IETF Logo Mail Archive

Re: [tsvwg] SCE / L4S and fragmentation

Jonathan Morton <chromatix99@gmail.com> Sun, 15 March 2020 23:36 UTC

Return-Path: <chromatix99@gmail.com>
X-Original-To: tsvwg@ietfa.amsl.com
Delivered-To: tsvwg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B997A3A1E34 for <tsvwg@ietfa.amsl.com>; Sun, 15 Mar 2020 16:36:00 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.848
X-Spam-Level:
X-Spam-Status: No, score=-1.848 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sEhcumgkT7VD for <tsvwg@ietfa.amsl.com>; Sun, 15 Mar 2020 16:35:59 -0700 (PDT)
Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 588C73A1E32 for <tsvwg@ietf.org>; Sun, 15 Mar 2020 16:35:59 -0700 (PDT)
Received: by mail-lj1-x22e.google.com with SMTP id e18so16580838ljn.12 for <tsvwg@ietf.org>; Sun, 15 Mar 2020 16:35:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=6Iw5THz77J4FTb26mT3F2ywAJL6QXuCMl6pSyHyRxMA=; b=OkoCX2uoKyYfp0E8WAfIqIuDo3bejZFMpgwmBX3Vp9/DwzYOm+zlrP/oTaiNBjLM3a qXwgIJ8CpIktuQ898hJO0QbsQT9rqlePZdl97FEwbrtTjYj7/0sj+w/Vtg5yOx2pCrgY B+qMRU0KfpNaE8GSRqiLR7VCDlIyuN2aI66sULP6p4uBV9m5tv6cgFZ/AdVt2Ic+A06i VUr/p7HTFoVSG2cTKAHTKgLWriPQZIkyNnyMCKt3AqNgLJeVfy26Sv7ObctLUCncIUXJ lF2dKde5HoliyFt/bYjhEY5sIj0jWAkzK3BE3QBK93Fa0Lh2qqtHrFDAqpzJwhaytuXK 3Jsg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=6Iw5THz77J4FTb26mT3F2ywAJL6QXuCMl6pSyHyRxMA=; b=Ox37MwUtftmCcYT10ZNvzzlpdEOlMFWahAYbhE4+3umNKLkOG4iIgmNG4Fb3NeHTaS NZv80h/gtP/HKKNmMaSzHmUNzsd0AwOjcflzkTzwRtNe+k7c89i+uDt94wFLGSQzAY2w HtPEBPtVSv2EtUL7I6BAn8Sar3mCW36cq9q8ya9ZH0QzgBtLEm+3rP0uOdssPHMHNYER fRGZnW3AZF4W9STlXUO4xvuTa5YR5Ek8kT0g2IFMQO1clWZL08ccqS2E1gKSHAITZsBb TgrGWJA7pMkZM6a22YlkRsMDaNSNmnGZTuwrWBCpOV2LSq5yYT8ZJkp8R0ThPfI6ctrF V3Ng==
X-Gm-Message-State: ANhLgQ2gXVfLhXfOIVb8R6f6KQcIU5zzNxu6WRBuCENDqt2ahz4mQNaL U5dfID+HQyu6rPlG0xNNggeMTOqL
X-Google-Smtp-Source: ADFU+vuoQwaIWayLTqTfI5UE1Tz/PwtBb1EbBaAR2q1mbchYq5NMb6xstnLWEVsNnz117MGIHzq49A==
X-Received: by 2002:a2e:97d7:: with SMTP id m23mr13412773ljj.122.1584315357515; Sun, 15 Mar 2020 16:35:57 -0700 (PDT)
Received: from jonathartonsmbp.lan (83-245-250-250-nat-p.elisa-mobile.fi. [83.245.250.250]) by smtp.gmail.com with ESMTPSA id j124sm700838lfj.27.2020.03.15.16.35.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 15 Mar 2020 16:35:56 -0700 (PDT)
Content-Type: text/plain; charset="us-ascii"
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
From: Jonathan Morton <chromatix99@gmail.com>
In-Reply-To: <4cff9283-a5d9-b398-0f59-a15c990caad9@bobbriscoe.net>
Date: Mon, 16 Mar 2020 01:35:54 +0200
Cc: "tsvwg@ietf.org" <tsvwg@ietf.org>, "Black, David" <David.Black@dell.com>
Content-Transfer-Encoding: quoted-printable
Message-Id: <E03D6230-5CD1-4630-871E-E85D687326D4@gmail.com>
References: <CE03DB3D7B45C245BCA0D24327794936306F8925@MX307CL04.corp.emc.com> <2873ab79-19ad-0541-e3a4-d1d28dbc7ba0@bobbriscoe.net> <B6D58310-41E0-4172-B555-D28E7926A0B5@gmail.com> <f0a789a0-8bb8-11d9-e8f1-c0570e959151@bobbriscoe.net> <31C0056E-642C-46C0-A247-417BA16FAA3C@gmail.com> <efe9f032-b71e-2b5e-c164-7d7224c433ea@bobbriscoe.net> <1B38148E-11DF-473B-843A-506443B29982@gmail.com> <4cff9283-a5d9-b398-0f59-a15c990caad9@bobbriscoe.net>
To: Bob Briscoe <ietf@bobbriscoe.net>
X-Mailer: Apple Mail (2.3445.9.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/tsvwg/Kwn2zdW5o6SKzN5pWAdepGF_lNk>
Subject: Re: [tsvwg] SCE / L4S and fragmentation
X-BeenThere: tsvwg@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Transport Area Working Group <tsvwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tsvwg/>
List-Post: <mailto:tsvwg@ietf.org>
List-Help: <mailto:tsvwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 15 Mar 2020 23:36:01 -0000

Isolating one key point:

> On 15 Mar, 2020, at 8:14 pm, Bob Briscoe <ietf@bobbriscoe.net> wrote:
> 
> I (and David Black) have argued that a separate draft is needed to update fragment reassembly in RFC3168. Can you please accept that we are not going to update ECN fragmentation and reassembly in rfc6040update-shim. Then it can unblock and be published.
> 
> rfc6040update-shim is meant to be about encap and decap. It would allow this draft to become unstuck if it just said fragmentation and re-assembly is out of scope (which it is). 

I have said several times in the past few days that I agree with that approach, and I'm sure David Black is well aware of that.

However, the -10 revision (which appears to be current) still contains the section and some language covering fragmentation and reassembly.  To be consistent with this approach, you need to update it to simply refer to RFC-3168 for the relevant semantics.  Then I think it will be possible to make progress.

We can discuss separately what, if anything, should be done to RFC-3168 on this topic.

 - Jonathan Morton

v2.23.0 | Report a Bug | By Email