Re: [MMUSIC] ICE-SIP-SDP: Question on ice-pacing attribute

Roman Shpount <roman@telurix.com> Thu, 18 July 2019 22:03 UTC

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From: Roman Shpount <roman@telurix.com>
Date: Thu, 18 Jul 2019 18:03:03 -0400
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To: Christer Holmberg <christer.holmberg@ericsson.com>
Cc: "mmusic@ietf.org" <mmusic@ietf.org>, "mmusic-chairs@ietf.org" <mmusic-chairs@ietf.org>, Cullen Jennings <fluffy@cisco.com>
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Subject: Re: [MMUSIC] ICE-SIP-SDP: Question on ice-pacing attribute
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On Thu, Jul 18, 2019 at 2:18 AM Christer Holmberg <
christer.holmberg@ericsson.com> wrote:

> Roman, did you have any opinion regarding Q1, whether we should allow to
> indicate pacing values smaller than 50ms?
>

This is a complicated question. On one hand this value was set to avoid
creating remote denial of service attacks using initial ICE connectivity
checks. On the other hand, this value might be too high.

So, my opinion that we should set the minimum pacing and ignore anything
smaller, but the value might be lower 50ms. I think 50 ms value was set to
avoid crashing a specific model of long deceased Linksys router. I remember
Cullen giving a presentation about lower pacing values a while back, so I
copied him on this email.

Best Regards,
_____________
Roman Shpount