Re: [httpstreaming] [AVT] Fw: Agenda and Slides

"Ali C. Begen (abegen)" <abegen@cisco.com> Sun, 07 November 2010 16:43 UTC

Return-Path: <abegen@cisco.com>
X-Original-To: httpstreaming@core3.amsl.com
Delivered-To: httpstreaming@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 379553A67F7 for <httpstreaming@core3.amsl.com>; Sun, 7 Nov 2010 08:43:35 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.599
X-Spam-Level:
X-Spam-Status: No, score=-10.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6823obmPcQpv for <httpstreaming@core3.amsl.com>; Sun, 7 Nov 2010 08:43:34 -0800 (PST)
Received: from sj-iport-6.cisco.com (sj-iport-6.cisco.com [171.71.176.117]) by core3.amsl.com (Postfix) with ESMTP id 63FCB3A67F3 for <httpstreaming@ietf.org>; Sun, 7 Nov 2010 08:43:34 -0800 (PST)
Authentication-Results: sj-iport-6.cisco.com; dkim=neutral (message not signed) header.i=none
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AvsEAFpm1kyrRN+J/2dsb2JhbACiCnGeAppThUgEhFiJDQ
X-IronPort-AV: E=Sophos;i="4.58,310,1286150400"; d="scan'208";a="616039574"
Received: from sj-core-3.cisco.com ([171.68.223.137]) by sj-iport-6.cisco.com with ESMTP; 07 Nov 2010 16:43:53 +0000
Received: from xbh-sjc-231.amer.cisco.com (xbh-sjc-231.cisco.com [128.107.191.100]) by sj-core-3.cisco.com (8.13.8/8.14.3) with ESMTP id oA7GhrCp025634; Sun, 7 Nov 2010 16:43:53 GMT
Received: from xmb-sjc-215.amer.cisco.com ([171.70.151.169]) by xbh-sjc-231.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.4675); Sun, 7 Nov 2010 08:43:52 -0800
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable
Date: Sun, 7 Nov 2010 08:43:42 -0800
Message-ID: <04CAD96D4C5A3D48B1919248A8FE0D540D9B4262@xmb-sjc-215.amer.cisco.com>
In-Reply-To: <068E7ECD-1435-402A-BC1E-3ADCBF023BC7@csperkins.org>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: [httpstreaming] [AVT] Fw: Agenda and Slides
Thread-Index: Act+mgnPUs8BfnhFRoOR6Se8zYLjjAAAKw8Q
References: <249792B19B4845578D9BDC3F77C12D68@china.huawei.com> <58D167AC-E817-4256-88D0-42E36492C562@niven-jenkins.co.uk> <04CAD96D4C5A3D48B1919248A8FE0D540D9B4260@xmb-sjc-215.amer.cisco.com> <3151D5E6-E534-4C1D-978E-7F214B31DFB2@niven-jenkins.co.uk> <068E7ECD-1435-402A-BC1E-3ADCBF023BC7@csperkins.org>
From: "Ali C. Begen (abegen)" <abegen@cisco.com>
To: "Colin Perkins" <csp@csperkins.org>, "Ben Niven-Jenkins" <ben@niven-jenkins.co.uk>
X-OriginalArrivalTime: 07 Nov 2010 16:43:52.0840 (UTC) FILETIME=[F60E8080:01CB7E9A]
Cc: httpstreaming@ietf.org
Subject: Re: [httpstreaming] [AVT] Fw: Agenda and Slides
X-BeenThere: httpstreaming@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Network based HTTP Streaming discussion list <httpstreaming.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/httpstreaming>, <mailto:httpstreaming-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/httpstreaming>
List-Post: <mailto:httpstreaming@ietf.org>
List-Help: <mailto:httpstreaming-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/httpstreaming>, <mailto:httpstreaming-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 07 Nov 2010 16:43:35 -0000

> -----Original Message-----
> From: Colin Perkins [mailto:csp@csperkins.org]
> Sent: Monday, November 08, 2010 12:36 AM
> To: Ben Niven-Jenkins
> Cc: Ali C. Begen (abegen); httpstreaming@ietf.org
> Subject: Re: [httpstreaming] [AVT] Fw: Agenda and Slides
> 
> On 8 Nov 2010, at 00:15, Ben Niven-Jenkins wrote:
> > On 7 Nov 2010, at 16:04, Ali C. Begen (abegen) wrote:
> ...
> >>> From: avt-bounces@ietf.org [mailto:avt-bounces@ietf.org] On Behalf Of Ben Niven-Jenkins
> >>> Colleagues,
> >>>
> >>> Reading the slides I'd like to make some comments in advance of the bar-bof, we can discuss them more via the mailing
> list
> >>> or in the bar-BoF itself.
> >>>
> >>> HTTP_Stream_1.ppt Slide 14:
> >>>
> >>> "
> >>> No distinction regular HTTP traffic from HTTP Streaming traffic
> >>> Disadvantage:
> >>>  Transport streaming media in the same way as web page
> >>>  transport Streaming media has no priority to be delivered/processed first
> >>> "
> >>>
> >>> This is not correct, it is possible to apply different treatment to HTTP Streaming traffic Vs "regular" web page traffic, e.g.
> by
> >>> the server setting different TOS/DSCP for streaming Vs "web" traffic.
> >>
> >> If the network will not respect to these code points (which is the case in the open Internet), this won’t help but the servers
> themselves can prioritize anything they want to in their scheduling or processing. But, I am having difficulty in understanding
> why this is relevant to a standardization work. It looks to me as a product feature differentiation.
> >
> > Agreed. IMO this is purely a deployment/implementation issue and not something that needs any standardisation.
> 
> It *might* make sense if the aim were to add an HTTP header to mark HTTP streaming requests, so that a web proxy treated
> them differently? (i.e., differentiation at the HTTP service layer, not at the network layer).

Sure, but that does require changes in the proxies. And if we start going down that path, there are many, probably better, things that we can do.

-acbegen
 
> Colin