Re: [AVTCORE] [Dart] Treatment of RTCP (was Re: Colin Perkins comments - WGLC: draft-ietf-dart-dscp-rtp-02)

Ben Campbell <ben@nostrum.com> Wed, 27 August 2014 20:48 UTC

Return-Path: <ben@nostrum.com>
X-Original-To: avt@ietfa.amsl.com
Delivered-To: avt@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B37C91A0180 for <avt@ietfa.amsl.com>; Wed, 27 Aug 2014 13:48:44 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.568
X-Spam-Level:
X-Spam-Status: No, score=-2.568 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.668] 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 ysoSi9T9EVnK for <avt@ietfa.amsl.com>; Wed, 27 Aug 2014 13:48:43 -0700 (PDT)
Received: from nostrum.com (raven-v6.nostrum.com [IPv6:2001:470:d:1130::1]) (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 1509D1A026A for <avt@ietf.org>; Wed, 27 Aug 2014 13:48:43 -0700 (PDT)
Received: from [10.0.1.23] (cpe-173-172-146-58.tx.res.rr.com [173.172.146.58]) (authenticated bits=0) by nostrum.com (8.14.9/8.14.7) with ESMTP id s7RKmdbJ052568 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Wed, 27 Aug 2014 15:48:40 -0500 (CDT) (envelope-from ben@nostrum.com)
X-Authentication-Warning: raven.nostrum.com: Host cpe-173-172-146-58.tx.res.rr.com [173.172.146.58] claimed to be [10.0.1.23]
Content-Type: text/plain; charset="windows-1252"
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
From: Ben Campbell <ben@nostrum.com>
In-Reply-To: <ABC20E38-5908-400D-BAF2-FEA46931DC76@ifi.uio.no>
Date: Wed, 27 Aug 2014 15:48:37 -0500
X-Mao-Original-Outgoing-Id: 430865317.29984-1c72e872c3149930929f43a22d66b9e2
Content-Transfer-Encoding: quoted-printable
Message-Id: <A323C3E4-D8CD-45C7-8605-0BE09B9A5FBA@nostrum.com>
References: <embac59e09-6dad-42df-94b2-7daa46d31d5d@sydney> <704DAEE2-C26F-48C8-8C75-548FE115B91F@csperkins.org> <8D3D17ACE214DC429325B2B98F3AE712077BB42E1F@MX15A.corp.emc.com> <22E25F9C-E9B1-4C3C-989E-570BAAF58018@csperkins.org> <A4501649-B293-4B6F-A4EB-A08B30EF922C@ifi.uio.no> <1B4C6B70-B3EB-45C0-892D-328954E3AD4E@csperkins.org> <B43C20C1-C34E-4441-80EB-24C89DCE430D@ifi.uio.no> <0F1C9E57-EDA5-4A44-9F8A-87A76C159AED@csperkins.org> <DB56BB81-4CD0-4A2A-A664-67103CED72BC@nostrum.com> <ABC20E38-5908-400D-BAF2-FEA46931DC76@ifi.uio.no>
To: Michael Welzl <michawe@ifi.uio.no>, Colin Perkins <csp@csperkins.org>, "Paul E. Jones" <paulej@packetizer.com>, "Black, David" <david.black@emc.com>
X-Mailer: Apple Mail (2.1878.6)
Archived-At: http://mailarchive.ietf.org/arch/msg/avt/XW8e6klG3Hn1pyYPeoHSlKi2w2w
Cc: "draft-ietf-dart-dscp-rtp.all@tools.ietf.org" <draft-ietf-dart-dscp-rtp.all@tools.ietf.org>, "dart@ietf.org" <dart@ietf.org>, "avt@ietf.org WG" <avt@ietf.org>
Subject: Re: [AVTCORE] [Dart] Treatment of RTCP (was Re: Colin Perkins comments - WGLC: draft-ietf-dart-dscp-rtp-02)
X-BeenThere: avt@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Audio/Video Transport Core Maintenance <avt.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/avt>, <mailto:avt-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/avt/>
List-Post: <mailto:avt@ietf.org>
List-Help: <mailto:avt-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 27 Aug 2014 20:48:45 -0000

On Aug 27, 2014, at 3:45 PM, Michael Welzl <michawe@ifi.uio.no> wrote:

> I don't know the beginning of this but I can help go up the stack:
> 
> for the short dialogue between Colin and me, the conclusion is: Colin is right. RTCP probably won't be used by congestion control to estimate the RTT.
> 

Thanks, Michael, I think that fits with some earlier conversations as well.

Colin and Paul (and David):

Are we converging on what guidance to put into the DART draft?

Thanks!

Ben.