From mboxrd@z Thu Jan 1 00:00:00 1970 From: M Taylor Subject: Re: Poor eth0 through put Date: Mon, 14 Oct 2002 01:18:03 +0100 Sender: linux-hams-owner@vger.kernel.org Message-ID: <20021014011803.A9376@pull.privacy.nb.ca> References: <4.3.2.7.2.20021013172543.00acce70@pop3.norton.antivirus> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <4.3.2.7.2.20021013172543.00acce70@pop3.norton.antivirus>; from jbauerly@grapevine.net on Sun, Oct 13, 2002 at 06:04:48PM -0500 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "John J. Bauerly" Cc: linux-hams@vger.kernel.org On Sun, Oct 13, 2002 at 06:04:48PM -0500, John J. Bauerly wrote: > Hello All; > > Another weekend and no progress. I compiled a new kernel for ax25 installed > and it seems to be ok. However when I went to send the tgz down the lan to > the backup machine, ftp is choking. Any file greater than 25k will not > transfer using ftp. I pinged the machines found a high error rate between > the 2 machines. I brought a third on line and both will work fine to it > under RH6.2. Hum. I booted the 2 problem machines into windows. Ping and > file transfer are ok if one or both are running windows. Don't want to run > windows. Since then I reloaded both machines with RH6.2 orginal kernel. > Checked and made sure which packages are running. The hardware is the same > between the 2 that are failing and the third. To me it does not look like a > hardware problem. It looks like a setup problem in Linux. But I have set > software and bios the same. What else can I check and improve the lan > performance? What NICs are you using? 3Com 3c905b or $2 Realtek 8139 based card? Or some 8-bit WD*008 ISA card? What is the physical wiring? (Cross over cables, a cheap noname hub, or a known good Cisco switch) Have you tested with the newest Red Hat provided kernel for 6.2? (2.2.18-5 I think but am not certain) Check dmesg, /var/log/messages (grep for NET, eth, IP), /var/log/boot.log Try /etc/rc.d/init.d/networking restart and check the log files again for errors/warnings. Check any/all blinking lights on NICs, hubs, switches. Look for collision light(s), and see if it lit often. You could upgrade to RedHat 7.3, or RH 8.0. -ve1mct