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
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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
Local Mobility Anchor (LMA) and Mobile Access Gateways (MAGs), are
responsible for managing IP mobility on behalf of the mobile node
(MN).
With these entities in place, the mobile node experiences an
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