EVPN-VPWS Seamless Integration with Legacy VPWS
draft-brissette-bess-evpn-vpws-seamless-01

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BESS Working Group                                     P. Brissette, Ed.
Internet-Draft                                                A. Sajassi
Intended status: Standards Track                               L. Burdet
Expires: May 21, 2020                                      Cisco Systems
                                                               J. Uttaro
                                                                     ATT
                                                                D. Voyer
                                                             Bell Canada
                                                              I. Ghamari
                                                                   Telus
                                                               E. Leyton
                                                        Verizon Wireless
                                                       November 18, 2019

            EVPN-VPWS Seamless Integration with Legacy VPWS
               draft-brissette-bess-evpn-vpws-seamless-01

Abstract

   This document specifies mechanisms for backward compatibility of
   Ethernet VPN Virtual Private Wire Service (EVPN-VPWS) solutions with
   legacy Virtual Private Wire Service (VPWS).  It provides mechanisms
   for seamless integration in the same MPLS/IP network on a per-
   pseudowire or per flexible-crossconnect service basis.
   Implementation of this document enables service providers to
   introduce EVPN-VPWS PEs in their brown-field deployments of legacy
   VPWS networks.  This document specifies control-plane and forwarding
   behaviour needed for auto-discovery of a pseudowire in order to
   enable seamless integration between EVPN-VPWS and VPWS PEs.

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
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   This Internet-Draft will expire on May 21, 2020.

Brissette, et al.         Expires May 21, 2020                  [Page 1]
Internet-Draft              Abbreviated Title              November 2019

Copyright Notice

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   2.  Terms and Abbreviations . . . . . . . . . . . . . . . . . . .   4
   3.  Solution Requirements . . . . . . . . . . . . . . . . . . . .   5
   4.  Seamless Integration  . . . . . . . . . . . . . . . . . . . .   6
   5.  Capability Discovery  . . . . . . . . . . . . . . . . . . . .   6
   6.  Forwarding and Control Plane Operations . . . . . . . . . . .   7
     6.1.  Multi-homed Operations  . . . . . . . . . . . . . . . . .   8
       6.1.1.  Operations with Port-Active MH PEs  . . . . . . . . .   8
       6.1.2.  Operation with Single-Active MH PEs . . . . . . . . .   9
       6.1.3.  Operation with All-Active MH PEs  . . . . . . . . . .   9
         6.1.3.1.  Falling back to port-active . . . . . . . . . . .  10
         6.1.3.2.  Asymmetric forwarding . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     10.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   Virtual Private Wire Service (VPWS) is a widely-deployed Layer-2 VPN
   (L2VPN) technology.  Many service providers, who are looking at
   adopting Ethernet VPN Virtual Private Wire Service (EVPN-VPWS), want