From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-02-ewr.dyndns.com (mxout-129-ewr.mailhop.org [216.146.33.129]) by lists.bufferbloat.net (Postfix) with ESMTP id 9D72C2E0322 for ; Thu, 24 Mar 2011 13:44:39 -0700 (PDT) Received: from scan-02-ewr.mailhop.org (scan-02-ewr.local [10.0.141.224]) by mail-02-ewr.dyndns.com (Postfix) with ESMTP id DFA4473BBEB for ; Thu, 24 Mar 2011 20:44:38 +0000 (UTC) X-Spam-Score: 0.9 () X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 64.59.134.9 Received: from idcmail-mo2no.shaw.ca (idcmail-mo2no.shaw.ca [64.59.134.9]) by mail-02-ewr.dyndns.com (Postfix) with ESMTP id 34B3673BB3D for ; Thu, 24 Mar 2011 20:44:38 +0000 (UTC) Received: from pd5ml2no-ssvc.prod.shaw.ca ([10.0.153.164]) by pd7mo1no-svcs.prod.shaw.ca with ESMTP; 24 Mar 2011 14:44:37 -0600 X-Cloudmark-SP-Filtered: true X-Cloudmark-SP-Result: v=1.1 cv=dyVpuHYQJROgCHwBBw1H+I+7e1rgZIKdHwrI0HSbuo4= c=1 sm=1 a=0HuT_ZXs-VMA:10 a=BLceEmwcHowA:10 a=wPDyFdB5xvgA:10 a=xqWC_Br6kY4A:10 a=5cEFxojLHbSazGx3ptQdfQ==:17 a=2pe74qmQAAAA:8 a=kurRqvosAAAA:8 a=3dZX8JWgAAAA:8 a=b7SLfKwVAAAA:8 a=ZbG541hDVVARdedCHZwA:9 a=m_DNs4guB6yR85bZ7ravlSnKx3YA:4 a=Fw8iwiUKpeAA:10 a=TphoKWqS9HQA:10 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 Received: from unknown (HELO amd.pacdat.net) ([96.48.80.31]) by pd5ml2no-dmz.prod.shaw.ca with ESMTP; 24 Mar 2011 14:44:37 -0600 Received: from localhost ([::1]) by amd.pacdat.net with esmtp (Exim 4.69) (envelope-from ) id 1Q2rOS-0004AZ-Ud; Thu, 24 Mar 2011 13:44:37 -0700 From: richard To: Dave Hart In-Reply-To: References: <7imxklz5vu.fsf@lanthane.pps.jussieu.fr> Content-Type: text/plain Date: Thu, 24 Mar 2011 13:44:32 -0700 Message-Id: <1300999472.12456.22.camel@amd.pacdat.net> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Content-Transfer-Encoding: 7bit X-Spam_score: -1.4 X-Spam_score_int: -13 X-Spam_bar: - Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] Thoughts on Stochastic Fair Blue X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Mar 2011 20:44:39 -0000 On Thu, 2011-03-24 at 05:30 +0000, Dave Hart wrote: > On Thu, Mar 24, 2011 at 01:03 UTC, Juliusz Chroboczek wrote: > > > > [1] Aleksandar Kuzmanovic. The power of explicit congestion > > notification. In Proceedings of the 2005 conference on Applications, > > technologies, architectures, and protocols for computer > > communications. 2005. > > http://www.cs.northwestern.edu/~akuzma/doc/ecn.pdf > > appears to be the paper Juliusz cited. > If nothing else, I take away from this paper that ECN should be applied (at least) on servers (and they advocate clients and routers) to TCP control packets (e.g. SYN and ACK packets) as well as data packets despite the potential (accepted admin legend???) that this might be a "bad thing" for reasons of aiding a potential SYN-flood attack vector. The point that doing this provides "instant" goodness for the ECN machines and only gradual degradation of non-ECN machines provides incentive to switch on ECN (and change to adding it to SYN/ACK too) no matter what AQM is being used, even the brain-dead one they came up with to test against RED. richard > Cheers, > Dave Hart > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat -- Richard C. Pitt Pacific Data Capture rcpitt@pacdat.net 604-644-9265 http://digital-rag.com www.pacdat.net PGP Fingerprint: FCEF 167D 151B 64C4 3333 57F0 4F18 AF98 9F59 DD73