Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)
RFC 7796

Document Type RFC - Proposed Standard (March 2016; No errata)
Last updated 2016-03-16
Replaces draft-jiang-l2vpn-vpls-pe-etree
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication Jun 2016
Document shepherd Stewart Bryant
Shepherd write-up Show (last changed 2015-11-13)
IESG IESG state RFC 7796 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Deborah Brungard
Send notices to "Dr. Nabil N. Bitar" <nabil.n.bitar@verizon.com>, draft-ietf-l2vpn-vpls-pe-etree.all@ietf.org
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
1;2c.
Internet Engineering Task Force (IETF)                     Y. Jiang, Ed.
Request for Comments: 7796                                       L. Yong
Category: Standards Track                                         Huawei
ISSN: 2070-1721                                                  M. Paul
                                                        Deutsche Telekom
                                                              March 2016

  Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)

Abstract

   This document specifies a generic Virtual Private LAN Service (VPLS)
   solution, which uses VLANs to indicate root or leaf traffic to
   support Ethernet-Tree (E-Tree) services.  A VPLS Provider Edge (PE)
   model is illustrated as an example for the solution.  In the
   solution, E-Tree VPLS PEs are interconnected by Pseudowires (PWs),
   which carry the VLAN indicating the E-Tree attribute.  The MAC
   address-based Ethernet forwarding engine and the PW work in the same
   way as specified in RFC 4762 and RFC 4448, respectively.  A signaling
   mechanism is described to support E-Tree capability and VLAN mapping
   negotiation.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc7796.

Jiang, et al.                Standards Track                    [Page 1]
RFC 7796                 E-Tree Support in VPLS               March 2016

Copyright Notice

   Copyright (c) 2016 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.  Conventions Used in This Document . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  PE Model with E-Tree Support  . . . . . . . . . . . . . . . .   5
     4.1.  Existing PE Models  . . . . . . . . . . . . . . . . . . .   5
     4.2.  A New PE Model with E-Tree Support  . . . . . . . . . . .   8
   5.  PW for E-Tree Support . . . . . . . . . . . . . . . . . . . .   9
     5.1.  PW Encapsulation  . . . . . . . . . . . . . . . . . . . .   9
     5.2.  VLAN Mapping  . . . . . . . . . . . . . . . . . . . . . .  10
     5.3.  PW Processing . . . . . . . . . . . . . . . . . . . . . .  11
       5.3.1.  PW Processing in the VLAN Mapping Mode  . . . . . . .  11
       5.3.2.  PW Processing in the Compatible Mode  . . . . . . . .  12
       5.3.3.  PW Processing in the Optimized Mode . . . . . . . . .  13
   6.  Signaling for E-Tree Support  . . . . . . . . . . . . . . . .  14
     6.1.  LDP Extensions for E-Tree Support . . . . . . . . . . . .  14
     6.2.  BGP Extensions for E-Tree Support . . . . . . . . . . . .  17
   7.  OAM Considerations  . . . . . . . . . . . . . . . . . . . . .  19
   8.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .  19
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  20
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  20
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  20
     11.2.  Informative References . . . . . . . . . . . . . . . . .  21
   Appendix A.  Other PE Models for E-Tree . . . . . . . . . . . . .  23
     A.1.  A PE Model with a VSI and No Bridge . . . . . . . . . . .  23
     A.2.  A PE Model with External E-Tree Interface . . . . . . . .  24
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  25
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  25
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  26

Jiang, et al.                Standards Track                    [Page 2]
RFC 7796                 E-Tree Support in VPLS               March 2016
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