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Re: [tsvwg] L4S DSCP (was: L4S drafts: Next Steps)

Ingemar Johansson S <ingemar.s.johansson@ericsson.com> Sun, 28 March 2021 20:03 UTC

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From: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
To: Jonathan Morton <chromatix99@gmail.com>
CC: Sebastian Moeller <moeller0@gmx.de>, Pete Heist <pete@heistp.net>, Kyle Rose <krose@krose.org>, "C. M. Heard" <heard@pobox.com>, "De Schepper, Koen (Nokia - BE/Antwerp)" <koen.de_schepper@nokia-bell-labs.com>, tsvwg IETF list <tsvwg@ietf.org>, Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
Thread-Topic: [tsvwg] L4S DSCP (was: L4S drafts: Next Steps)
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Subject: Re: [tsvwg] L4S DSCP (was: L4S drafts: Next Steps)
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Hi
See below [IJ]

> -----Original Message-----
> From: Jonathan Morton <chromatix99@gmail.com>
> Sent: den 28 mars 2021 21:34
> To: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
> Cc: Sebastian Moeller <moeller0@gmx.de>; Pete Heist <pete@heistp.net>; Kyle
> Rose <krose@krose.org>; C. M. Heard <heard@pobox.com>; De Schepper,
> Koen (Nokia - BE/Antwerp) <koen.de_schepper@nokia-bell-labs.com>; tsvwg
> IETF list <tsvwg@ietf.org>
> Subject: Re: [tsvwg] L4S DSCP (was: L4S drafts: Next Steps)
> 
> > On 28 Mar, 2021, at 10:01 pm, Ingemar Johansson S
> <ingemar.s.johansson@ericsson.com> wrote:
> >
> > All I see is that this RFC3168 AQM is brought up repeatedly, when prompted
> about the possibility that even RFC3168 AQMs can be updated…
> 
> The point here is that even if *some* existing AQMs can be updated easily,
> there will be some which cannot or will not.  These are what you must
> pessimistically take into account when analysing the risk of deploying L4S.  Until
> you absorb that knowledge and start taking it into account, you're not going to
> make any headway.

[IJ] And these that "can or will not.." will then continue to run across the internet 10 years from now ?, 20 years ?.. Network gear is constantly being replaced with the reason being that they either become too old to be economically feasible to maintain or that they just break down. Home gateways breakdown or are just been replaced because they don't meet new demands. You don't normally keep a PC for more than ~5 years for a bunch of reasons. Why would you keep networking gear for decades ?

> 
>  - Jonathan Morton

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