Multicast only Fast Re-Route
draft-ietf-rtgwg-mofrr-06

The information below is for an old version of the document
Document Type Active Internet-Draft (rtgwg WG)
Authors Apoorva Karan  , Clarence Filsfils  , IJsbrand Wijnands  , Bruno Decraene 
Last updated 2015-05-11 (latest revision 2015-02-06)
Replaces draft-karan-mofrr
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Intended RFC status Informational
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Network Working Group                                           A. Karan
Internet-Draft                                               C. Filsfils
Intended status: Informational                         IJ. Wijnands, Ed.
Expires: August 8, 2015                              Cisco Systems, Inc.
                                                             B. Decraene
                                                                  Orange
                                                        February 4, 2015

                      Multicast only Fast Re-Route
                       draft-ietf-rtgwg-mofrr-06

Abstract

   As IPTV deployments grow in number and size, service providers are
   looking for solutions that minimize the service disruption due to
   faults in the IP network carrying the packets for these services.
   This document describes a mechanism for minimizing packet loss in a
   network when node or link failures occur.  Multicast only Fast Re-
   Route (MoFRR) works by making simple enhancements to multicast
   routing protocols such as PIM and mLDP.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 August 8, 2015.

Copyright Notice

   Copyright (c) 2015 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

Karan, et al.            Expires August 8, 2015                 [Page 1]
Internet-Draft                    MoFRR                    February 2015

   carefully, as they describe your rights and restrictions with respect
   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.  Conventions used in this document . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Basic Overview  . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Determination of the secondary UMH  . . . . . . . . . . . . .   4
     3.1.  ECMP-mode MoFRR . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Non-ECMP-mode MoFRR . . . . . . . . . . . . . . . . . . .   5
   4.  Upstream Multicast Hop Selection  . . . . . . . . . . . . . .   5
     4.1.  PIM . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  mLDP  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Detecting Failures  . . . . . . . . . . . . . . . . . . . . .   6
   6.  MoFRR applicability . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  Dual-Plane Topology . . . . . . . . . . . . . . . . . . .   7
     6.2.  Capacity Planning for MoFRR . . . . . . . . . . . . . . .  10
     6.3.  PE nodes  . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.4.  Other Applications  . . . . . . . . . . . . . . . . . . .  11
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   10. Contributor Addresses . . . . . . . . . . . . . . . . . . . .  12
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     11.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   Different solutions have been developed and deployed to improve
   service guarantees, both for multicast video traffic and Video on
   Demand traffic.  Most of these solutions are geared towards finding
   an alternate path around one or more failed network elements (link,
   node, path failures).

   This document describes a mechanism for minimizing packet loss in a
   network when node or link failures occur.  Multicast only Fast Re-
   Route (MoFRR) works by making simple changes to the way selected
   routers use multicast protocols such as PIM and mLDP.  No changes to
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