Multicast-only Fast Reroute Based on Topology Independent Loop-free Alternate Fast Reroute
draft-liu-pim-mofrr-tilfa-03

Document Type Active Internet-Draft (individual)
Authors Yisong Liu  , Mike McBride  , Zheng Zhang  , Jingrong Xie 
Last updated 2021-02-20
Stream (None)
Intended RFC status (None)
Formats plain text pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
PIM Working Group                                            Yisong Liu
Internet Draft                                             China Mobile
Intended status: Standards Track                             M. McBride
Expires: August 21, 2021                                      Futurewei
                                                               Z. Zhang
                                                                    ZTE
                                                                 J. Xie
                                                                 Huawei
                                                           Feb 21, 2021

    Multicast-only Fast Reroute Based on Topology Independent Loop-free
                          Alternate Fast Reroute
                       draft-liu-pim-mofrr-tilfa-03

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), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   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."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on August 21, 2021.

Copyright Notice

   Copyright (c) 2021 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

Liu, et al.             Expires August, 2021                  [Page 1]
Internet-Draft          MoFRR based on TILFA             February 2021

   publication of this document. Please review these documents
   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.

Abstract

   Multicast-only Fast Reroute (MoFRR) has been defined in [RFC7431],
   but the selection of the secondary multicast next hop only according
   to the loop-free alternate fast reroute, which has restrictions in
   multicast deployments. This document describes a mechanism for
   Multicast-only Fast Reroute by using Topology Independent Loop-free
   Alternate fast reroute, which is independent of network topology and
   can achieve covering more network environments.

Table of Contents

   1. Introduction ................................................ 2
      1.1. Requirements Language .................................. 3
      1.2. Terminology ............................................ 3
   2. Problem Statement ........................................... 3
   3. Solution .................................................... 4
      3.1. Secondary UMH Selection ................................ 5
      3.2. Extension Protocol Fields Conflict ..................... 5
   4. Packet Format ............................................... 6
   5. IANA Considerations ......................................... 7
   6. Security Consideration  ..................................... 7
   7. References .................................................. 7
      7.1. Normative References ................................... 7
      7.2. Informative References ................................. 8
   8. Acknowledgments ............................................. 8
   Authors' Addresses ............................................. 9

1. Introduction

   As the deployment of video services, operators are paying more and
   more attention to solutions that minimize the service disruption due
   to faults in the IP network carrying the packets for these services.
   Multicast-only Fast Reroute (MoFRR) has been defined in [RFC7431],
   which can minimize multicast packet loss in a network when node or
   link failures occur by making simple enhancements to multicast
   routing protocols such as Protocol Independent Multicast (PIM). But
   the selection of the secondary multicast next hop only according to
   the loop-free alternate fast reroute in [RFC7431], and there are
   limitations in multicast deployments for this mechanism. This

Liu, et al.             Expires August, 2021                  [Page 2]
Internet-Draft          MoFRR based on TILFA             February 2021
Show full document text