Re: [tsvwg] plan for L4S issue #29

Jonathan Morton <chromatix99@gmail.com> Wed, 23 September 2020 20:12 UTC

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From: Jonathan Morton <chromatix99@gmail.com>
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Date: Wed, 23 Sep 2020 23:12:33 +0300
Cc: Bob Briscoe <ietf@bobbriscoe.net>, Wesley Eddy <wes@mti-systems.com>, "tsvwg@ietf.org" <tsvwg@ietf.org>
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To: Sebastian Moeller <moeller0@gmx.de>
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Subject: Re: [tsvwg] plan for L4S issue #29
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> On 23 Sep, 2020, at 11:00 pm, Sebastian Moeller <moeller0@gmx.de> wrote:
> 
>> We had a consensus call in April,
> 
> 	[SM] Did we? As far as I remember the decision back then was always a "vote" of confidence for L4S over SCE, to make team L4S continue with the experient, but it did not (even try to) answer the question whether L4S is ready for deployment.

It was a consensus call over whether ECT(1) should have input or output semantics, which is a somewhat different (though related) question than "L4S vs SCE".  Regardless of any subsequent spin, it ended with no consensus established for any single option presented.

It was also established at the same time that L4S in its current form was *not* sufficiently robust for deployment, and thus unlikely to succeed if forwarded to later stages of the IETF standardisation process.  That was not merely the opinion of myself and others in my "camp", so to speak, but was explicitly stated by the Chairs.  An opportunity was given for L4S to undergo further development with the aim of resolving these concerns.

If any concrete progress has been made in that direction, I have not yet seen it.  But then, Bob has apparently been out of the loop for a while.  In that context, perhaps he will consider the above a friendly memory refreshment exercise.

Of course, if I have somehow got this wrong, I'll hear corrections.

 - Jonathan Morton