IETF Logo Mail Archive

Re: [Roll] WGLC for draft-thubert-6man-flow-label-for-rpl-03

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 12 August 2014 23:38 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: roll@ietfa.amsl.com
Delivered-To: roll@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A864A1A0AD2; Tue, 12 Aug 2014 16:38:54 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-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 IFRmJdn1jqBB; Tue, 12 Aug 2014 16:38:53 -0700 (PDT)
Received: from mail-ob0-x22e.google.com (mail-ob0-x22e.google.com [IPv6:2607:f8b0:4003:c01::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 157611A00E2; Tue, 12 Aug 2014 16:38:52 -0700 (PDT)
Received: by mail-ob0-f174.google.com with SMTP id vb8so7695464obc.5 for <multiple recipients>; Tue, 12 Aug 2014 16:38:51 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:organization:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=hx0eOEFOsL1cjdWvPyKPQ+FEYL6bofpFZsADj0TCRZs=; b=gJzCaqs+LtiFge/Gn7PLxiL5AibdC9gIuVwBJDBrx2kIlbbHgUx2E7HnXwoG81tXlc buPfc4/JT+tKtHo1M2S2RQd9ouMVB/B2wZ11xMhE5OhA8Z7Gl97i3V/jqXC+RSpa6hFH mWLIFg/q/vUQnz92xafvn1Z2TnCUYKObMKloOE7DBEexvQj1FADOFECvXSqklXK/l1Nk UHRZghq1c2YqLD8zmqInFDuTTSqvD7Ohz8KMZgxwBUujKq8gj8Xsf/zeBE57g7rYkuRy Cd2LBWSmNDSTRhA5eGWyNAfvdXsQRnaQgkKZ26ntc3xcJfRnd/QlsWNZYWSOmMWOMpob 68rA==
X-Received: by 10.60.43.38 with SMTP id t6mr1146388oel.14.1407886731593; Tue, 12 Aug 2014 16:38:51 -0700 (PDT)
Received: from [172.24.60.8] (wireless-nat-21.auckland.ac.nz. [130.216.30.132]) by mx.google.com with ESMTPSA id s64sm544813oif.5.2014.08.12.16.38.49 for <multiple recipients> (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 12 Aug 2014 16:38:51 -0700 (PDT)
Message-ID: <53EAA58D.4060401@gmail.com>
Date: Wed, 13 Aug 2014 11:38:53 +1200
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
User-Agent: Thunderbird 2.0.0.6 (Windows/20070728)
MIME-Version: 1.0
To: Ines Robles <mariainesrobles@googlemail.com>
References: <E045AECD98228444A58C61C200AE1BD842D189A1@xmb-rcd-x01.cisco.com> <406B5D64-4F0E-4E71-BC60-A113FB367652@gmail.com> <46112F69-05F0-4E50-A808-287B06AE8E5F@cs.stanford.edu> <E045AECD98228444A58C61C200AE1BD842D1A9FA@xmb-rcd-x01.cisco.com> <057EC9C6-07FF-409B-A3BC-3348A5F43AB3@gmail.com> <53E534E8.4050304@gmail.com> <F7618DE0-7217-46C2-93A1-CE050085E7AB@employees.org> <53E926EB.9000505@gmail.com> <CAP+sJUfDyNa=t=+C=QXy8MmvG9rAUxA0mTsXL7xSWAeLUR1qcQ@mail.gmail.com>
In-Reply-To: <CAP+sJUfDyNa=t=+C=QXy8MmvG9rAUxA0mTsXL7xSWAeLUR1qcQ@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Archived-At: http://mailarchive.ietf.org/arch/msg/roll/Jph8NMlyl7HGB-ulhGcFFQnM2Mc
Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, 6man WG <ipv6@ietf.org>
Subject: Re: [Roll] WGLC for draft-thubert-6man-flow-label-for-rpl-03
X-BeenThere: roll@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
Reply-To: Routing Over Low power and Lossy networks <roll@ietf.org>
List-Id: Routing Over Low power and Lossy networks <roll.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/roll>, <mailto:roll-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/roll/>
List-Post: <mailto:roll@ietf.org>
List-Help: <mailto:roll-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/roll>, <mailto:roll-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 12 Aug 2014 23:38:54 -0000

Ines,

Can you perhaps clarify the exact question you are asking 6man?

(I'm thinking that 6man isn't being asked whether the number
of bits saved is a useful energy saving, or whether Carsten's
proposal is better.)

Regards
   Brian

On 12/08/2014 19:15, Ines Robles wrote:
> Hi,
> 
> On April, it was discussed and got consensus in ROLL [
> http://www.ietf.org/mail-archive/web/roll/current/msg08634.html].
> 
> This technique saves bytes, as was demonstrated by Xavier in his
> implementation [ start on Slide 41 -
> https://bytebucket.org/6tisch/meetings/raw/712902bb451d113494a7045e9730f1bb50335a79/140720_ietf90_plugfest_toronto/ietf90_toronto_plugfest_slides.pdf].
> Maybe we should enumerate the advantages and disadvantages of using it.
> (Some of these are tracked in ticket #5, #6 and #7).
> 
> 
> Anyway, demostratedIt needs the 6man approval to go forward.
> 
> Cheers,
> 
> Ines
> 
> 
> 2014-08-11 23:26 GMT+03:00 Brian E Carpenter <brian.e.carpenter@gmail.com>:
> 
>> On 12/08/2014 01:54, Ole Troan wrote:
>>>> I *really* don't think RFCs are algorithms to the point where we
>>>> need to do this. I see no reason why flow-label-for-rpl can't simply
>>>> declare itself an exception to this clause of RFC 6437.
>>> I must admit I'm uncomfortable with this draft and its approach. how can
>> we be sure that we aren't opening a Pandora's box?
>>> I'm worried that we set a precedence, and we'll see a new set of
>> creative proposals for the use of these 20 bits.
>>
>> Well, that has been the case for a long time: see RFC 6294.
>>
>> I see the concern. Actually that's why I don't want to see a formal
>> update to 6437, because the only rational update would be to allow
>> any closed domain to invent its own usage. We had that argument at
>> length during the development of 6437, and decided against it.
>> Therefore, treating RPL as a special case is the remaining option.
>> But does the ROLL community actually have consensus that they want
>> this special case?
>>
>>    Brian
>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
> 
> 
> ------------------------------------------------------------------------
> 
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------

v2.23.0 | Report a Bug | By Email