2.6.9 Protocol Independent Multicast (pim)

NOTE: This charter is a snapshot of the 70th IETF Meeting in Vancouver, BC Canada. It may now be out-of-date.

Last Modified: 2007-04-02


Tom Pusateri <pusateri@bangj.com>
Mike McBride <mmcbride@cisco.com>

Routing Area Director(s):

Ross Callon <rcallon@juniper.net>
David Ward <dward@cisco.com>

Routing Area Advisor:

David Ward <dward@cisco.com>

Mailing Lists:

General Discussion: pim@ietf.org
To Subscribe: http://www1.ietf.org/mailman/listinfo/pim/
Archive: http://www.ietf.org/mail-archive/web/pim/index.html

Description of Working Group:

The Protocol Independent Multicast (PIM) Working Group is chartered to
standardize and promote the Protocol Independent Multicast Version 2
(PIMv2), Sparse Mode and Dense Mode, as a scalable, efficient and
multicast routing protocol, capable of supporting thousands of groups,
different types of multicast applications, and all major underlying
layer-2 subnetwork technologies. The working group will decide if
is a need  for any follow on work or version 3 of the protocol.

This working group will act as a consultant to any PIM-over-Foo
proposals, including but not limited to PIM-over-ATM, using PIM for
multiprotocol label switching, and PIM-over-UDLR links.


1) PIM-SM v2 specification (standards track)

    This document is a specification for Sparse Mode Protocol
    Independent Multicast.

2) PIM-DM v2 speficication (standards track)

    This document is a specification for Dense Mode Protocol
    Independent Multicast.

3) PIM MIB (standards track)

    This document contains the MIB definitions for PIMv2.

Goals and Milestones:

Done  Hold the first Working Group meeting and discuss the charter and the state of progress on the chartered items.
Done  Update the PIM-DM version 2 Internet-draft. Go to WG last call. Submision to IESG for considerations as proposed standard.
Done  Resubmit the latest PIM-SM version 2 specification to IESG for consideration as a proposed standard RFC
Done  Submit PIM-SM Applicability Statements
Done  Submit PIMv2 MIB to IESG for consideration as proposed standard.
Done  Submit updated PIM-SM and PIM-DM internet-drafts, clarifying any inconsistencies or ambiguities in the previous drafts.
Done  Submit PIM-SM version 2 and PIM-DM version 2 specifications to IESG for consideration as Draft Standards.
Done  Submit PIMv2 MIB to IESG for consideration as draft standard.


  • draft-ietf-pim-bidir-09.txt
  • draft-ietf-pim-sm-bsr-11.txt
  • draft-ietf-pim-mib-v2-10.txt
  • draft-ietf-pim-rpf-vector-04.txt
  • draft-ietf-pim-join-attributes-03.txt
  • draft-ietf-pim-bsr-mib-03.txt
  • draft-ietf-pim-sm-linklocal-01.txt
  • draft-ietf-pim-lasthop-threats-01.txt

    Request For Comments:

    RFC3973 E Protocol Independent Multicast - Dense Mode (PIM-DM): Protocol Specification (Revised)
    RFC4601 PS Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)
    RFC4602 I Protocol Independent Multicast - Sparse Mode (PIM-SM) IETF Proposed Standard Requirements Analysis
    RFC4610 PS Anycast-RP Using Protocol Independent Multicast (PIM)

    Meeting Minutes


    pimgr and pim ping
    improved register
    linklocal security