Re: [tsvwg] A word for "does not have a significantly negative impact on traffic using standard congestion control"?

Neal Cardwell <> Tue, 09 March 2021 02:35 UTC

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From: Neal Cardwell <>
Date: Mon, 08 Mar 2021 21:35:32 -0500
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To: Bob Briscoe <>
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Subject: Re: [tsvwg] A word for "does not have a significantly negative impact on traffic using standard congestion control"?
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On Mon, Mar 8, 2021, 8:19 PM Bob Briscoe <> wrote:

> tsvwg-ers,
> In the survey of the L4S Prague Requirements, we got quite significant
> push-back from developers about our two requirements to fall back to
> Reno-Friendly (which the draft defines as a translation of 'TCP-Friendly'
> into transport-agnostic language, 'cos TCP isn't the only transport these
> days).
> Basically, people don't want to have to fall back to something as lame a
> Reno (apologies if that's disparaging, but I'm just the messenger).
> I was hoping people would interpret 'Reno-Friendly' liberally. But
> everyone takes Reno-Friendly to mean quite close to Reno behaviour - not
> surprising really, given the definition of TCP-Friendly in TFRC is roughly
> within 2x of Reno [RFC5348] (pasted at the end).
> What I'm looking for is a word that means "does not have a significantly
> negative impact on traffic using standard congestion control", which
> RFC5033 allows for experimental congestion controls.