Multicast VPN fast upstream failover
draft-ietf-bess-mvpn-fast-failover-04

Document Type Active Internet-Draft (bess WG)
Last updated 2018-12-06 (latest revision 2018-11-06)
Replaces draft-morin-bess-mvpn-fast-failover
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Send notices to "Martin Vigoureux" <martin.vigoureux@alcatel-lucent.com>
Network Working Group                                      T. Morin, Ed.
Internet-Draft                                                    Orange
Intended status: Standards Track                          R. Kebler, Ed.
Expires: May 10, 2019                                   Juniper Networks
                                                          G. Mirsky, Ed.
                                                               ZTE Corp.
                                                        November 6, 2018

                  Multicast VPN fast upstream failover
                 draft-ietf-bess-mvpn-fast-failover-04

Abstract

   This document defines multicast VPN extensions and procedures that
   allow fast failover for upstream failures, by allowing downstream PEs
   to take into account the status of Provider-Tunnels (P-tunnels) when
   selecting the upstream PE for a VPN multicast flow, and extending BGP
   MVPN routing so that a C-multicast route can be advertised toward a
   standby upstream PE.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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).  Note that other groups may also distribute
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 10, 2019.

Morin, et al.             Expires May 10, 2019                  [Page 1]
Internet-Draft         mVPN fast upstream failover         November 2018

Copyright Notice

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   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  UMH Selection based on tunnel status  . . . . . . . . . . . .   3
     3.1.  Determining the status of a tunnel  . . . . . . . . . . .   4
       3.1.1.  mVPN tunnel root tracking . . . . . . . . . . . . . .   5
       3.1.2.  PE-P Upstream link status . . . . . . . . . . . . . .   5
       3.1.3.  P2MP RSVP-TE tunnels  . . . . . . . . . . . . . . . .   5
       3.1.4.  Leaf-initiated P-tunnels  . . . . . . . . . . . . . .   6
       3.1.5.  ((S, G)) counter information  . . . . . . . . . . . .   6
       3.1.6.  BFD Discriminator . . . . . . . . . . . . . . . . . .   6
       3.1.7.  Per PE-CE link BFD Discriminator  . . . . . . . . . .   9
   4.  Standby C-multicast route . . . . . . . . . . . . . . . . . .  10
     4.1.  Downstream PE behavior  . . . . . . . . . . . . . . . . .  11
     4.2.  Upstream PE behavior  . . . . . . . . . . . . . . . . . .  12
     4.3.  Reachability determination  . . . . . . . . . . . . . . .  13
     4.4.  Inter-AS  . . . . . . . . . . . . . . . . . . . . . . . .  13
       4.4.1.  Inter-AS procedures for downstream PEs, ASBR fast
               failover  . . . . . . . . . . . . . . . . . . . . . .  14
       4.4.2.  Inter-AS procedures for ASBRs . . . . . . . . . . . .  14
   5.  Hot leaf standby  . . . . . . . . . . . . . . . . . . . . . .  14
   6.  Duplicate packets . . . . . . . . . . . . . . . . . . . . . .  15
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  16
   10. Contributor Addresses . . . . . . . . . . . . . . . . . . . .  16
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     11.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19
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