EVPN Interworking with IPVPN
draft-rabadan-sajassi-bess-evpn-ipvpn-interworking-01

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BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                                     Nokia
Intended status: Standards Track                         A. Sajassi, Ed.
                                                                   Cisco

                                                                E. Rosen
                                                                J. Drake
                                                                  W. Lin
                                                                 Juniper

                                                               J. Uttaro
                                                                    AT&T

                                                              A. Simpson
                                                                   Nokia

Expires: January 3, 2019                                    July 2, 2018

                      EVPN Interworking with IPVPN
         draft-rabadan-sajassi-bess-evpn-ipvpn-interworking-01

Abstract

   EVPN is used as a unified control plane for tenant network intra and
   inter-subnet forwarding. When a tenant network spans not only EVPN
   domains but also domains where IPVPN provides inter-subnet
   forwarding, there is a need to specify the interworking aspects
   between both EVPN and IPVPN domains, so that the end to end tenant
   connectivity can be accomplished. This document specifies how EVPN
   should interwork with VPN-IPv4/VPN-IPv6 and IPv4/IPv6 BGP families
   for inter-subnet forwarding.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
 

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   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

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   This Internet-Draft will expire on January 3, 2019.

Copyright Notice

   Copyright (c) 2018 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
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   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 and Problem Statement  . . . . . . . . . . . . . .  3
   2. Terminology and Interworking PE Components  . . . . . . . . . .  3
   3. Domain Path Attribute (D-PATH)  . . . . . . . . . . . . . . . .  9
     3.1. D-PATH and Loop Prevention  . . . . . . . . . . . . . . . . 11
   4. BGP Path Attribute Propagation across ISF SAFIs . . . . . . . . 12
     4.1. No-Propagation-Mode . . . . . . . . . . . . . . . . . . . . 12
     4.2. Uniform-Propagation-Mode  . . . . . . . . . . . . . . . . . 12
     4.3. Aggregation of Routes and Path Attribute Propagation  . . . 13
   5. Route Selection Process between EVPN and other ISF SAFIs  . . . 14
   6. Composite PE Procedures . . . . . . . . . . . . . . . . . . . . 15
   7. Gateway PE Procedures . . . . . . . . . . . . . . . . . . . . . 17
   8. Interworking Use-Cases  . . . . . . . . . . . . . . . . . . . . 19
   9. Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . . . 21
   10. Conventions used in this document  . . . . . . . . . . . . . . 21
   11. Security Considerations  . . . . . . . . . . . . . . . . . . . 21
   12. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 21
   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 21
 

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     13.1. Normative References . . . . . . . . . . . . . . . . . . . 21
     13.2. Informative References . . . . . . . . . . . . . . . . . . 22