Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-circuit-breakers-03.txt
Colin Perkins <csp@csperkins.org> Thu, 18 July 2013 15:20 UTC
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From: Colin Perkins <csp@csperkins.org>
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Date: Thu, 18 Jul 2013 16:19:51 +0100
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Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-circuit-breakers-03.txt
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This is a relatively minor update, based on comments received during the last meeting. Changes include: - In Section 4.3, reorder the text to be clearer that the sender is allowed to reduce it's sending rate by a factor of ten when the congestion circuit breaker fires, to see if this resolves the problem, before it has to cease transmission. - In Section 4.2 and Section 4.3, add some text about sessions with a large enough number of media streams that the receivers has to generate round-robin RTCP reception reports. - In Section 4.3, clarify what RTCP reporting interval is used to trigger the circuit breaker - Add Section 7 on the Impact of RTCP Reporting Groups. There are also some minor editorial fixes. Colin On 15 Jul 2013, at 19:55, Internet-Drafts@ietf.org wrote: > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Audio/Video Transport Core Maintenance Working Group of the IETF. > > Title : Multimedia Congestion Control: Circuit Breakers for Unicast RTP Sessions > Author(s) : Colin Perkins > Varun Singh > Filename : draft-ietf-avtcore-rtp-circuit-breakers-03.txt > Pages : 17 > Date : 2013-07-15 > > Abstract: > The Real-time Transport Protocol (RTP) is widely used in telephony, > video conferencing, and telepresence applications. Such applications > are often run on best-effort UDP/IP networks. If congestion control > is not implemented in the applications, then network congestion will > deteriorate the user's multimedia experience. This document does not > propose a congestion control algorithm; instead, it defines a minimal > set of RTP "circuit-breakers". Circuit-breakers are conditions under > which an RTP sender needs to stop transmitting media data in order to > protect the network from excessive congestion. It is expected that, > in the absence of severe congestion, all RTP applications running on > best-effort IP networks will be able to run without triggering these > circuit breakers. Any future RTP congestion control specification > will be expected to operate within the constraints defined by these > circuit breakers. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-avtcore-rtp-circuit-breakers > > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-ietf-avtcore-rtp-circuit-breakers-03 > > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-rtp-circuit-breakers-03 > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > _______________________________________________ > Audio/Video Transport Core Maintenance > avt@ietf.org > https://www.ietf.org/mailman/listinfo/avt -- Colin Perkins http://csperkins.org/
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- Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-… Colin Perkins