Re: [tsvwg] FQ & VPNs

Ingemar Johansson S <ingemar.s.johansson@ericsson.com> Sun, 21 February 2021 19:24 UTC

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From: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
To: Jonathan Morton <chromatix99@gmail.com>, Tom Henderson <tomh@tomh.org>
CC: Dave Taht <dave.taht@gmail.com>, TSVWG <tsvwg@ietf.org>
Thread-Topic: [tsvwg] FQ & VPNs
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Subject: Re: [tsvwg] FQ & VPNs
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Jonathan.
Please read
https://tools.ietf.org/html/rfc8311
/Ingemar

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________________________________
Från: Jonathan Morton <chromatix99@gmail.com>
Skickat: söndag, februari 21, 2021 8:10 em
Till: Tom Henderson
Kopia: Dave Taht; Ingemar Johansson S; TSVWG
Ämne: Re: [tsvwg] FQ & VPNs

> On 21 Feb, 2021, at 8:56 pm, Tom Henderson <tomh@tomh.org> wrote:
>
> 1) upstream a patch to the Linux kernel (and ask other OS vendors to do similarly) to treat ECT(1) as not-ECT
> 2) later add options to enable alternative semantics of ECT(1)
>
> I don't see any reason to postpone the first step.

I do.

RFC-3168 specifies that routers "treat ECT(0) and ECT(1) as equivalent".  So implementing this first step would cause these Linux AQMs to violate RFC-3168.  I'm sure the kernel maintainers will be justified in rejecting patches on that basis.  Certainly I would raise such objections were such a patch to come to my attention.

To make that objection go away, you must first update and obsolete RFC-3168 so that it no longer contains that requirement.  That requires convincing the IETF that it's a good idea.  Again, I will maintain that it is a spectacularly bad idea.

 - Jonathan Morton