From iesg-secretary@ietf.org Thu Oct 25 08:09:48 2012 Return-Path: X-Original-To: ledbat@ietfa.amsl.com Delivered-To: ledbat@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EFF2021F89E2; Thu, 25 Oct 2012 08:09:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.537 X-Spam-Level: X-Spam-Status: No, score=-102.537 tagged_above=-999 required=5 tests=[AWL=0.062, BAYES_00=-2.599, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SSmQJmTDBqVD; Thu, 25 Oct 2012 08:09:48 -0700 (PDT) Received: from ietfa.amsl.com (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5803921F89E5; Thu, 25 Oct 2012 08:09:47 -0700 (PDT) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: The IESG To: IETF-Announce X-Test-IDTracker: no X-IETF-IDTracker: 4.34 Message-ID: <20121025150947.31632.50207.idtracker@ietfa.amsl.com> Date: Thu, 25 Oct 2012 08:09:47 -0700 Cc: ledbat mailing list , ledbat chair , RFC Editor Subject: [ledbat] Document Action: 'Low Extra Delay Background Transport (LEDBAT)' to Experimental RFC (draft-ietf-ledbat-congestion-10.txt) X-BeenThere: ledbat@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Mailing list of the LEDBAT WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Oct 2012 15:09:49 -0000 The IESG has approved the following document: - 'Low Extra Delay Background Transport (LEDBAT)' (draft-ietf-ledbat-congestion-10.txt) as Experimental RFC This document is the product of the Low Extra Delay Background Transport Working Group. The IESG contact persons are Wesley Eddy and Martin Stiemerling. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-ledbat-congestion/ Technical Summary This document describes an experimental congestion algorithm for building a lower than best-effort transport. The algorithm attempts to use the residual capacity on an end-to-end path while limiting queuing delay. The algorithm sense increase in one-way delay measurements to yield in the presence of any competing flows thus limiting interference with the network performance of competing flows. Working Group Summary We reached consensus on the basic algorithm a long while back while most of the later revisions and discussions were around parameterization and choosing the right defaults. This is expected as this is an experimental algorithm and data needs to guide these decisions rather than theory. In the end we got enough (independent) experimental data that guided the design decisions. Document Quality There are several independent implementations including BitTorrent itself which pioneered this algorithm and ship it in their product. A number of universities and more recently Apple prototyped and shared results during the last call. I am confident that parameterization and associated tradeoffs are well understood and documented. Personnel Murari Sridharan (muraris@microsoft.com) is the document shepherd. Wesley Eddy (wes@mti-systems.com) is the responsible AD. From Rolf.Winter@neclab.eu Thu Oct 25 11:18:03 2012 Return-Path: X-Original-To: ledbat@ietfa.amsl.com Delivered-To: ledbat@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2026E21F8508 for ; Thu, 25 Oct 2012 11:18:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -103.249 X-Spam-Level: X-Spam-Status: No, score=-103.249 tagged_above=-999 required=5 tests=[AWL=0.350, BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nZ+DZKUbKsFk for ; Thu, 25 Oct 2012 11:18:02 -0700 (PDT) Received: from mailer1.neclab.eu (mailer1.neclab.eu [195.37.70.40]) by ietfa.amsl.com (Postfix) with ESMTP id 4D72F21F885F for ; Thu, 25 Oct 2012 11:18:02 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mailer1.neclab.eu (Postfix) with ESMTP id B7C89102320 for ; Thu, 25 Oct 2012 20:18:00 +0200 (CEST) X-Virus-Scanned: Amavisd on Debian GNU/Linux (netlab.nec.de) Received: from mailer1.neclab.eu ([127.0.0.1]) by localhost (atlas-a.office.hd [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4Hy-nIzxnbzx for ; Thu, 25 Oct 2012 20:18:00 +0200 (CEST) Received: from METHONE.office.hd (methone.office.hd [192.168.24.54]) by mailer1.neclab.eu (Postfix) with ESMTP id 9EB2710231F for ; Thu, 25 Oct 2012 20:17:55 +0200 (CEST) Received: from DAPHNIS.office.hd ([169.254.2.239]) by METHONE.office.hd ([192.168.24.54]) with mapi id 14.01.0323.003; Thu, 25 Oct 2012 20:17:55 +0200 From: Rolf Winter To: "ledbat@ietf.org" Thread-Topic: Document Action: 'Low Extra Delay Background Transport (LEDBAT)' to Experimental RFC (draft-ietf-ledbat-congestion-10.txt) Thread-Index: AQHNssLxiHQNAMZKdEqAc8m5bkT3b5fKJlaA Date: Thu, 25 Oct 2012 18:17:00 +0000 Message-ID: <791AD3077F94194BB2BDD13565B6295D554FADED@DAPHNIS.office.hd> References: <20121025150947.31632.50207.idtracker@ietfa.amsl.com> In-Reply-To: <20121025150947.31632.50207.idtracker@ietfa.amsl.com> Accept-Language: en-US, de-DE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.7.0.203] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [ledbat] Document Action: 'Low Extra Delay Background Transport (LEDBAT)' to Experimental RFC (draft-ietf-ledbat-congestion-10.txt) X-BeenThere: ledbat@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Mailing list of the LEDBAT WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Oct 2012 18:18:03 -0000 WG, Let me use this opportunity to thank you all for your contributions to this= work. We made it. Our final document is done. Thanks to the authors for th= eir hard work, thanks to our ADs for their tireless effort to progress this= document and thanks to the IESG for their swift responses during the final= stages. Once the congestion control draft has been published as RFC the WG will clo= se down. The mailing list has not seen a lot of traffic and it has been agr= eed with the ADs to direct potential comments and questions to the TSVAREA = list. Thanks again! Rolf NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road, London = W3 6BL | Registered in England 2832014=20 > -----Original Message----- > From: The IESG [mailto:iesg-secretary@ietf.org] > Sent: Donnerstag, 25. Oktober 2012 17:10 > To: IETF-Announce > Cc: RFC Editor; ledbat mailing list; ledbat chair > Subject: Document Action: 'Low Extra Delay Background Transport > (LEDBAT)' to Experimental RFC (draft-ietf-ledbat-congestion-10.txt) >=20 > The IESG has approved the following document: > - 'Low Extra Delay Background Transport (LEDBAT)' > (draft-ietf-ledbat-congestion-10.txt) as Experimental RFC >=20 > This document is the product of the Low Extra Delay Background > Transport Working Group. >=20 > The IESG contact persons are Wesley Eddy and Martin Stiemerling. >=20 > A URL of this Internet Draft is: > http://datatracker.ietf.org/doc/draft-ietf-ledbat-congestion/ >=20 >=20 >=20 >=20 > Technical Summary >=20 > This document describes an experimental congestion algorithm for > building a lower than best-effort transport. The algorithm attempts to > use the residual capacity on an end-to-end path while limiting queuing > delay. The algorithm sense increase in one-way delay measurements to > yield in the presence of any competing flows thus limiting interference > with the network performance of competing flows. >=20 > Working Group Summary > We reached consensus on the basic algorithm a long while back while > most of the later revisions and discussions were around > parameterization and choosing the right defaults. This is expected as > this is an experimental algorithm and data needs to guide these > decisions rather than theory. In the end we got enough > (independent) experimental data that guided the design decisions. >=20 >=20 > Document Quality > There are several independent implementations including BitTorrent > itself which pioneered this algorithm and ship it in their product. A > number of universities and more recently Apple prototyped and shared > results during the last call. I am confident that parameterization and > associated tradeoffs are well understood and documented. >=20 > Personnel >=20 > Murari Sridharan (muraris@microsoft.com) is the document shepherd. > Wesley Eddy (wes@mti-systems.com) is the responsible AD.