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CURRENT_MEETING_REPORT_
Reported by Steve Deering/Xerox PARC
MOSPF Minutes
Agenda
1. Review John Moy's draft specification of March 4.
2. Discuss outstanding issues:
o Inter-area delivery trees
o Inter-AS delivery trees
o Multicast group scope
3. What next?
o Progress of specification
o Implementations?
o Testing?
Minutes
Most of the meeting was spent on Agenda Item 1, a page-by-page review of
John's latest spec. We agreed to one significant change: to merge the
separate concepts of the ``SPF cache'' and the ``forwarding cache'', and
to refer to the ``local group cache'' as something other than a
``cache'', perhaps a ``list'' or ``table''. There were also a number of
minor or editorial changes suggested, that John will incorporate in the
next draft.
Under Agenda Item 2, we discussed (again) the alternatives for
inter-area and inter-AS routing. The group agreed to the inter-area
scheme proposed by John, which is based on RPF for identifying entry
routers, but using FPF within an area. The inter-AS approach, however,
remained unclear, pending decisions by the BGP Working Group, which is
considering a number of proposals by Scott Brim. Steve and Scott also
described a couple of proposals for adding some sort of scope limits to
group memberships (orthogonal to the use of TTL for scope of multicast
transmissions); possibilities include a scope subfield within an IP
multicast address, or a separate scope parameter in the Join Group
operation (and in the resulting IGMP message). This remains a topic for
future consideration.
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For Agenda Item 3, John agreed to incorporate the suggested changes and
to flesh out the missing sections of the spec, except for those parts
dealing with inter-AS routing, and to make the document available as an
internet draft. Scott and Jeff Honig at Cornell are planning to
implement the OSPF multicast extensions within ``gated'' as time and
resources permit.
Attendees
William Babson bill%penril@uunet.UU.NET
Scott Brim swb@devvax.tn.cornell.edu
Rob Coltun rcoltun@trantor.umd.edu
Steve Deering deering@xerox.com
Barbara Denny denny@sri.com
Kurt Dobbins dobbins@ctron.com
Dino Farinacci dino@3com.com
Dennis Ferguson dennis@canet.ca
Jeffrey Honig jch@devvax.tn.cornell.edu
Anders Klemets klemets@cs.cmu.edu
Michelle Landriault crm57a@bnr.ca
Bill Manning bmanning@houston.sc.ti.com
Greg Minshall minshall@wc.novell.com
John Moy jmoy@proteon.com
Gary Mussar mussar@bnr.ca
David O'Leary oleary@sura.net
Steven Sherry shsherry@eng.xyplex.com
Stephen Shew sdshew@bnr.ca
Frank Solensky solensky@clearpoint.com
Paul Tsuchiya tsuchiya@bellcore.com
Osmund deSouza desouza@osdpc.ho.att.com
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