Support for Shortest Path Bridging MAC Mode over Ethernet VPN (EVPN)
RFC 7734

Document Type RFC - Proposed Standard (January 2016; No errata)
Last updated 2016-01-22
Replaces draft-ietf-l2vpn-spbm-evpn
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Martin Vigoureux
Shepherd write-up Show (last changed 2015-07-24)
IESG IESG state RFC 7734 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Alvaro Retana
Send notices to aretana@cisco.com
IANA IANA review state Version Changed - Review Needed
IANA action state No IANA Actions
Internet Engineering Task Force (IETF)                     D. Allan, Ed.
Request for Comments: 7734                                   J. Tantsura
Category: Standards Track                                       Ericsson
ISSN: 2070-1721                                                 D. Fedyk
                                                                     HPE
                                                              A. Sajassi
                                                                   Cisco
                                                            January 2016

  Support for Shortest Path Bridging MAC Mode over Ethernet VPN (EVPN)

Abstract

   This document describes how Ethernet Shortest Path Bridging MAC mode
   (SPBM) can be combined with Ethernet VPN (EVPN) to interwork with
   Provider Backbone Bridging Provider Edges (PBB PEs) as described in
   the PBB-EVPN solution (RFC 7623).  This is achieved via operational
   isolation of each Ethernet network attached to an EVPN core while
   supporting full interworking between the different variations of
   Ethernet networks.

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/rfc7734.

Allan, et al.                Standards Track                    [Page 1]
RFC 7734                 SPBM Support over EVPN             January 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
      1.1. Requirements Language ......................................3
   2. Conventions Used in This Document ...............................3
      2.1. Terminology ................................................3
   3. Solution Overview ...............................................4
   4. Elements of Procedure ...........................................5
      4.1. PE Configuration ...........................................5
      4.2. DF Election ................................................6
      4.3. Control-Plane Interworking ISIS-SPB to EVPN ................6
      4.4. Control-Plane Interworking EVPN to ISIS-SPB ................7
      4.5. Data-Plane Interworking SPBM Island or PBB PE to EVPN ......8
      4.6. Data-Plane Interworking EVPN to SPBM Island ................8
      4.7. Data-Plane Interworking EVPN to PBB PE .....................8
      4.8. Multicast Support ..........................................8
   5. Other Aspects ...................................................8
      5.1. Transit ....................................................8
   6. Security Considerations .........................................9
   7. References .....................................................10
      7.1. Normative References ......................................10
      7.2. Informative References ....................................10
   Acknowledgments ...................................................11
   Authors' Addresses ................................................11

Allan, et al.                Standards Track                    [Page 2]
RFC 7734                 SPBM Support over EVPN             January 2016

1.  Introduction

   This document describes how Ethernet Shortest Path Bridging MAC mode
   (SPBM) [IEEE.802.1Q] along with Provider Backbone Bridging Provider
   Edges (PBB PEs) and Provider Backbone Bridged Networks (PBBNs) can be
   supported by Ethernet VPNs (EVPNs) such that each SPBM island is
   operationally isolated while providing full L2 connectivity between
   the different types of PBBNs where desired.  Each SPBM island uses
   its own control-plane instance and multipathing design, be it
   multiple equal-cost tree sets or multiple spanning trees.

   The intention is to permit past, current, and emerging future
   versions of Ethernet to be seamlessly interconnected to permit large-
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