From exim@www1.ietf.org Mon May 10 12:55:42 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA16889 for ; Mon, 10 May 2004 12:55:42 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNDwv-0003vu-6E for diffserv-interest-archive@odin.ietf.org; Mon, 10 May 2004 12:48:17 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4AGmHFD015103 for diffserv-interest-archive@odin.ietf.org; Mon, 10 May 2004 12:48:17 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNDkH-0001Ts-1R; Mon, 10 May 2004 12:35:13 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNDf9-0000cK-53 for diffserv-interest@optimus.ietf.org; Mon, 10 May 2004 12:29:55 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA15110 for ; Mon, 10 May 2004 12:29:51 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNDf7-00020V-Is for diffserv-interest@ietf.org; Mon, 10 May 2004 12:29:53 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNDe7-0001fY-00 for diffserv-interest@ietf.org; Mon, 10 May 2004 12:28:51 -0400 Received: from firewall2.uwindsor.ca ([137.207.233.22] helo=internet2.uwindsor.ca) by ietf-mx with smtp (Exim 4.12) id 1BNDd7-0001G5-00 for diffserv-interest@ietf.org; Mon, 10 May 2004 12:27:49 -0400 Received: id MAA06121; Mon, 10 May 2004 12:17:39 -0400 Received: by gateway id 42722019 for ; Mon, 10 May 2004 12:17:36 -0400 From: "Feng Y" To: diffserv-interest@ietf.org X-Mailer: CommuniGate Pro Web Mailer v.4.0.6 Date: Mon, 10 May 2004 12:17:36 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 8bit Subject: [Diffserv-interest] CIR in AF class Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Hi, I have a question about the services in AF class. According to the RFC, the applications in the same service class should be treat identically. Does that mean, for a ISP, when it negotiates the SLAs with customers, all important parameters such as CIRs, CBSs, EBSs, and so on are the same? Or, within a class, different applications may have different CIRs? Thanks. Yang _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Tue May 11 04:12:03 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA10549 for ; Tue, 11 May 2004 04:12:03 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNSHD-0004h5-MO for diffserv-interest-archive@odin.ietf.org; Tue, 11 May 2004 04:06:12 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4B86BCd018026 for diffserv-interest-archive@odin.ietf.org; Tue, 11 May 2004 04:06:11 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNS0i-0001B6-Q7; Tue, 11 May 2004 03:49:08 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNRpc-0006gG-SR for diffserv-interest@optimus.ietf.org; Tue, 11 May 2004 03:37:40 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA08793 for ; Tue, 11 May 2004 03:37:38 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNRpa-0002kq-83 for diffserv-interest@ietf.org; Tue, 11 May 2004 03:37:38 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNRoe-0002Oj-00 for diffserv-interest@ietf.org; Tue, 11 May 2004 03:36:41 -0400 Received: from mtagate5.de.ibm.com ([195.212.29.154]) by ietf-mx with esmtp (Exim 4.12) id 1BNRo1-00020c-00 for diffserv-interest@ietf.org; Tue, 11 May 2004 03:36:01 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate5.de.ibm.com (8.12.10/8.12.10) with ESMTP id i4B7ZVYO044942; Tue, 11 May 2004 07:35:31 GMT Received: from sihl.zurich.ibm.com (sihl.zurich.ibm.com [9.4.16.232]) by d12nrmr1607.megacenter.de.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id i4B7ZUXv060926; Tue, 11 May 2004 09:35:30 +0200 Received: from zurich.ibm.com (sig-9-145-247-23.de.ibm.com [9.145.247.23]) by sihl.zurich.ibm.com (AIX4.3/8.9.3p2/8.9.3) with ESMTP id JAA34606; Tue, 11 May 2004 09:35:29 +0200 Message-ID: <40A08249.8080207@zurich.ibm.com> Date: Tue, 11 May 2004 09:35:37 +0200 From: Brian E Carpenter Organization: IBM User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113 X-Accept-Language: en, fr, de MIME-Version: 1.0 To: Feng Y CC: diffserv-interest@ietf.org Subject: Re: [Diffserv-interest] CIR in AF class References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Yang, In the diffserv architecture all packets with the same PHB get the same treatment - so there is no way that different flows within a class can get different treatments. However, there nothing to prevent an implementation from going further than the architecture and doing some type of flow-based additional treatment. But that would be a proprietary extension. Brian Feng Y wrote: > Hi, > > I have a question about the services in AF class. According > to the RFC, the applications in the same service class > should be treat identically. Does that mean, for a ISP, > when it negotiates the SLAs with customers, all important > parameters such as CIRs, CBSs, EBSs, and so on are the > same? Or, within a class, different applications may have > different CIRs? > > Thanks. > > Yang > > _______________________________________________ > Diffserv-interest mailing list > Diffserv-interest@ietf.org > https://www1.ietf.org/mailman/listinfo/diffserv-interest > _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Tue May 11 07:41:54 2004 Received: from optimus.ietf.org (iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA20598 for ; Tue, 11 May 2004 07:41:54 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNVb2-0000wW-Sh for diffserv-interest-archive@odin.ietf.org; Tue, 11 May 2004 07:38:53 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4BBcqIY003609 for diffserv-interest-archive@odin.ietf.org; Tue, 11 May 2004 07:38:52 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNVUS-0007z5-4K; Tue, 11 May 2004 07:32:04 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNVPW-00073G-Qw for diffserv-interest@optimus.ietf.org; Tue, 11 May 2004 07:26:58 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA19943 for ; Tue, 11 May 2004 07:26:57 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNVPW-0003Vu-86 for diffserv-interest@ietf.org; Tue, 11 May 2004 07:26:58 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNVOa-000383-00 for diffserv-interest@ietf.org; Tue, 11 May 2004 07:26:01 -0400 Received: from sj-iport-5.cisco.com ([171.68.10.87]) by ietf-mx with esmtp (Exim 4.12) id 1BNVO1-0002hX-00 for diffserv-interest@ietf.org; Tue, 11 May 2004 07:25:25 -0400 Received: from sj-core-4.cisco.com (171.68.223.138) by sj-iport-5.cisco.com with ESMTP; 11 May 2004 04:24:55 -0700 Received: from cisco.com (sjc-vpn1-877.cisco.com [10.21.99.109]) by sj-core-4.cisco.com (8.12.10/8.12.6) with SMTP id i4BBOpjO004244; Tue, 11 May 2004 04:24:52 -0700 (PDT) Received: by cisco.com (sSMTP sendmail emulation); Tue, 11 May 2004 07:24:51 -0400 Date: Tue, 11 May 2004 07:24:51 -0400 From: Scott W Brim To: Brian E Carpenter Cc: Feng Y , diffserv-interest@ietf.org Subject: Re: [Diffserv-interest] CIR in AF class Message-ID: <20040511112450.GN2184@sbrim-w2k01> References: <40A08249.8080207@zurich.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40A08249.8080207@zurich.ibm.com> User-Agent: Mutt/1.4.1i X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , On Tue, May 11, 2004 09:35:37AM +0200, Brian E Carpenter allegedly wrote: > Yang, > > In the diffserv architecture all packets with the same PHB get > the same treatment - so there is no way that different flows > within a class can get different treatments. However, there nothing > to prevent an implementation from going further than the architecture > and doing some type of flow-based additional treatment. But that > would be a proprietary extension. > > Brian Also, CIR treatment at the edge can be very different. > Feng Y wrote: > >Hi, > > > >I have a question about the services in AF class. According > >to the RFC, the applications in the same service class > >should be treat identically. Does that mean, for a ISP, > >when it negotiates the SLAs with customers, all important > >parameters such as CIRs, CBSs, EBSs, and so on are the > >same? Or, within a class, different applications may have > >different CIRs? _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Wed May 12 07:56:34 2004 Received: from optimus.ietf.org (www.iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA25815 for ; Wed, 12 May 2004 07:56:34 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNsH0-0007XQ-G2 for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 07:51:42 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4CBpgla028962 for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 07:51:42 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNsEP-00079q-0L; Wed, 12 May 2004 07:49:01 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNsBP-0006OB-OM for diffserv-interest@optimus.ietf.org; Wed, 12 May 2004 07:45:55 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA25506 for ; Wed, 12 May 2004 07:45:54 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNsBO-000048-TM for diffserv-interest@ietf.org; Wed, 12 May 2004 07:45:55 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNsAS-0007L7-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 07:44:56 -0400 Received: from web15408.mail.cnb.yahoo.com ([202.43.216.211]) by ietf-mx with smtp (Exim 4.12) id 1BNs9X-0006KT-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 07:44:00 -0400 Message-ID: <20040512114325.22292.qmail@web15408.mail.cnb.yahoo.com> Received: from [202.96.96.42] by web15408.mail.cnb.yahoo.com via HTTP; Wed, 12 May 2004 19:43:25 CST Date: Wed, 12 May 2004 19:43:25 +0800 (CST) From: =?gb2312?q?Jing=20Shen?= Subject: Re: [Diffserv-interest] CIR in AF class To: Scott W Brim , Brian E Carpenter Cc: Feng Y , diffserv-interest@ietf.org In-Reply-To: <20040511112450.GN2184@sbrim-w2k01> MIME-Version: 1.0 Content-Type: text/plain; charset=gb2312 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by ietf.org id HAA25507 Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Hi, > >=20 > > Brian >=20 > Also, CIR treatment at the edge can be very > different. =20 What do you means by "different"? implementation details or the traffic shaping/policing policy? To my understanding the same PHB reflects the same view of traffic across a policing point although there may exist great differnce in implementation methods.=20 regards jing shen _________________________________________________________ Do You Yahoo!?=20 =CF=D3=D3=CA=CF=E4=CC=AB=D0=A1=A3=BF=D1=C5=BB=A2=B5=E7=D3=CA=D7=D4=D6=FA=C0= =A9=C8=DD=A3=A1 http://cn.rd.yahoo.com/mail_cn/tag/10m/*http://cn.mail.yahoo.com/event/10= m.html _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Wed May 12 12:29:15 2004 Received: from optimus.ietf.org (iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA23378 for ; Wed, 12 May 2004 12:29:15 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNwER-0002yf-IP for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 12:05:19 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4CG5JpT011435 for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 12:05:19 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNvY3-0007cq-Cq; Wed, 12 May 2004 11:21:31 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNvAk-0005WG-3I for diffserv-interest@optimus.ietf.org; Wed, 12 May 2004 10:57:26 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA13321 for ; Wed, 12 May 2004 10:57:22 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNvAh-0001xq-Jp for diffserv-interest@ietf.org; Wed, 12 May 2004 10:57:23 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNv8U-00011w-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 10:55:07 -0400 Received: from firewall2.uwindsor.ca ([137.207.233.22] helo=internet2.uwindsor.ca) by ietf-mx with smtp (Exim 4.12) id 1BNv5L-0007QP-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 10:51:51 -0400 Received: id KAA07763; Wed, 12 May 2004 10:49:04 -0400 Received: by gateway id 42793756; Wed, 12 May 2004 10:49:04 -0400 From: "Feng Y" Subject: Re: [Diffserv-interest] CIR in AF class To: Jing Shen , Scott W Brim Cc: Feng Y , diffserv-interest@ietf.org X-Mailer: CommuniGate Pro Web Mailer v.4.0.6 Date: Wed, 12 May 2004 10:49:04 -0400 Message-ID: In-Reply-To: <20040512114325.22292.qmail@web15408.mail.cnb.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 8bit Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit > > Also, CIR treatment at the edge can be very > > different. > > What do you means by "different"? implementation > details or the traffic shaping/policing policy? > > To my understanding the same PHB reflects the same > view of traffic across a policing point although there > may exist great differnce in implementation methods. > Do you mean that although the implementations are different, the results are the same - defferent flows have same CIR? Or, the flows which have the same CIR maybe assigned different bandwidth according to the current network state? Thanks. Yang _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Wed May 12 13:05:44 2004 Received: from optimus.ietf.org (iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA26847 for ; Wed, 12 May 2004 13:05:44 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNwy7-0007F8-9Y for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 12:52:31 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4CGqVAN027843 for diffserv-interest-archive@odin.ietf.org; Wed, 12 May 2004 12:52:31 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNwnx-0004J5-F9; Wed, 12 May 2004 12:42:01 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BNwbu-0007Io-3e for diffserv-interest@optimus.ietf.org; Wed, 12 May 2004 12:29:34 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA23418 for ; Wed, 12 May 2004 12:29:31 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BNwbs-00051T-IE for diffserv-interest@ietf.org; Wed, 12 May 2004 12:29:32 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BNwav-0004T2-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 12:28:34 -0400 Received: from mtagate6.de.ibm.com ([195.212.29.155]) by ietf-mx with esmtp (Exim 4.12) id 1BNwZq-0003WF-00 for diffserv-interest@ietf.org; Wed, 12 May 2004 12:27:26 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate6.de.ibm.com (8.12.10/8.12.10) with ESMTP id i4CGQsMp064104 for ; Wed, 12 May 2004 16:26:54 GMT Received: from sihl.zurich.ibm.com (sihl.zurich.ibm.com [9.4.16.232]) by d12nrmr1607.megacenter.de.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id i4CGQsaO058536 for ; Wed, 12 May 2004 18:26:54 +0200 Received: from zurich.ibm.com (sig-9-145-244-230.de.ibm.com [9.145.244.230]) by sihl.zurich.ibm.com (AIX4.3/8.9.3p2/8.9.3) with ESMTP id SAA24720 for ; Wed, 12 May 2004 18:26:53 +0200 Message-ID: <40A25055.20406@zurich.ibm.com> Date: Wed, 12 May 2004 18:27:01 +0200 From: Brian E Carpenter Organization: IBM User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113 X-Accept-Language: en, fr, de MIME-Version: 1.0 To: diffserv-interest@ietf.org Subject: Re: [Diffserv-interest] CIR in AF class Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Yang, If different entry points to a diffserv domain apply different admission control rules then traffic entering at those points will get different shares of the bandwidth at the entry point, but once the traffic gets mixed up in the core of the domain, all traffic sources will be getting the same treatment. In other words any CIR differentiation at the entry points will vanish in the core. (That's assuming an IP network of course... MPLS is a different story). Brian Feng Y wrote: >>>Also, CIR treatment at the edge can be very >>>different. >> >>What do you means by "different"? implementation >>details or the traffic shaping/policing policy? >> >>To my understanding the same PHB reflects the same >>view of traffic across a policing point although there >>may exist great differnce in implementation methods. >> > > > Do you mean that although the implementations are > different, the results are the same - defferent flows have > same CIR? Or, the flows which have the same CIR maybe > assigned different bandwidth according to the current > network state? > > Thanks. > > Yang > _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From exim@www1.ietf.org Thu May 13 13:50:47 2004 Received: from optimus.ietf.org (www.iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA28387 for ; Thu, 13 May 2004 13:50:45 -0400 (EDT) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BOJsH-0002xo-KS for diffserv-interest-archive@odin.ietf.org; Thu, 13 May 2004 13:20:01 -0400 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4DHK112011389 for diffserv-interest-archive@odin.ietf.org; Thu, 13 May 2004 13:20:01 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BOJZC-0004iI-B6; Thu, 13 May 2004 13:00:18 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BOJUD-0003lj-Et for diffserv-interest@optimus.ietf.org; Thu, 13 May 2004 12:55:09 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA23123 for ; Thu, 13 May 2004 12:55:05 -0400 (EDT) Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BOJUB-0003tl-Jc for diffserv-interest@ietf.org; Thu, 13 May 2004 12:55:07 -0400 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BOJT9-0003Kw-00 for diffserv-interest@ietf.org; Thu, 13 May 2004 12:54:04 -0400 Received: from smtpout.mac.com ([17.250.248.44]) by ietf-mx with esmtp (Exim 4.12) id 1BOJS1-0002Ip-00 for diffserv-interest@ietf.org; Thu, 13 May 2004 12:52:54 -0400 Received: from mac.com (smtpin01-en2 [10.13.10.146]) by smtpout.mac.com (8.12.6/MantshX 2.0) with ESMTP id i4DGqqXP012420 for ; Thu, 13 May 2004 09:52:52 -0700 (PDT) Received: from [192.168.0.2] (c-24-6-159-63.client.comcast.net [24.6.159.63]) (authenticated bits=0) by mac.com (Xserve/smtpin01/MantshX 3.0) with ESMTP id i4DGqphS000781 for ; Thu, 13 May 2004 09:52:52 -0700 (PDT) User-Agent: Microsoft-Entourage/10.1.4.030702.0 Date: Thu, 13 May 2004 09:52:50 -0700 From: "John H. Shuler" To: Message-ID: In-Reply-To: <20040513160006.26727.65502.Mailman@www1.ietf.org> Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [Diffserv-interest] Re: Diffserv-interest digest, Vol 1 #129 - 1 msg Sender: diffserv-interest-admin@ietf.org Errors-To: diffserv-interest-admin@ietf.org X-BeenThere: diffserv-interest@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Differentiated services general discussion List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit This is true. However, one must assume that the core has been properly engineered to provide appropriate delay and jitter characteristics for the appropriate level of total class bandwidth, or else nothing will work no matter what you do at the edge. Therefore, the work done at the edge is extremely relevant to the overall performance of the different traffic classes. And yes, MPLS can make a huge difference in terms of making behavior more deterministic. However, it also suffers from different implementations across carriers, so peering agreements must be in place to ensure end-end QoS even with MPLS. Comments? j > From: diffserv-interest-request@ietf.org > Reply-To: diffserv-interest@ietf.org > Date: Thu, 13 May 2004 12:00:06 -0400 > To: diffserv-interest@ietf.org > Subject: Diffserv-interest digest, Vol 1 #129 - 1 msg > > Send Diffserv-interest mailing list submissions to > diffserv-interest@ietf.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://www1.ietf.org/mailman/listinfo/diffserv-interest > or, via email, send a message with subject or body 'help' to > diffserv-interest-request@ietf.org > > You can reach the person managing the list at > diffserv-interest-admin@ietf.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Diffserv-interest digest..." > > > Today's Topics: > > 1. Re: CIR in AF class (Brian E Carpenter) > > --__--__-- > > Message: 1 > Date: Wed, 12 May 2004 18:27:01 +0200 > From: Brian E Carpenter > Organization: IBM > To: diffserv-interest@ietf.org > Subject: Re: [Diffserv-interest] CIR in AF class > > Yang, > > If different entry points to a diffserv domain apply different > admission control rules then traffic entering at those points will > get different shares of the bandwidth at the entry point, but once the > traffic gets mixed up in the core of the domain, all traffic sources > will be getting the same treatment. In other words any CIR differentiation > at the entry points will vanish in the core. > > (That's assuming an IP network of course... MPLS is a different story). > > Brian > > Feng Y wrote: >>>> Also, CIR treatment at the edge can be very >>>> different. >>> >>> What do you means by "different"? implementation >>> details or the traffic shaping/policing policy? >>> >>> To my understanding the same PHB reflects the same >>> view of traffic across a policing point although there >>> may exist great differnce in implementation methods. >>> >> >> >> Do you mean that although the implementations are >> different, the results are the same - defferent flows have >> same CIR? Or, the flows which have the same CIR maybe >> assigned different bandwidth according to the current >> network state? >> >> Thanks. >> >> Yang >> > > > > --__--__-- > > _______________________________________________ > Diffserv-interest mailing list > Diffserv-interest@ietf.org > https://www1.ietf.org/mailman/listinfo/diffserv-interest > > > End of Diffserv-interest Digest _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest