RE: [AVT] Review draft-ietf-avt-avpf-ccm-07

"Even, Roni" <roni.even@polycom.co.il> Sun, 08 July 2007 14:01 UTC

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Subject: RE: [AVT] Review draft-ietf-avt-avpf-ccm-07
Date: Sun, 08 Jul 2007 17:03:46 +0300
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Thread-Topic: [AVT] Review draft-ietf-avt-avpf-ccm-07
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From: "Even, Roni" <roni.even@polycom.co.il>
To: Randell Jesup <rjesup@wgate.com>
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Randell,
Thanks, you are right about the parameter. 

I assume that the default of infinity to this parameter make sense. This
parameter is not important for a unicast point to point call where the
MTU is fixed but for multiple receivers that may have different path MTU
sizes and different overhead.

Roni



> -----Original Message-----
> From: Randell Jesup [mailto:rjesup@wgate.com]
> Sent: Sunday, July 08, 2007 4:35 PM
> To: Even, Roni
> Cc: avt@ietf.org; Magnus Westerlund; bo.burman@ericsson.com;
> stewe@stewe.org; avt-chairs@tools.ietf.org
> Subject: Re: [AVT] Review draft-ietf-avt-avpf-ccm-07
> 
> "Even, Roni" <roni.even@polycom.co.il> writes:
> >Packet per second is not a precise number for video. It is also
> >dependent on MTU size and how the sender breaks a big frame to
packets
> >smaller than MTU size.
> 
> Sure, actual packet rate is dependant on a lot of things.  But
(correct me
> if I'm wrong) SMAXPR is how you signal a maximum packet rate for use
in
> the
> TMMBR algorithm above, and so should be in some variation of packets
per
> unit time, and my assumption is that we don't need any higher
resolution
> than integer packets per second.
> 
> I don't understand how it could be in bits per second...
> 
> >> "Even, Roni" <roni.even@polycom.co.il> writes:
> >> >5. in section 7.1 " MaxPacketRateValue = 1*15DIGIT" what are the
units
> >> >   for this parameter. I think that based on the example it is in
> >> >   1000's of bits per second but please clarify.
> >> >Fix the value in example 3 based on the units, currently it say
120
> and
> >> >I assumed 120*1000 bits/s
> >>
> >> I'd assume that's in packets-per-second, but it should be spelled
out.
> 
> --
> Randell Jesup, Worldgate (developers of the Ojo videophone), ex-Amiga
OS
> team
> rjesup@wgate.com
> "The fetters imposed on liberty at home have ever been forged out of
the
> weapons
> provided for defence against real, pretended, or imaginary dangers
from
> abroad."
> 		- James Madison, 4th US president (1751-1836)


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