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A Framework for Ethernet Tree (E-Tree) Service over a Multiprotocol Label Switching (MPLS) Network
RFC 7387

Internet Engineering Task Force (IETF)                       R. Key, Ed.
Request for Comments: 7387
Category: Informational                                     L. Yong, Ed.
ISSN: 2070-1721                                                   Huawei
                                                               S. Delord
                                                                 Telstra
                                                               F. Jounay
                                                               Orange CH
                                                                  L. Jin
                                                            October 2014

             A Framework for Ethernet Tree (E-Tree) Service
          over a Multiprotocol Label Switching (MPLS) Network

Abstract

   This document describes an Ethernet-Tree (E-Tree) solution framework
   for supporting the Metro Ethernet Forum (MEF) E-Tree service over a
   Multiprotocol Label Switching (MPLS) network.  The objective is to
   provide a simple and effective approach to emulate E-Tree services in
   addition to Ethernet LAN (E-LAN) services on an existing MPLS
   network.

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/rfc7387.

Key, et al.                   Informational                     [Page 1]
RFC 7387                    E-Tree Framework                October 2014

Copyright Notice

   Copyright (c) 2014 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
      1.1. Terminology ................................................3
   2. Overview ........................................................4
      2.1. Ethernet Bridge Network ....................................4
      2.2. MEF Multipoint Ethernet Services: E-LAN and E-Tree .........4
      2.3. IETF L2VPN .................................................5
           2.3.1. Virtual Private LAN Service (VPLS) ..................5
           2.3.2. Ethernet VPN (EVPN) .................................5
           2.3.3. Virtual Private Multicast Service (VPMS) ............6
   3. E-Tree Architecture Reference Model .............................6
   4. E-Tree Use Cases ................................................8
   5. L2VPN Gaps for Emulating MEF E-Tree Service .....................9
      5.1. No Differentiation on AC Role ..............................9
      5.2. No AC Role Indication or Advertisement .....................9
      5.3. Other Issues ...............................................9
   6. Security Considerations ........................................10
   7. References .....................................................11
      7.1. Normative References ......................................11
      7.2. Informative References ....................................11
   Acknowledgments ...................................................12
   Contributors ......................................................12
   Authors' Addresses ................................................13

Key, et al.                   Informational                     [Page 2]
RFC 7387                    E-Tree Framework                October 2014

1.  Introduction

   This document describes an Ethernet-Tree (E-Tree) solution framework
   for supporting the Metro Ethernet Forum (MEF) E-Tree service over a
   Multiprotocol Label Switching (MPLS) network.  The objective is to
   provide a simple and effective approach to emulate E-Tree services in

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