Multi-site EVPN based VXLAN using Border Gateways
draft-sharma-multi-site-evpn-02

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Last updated 2017-01-05
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Internet Engineering Task Force                           R. Sharma, Ed.
Internet-Draft                                               A. Banerjee
Intended status: Standards Track                             R. Sivaramu
Expires: July 9, 2017                                         A. Sajassi
                                                           Cisco Systems
                                                         January 5, 2017

           Multi-site EVPN based VXLAN using Border Gateways
                    draft-sharma-multi-site-evpn-02

Abstract

   This document describes the procedures for interconnecting two or
   more BGP based Ethernet VPN (EVPN) sites in a scalable fashion over
   an IP-only network.  The motivation is to support extension of EVPN
   sites without having to rely on typical Data Center Interconnect
   (DCI) technologies like MPLS/VPLS for the interconnection.  The
   requirements for such a deployment are very similar to the ones
   specified in RFC 7209 -- "Requirements for Ethernet VPN (EVPN)".

Status of This Memo

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   This Internet-Draft will expire on July 9, 2017.

Copyright Notice

   Copyright (c) 2017 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
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   carefully, as they describe your rights and restrictions with respect

Sharma, et al.            Expires July 9, 2017                  [Page 1]
Internet-Draft               Multi-site EVPN                January 2017

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Multi-Site EVPN Overview  . . . . . . . . . . . . . . . . . .   4
     3.1.  MS-EVPN Interconnect Requirements . . . . . . . . . . . .   4
     3.2.  MS-EVPN Interconnect concept and framework  . . . . . . .   5
   4.  Multi-site EVPN Interconnect Procedures . . . . . . . . . . .   8
     4.1.  Border Gateway Discovery  . . . . . . . . . . . . . . . .   8
     4.2.  Border Gateway Provisioning . . . . . . . . . . . . . . .  10
       4.2.1.  Border Gateway Designated Forwarder Election  . . . .  11
       4.2.2.  Anycast Border Gateway  . . . . . . . . . . . . . . .  11
       4.2.3.  Multi-path Border Gateway . . . . . . . . . . . . . .  12
     4.3.  EVPN route processing at Border Gateway . . . . . . . . .  13
     4.4.  Multi-Destination tree between Border Gateways  . . . . .  14
     4.5.  Inter-site Unicast traffic  . . . . . . . . . . . . . . .  15
     4.6.  Inter-site Multi-destination traffic  . . . . . . . . . .  15
     4.7.  Host Mobility . . . . . . . . . . . . . . . . . . . . . .  15
   5.  Convergence . . . . . . . . . . . . . . . . . . . . . . . . .  16
     5.1.  Fabric to Border Gateway Failure  . . . . . . . . . . . .  16
     5.2.  Border Gateway to Border Gateway Failures . . . . . . . .  16
   6.  Interoperability  . . . . . . . . . . . . . . . . . . . . . .  16
   7.  Isolation of Fault Domains  . . . . . . . . . . . . . . . . .  16
   8.  Loop detection and Prevention . . . . . . . . . . . . . . . .  17
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  17
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  18
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     12.2.  Informative References . . . . . . . . . . . . . . . . .  18
   Appendix A.  Additional Stuff . . . . . . . . . . . . . . . . . .  18
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18
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