Re: [Roll] [6tisch] [6lo] Call for advice on the RFC 6553 6lo encoding

Carsten Bormann <cabo@tzi.org> Wed, 15 October 2014 09:55 UTC

Return-Path: <cabo@tzi.org>
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 495441A017A; Wed, 15 Oct 2014 02:55:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.551
X-Spam-Level:
X-Spam-Status: No, score=-1.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_DE=0.35, SPF_HELO_PASS=-0.001] autolearn=no
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 HtJs2dx3pvxn; Wed, 15 Oct 2014 02:55:04 -0700 (PDT)
Received: from informatik.uni-bremen.de (mailhost.informatik.uni-bremen.de [IPv6:2001:638:708:30c9::12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B6AB61A1A04; Wed, 15 Oct 2014 02:55:03 -0700 (PDT)
X-Virus-Scanned: amavisd-new at informatik.uni-bremen.de
Received: from smtp-fb3.informatik.uni-bremen.de (smtp-fb3.informatik.uni-bremen.de [134.102.224.120]) by informatik.uni-bremen.de (8.14.5/8.14.5) with ESMTP id s9F9sx3M012228; Wed, 15 Oct 2014 11:54:59 +0200 (CEST)
Received: from [10.0.1.3] (reingewinn.informatik.uni-bremen.de [134.102.218.123]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by smtp-fb3.informatik.uni-bremen.de (Postfix) with ESMTPSA id C8546455; Wed, 15 Oct 2014 11:54:58 +0200 (CEST)
Content-Type: text/plain; charset="windows-1252"
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
From: Carsten Bormann <cabo@tzi.org>
In-Reply-To: <E045AECD98228444A58C61C200AE1BD842E1B0FE@xmb-rcd-x01.cisco.com>
Date: Wed, 15 Oct 2014 11:54:58 +0200
X-Mao-Original-Outgoing-Id: 435059698.336467-94642d3bde4d95641af253639987e760
Content-Transfer-Encoding: quoted-printable
Message-Id: <7E87BDDD-A8FC-45A3-A0F5-57066CF48821@tzi.org>
References: <E045AECD98228444A58C61C200AE1BD842E1B086@xmb-rcd-x01.cisco.com> <2463B5D0-C7DB-41DB-8F85-089C1EF08E2F@tzi.org> <E045AECD98228444A58C61C200AE1BD842E1B0FE@xmb-rcd-x01.cisco.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
X-Mailer: Apple Mail (2.1878.6)
Archived-At: http://mailarchive.ietf.org/arch/msg/roll/AK1djKdFEqZzlBy22raoRrHbL3o
Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, "6tisch@ietf.org" <6tisch@ietf.org>, "6lo@ietf.org" <6lo@ietf.org>
Subject: Re: [Roll] [6tisch] [6lo] Call for advice on the RFC 6553 6lo encoding
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: Wed, 15 Oct 2014 09:55:05 -0000

On 15 Oct 2014, at 10:40, Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:

> You are suggesting here that the extra byte in b) may apply only to some packets,

That’s not a suggestion but simply how I designed it, in order to free up the bits without increasing the packet sizes.

> but we do not have a consensus that your specific solution is acceptable

We need to have this discussion now then.  My proposal is sensible only if that is the case.

> and I have my own string doubts because of the way RPL uses those bits.

Please put those on the table…

Grüße, Carsten