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Base Deployment for Multicast Listener Support in Proxy Mobile IPv6 (PMIPv6) Domains
RFC 6224

Internet Engineering Task Force (IETF)                        T. Schmidt
Request for Comments: 6224                                   HAW Hamburg
Category: Informational                                     M. Waehlisch
ISSN: 2070-1721                                     link-lab & FU Berlin
                                                             S. Krishnan
                                                                Ericsson
                                                              April 2011

             Base Deployment for Multicast Listener Support
                 in Proxy Mobile IPv6 (PMIPv6) Domains

Abstract

   This document describes deployment options for activating multicast
   listener functions in Proxy Mobile IPv6 domains without modifying
   mobility and multicast protocol standards.  Similar to home agents in
   Mobile IPv6, Local Mobility Anchors of Proxy Mobile IPv6 serve as
   multicast subscription anchor points, while Mobile Access Gateways
   provide Multicast Listener Discovery (MLD) proxy functions.  In this
   scenario, mobile nodes remain agnostic of multicast mobility
   operations.  Support for mobile multicast senders is outside the
   scope of this document.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6224.

Schmidt, et al.               Informational                     [Page 1]
RFC 6224              Multicast Listeners in PMIPv6           April 2011

Copyright Notice

   Copyright (c) 2011 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
   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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Deployment Details . . . . . . . . . . . . . . . . . . . . . .  8
     4.1.  Operations of the Mobile Node  . . . . . . . . . . . . . .  8
     4.2.  Operations of the Mobile Access Gateway  . . . . . . . . .  8
     4.3.  Operations of the Local Mobility Anchor  . . . . . . . . . 10
     4.4.  IPv4 Support . . . . . . . . . . . . . . . . . . . . . . . 10
     4.5.  Multihoming Support  . . . . . . . . . . . . . . . . . . . 11
     4.6.  Multicast Availability throughout the Access Network . . . 12
     4.7.  A Note on Explicit Tracking  . . . . . . . . . . . . . . . 12
   5.  Message Source and Destination Address . . . . . . . . . . . . 13
     5.1.  Query  . . . . . . . . . . . . . . . . . . . . . . . . . . 13
     5.2.  Report/Done  . . . . . . . . . . . . . . . . . . . . . . . 13
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 13
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 14
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 14
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 15
   Appendix A.  Initial MLD Queries on Upcoming Links . . . . . . . . 16
   Appendix B.  State of IGMP/MLD Proxy Implementations . . . . . . . 16
   Appendix C.  Comparative Evaluation of Different Approaches  . . . 17

Schmidt, et al.               Informational                     [Page 2]
RFC 6224              Multicast Listeners in PMIPv6           April 2011

1.  Introduction

   Proxy Mobile IPv6 (PMIPv6) [RFC5213] extends Mobile IPv6 (MIPv6)
   [RFC3775] by network-based management functions that enable IP
   mobility for a host without requiring its participation in any
   mobility-related signaling.  Additional network entities, called the

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