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Re: [MMUSIC] Mod to draft-ietf-mmusic-rfc2326bis-40

Flemming Andreasen <fandreas@cisco.com> Tue, 20 January 2015 21:32 UTC

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Date: Tue, 20 Jan 2015 16:32:26 -0500
From: Flemming Andreasen <fandreas@cisco.com>
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To: "Schwarz, Albrecht (Albrecht)" <albrecht.schwarz@alcatel-lucent.com>, Christian Groves <Christian.Groves@nteczone.com>, mmusic mailing list <mmusic@ietf.org>, Roni Even <ron.even.tlv@gmail.com>
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Subject: Re: [MMUSIC] Mod to draft-ietf-mmusic-rfc2326bis-40
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We'll probably need to hear from Magnus as well (since he's the main 
author). I'm not sure if he is back from leave yet or not.

Thanks

-- Flemming

On 1/14/15 3:55 AM, Schwarz, Albrecht (Albrecht) wrote:
> No objections from my side because the requirement as such is still sufficiently covered.
> Thus, would support that change proposal.
> -Albrecht
>
> -----Original Message-----
> From: mmusic [mailto:mmusic-bounces@ietf.org] On Behalf Of Christian Groves
> Sent: Mittwoch, 14. Januar 2015 03:10
> To: mmusic mailing list; Roni Even
> Subject: [MMUSIC] Mod to draft-ietf-mmusic-rfc2326bis-40
>
> Hello,
>
> draft-ietf-mmusic-rfc2326bis-40
> <https://datatracker.ietf.org/doc/draft-ietf-mmusic-rfc2326bis/> has been in state MISSREF for some time now. See below:
>
> 2014-02-11    draft-ietf-mmusic-rfc2326bis-40.txt [C214]
> MISSREF*R(1G)
> REF    draft-ietf-avtcore-rtp-circuit-breakers    NOT-RECEIVED
>       draft-ietf-mmusic-rtsp-nat    IN-QUEUE
> H. Schulzrinne, A. Rao, R. Lanphier, M. Westerlund, M. Stiemerling, Ed.
> "Real Time Streaming Protocol 2.0 (RTSP)"
> Bytes: 764018
> Working Group: Multiparty Multimedia Session Control
>
> There is still a dependency on draft-ietf-avtcore-rtp-circuit breakers which is holding up an RFC number being assigned. My understanding is that it could be quite awhile before the circuit breakers draft is approved.
>
> There's only one reference to the circuit breakers draft in C.1.6.3 "Bit-rate adaption", i.e.
>      To ensure that the implementation's adaptation mechanism has a well
>      defined outer envelope, all implementations using a non-congestion
>      controlled unicast transport protocol, like UDP, MUST implement
>      Multimedia Congestion Control: Circuit Breakers for Unicast RTP
>      Sessions [I-D.ietf-avtcore-rtp-circuit-breakers].
>
> I wondering if it would be possible to change this slightly so that the circuit breakers draft becomes informative whilst still keeping the congestion control requirement as a MUST? i.e.
> "... all implementations using a non-congestion controlled unicast transport protocol, like UDP, MUST implement multimedia congestion control. For example: by utilising the mechanism defined by "Multimedia Congestion Control: Circuit Breakers for Unicast RTP Sessions [I-D.ietf-avtcore-rtp-circuit-breakers]."
>
> This would mean that RTSP2.0 could finally become an RFC.
>
> Would this be possible?
>
> Regards,
> Christian
>
>
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