Multicast & Anycast Group Membership (magma) -------------------------------------------- Charter Last Modified: 2006-04-18 Current Status: Active Working Group Chair(s): Brian Haberman Isidor Kouvelas Internet Area Director(s): Ralph Droms Jari Arkko Mark Townsley Internet Area Advisor: Jari Arkko Mailing Lists: General Discussion:magma@ietf.org To Subscribe: magma-request@ietf.org In Body: subscribe Archive: http://www.ietf.org/mail-archive/web/magma/index.html Description of Working Group: Group management protocols are crucial to the operation of multicast within the Internet, and there are some benefits in extending group management protocols to also be able to support anycast. These protocols allow hosts to inform routers of their membership status within groups. This working group will be responsible for developing the functionalities required for group membership reporting and other related actions. This group will also address the initial authentication and access control issues associated with anycast group membership; this is likely to be limited to shared secrets and message authentication codes (MACs) much like current routing protocol security. Other aspects of Anycast, including architecture and routing, are outside the groups scope. The draft names listed below are the starting point for the work in the WG. MAGMA specifications will include: - Core IGMPv3/MLDv2 specifications. These specifications will describe the protocol used between hosts and routers to share group membership information. IGMPv3 and MLDv2 build on IGMPv2 and MLDv1 by adding two types of source-specific filtering; "include" (in which the system tells the router exactly which sources it desires) and "exclude" (in which the system tells the router that it does *not* desire a list of sources). - IGMPv3: The IDMR working group has submitted this for Proposed Standard. MAGMA takes ownership after publication as RFC. - MLDv2: draft-vida-mld-v2-00.txt - Multicast Source Filtering API. This specification describes the API used to interact with IGMPv3 and MLDv2 to indicate source filters. - draft-ietf-idmr-msf-api-01.txt - Host determination of network group membership. In a multicast environment, systems may be interested in learning whether or not there are any group members, in order to save the trouble of sending data that nobody is listening to. - Multicast Source Notification of Interest Protocol: draft-ietf-idmr-msnip-00 - Multicast forwarding in tree topologies using IGMP/MLD Proxying - Create a single document from: - draft-ietf-idmr-igmp-proxy-00 - draft-he-mixed-igmp-proxy-00 - Source-Specific Multicast (SSM) consideration document. This work will describe the use of IGMPv3/MLDv2 in an SSM environment. - draft-holbrook-idmr-igmpv3-ssm-01.txt - Considerations for "IGMP snooping" switches (switches that watch IGMP exchanges in order to determine multicast forwarding behavior) - Multicast Router Discovery: The MAGMA group has taken ownership of this draft over from IDMR. It will be revised and submitted as a Proposed Standard. - Snooping Considerations: draft-ietf-magma-mrdisc-00.txt (previous revisions draft-ietf-idmr-snoop-XX.txt) - Group management MIBs - update RFC 2933 for IGMPv3 - update RFC 3019 for MLDv2 - Interaction between IGMP/MLD and routing protocols - draft-ietf-idmr-igmpv3-and-routing-00.txt - Extensions to MLD supporting anycast group memberships including authentication and access control mechanisms - draft-haberman-ipngwg-host-anycast-00.txt In addition, this working group will coordinate with other IETF working groups where multicast and anycast group management protocols are utilized as well as coordinating with the Multicast Security WG. Goals and Milestones: Done Submit IGMPv3/MLDv2 Interfactions with Routing Protocols as Informational Done Submit IGMP/MLD Proxying Specification as Proposed Standard Done Submit IGMP & MLD Snooping Considerations as Informational Done Submit SSM considerations for IGMPv3 & MLDv2 as Proposed Standard Done Submit Multicast Source Filtering API as Informational Done Submit MRD as Proposed Standard Done Submit IGMPv3/MLDv2 MIB as Proposed Standard Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- Jun 2003 Feb 2009 Multicast Group Membership Discovery MIB Request For Comments: RFC Stat Published Title ------- -- ----------- ------------------------------------ RFC3228BCP Feb 2002 IANA Considerations for IGMP RFC3590 PS Sep 2003 Source Address Selection for the Multicast Listener Discovery (MLD) Protocol RFC3678 I Jan 2004 Socket Interface Extensions for Multicast Source Filters RFC3810Standard Jun 2004 Multicast Listener Discovery Version 2 (MLDv2) for IPv6 RFC4286Standard Dec 2005 Multicast Router Discovery RFC4541 I May 2006 Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping Switches RFC4604 PS Aug 2006 Using Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific Multicast RFC4605 PS Aug 2006 Internet Group Management Protocol (IGMP)/ Multicast Listener Discovery (MLD)-Based Multicast Forwarding ( RFC5186 I May 2008 Internet Group Management Protocol Version 3 (IGMPv3) / Multicast Listener Discovery Version 2 (MLDv2) and Multicast Routing Protocol Interaction