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

Ari Keränen <ari.keranen@ericsson.com> Mon, 21 October 2013 12:02 UTC

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Date: Mon, 21 Oct 2013 15:02:44 +0300
From: Ari Keränen <ari.keranen@ericsson.com>
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To: Martin Thomson <martin.thomson@gmail.com>
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Cc: mmusic <mmusic@ietf.org>
Subject: Re: [MMUSIC] ICE-bis: pacing of ICE connectivity checks
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On 10/18/13 7:44 PM, Martin Thomson wrote:
> On 18 October 2013 07:37, Ari Keränen <ari.keranen@ericsson.com> wrote:
>> So, to be "conservative enough", how about 50 ms RECOMMENDED pacing value if there's no better knowledge of the network? And if there is, scale accordingly, but not below 20ms.
>
> I see no reason not to make this 50ms.  20ms might cross the line, but
> I'll let people argue about what is safe below that.  I have done some
> calculations on this and even at 20ms, it's not out of proportion.
> (I'll send a pointer out when I submit the draft later today).

Sounds interesting, looking forward to the pointer.

> A good reason not to have a larger pacing timer is the effect that it
> has on RTO.  For some configurations, the standard formulae lead to
> ICE taking far too long to complete.

Very true.


Cheers,
Ari

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