From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261461AbVCFS0h (ORCPT ); Sun, 6 Mar 2005 13:26:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261462AbVCFS0h (ORCPT ); Sun, 6 Mar 2005 13:26:37 -0500 Received: from dns2.EURNetCity.net ([80.68.196.9]:29712 "EHLO dns2.EurNetCity.NET") by vger.kernel.org with ESMTP id S261461AbVCFSXN (ORCPT ); Sun, 6 Mar 2005 13:23:13 -0500 Message-ID: <422B4A66.707@route-add.net> Date: Sun, 06 Mar 2005 19:22:30 +0100 From: Alessandro Selli User-Agent: Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.7.5) Gecko/20050105 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Pedro Larroy Cc: linux-net@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Vanilla kernel >=2.4.28-rc2 incompatibility with ADSL modem Dlink DSL-G300+ References: <422B3F60.8020303@route-add.net> <20050306180833.GA4398@larroy.com> In-Reply-To: <20050306180833.GA4398@larroy.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-EurNetCity-MailScanner-Information: Please contact the ISP for more information X-EurNetCity-MailScanner: Found to be clean X-MailScanner-From: dhatarattha@route-add.net Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Pedro Larroy wrote: [....] >>I tried changing the wiring, I swapped the ethernet ports the LAN and >>ADSL modem where connected to, I swapped the modem with an identical one >>from a colleague of mine, I upgraded to kernel 2.4.29 all to no avail. >> I then tried the 2.4.28-rc{1,2,3} kernels, and I found the 2.4.28-rc1 >>not to exhibit the problem, that manifests itself on the 2.4.28-rc{2,3} >>kernels. >> The problem is sparc-specific, a PC with the very same configuration >>(Debian stable, plain vanilla kernels etc.) did not suffer any >>connection drops. I forgot to mention: as I was suggested to do by other people, I changed the settings of the two parameters: /proc/sys/net/ipv4/tcp_ecn /proc/sys/net/ipv4/tcp_default_win_scale This did not help, though. > I have seen similar problems due to high sequence numbers on the tcp > packets on some adsl routers. Took a while to discover that since the > connection misteriously ceased to work from some boxes after some time > transmitting data ok. Looks like some manufacturers such as efficient > networks adsl routers, doesn't follow the standards. > > I'd suggest running tcpdump and doing some observation. Thank you for your reply, I'll do as you suggested. -- Alessandro Selli Tel: 340.839.73.05 http://alessandro.route-add.net