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

[Sebastian Moeller <[e-mail]>]

Hi ingemar,

let's take your "let it age out" proposal at face value. How long do you estimate will it take for those problematic nodes to age out of the system after the IETF has signaled that rfc3168 has changed?
And let's assume you come up with a number of X years, are you really willing to put the L4S experiment on hold until that time has passed?

Unless the answer to that question is YES, let's just drop this proposal, okay? This is not a path to a productive discussion/outcome.

Best Regards
	Sebastian



> On Mar 28, 2021, at 22:03, Ingemar Johansson S <[e-mail]> wrote:
> 
> Hi
> See below [IJ]
> 
>> -----Original Message-----
>> From: Jonathan Morton <[e-mail]>
>> Sent: den 28 mars 2021 21:34
>> To: Ingemar Johansson S <[e-mail]>
>> Cc: Sebastian Moeller <[e-mail]>; Pete Heist <[e-mail]>; Kyle
>> Rose <[e-mail]>; C. M. Heard <[e-mail]>; De Schepper,
>> Koen (Nokia - BE/Antwerp) <[e-mail]>; tsvwg
>> IETF list <[e-mail]>
>> Subject: Re: [tsvwg] L4S DSCP (was: L4S drafts: Next Steps)
>> 
>>> On 28 Mar, 2021, at 10:01 pm, Ingemar Johansson S
>> <[e-mail]> 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