[Diffserv-interest] Re: [Diffserv] (no subject)

Fred Baker <fred@cisco.com> Thu, 16 May 2002 12:08 UTC

Received: from optimus.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA21554 for <diffserv-interest-archive@odin.ietf.org>; Thu, 16 May 2002 08:08:30 -0400 (EDT)
Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id IAA08238 for diffserv-interest-archive@odin.ietf.org; Thu, 16 May 2002 08:08:43 -0400 (EDT)
Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id IAA08175; Thu, 16 May 2002 08:07:24 -0400 (EDT)
Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id IAA08149 for <diffserv-interest@optimus.ietf.org>; Thu, 16 May 2002 08:07:23 -0400 (EDT)
Received: from sj-msg-core-2.cisco.com (sj-msg-core-2.cisco.com [171.69.24.11]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA21527 for <diffserv-interest@ietf.org>; Thu, 16 May 2002 08:07:09 -0400 (EDT)
Received: from FRED-W2K6.cisco.com (sj-dial-4-18.cisco.com [171.68.181.147]) by sj-msg-core-2.cisco.com (8.12.2/8.12.2) with ESMTP id g4GC6aPJ015355; Thu, 16 May 2002 05:06:36 -0700 (PDT)
Message-Id: <5.1.0.14.2.20020516050344.01c67ba8@mira-sjcm-4.cisco.com>
X-Sender: fred@mira-sjcm-4.cisco.com
X-Mailer: QUALCOMM Windows Eudora Version 5.1
Date: Thu, 16 May 2002 05:06:34 -0700
To: hchang <hchang@scut.edu.cn>
From: Fred Baker <fred@cisco.com>
Cc: Diffserv <diffserv-interest@ietf.org>
In-Reply-To: <200205160943.RAA23105@letterbox.scut.edu.cn>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Subject: [Diffserv-interest] Re: [Diffserv] (no subject)
Sender: diffserv-interest-admin@ietf.org
Errors-To: diffserv-interest-admin@ietf.org
X-Mailman-Version: 1.0
Precedence: bulk
List-Id: Differentiated services general discussion <diffserv-interest.ietf.org>
X-BeenThere: diffserv-interest@ietf.org

At 05:58 PM 5/16/2002 +0800, hchang wrote:
>so how can we guarantee the per-flow QOS in this aggregated model?

we can't, not without per-flow queuing

>         so how can we use QOS routing in the Diffserv model?

About all we can do is something similar to OSPF's TOS routing, 
discriminating on the DSCP as well as the destination address, or move to a 
source/destination routing paradigm.


_______________________________________________
Diffserv-interest mailing list
Diffserv-interest@ietf.org
https://www1.ietf.org/mailman/listinfo/diffserv-interest