CURRENT_MEETING_REPORT_

Reported by Steve Deering/ Stanford

Minutes:

This was the second meeting of the Multicast OSPF Working Group.

Steve Deering gave a short presentation on the cost and scaling aspects
of IGMP (the Internet Group Management Protocol, specified in RFC-1112)
and of link-state multicast routing as planned for OSPF. [See the
accompanying slides.]

John Moy presented an outline of the changes and additions required to
the current OSPF specification, to support multicast routing.
Discussion of his outline identified some new concerns and suggestions
regarding:


  o support for multicast routing by only a subset of routers in an
    area and its effect on multicast vs.  unicast reachability,
    selection of designated routers, etc.
  o duplicate multicast packets arising from the support of multiple IP
    subnets on a single physical network.
  o inter-area and inter-AS multicast routing approaches.


It was also pointed out that we will have to come up with formal MIB
definitions covering the additional state and configuration variables
introduced for multicast routing.  No one immediately volunteered for
that job.

Action Items

John Moy to generate a draft of the multicast changes/additions to the
OSPF specification.

Next Meeting

The Multicast OSPF Working Group will next meet in Vancouver, at the
July/August IETF meeting.



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ATTENDEES

   Steven Bruniges
   Duane Butler              [email protected]
   George Clapp              [email protected]
   Rob Coltun                [email protected]
   Steve Deering             [email protected]
   Martin Gross              [email protected]
   Keith Hogan               keith%[email protected]
   Jeff Honig                [email protected]
   Joseph C Lawrence         [email protected]
   Yoni Malachi              [email protected]
   Tony Mason                [email protected]
   Jeff Mogul                [email protected]
   John Moy                  [email protected]
   Stephanie Price           [email protected]
   Jim Showalter             [email protected]
   Michael St. Johns         [email protected]
   Brad Strand               [email protected]
   Kannan Varadhan           [email protected]
   Steven Willis             [email protected]
   Chin Yuan                 [email protected]



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