge protocols for interconnection of multiple
   Provider Bridged Networks (PBNs).  PBB can be used to attain better
   scalability than Provider Bridges [PB] in terms of the number of
   customer Media Access Control (MAC) addresses and the number of
   service instances that can be supported.  PBB provides a data-plane
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