From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267512AbUHSXIm (ORCPT ); Thu, 19 Aug 2004 19:08:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267509AbUHSXGX (ORCPT ); Thu, 19 Aug 2004 19:06:23 -0400 Received: from sophie.6s.nl ([82.192.75.250]:51108 "EHLO sophie.6s.nl") by vger.kernel.org with ESMTP id S267493AbUHSXCn (ORCPT ); Thu, 19 Aug 2004 19:02:43 -0400 Subject: Re: network regression using 2.6.8.x behind Cisco 1712 From: Bastiaan Spandaw To: =?iso-8859-2?Q?Ond=F8ej_Sur=FD?= Cc: solt@dns.toxicfilms.tv, linux-kernel@vger.kernel.org In-Reply-To: <1092899789.5191.1.camel@ondrej.sury.org> References: <1092817247.5178.6.camel@ondrej.sury.org> <1092849905.26056.17.camel@localhost.localdomain> <1092899789.5191.1.camel@ondrej.sury.org> Content-Type: text/plain; charset=iso-8859-2 Message-Id: <1092956561.3760.7.camel@louise3.6s.nl> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Fri, 20 Aug 2004 01:02:41 +0200 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2004-08-19 at 09:16, Ondřej Surý wrote: > On Wed, 2004-08-18 at 18:25 +0100, Alan Cox wrote: > > On Mer, 2004-08-18 at 09:20, Ondřej Surý wrote: > > > It could be some bug in IOS, but it is triggered by some change between > > > 2.6.7 and 2.6.8. Any hints what should I try or where to look? > > > I could try some -pre and -rc kernel to locate where this was > > > introduced, but at least try to hint me which version should be > > > considered, I am not so willing to compile all -preX and -rcX, but could > > > do that if neccessary to hunt this regression. > > > > echo "0" >/proc/sys/net/ipv4/tcp_window_scaling see if that helps. > > Yep, that helped. Thanks a lot. > > > If so then suspect something like the cisco or upstream router. > > I will report this to my local Cisco support partner. I too have this problem. (cisco 837 running c837-k9o3sy6-mz.123-4.XG1.bin) Adjusting the window scaling helped me too. If you get an answer from cisco I'd greatly appreciate hearing about it. Regards, Bastiaan