Deprecating ASM for Interdomain Multicast
draft-acg-mboned-deprecate-interdomain-asm-02

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Last updated 2018-07-02
Replaces draft-acg-mboned-multicast-models
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Mboned                                                    M. Abrahamsson
Internet-Draft                                                 T-Systems
Intended status: Best Current Practice                          T. Chown
Expires: January 3, 2019                                            Jisc
                                                             L. Giuliano
                                                  Juniper Networks, Inc.
                                                               T. Eckert
                                                                  Huawei
                                                            July 2, 2018

               Deprecating ASM for Interdomain Multicast
             draft-acg-mboned-deprecate-interdomain-asm-02

Abstract

   This document recommends deprecation of the use of Any-Source
   Multicast (ASM) for interdomain multicast.  It recommends the use of
   Source-Specific Multicast (SSM) for interdomain multicast
   applications, and that hosts and routers that are expected to handle
   such applications fully support SSM.  The recommendations in this
   document do not preclude the continued use of ASM within a single
   organisation or domain, and are especially easy to adopt when already
   using the preferred ASM protocol options there (PIM-SM).

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 "Key words for use in
   RFCs to Indicate Requirement Levels" [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 January 3, 2019.

Abrahamsson, et al.      Expires January 3, 2019                [Page 1]
Internet-Draft         Deprecating Interdomain ASM             July 2018

Copyright Notice

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Multicast routing protocols . . . . . . . . . . . . . . . . .   3
     2.1.  ASM routing protocols . . . . . . . . . . . . . . . . . .   4
     2.2.  SSM Routing protocols . . . . . . . . . . . . . . . . . .   5
   3.  Discussion  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Observations on ASM and SSM deployments . . . . . . . . .   5
     3.2.  Advantages of SSM for interdomain multicast . . . . . . .   6
   4.  Recommendations . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Deprecating use of ASM for interdomain multicast  . . . .   7
     4.2.  Including network support for IGMPv3 / MLDv2  . . . . . .   8
     4.3.  Building application support for SSM  . . . . . . . . . .   8
     4.4.  Preferring SSM applications intradomain . . . . . . . . .   9
     4.5.  Documenting common practices for SSM support in
           applications. . . . . . . . . . . . . . . . . . . . . . .   9
     4.6.  Documenting an ASM/SSM protocol mapping mechanism . . . .  10
     4.7.  Not filtering ASM addressing between domains  . . . . . .  10
     4.8.  Not precluding Intradomain ASM  . . . . . . . . . . . . .  10
   5.  Congestion Control Considerations . . . . . . . . . . . . . .  11
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  11
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14
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