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Re: [MMUSIC] ICE-bis: pacing of ICE connectivity checks

Justin Uberti <juberti@google.com> Fri, 18 October 2013 18:35 UTC

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References: <526147C3.9040204@ericsson.com> <CAPvvaa+8osKGTNCS6RJywS9Bmf+RdbnChN=XqA9d+gLnBBAGow@mail.gmail.com> <5261704B.9090307@nostrum.com>
From: Justin Uberti <juberti@google.com>
Date: Fri, 18 Oct 2013 11:34:49 -0700
Message-ID: <CAOJ7v-0dFsd1jxkaMMMAx36ezLex7tTWvy8XnDS8Ak26roz8Xw@mail.gmail.com>
To: Adam Roach <adam@nostrum.com>
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Cc: Ari Keränen <ari.keranen@ericsson.com>, mmusic <mmusic@ietf.org>
Subject: Re: [MMUSIC] ICE-bis: pacing of ICE connectivity checks
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FWIW, we are now doing trials to understand what is the absolute lower
bound for ICE checks on today's internet (i.e. what is the minimum time to
allow for a NAT to create a new UDP binding).


On Fri, Oct 18, 2013 at 10:30 AM, Adam Roach <adam@nostrum.com> wrote:

>  On 10/18/13 09:44, Emil Ivov wrote:
>
> It might be worth reminding exactly what these 50ms would be
> protecting us against
>
>
> They're protecting us against RTP arriving at a rate of 20ms per packet.
>
>
>  and why is it that we don't need to be
> protected against it in the case of RTP where 20ms is accepted as a
> fine default value.
>
>
> Well, it's not. This is exactly why we ended up requiring ICE: it ensures
> explicit consent before you start blowing media at someone.
>
> See also http://www.ietf.org/mail-archive/web/mmusic/current/msg04589.html
>
> /a
>
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> mmusic@ietf.org
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