From daemon@ns.ietf.org Fri Mar 1 10:04:15 2002 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 KAA28727 for ; Fri, 1 Mar 2002 10:04:15 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id KAA01384 for diffserv-interest-archive@odin.ietf.org; Fri, 1 Mar 2002 10:04:15 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id KAA01213; Fri, 1 Mar 2002 10:02:15 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id KAA01177 for ; Fri, 1 Mar 2002 10:02:10 -0500 (EST) Received: from fep02-mail.bloor.is.net.cable.rogers.com (fep02-mail.bloor.is.net.cable.rogers.com [66.185.86.72]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA28609 for ; Fri, 1 Mar 2002 10:02:09 -0500 (EST) Received: from ee.ryerson.ca ([24.112.177.95]) by fep02-mail.bloor.is.net.cable.rogers.com (InterMail vM.5.01.04.06 201-253-122-122-106-20020109) with ESMTP id <20020301150139.OTLB105573.fep02-mail.bloor.is.net.cable.rogers.com@ee.ryerson.ca> for ; Fri, 1 Mar 2002 10:01:39 -0500 Message-ID: <3C7F97D1.80908@ee.ryerson.ca> Date: Fri, 01 Mar 2002 10:01:37 -0500 From: Muhammad Jaseemuddin Organization: Ryerson University User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:0.9.4) Gecko/20011128 Netscape6/6.2.1 X-Accept-Language: en-us MIME-Version: 1.0 To: Diffserv-interest@ietf.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Authentication-Info: Submitted using SMTP AUTH PLAIN at fep02-mail.bloor.is.net.cable.rogers.com from [24.112.177.95] using ID at Fri, 1 Mar 2002 10:01:39 -0500 Content-Transfer-Encoding: 7bit Subject: [Diffserv-interest] CFP: IFIP/IEEE International Conference on Management of Multimedia Networks and Services 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 X-BeenThere: diffserv-interest@ietf.org Content-Transfer-Encoding: 7bit IFIP/IEEE International Conference on Management of Multimedia Networks and Services MMNS 2002 Managing IP Multimedia End-To-End October 6-9, 2002 Santa Barbara, CA USA http://www.cs.ucsb.edu/conferences/MMNS02 CALL FOR PAPERS With the popularity of the IP-based Internet, there has been a major shift towards building a worldwide, all-service and all-media network based on the next-generation of IP technology. Rich multimedia is increasingly being incorporated into Internet applications (like Voice-over-IP, streaming video, etc.). However, more work is needed to evolve the Internet and the underlying networking technologies into an infrastructure capable of supporting all- service and all-media traffic. Significant management functionality is required to ensure that these applications have a network that is both capable and available. Management requirements may ensue from the fact that multimedia traffic may traverse networks using a wide variety of technology and each network may be owned, operated, and controlled by a different organization. In order to provide end-to-end, high quality multimedia services, the network must provide robust management functionality. The IFIP/IEEE International Conference on Management of Multimedia Networks and Services will hold its fifth annual meeting Oct. 6 through Oct. 9, 2002 in Santa Barbara, CA. The IFIP/IEEE MMNS is a single-track conference and provides an intimate setting for discussion and debate. The program committee is soliciting original papers describing research in the area of management of multimedia networks and services. Topics of interest include, but are not limited to, the following: o End-to-end IP multimedia network and service management o VoIP service management o IP Video, streaming, interactive video service management o Provisioning of multimedia networks and services o Wireless and mobile multimedia network management o Optical multimedia network management o Cable multimedia network management o Multimedia network traffic engineering and optimization o Distributed multimedia service management o Network management models and architectures o Billing and security for multi-media services o Content distribution internetworking o Resource, performance and fault management o Multi-point, multicast services management o Network programmability for multimedia services o Policy-based management for multimedia services o QoS management o Multimedia traffic management o Multimedia content protection o Deployment of multimedia services o Active multimedia network management o Multimedia session management o Middleware support for management PAPER SUBMISSION Papers must be submitted electronically in postscript or PDF format. Detailed instructions are provided on the conference web site, http://www.cs.ucsb.edu/conferences/MMNS02. Paper length is limited to 20 double-spaced pages. The paper's cover page must include: title of paper, authors' names and affiliations, contact author's name and address (both postal and electronic), a short abstract, keywords, and submission area (from the list of relevant topics of interest). For any further information, please refer to the conference home page or direct your questions to almeroth@cs.ucsb.edu. IMPORTANT DATES Submission deadline: April 7, 2002 Notification of acceptance: June 30, 2002 Final version: July 28, 2002 Conference: October 6-9, 2002 -- ================================================== Muhammad Jaseemuddin Associate Professor Departement of Electrical and Computer Engineering Ryerson University 350 Victoria Street Toronto, ON M5B 2K3 Tel: +1 416 979-5000x6073 Fax: +1 416 979-5280 Email: jaseem@ee.ryerson.ca Web: http://www.ee.ryerson.ca/~jaseem ================================================== _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Mon Mar 11 05:17:49 2002 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 FAA03361 for ; Mon, 11 Mar 2002 05:17:49 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id FAA00512 for diffserv-interest-archive@odin.ietf.org; Mon, 11 Mar 2002 05:17:53 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id FAA00297; Mon, 11 Mar 2002 05:16:27 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id FAA00251 for ; Mon, 11 Mar 2002 05:16:26 -0500 (EST) Received: from internet-gateway2.zurich.ibm.com (internet-gateway2-x.zurich.ibm.com [195.212.119.243]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA03303 for ; Mon, 11 Mar 2002 05:16:21 -0500 (EST) Received: from collon.zurich.ibm.com (collon.zurich.ibm.com [9.4.16.143]) by internet-gateway2.zurich.ibm.com (AIX4.3/8.9.3/8.8.8) with SMTP id LAA10552; Mon, 11 Mar 2002 11:15:53 +0100 Received: from dhcp23-128.zurich.ibm.com by collon.zurich.ibm.com (AIX 4.3/UCB 5.64/4.03) id AA44960 from ; Mon, 11 Mar 2002 11:15:51 +0100 Message-Id: <3C8C83C9.8D9A8CA7@hursley.ibm.com> Date: Mon, 11 Mar 2002 11:15:37 +0100 From: Brian E Carpenter Organization: IBM X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U) X-Accept-Language: en,fr Mime-Version: 1.0 To: "Ramakrishnan.R (Networking) - CTD, Chennai." Cc: M Rashid Qazi , diffserv-interest@ietf.org References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Subject: [Diffserv-interest] Re: [Diffserv] one basic question 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 X-BeenThere: diffserv-interest@ietf.org Content-Transfer-Encoding: 7bit Please switch this to the diffserv-interest list To Subscribe: diffserv-interest-request@ietf.org The answer to your questions is in RFC 2474 and RFC 2475 Thanks Brian Carpenter diffserv WG co-chair > "Ramakrishnan.R (Networking) - CTD, Chennai." wrote: > > Hi Rashid, > As for as diffserv is considered, the treatment is given separately for the packets based ONLY on DSCP value. However, if your > router exists in the edge of the DS domain, you can give different treatments based on Source/Destination Pair. However, this > violates the diffserv implementation because diffserv is solely for flow aggregates. > > Am i correct? > > Regards > Ramki > > -----Original Message----- > From: M Rashid Qazi [mailto:qmrashid@hotmail.com] > Sent: Sunday, March 10, 2002 12:33 AM > To: diffserv@ietf.org > Subject: [Diffserv] one basic question > > Hi All, > I am working with some pricing project for differentiated services and utilizing NS2 software for that. My question > is somewhat very basic, but I didnt found any info for that. > In a diffserv domain, the packets can be catagorized or prioritized, but is this prioritization can be implent on a > single source -destination pair? or we can enqueued packets on the basis of their Flow IDs (fid) containing source > -destination address and their port numbers? > If I have three types of packets (with different bitrate) coming from a single node to an edge router (regardless > from where they belong originally or how the streams are generated) , but every type is carrying a different fid, is > that possible that I can assign every priority queue to every single type at the edge router? > > Thanks for your support > rashid.. > > -------------------------------------------------------------------------------------------------------------------- > Get your FREE download of MSN Explorer at http://explorer.msn.com. > _______________________________________________ diffserv mailing list diffserv@ietf.org > https://www1.ietf.org/mailman/listinfo/diffserv Archive: > http://www.ietf.org/mail-archive/working-groups/diffserv/current/maillist.html -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Brian E Carpenter Distinguished Engineer, Internet Standards & Technology, IBM On assignment at the IBM Zurich Laboratory, Switzerland Board Chairman, Internet Society http://www.isoc.org _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Thu Mar 14 04:18:19 2002 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 EAA13018 for ; Thu, 14 Mar 2002 04:18:18 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id EAA10499 for diffserv-interest-archive@odin.ietf.org; Thu, 14 Mar 2002 04:18:21 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA10194; Thu, 14 Mar 2002 04:16:31 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA10124 for ; Thu, 14 Mar 2002 04:16:28 -0500 (EST) Received: from satanas.hds.utc.fr (satanas.hds.utc.fr [195.83.157.25]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA12982; Thu, 14 Mar 2002 04:16:20 -0500 (EST) Received: from pcaaron.utc.fr (pcaaron.gi.utc [172.17.2.141]) by satanas.hds.utc.fr (Postfix) with ESMTP id 7071C5C24; Thu, 14 Mar 2002 10:16:11 +0100 (MET) Message-Id: <5.1.0.14.2.20020314031051.02269810@pophds.gi.utc> X-Sender: striegel@pophds.gi.utc X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Thu, 14 Mar 2002 03:15:28 -0600 To: "Geunhyung Kim" , "diffserv" , diffserv-interest@ietf.org From: Aaron D Striegel In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Subject: [Diffserv-interest] Re: [Diffserv] Question about Assured service 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 X-BeenThere: diffserv-interest@ietf.org This conversation has been redirected to the diffserv-interest list To Subscribe: diffserv-interest-request@ietf.org Thanks Aaron Striegel DS mailing list admin _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Thu Mar 14 04:21:47 2002 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 EAA13181 for ; Thu, 14 Mar 2002 04:21:47 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id EAA10926 for diffserv-interest-archive@odin.ietf.org; Thu, 14 Mar 2002 04:21:49 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA10276; Thu, 14 Mar 2002 04:17:10 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA10235 for ; Thu, 14 Mar 2002 04:17:08 -0500 (EST) Received: from satanas.hds.utc.fr (satanas.hds.utc.fr [195.83.157.25]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA12991; Thu, 14 Mar 2002 04:17:05 -0500 (EST) Received: from pcaaron.utc.fr (pcaaron.gi.utc [172.17.2.141]) by satanas.hds.utc.fr (Postfix) with ESMTP id 3C3625C10; Thu, 14 Mar 2002 10:16:57 +0100 (MET) Message-Id: <5.1.0.14.2.20020314031546.0220b628@pophds.gi.utc> X-Sender: striegel@pophds.gi.utc X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Thu, 14 Mar 2002 03:16:16 -0600 To: "Manish Ramesh K" , diffserv@ietf.org, diffserv-interest@ietf.org From: Aaron D Striegel In-Reply-To: <20020314065156.5106.qmail@mailweb15.rediffmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Subject: [Diffserv-interest] Re: [Diffserv] Weighted Fair Queuing and AF PHB 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 X-BeenThere: diffserv-interest@ietf.org This conversation has been redirected to the diffserv-interest list To Subscribe: diffserv-interest-request@ietf.org Thanks Aaron Striegel DS mailing list admin _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Wed Mar 20 09:40:32 2002 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 JAA00691 for ; Wed, 20 Mar 2002 09:40:31 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id JAA17366 for diffserv-interest-archive@odin.ietf.org; Wed, 20 Mar 2002 09:40:33 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA17137; Wed, 20 Mar 2002 09:34:18 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA17106 for ; Wed, 20 Mar 2002 09:34:17 -0500 (EST) Received: from mailweb9.rediffmail.com ([203.199.83.21]) by ietf.org (8.9.1a/8.9.1a) with SMTP id JAA00518 for ; Wed, 20 Mar 2002 09:34:13 -0500 (EST) Received: (qmail 32178 invoked by uid 510); 20 Mar 2002 14:33:12 -0000 Date: 20 Mar 2002 14:33:12 -0000 Message-ID: <20020320143312.32177.qmail@mailweb9.rediffmail.com> Received: from unknown (202.54.64.9) by rediffmail.com via HTTP; 20 Mar 2002 14:33:12 -0000 MIME-Version: 1.0 From: "Manish Ramesh K" Reply-To: "Manish Ramesh K" To: diffserv-interest@ietf.org Content-type: text/plain; format=flowed Content-Disposition: inline Subject: [Diffserv-interest] Weighted Fair Queuing and AF PHB 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 X-BeenThere: diffserv-interest@ietf.org hi how can one implement AF PHB using Weighted Fair Queuing schduling discipline??.how different will it be if EF PHB is also supported?.thanks in advance Manish. _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Thu Mar 21 09:26:32 2002 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 JAA11583 for ; Thu, 21 Mar 2002 09:26:31 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id JAA11288 for diffserv-interest-archive@odin.ietf.org; Thu, 21 Mar 2002 09:26:35 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA10883; Thu, 21 Mar 2002 09:18:43 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id JAA10854 for ; Thu, 21 Mar 2002 09:18:41 -0500 (EST) Received: from tssg.wit.ie (tssg.wit.ie [193.1.185.11]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA11230 for ; Thu, 21 Mar 2002 09:18:36 -0500 (EST) Received: from aquex ([10.37.1.90]) by tssg.wit.ie (8.11.6/8.11.6/SuSE Linux 0.5) with SMTP id g2LEIYi06879 for ; Thu, 21 Mar 2002 14:18:34 GMT From: "Chamil PW Kulatunga" To: Date: Thu, 21 Mar 2002 14:23:06 -0000 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Importance: Normal Content-Transfer-Encoding: 7bit Subject: [Diffserv-interest] Mix IntServ and DiffServ 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 X-BeenThere: diffserv-interest@ietf.org Content-Transfer-Encoding: 7bit Is there any information sources that implement IntServ in corporate networks and DiffServ in core network? Service mapping at the boundary? Thanks. Chamil _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Wed Mar 27 03:36:50 2002 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 DAA19328 for ; Wed, 27 Mar 2002 03:36:50 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id DAA14528 for diffserv-interest-archive@odin.ietf.org; Wed, 27 Mar 2002 03:36:50 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id DAA12224; Wed, 27 Mar 2002 03:32:10 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id DAA12168 for ; Wed, 27 Mar 2002 03:32:08 -0500 (EST) Received: from smtp.263.net ([202.96.44.20]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA19068 for ; Wed, 27 Mar 2002 03:32:06 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by smtp.263.net (Postfix) with SMTP id 00AB61CCE22DA for ; Wed, 27 Mar 2002 16:28:13 +0800 (CST) Received: from yuechunhui (unknown [210.42.103.198]) by 192.168.30.29 (Coremail) with SMTP id iAEAAI6CoTygAWfG.1 for ; Wed, 27 Mar 2002 16:28:13 +0800 (CST) Date: Wed, 27 Mar 2002 16:35:26 +0800 From: =?ISO-8859-1?Q?=C0=D6=B4=BA=EA=CD?= Reply-To: lechunhui@263.net To: Diffserv-interest X-mailer: FoxMail 3.11 [cn] Mime-Version: 1.0 Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 7bit Message-Id: <20020327082813.00AB61CCE22DA@smtp.263.net> Content-Transfer-Encoding: 7bit Subject: [Diffserv-interest] How to use AF PHB? 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 X-BeenThere: diffserv-interest@ietf.org Content-Transfer-Encoding: 7bit Hi, all! I've read some paper and RFC on diffserv. But I'm not clear about the use of AF. Will it be used for some realtime services such as video and audio, or just for better than best effort service? If it's for the latter one, will the realtime services be beared by EF? _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Thu Mar 28 04:07:08 2002 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 EAA19389 for ; Thu, 28 Mar 2002 04:07:08 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id EAA02277 for diffserv-interest-archive@odin.ietf.org; Thu, 28 Mar 2002 04:07:10 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA02112; Thu, 28 Mar 2002 04:05:11 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id EAA02083 for ; Thu, 28 Mar 2002 04:05:10 -0500 (EST) Received: from smtp.263.net ([202.96.44.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA19331 for ; Thu, 28 Mar 2002 04:05:06 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by smtp.263.net (Postfix) with SMTP id E84D41E430F38; Thu, 28 Mar 2002 16:55:41 +0800 (CST) Received: from yuechunhui (unknown [210.42.103.198]) by 192.168.30.28 (Coremail) with SMTP id CAQAAInaojzMDmfG.1 for ; Thu, 28 Mar 2002 16:55:41 +0800 (CST) Date: Thu, 28 Mar 2002 17:7:18 +0800 From: Le Chunhui Reply-To: lechunhui@263.net To: "Michael E.Flannagan" Cc: Diffserv-interest Subject: Re: RE: [Diffserv-interest] How to use AF PHB? X-mailer: FoxMail 3.11 [cn] Mime-Version: 1.0 Content-Type: text/plain; charset="GB2312" Message-Id: <20020328085541.E84D41E430F38@smtp.263.net> Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by optimus.ietf.org id EAA02084 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 X-BeenThere: diffserv-interest@ietf.org Content-Transfer-Encoding: 8bit Hi,Michael E. Flannagan! Thank you very much for your explanation. However, I'm still not quite clear about some questions. I think some CBR applications, such as audio is fit for EF PHB. But how about VBR realtime applications, such as video or large static images, for instance, pictures compressed via JPEG 2000? Those applications can adapt their quality image and amount of data according to the state of the network, and only relative small bit rates are required to ensured. Is AF more fit for them than EF? A new PHB, delay bounded PHB, is proposed in the newly passed RFC 3248, will it be even more fit for those VBR? Thanks a lot in advance! >EF PHB should be used for real time UDP traffic. AF PHB is used to >deliver multiple levels of drop preference, which corresponds to the {1 >or 2}-rate 3-color marker. Example: Traffic of a given type from 0-1Mb >gets marked AF11, 1-2Mb gets marked AF12, Above 2Mb gets marked AF13. >Per the RFC, if you then enable a WRED mechanism on an egress interface >(assuming that mechanism is DiffServ compliant), AF13 traffic will be >dropped with a probability greater than (or equal to) AF12, which will in >turn be dropped with a probability greater than (or equal to) AF11. > >The accomplishes the task of dropping "out of profile" packets with a >higher probablity than "in profile" packets, and adds the benefit of >never re-ordering packets within the entire AF1x class. > > > >Hope that helps, > >Mike Flannagan, CCIE #7651 >Network Consulting Engineer >Cisco Systems, Inc. > > >> -----Original Message----- >> From: diffserv-interest-admin@ietf.org >> [mailto:diffserv-interest-admin@ietf.org]On Behalf Of ÀÖ´ºêÍ >> Sent: Wednesday, March 27, 2002 3:35 AM >> To: Diffserv-interest >> Subject: [Diffserv-interest] How to use AF PHB? >> >> >> Hi, all! >> I've read some paper and RFC on diffserv. But I'm not clear >> about the use of AF. Will it be used for some realtime >> services such as video and audio, or just for better than best >> effort service? If it's for the latter one, will the realtime >> services be beared by EF? >> >> >> _______________________________________________ >> Diffserv-interest mailing list >> Diffserv-interest@ietf.org >> https://www1.ietf.org/mailman/listinfo/diffserv-interest Le Chunhui lechunhui@263.net _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest From daemon@optimus.ietf.org Sun Mar 31 20:03:50 2002 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 UAA01062 for ; Sun, 31 Mar 2002 20:03:50 -0500 (EST) Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id UAA19756 for diffserv-interest-archive@odin.ietf.org; Sun, 31 Mar 2002 20:03:50 -0500 (EST) Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id UAA19712; Sun, 31 Mar 2002 20:02:09 -0500 (EST) Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id UAA19688 for ; Sun, 31 Mar 2002 20:02:02 -0500 (EST) Received: from imc21.ex.nus.edu.sg (imc21.ex.nus.edu.sg [137.132.14.62]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA01050 for ; Sun, 31 Mar 2002 20:02:00 -0500 (EST) Received: by imc21.ex.nus.edu.sg with Internet Mail Service (5.5.2653.19) id ; Mon, 1 Apr 2002 09:01:54 +0800 Message-ID: <9C4C56CDF89E0440A6BD571E76D2387F06BABFAA@exs23.ex.nus.edu.sg> From: Jiang Yuming To: "'Le Chunhui '" , "'Michael E.Flannagan '" Cc: "'Diffserv-interest '" Subject: RE: RE: [Diffserv-interest] How to use AF PHB? Date: Mon, 1 Apr 2002 09:01:53 +0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="gb2312" 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 X-BeenThere: diffserv-interest@ietf.org Chunhui, As mentioned by Michael, AF provids multiple levels of drop. This can be utilized by VBR realtime applications. For example, in the case you mentioned, JPEG 2000 image or video may be marked as AF. The user can select among the three drop levels. It is true that with wavelet coding, JPEG 2000 can adapt to the network situation (mainly drop) and hence with relatively small ensured rate, the quality retrieved is still acceptable. However, less drop will produce better quality. BTW, RFC 3248 is a revision of RFC 2598 (by loosing "leased-line" with some delay bound) where EF was originally defined. Regards, Yuming Jiang -----Original Message----- From: Le Chunhui To: Michael E.Flannagan Cc: Diffserv-interest Sent: 3/28/02 1:00 AM Subject: Re: RE: [Diffserv-interest] How to use AF PHB? Hi,Michael E. Flannagan! Thank you very much for your explanation. However, I'm still not quite clear about some questions. I think some CBR applications, such as audio is fit for EF PHB. But how about VBR realtime applications, such as video or large static images, for instance, pictures compressed via JPEG 2000? Those applications can adapt their quality image and amount of data according to the state of the network, and only relative small bit rates are required to ensured. Is AF more fit for them than EF? A new PHB, delay bounded PHB, is proposed in the newly passed RFC 3248, will it be even more fit for those VBR? Thanks a lot in advance! >EF PHB should be used for real time UDP traffic. AF PHB is used to >deliver multiple levels of drop preference, which corresponds to the {1 >or 2}-rate 3-color marker. Example: Traffic of a given type from 0-1Mb >gets marked AF11, 1-2Mb gets marked AF12, Above 2Mb gets marked AF13. >Per the RFC, if you then enable a WRED mechanism on an egress interface >(assuming that mechanism is DiffServ compliant), AF13 traffic will be >dropped with a probability greater than (or equal to) AF12, which will in >turn be dropped with a probability greater than (or equal to) AF11. > >The accomplishes the task of dropping "out of profile" packets with a >higher probablity than "in profile" packets, and adds the benefit of >never re-ordering packets within the entire AF1x class. > > > >Hope that helps, > >Mike Flannagan, CCIE #7651 >Network Consulting Engineer >Cisco Systems, Inc. > > >> -----Original Message----- >> From: diffserv-interest-admin@ietf.org >> [mailto:diffserv-interest-admin@ietf.org]On Behalf Of ??? >> Sent: Wednesday, March 27, 2002 3:35 AM >> To: Diffserv-interest >> Subject: [Diffserv-interest] How to use AF PHB? >> >> >> Hi, all! >> I've read some paper and RFC on diffserv. But I'm not clear >> about the use of AF. Will it be used for some realtime >> services such as video and audio, or just for better than best >> effort service? If it's for the latter one, will the realtime >> services be beared by EF? >> >> >> _______________________________________________ >> Diffserv-interest mailing list >> Diffserv-interest@ietf.org >> https://www1.ietf.org/mailman/listinfo/diffserv-interest Le Chunhui lechunhui@263.net _______________________________________________ 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