IETF Logo Mail Archive

Re: Is Fragmentation at IP layer even needed ?

Harald Alvestrand <harald@alvestrand.no> Tue, 09 February 2016 16:51 UTC

Return-Path: <harald@alvestrand.no>
X-Original-To: ietf@ietfa.amsl.com
Delivered-To: ietf@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 966F21ACD2B for <ietf@ietfa.amsl.com>; Tue, 9 Feb 2016 08:51:49 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham
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 X7N6dsh0PavH for <ietf@ietfa.amsl.com>; Tue, 9 Feb 2016 08:51:47 -0800 (PST)
Received: from mork.alvestrand.no (mork.alvestrand.no [IPv6:2001:700:1:2::117]) by ietfa.amsl.com (Postfix) with ESMTP id 2D9081ACD22 for <ietf@ietf.org>; Tue, 9 Feb 2016 08:51:47 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by mork.alvestrand.no (Postfix) with ESMTP id 34FAE7C7681 for <ietf@ietf.org>; Tue, 9 Feb 2016 17:51:46 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at alvestrand.no
Received: from mork.alvestrand.no ([127.0.0.1]) by localhost (mork.alvestrand.no [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VYef_8LJR8MM for <ietf@ietf.org>; Tue, 9 Feb 2016 17:51:45 +0100 (CET)
Received: from [IPv6:2001:470:de0a:1:f9d9:e245:ac77:8541] (unknown [IPv6:2001:470:de0a:1:f9d9:e245:ac77:8541]) by mork.alvestrand.no (Postfix) with ESMTPSA id 011547C7680 for <ietf@ietf.org>; Tue, 9 Feb 2016 17:51:44 +0100 (CET)
Subject: Re: Is Fragmentation at IP layer even needed ?
To: ietf@ietf.org
References: <CAOJ6w=EvzE3dM4Y2mFFR=9YyPBdmFu_jkF4-42LjkdbRd3yz_w@mail.gmail.com> <BLUPR05MB1985F5F2BB3118362C67B921AED50@BLUPR05MB1985.namprd05.prod.outlook.com> <20160208200943.A615941B5B96@rock.dv.isc.org> <BLUPR05MB19857B918B236880CE8FE871AED50@BLUPR05MB1985.namprd05.prod.outlook.com> <56B91905.4020801@tzi.org> <CAMm+LwgkpQnBm37Hq9qpffQKVgO9fyRv54pG6UM-gj8qFd_-Ow@mail.gmail.com> <56B92D74.7020903@si6networks.com> <CAHw9_iJ9pLbPgNT+rjmRDYxP9LnMAyUMQCE0f5=LaMVVxKqPVw@mail.gmail.com> <56B93A8B.4020407@si6networks.com> <CAMm+LwhO2-+hXg_5hHCdxysseBCdFFqyS_Ou5dqVsdjOYbRXLw@mail.gmail.com>
From: Harald Alvestrand <harald@alvestrand.no>
Message-ID: <56BA1920.5000309@alvestrand.no>
Date: Tue, 09 Feb 2016 17:51:44 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1
MIME-Version: 1.0
In-Reply-To: <CAMm+LwhO2-+hXg_5hHCdxysseBCdFFqyS_Ou5dqVsdjOYbRXLw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Archived-At: <http://mailarchive.ietf.org/arch/msg/ietf/q8sw4lIo-atfIVp65YYp6sygTkk>
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf/>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Feb 2016 16:51:49 -0000

Den 09. feb. 2016 02:18, skrev Phillip Hallam-Baker:
> On Mon, Feb 8, 2016 at 8:02 PM, Fernando Gont <fgont@si6networks.com> wrote:
>> On 02/08/2016 09:08 PM, Warren Kumari wrote:
> 
>>>
>>> https://tools.ietf.org/html/rfc7413 for those who are wondering.
>>
>> Even pre-fast open TCP already allowed this -- however, those data can
>> only be *consumed* once the 3WHS is complete...
> 
> Yep, as an apps guy, I don't really care about theoretical
> capabilities of the protocols that aren't exposed by the available
> network stack APIs.
> 
> The job isn't done until you have persuaded the platform people to
> give access to the capabilities. Hence we end up locked in UDP-ville.
> 

UDP is the application layer's IP.

v2.23.0 | Report a Bug | By Email