Multicast VPN fast upstream failover
draft-ietf-bess-mvpn-fast-failover-02

Document Type Active Internet-Draft (bess WG)
Last updated 2017-03-13
Replaces draft-morin-bess-mvpn-fast-failover
Stream IETF
Intended RFC status Proposed Standard
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Network Working Group                                      T. Morin, Ed.
Internet-Draft                                                    Orange
Intended status: Standards Track                          R. Kebler, Ed.
Expires: September 14, 2017                             Juniper Networks
                                                          March 13, 2017

                  Multicast VPN fast upstream failover
                 draft-ietf-bess-mvpn-fast-failover-02

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 advertized toward a
   standby upstream PE.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

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

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   This Internet-Draft will expire on September 14, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Morin & Kebler         Expires September 14, 2017               [Page 1]
Internet-Draft         mVPN fast upstream failover            March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   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  . . . . . . . . . .   8
   4.  Standby C-multicast route . . . . . . . . . . . . . . . . . .   9
     4.1.  Downstream PE behavior  . . . . . . . . . . . . . . . . .  10
     4.2.  Upstream PE behavior  . . . . . . . . . . . . . . . . . .  11
     4.3.  Reachability determination  . . . . . . . . . . . . . . .  12
     4.4.  Inter-AS  . . . . . . . . . . . . . . . . . . . . . . . .  12
       4.4.1.  Inter-AS procedures for downstream PEs, ASBR fast
               failover  . . . . . . . . . . . . . . . . . . . . . .  13
       4.4.2.  Inter-AS procedures for ASBRs . . . . . . . . . . . .  13
   5.  Hot leaf standby  . . . . . . . . . . . . . . . . . . . . . .  13
   6.  Duplicate packets . . . . . . . . . . . . . . . . . . . . . .  14
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   10. Contributor Addresses . . . . . . . . . . . . . . . . . . . .  15
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  17
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  17
     11.2.  Informative References . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18
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