Source-Specific Multicast (ssm)

Last Modified: 2005-02-15

Additional information is available at tools.ietf.org/wg/ssm

Chair(s):

  • Hugh Holbrook <holbrook@cs.stanford.edu>

  • Supratik Bhattacharya <supratik@sprintlabs.com>

    Routing Area Director(s):

  • Ross Callon <rcallon@juniper.net>
  • Bill Fenner <fenner@research.att.com>

    Routing Area Advisor:

  • Bill Fenner <fenner@research.att.com>

    Mailing Lists:

    General Discussion: ssm@ietf.org
    To Subscribe: ssm-request@ietf.org
    In Body: subscribe
    Archive: http://www.ietf.org/mail-archive/web/ssm/index.html

    Description of Working Group:

    The purpose of the SSM working group is to define source-specific
    multicast in order to provide unambiguous semantics to the designers
    of the protocols and host interfaces used in conjunction with
    source-specific multicast.

    SSM is intended to be a short-lived and highly-focused working group.

    The working group has two specific tasks:

    1) A concise standards-track RFC that clearly defines the
    source-specific multicast model and its relation to RFC 1112
    multicast. This document will specify of the host interfaces to be
    used for source-specific multicast, the rules that hosts, routers, and
    protocols must follow when allocating and using source-specific
    addresses. This document will serve as a reference to RFC authors
    designing protocols and host interfaces that implement SSM.

    2) An informational RFC providing an overview of source-specific
    multicast. This document will serve as a starting point for parties
    interested in source-specific multicast.

    Other SSM-related documents may be taken on as work items by other
    multicast working groups that have more specific expertise, including
    pim, mboned, and magma. For instance, a document describing the use of
    IGMPv3 for SSM has been adopted by MAGMA. The SSM working group chairs
    will cooperate with chairs of the related working groups and the Area
    Directors to determine the appropriate location of SSM-related
    documents that arise during the working group's lifetime.

    Goals and Milestones:

    Done  First meeting
    Done  Submit source-specific multicast model as internet-draft
    Done  Submit I-D for source-specific multicast
    Done  Reach consensus on source-specific multicast model and alloctate address space to source-specific multicast
    Done  Submit I-D on source-specific multicast deployment to IESG for consideration as an Informational RFC
    Done  Submit I-D on source-specific multicast to the IESG for consideration as a standards-track RFC
    Done  Revise and resubmit I-D on source-specific multicast to the IESG for consideration as a standards-track RFC

    No Current Internet-Drafts

    Request For Comments:

    An Overview of Source-Specific Multicast(SSM) (RFC 3569) (29387 bytes)
    Source-Specific Multicast for IP (RFC 4607) (42990 bytes)
    IETF Secretariat - Please send questions, comments, and/or suggestions to ietf-web@ietf.org.

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