Minutes of the BOF Meeting Meeting on Negotiated QOS Multicast Communication
(QOSMC)
Orlando, Monday, December 7, 19.30-22.00
By Jack Houldsworth SC6 Internet Rapporteur
Co-Chairs: Jack Houldsworth (Internet Rapporteur for ISO/SC6) and Herbert
Bertine (Chair ITU-T SG7)
Documents: Enhanced Communication Transport Service and Protocol (ECTS and
ECTP):
I-D for ECTS: draft-kim-jtc1-sc6-ects-04.txt
URL for ECTP:
http://pec.etri.re.kr.ects/ectp/#ectp
The co-chairs suggested that ECTP might provide a solution to some known
IETF QoS and Multicast control problems. It was emphasized that the work
is not finalized and that ISO/IEC and the ITU-T would like to co-operate
with the IETF to ensure that that the full problem space is covered.
Alan Chambers (Convenor SC6/WG7) went over the evolutionary history
explaining that ECTP is aimed at providing Enhanced Transport control for
any networking culture, including Ipv4 or Ipv6, without affecting the
applications above it. He explained that ECTP expects to exploit existing
IP protocols, like RSVP.
Professor Kim (SC6/WG7) presented the QoS and Multicast control aspects of
ECTP identifying open questions and suggesting areas where co-operation
could be fruitful.
Wolfgang Fritsche (SC6/WG7) discussed Network Layer Multicast issues and
suggested future co-operation on possible enhancements to IP routing
protocols.
The meeting was attended by around 150 delegates and there were several
questions from the floor asking the speakers to clarify detailed points,
mainly about the scope, and some discussion about scalability for large
multicast groups. Around 20 delegates attended Profesor Kim's ECTP Demo
throughout the following day, Tuesday 8th December, and the level of
interest was reported to be good.
In summing up for the IETF, Scott Bradner (Co-Transport Area Director)
agreed that there are known problems in the areas which had been identified
and if the work is not focused, several groups could invent a variety of
different solutions to the same problem. He suggested that a simple
statement that isolates the problem space filled by ECTP would help him to
identify the areas where the IETF might co-operate.
The co-chairs of the BOF agreed to ensure that this action is covered at
the upcoming collaborative SC6 and SG7 session on ECTS/ECTP in January 1999
in Sydney.
Participants can join the ECTP discussion list <
[email protected]> by
mailing to: <
[email protected] with the message: subscribe
qmc-list<originator address>
The simple document clarifying the problem space will be posted via this
list. The ECTS/ECTP authors will also respond, via this list, to any
questions that arise during the reading of the documents and will welcome
ideas for improvement or widening the scope.
The mood of the meeting was very reassuring. The old rhetoric about ISO
and ITU-T has clearly disappeared and the IETF has clearly moved into a
more co-operative mood. There were no specific actions to set up a new WG
and this might, at first sight, appear to be disappointing. However, the
IETF needs time to digest the details and equate the solution with their
own problems. There will be more discussion with Scott Bradner after SC6
WG7 /ITU-T SG7 have forwarded the statement clarifying applicability to the
IETF. After closer examination, it may be considered that the work would
fit into other WGs, such as MMUSIC.
