EVPN Interworking with IPVPN
draft-ietf-bess-evpn-ipvpn-interworking-01

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Last updated 2019-09-02
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BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                                     Nokia
Intended status: Standards Track                         A. Sajassi, Ed.
                                                                   Cisco

                                                                E. Rosen
                                                              Individual

                                                                J. Drake
                                                                  W. Lin
                                                                 Juniper

                                                               J. Uttaro
                                                                    AT&T

                                                              A. Simpson
                                                                   Nokia

Expires: March 5, 2020                                 September 2, 2019

                      EVPN Interworking with IPVPN
               draft-ietf-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-
 

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   Drafts.

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   This Internet-Draft will expire on March 5, 2020.

Copyright Notice

   Copyright (c) 2019 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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   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
 

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   12. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 21
   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 22
     13.1. Normative References . . . . . . . . . . . . . . . . . . . 22
     13.2. Informative References . . . . . . . . . . . . . . . . . . 22
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