Re: [AVTCORE] WGLC on draft-ietf-avtcore-rtp-multi-stream-optimisation-06 - my comments

"Roni Even" <ron.even.tlv@gmail.com> Mon, 28 September 2015 16:55 UTC

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From: "Roni Even" <ron.even.tlv@gmail.com>
To: "'Colin Perkins'" <csp@csperkins.org>
References: <010801d0f7ae$88fbfc10$9af3f430$@gmail.com> <72523F90-D312-4048-B326-BE2901B37A09@csperkins.org> <019801d0f9fd$965e50f0$c31af2d0$@gmail.com> <D664E81F-D41C-4D20-830E-7B13CB66B808@csperkins.org>
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Date: Mon, 28 Sep 2015 19:55:40 +0300
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Subject: Re: [AVTCORE] WGLC on draft-ietf-avtcore-rtp-multi-stream-optimisation-06 - my comments
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Hi Colin,
I think it may be due to the question how many RR reports and how many packets. Section 4.1 talk about packets


"consider a  scenario in which the two endpoints in a session each have a hundred
   sources, of which eight each are sending within any given reporting
   interval."
  " In a report interval in this scenario, there will, as a baseline, be
   200 SDES packets, 184 RR packets, and 16 SR packets."



Roni

-----Original Message-----
From: Colin Perkins [mailto:csp@csperkins.org] 
Sent: Monday, September 28, 2015 6:10 PM
To: Roni Even
Cc: avt@ietf.org
Subject: Re: [AVTCORE] WGLC on draft-ietf-avtcore-rtp-multi-stream-optimisation-06 - my comments

> On 28 Sep 2015, at 15:54, Roni Even <ron.even.tlv@gmail.com> wrote:
> 
> Hi,
> Inline,
> Roni
> 
> -----Original Message-----
> From: Colin Perkins [mailto:csp@csperkins.org] 
> Sent: Monday, September 28, 2015 4:52 PM
> To: Roni Even
> Cc: avt@ietf.org
> Subject: Re: [AVTCORE] WGLC on draft-ietf-avtcore-rtp-multi-stream-optimisation-06 - my comments
> 
> Hi,
> 
>> On 25 Sep 2015, at 17:23, Roni Even <ron.even.tlv@gmail.com> wrote:
>> 
>> Hi,
>> The document looks OK
>> Some comments and nits
>> 
>> 1.       In section 1 “Consider a session  comprising ten participants, each sending three media streams with  their own SSRC.  There will be 30 SSRCs in such an RTP session, and
>>   30 RTCP reception reports will be sent per reporting interval as each  SSRC reports on all the others.” Are there 30 RTCP reception reports or 270 if all 10 see all the session?  
>> 
> 
> Each of the 30 SSRCs will send an RTCP Sender Report/Receiver Report packet. Each of those packets will contain several report blocks. I’ll try to clarify the text.
> 
> RE:  My understanding that without grouping as also in the example in section 4.1 each SSRC will send 27 RTCP SR/RR since it need to send to each SSRC he received from and he gets 27. Again this depends on the topology.

Each SSRC will send an SR/RR packet. That SR/RR packets includes reports on all 30 SSRCs.

-- 
Colin Perkins
https://csperkins.org/