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Re: [AVT] RTP: Note regarding SSM
Dear Stephen;
On Tuesday, January 7, 2003, at 06:20 PM, Stephen Casner wrote:
One of the IESG comments (this one from Harald Alvestrand) was a
request to add the following "non-normative note" at the end of
Section 6 where RTCP is introduced (i.e., just before 6.1). Does
anyone object?
Non-normative note: In the multicast routing approach
called Source-Specific Multicast (SSM), only one or a few
I do not like "a few" here. There is one sender per channel. True, there
can be multiple channels, but then it is not limited to "a few", and, of
course,
there is nothing stopping the receivers from sending on their own
channel.
I would change this sentence to
In the multicast routing approach called Source-Specific Multicast
(SSM), there is only
one sender per "channel" (source - group pair), and receivers cannot use
multicast
to communicate directly with other channel members.
senders send multicast data, and receivers may not send
multicast. The recommendations here accommodate SSM only
through Section 6.2's option of turning off receivers' RTCP
entirely. Future work will specify adaptation of RTCP for
SSM so that feedback from receivers can be maintained.
-- Steve
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Regards
Marshall Eubanks
T.M. Eubanks
Multicast Technologies, Inc.
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624 Fax : 703-293-9609
e-mail : tme@multicasttech.com
http://www.multicasttech.com
Test your network for multicast :
http://www.multicasttech.com/mt/
Status of Multicast on the Web :
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_______________________________________________
Audio/Video Transport Working Group
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