A new IETF working group has been proposed in the Internet Area. The IESG has not made any determination as yet. The following draft charter was submitted, and is provided for informational purposes only. Please send your comments to the IESG mailing list (iesg@ietf.org) by Tuesday, August 25, 2009. Mobility Multicast (multimob) ------------------------------- Current Status: Proposed Working Group Last Modified: 2009-08-07 Chairs: TBD Internet Area (int) Directors: Jari Arkko <jari.arkko@piuha.net> Ralph Droms <rdroms@cisco.com> Internet Area Advisor: Jari Arkko <jari.arkko@piuha.net> Mailing Lists: General Discussion: multimob@ietf.org Subscribe online at: https://www1.ietf.org/mailman/listinfo/multimob Description of Working Group The Multicast mobility (multimob) working group provides guidance for supporting multicast in a mobile environment. The scope of work will be limited to Proxy Mobile IPv6, MLD/IGMP protocols and listener mobility. Work requiring modifications to mobility protocols, MLD/IGMP, and multicast routing protocols is out of scope in this first stage of this working group. Specific goals are: - Document how multicast can be supported in a Proxy Mobile IPv6 environment - Document the configuration of IGMP/MLD in mobile environments The Proxy Mobile IPv6 (PMIPv6) specification as defined in RFC 5213 does not describe how to support multicast. Some forms of multicast support can, however, be built in the involved nodes by using existing capabilities of multicast protocols and the underlying mobility protocols. The first task of the working group is to document such solutions for PMIPv6. This work will not require any additions or changes to message types and parameters specified in RFC 5213, and will assume an unmodified mobile host. The work will employ the remote subscription model. This is mechanism by which a mobile node joins a multicast group and receives multicast data forwarded via the local mobility anchor. IGMPv3/MLDv2 has been specified for wired networks with shared links. Mobile nodes have needs that are specific to wireless networks and mobility (e.g. entering a dormant mode to conserve battery power, minimizing the latency for joining and leaving a group in support of movement). The second task of the WG is to assess existing solutions for group management, and determine to what extent these methods are sufficient in a mobile environment. This will include recommending appropriate selection of timer values and protocol parameters. In performing its work, the working group will work closely with both the mobility community (NETLMM and NETEXT WGs) and the multicast community (MBONED WG). The group will consider both source specific multicast and any source multicast multicast models. Future work, subject to rechartering, may study/evaluate extensions to support PMIPv6 optimizations to address the avalanche problem and fast handover and extensions to IGMPv3/MLDv2 to support better operation in mobile environments. Milestones: Nov 2009 Initial version of a document explaining the use of multicast in PMIPv6 Nov 2009 Initial version of a document on how to tune IGMP/MLD for mobility Feb 2010 Submit a document explaining the use of multicast in PMIPv6, for publication as either Informational or Best Current Practice Feb 2010 Submit a document on how to tune IGMP/MLD for mobility, for publication as either Informational or Best Current Practice Mar 2010 Recharter for additional optimization work involving extensions to PMIPv6, IGMPv3, or MLDv2 _______________________________________________ IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
