Re: [tsvwg] Adoption call: draft-fairhurst-tsvwg-datagram-plpmtud-02 to end 10th January 2018

Joe Touch <touch@strayalpha.com> Thu, 25 January 2018 15:35 UTC

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Subject: Re: [tsvwg] Adoption call: draft-fairhurst-tsvwg-datagram-plpmtud-02 to end 10th January 2018
From: Joe Touch <touch@strayalpha.com>
In-Reply-To: <FAF66B62-B39F-47E6-AE11-9380F45EE722@in-panik.de>
Date: Thu, 25 Jan 2018 07:34:38 -0800
Cc: Tom Jones <tom@erg.abdn.ac.uk>, Gorry Fairhurst <gorry@erg.abdn.ac.uk>, "tsvwg@ietf.org" <tsvwg@ietf.org>, Christian Huitema <huitema@huitema.net>, Michael Tuexen <michael.tuexen@lurchi.franken.de>, =?utf-8?Q?Mikkel_Fahn=C3=B8e_J=C3=B8rgensen?= <mikkelfj@gmail.com>, QUIC WG <quic@ietf.org>
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To: "Philipp S. Tiesel" <phils@in-panik.de>
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> On Jan 25, 2018, at 5:00 AM, Philipp S. Tiesel <phils@in-panik.de> wrote:
> 
> 
> 
>> On 25. Jan 2018, at 11:40, Tom Jones <tom@erg.abdn.ac.uk <mailto:tom@erg.abdn.ac.uk>> wrote:
>> ...
>> Thanks for the comment, this is an interesting approach we probably need
>> some discussion of the probe size search algorithm in the draft. 
> 
> Ack; – I think the main question is whether you want a generic
> algorithm or something that is optimised for today’s Internet,
> but also somehow works otherwise.

1) we should have a generic algorithm that should be applicable across all PLPMTUD variants, unless there are specific reasons otherwise. This is a wheel that should not be reinvented for each packetization layer protocol.

2) whatever you *think* “today’s Internet is”, you’re wrong today and you’ll be very wrong in the future. Design to work well in most environments most of the time, and you’ll have “optimized” for the most important case for the Internet - ubiquity and longevity.

Joe