Re: [Dart] I-D Action: draft-york-dart-dscp-rtp-01.txt

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 04 July 2014 01:20 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: dart@ietfa.amsl.com
Delivered-To: dart@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A51581A0428 for <dart@ietfa.amsl.com>; Thu, 3 Jul 2014 18:20:43 -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 zwfBh778isVk for <dart@ietfa.amsl.com>; Thu, 3 Jul 2014 18:20:41 -0700 (PDT)
Received: from mail-pd0-x22c.google.com (mail-pd0-x22c.google.com [IPv6:2607:f8b0:400e:c02::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 966341A0292 for <dart@ietf.org>; Thu, 3 Jul 2014 18:20:41 -0700 (PDT)
Received: by mail-pd0-f172.google.com with SMTP id w10so1086159pde.17 for <dart@ietf.org>; Thu, 03 Jul 2014 18:20:41 -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 :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=ETGzCbBEMhzER7HxZ4oqkBUUJTFriD+MK5RfiGP34Xw=; b=eNvkOCpxcSVeNYzrlhr69epBxykjOfeBRZ1M6eIlQb84Twp+CmbXuQxfjNf/3MLhOr PXBBOlc9Hb4wI+6F1I6T52Wi69oD+RB0Ub9SsfVATtY1BFi7s3BDOCGBVuL7P+BlvjVI bU2oBm069fQwduzFHdmNENGkUXip+AFAeZDcY6d0ksqaaYWPgQ4ZcEpHxPPPEptvjWem 65C/PfIfWQ4syT4gpk8itsVI5BswtMp6CMwkZmT1ibTU3Ky8XOnQsxrX/Wp1LmsAwgWE RmCK1CzpNQkG4tdiIySGSyjTTZ/uvuFt4LKNOqcNd9DaGn+qKEe65BDaDboM9b4siJaC MjYg==
X-Received: by 10.66.139.132 with SMTP id qy4mr68571pab.133.1404436841279; Thu, 03 Jul 2014 18:20:41 -0700 (PDT)
Received: from [130.216.38.108] (sc-cs-567-laptop.cs.auckland.ac.nz. [130.216.38.108]) by mx.google.com with ESMTPSA id w16sm6552453pdl.36.2014.07.03.18.20.39 for <dart@ietf.org> (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 03 Jul 2014 18:20:40 -0700 (PDT)
Message-ID: <53B60171.709@gmail.com>
Date: Fri, 04 Jul 2014 13:20:49 +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: dart@ietf.org
References: <20140703200148.20649.24059.idtracker@ietfa.amsl.com>
In-Reply-To: <20140703200148.20649.24059.idtracker@ietfa.amsl.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Archived-At: http://mailarchive.ietf.org/arch/msg/dart/C8nnxjgsmujObyybdZTndBD9kqE
Subject: Re: [Dart] I-D Action: draft-york-dart-dscp-rtp-01.txt
X-BeenThere: dart@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "\"DiffServ Applied to RTP Transports discussion list\"" <dart.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dart>, <mailto:dart-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dart/>
List-Post: <mailto:dart@ietf.org>
List-Help: <mailto:dart-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dart>, <mailto:dart-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 04 Jul 2014 01:20:43 -0000

Conistent with my previous message, I suggest that the following
text should be tuned slightly:

>    o  CS1 ('001000') was subsequently recommended for "less than best
>       effort" service when such a service is offered by a network
>       [RFC3662].  Not all networks offer such a service.
> 
>    Applications and traffic sources cannot rely upon different class
>    selector codepoints providing differentiated services or upon the
>    presence of a "less than best effort" service that is selected by the
>    CS1 DSCP,

because RFC 3662 doesn't define LBE; it defines "lower effort" (LE).

Apart from that, I think the document is much improved.

    Brian