From mboxrd@z Thu Jan 1 00:00:00 1970 From: ulrich schwarz Date: Thu, 02 Jan 2003 09:04:08 +0000 Subject: Re: [LARTC] speed problem Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Vishal Gandhi Kommineni wrote: > Hi all, > I have a pecular problem > > i have a setup of 3 linux boxes and a windows pc > > boxes A, B, C and a pc are connected in the follwoing sequence > > > A (eth0)< ----> (eth0) B (eth1)< -----> (eth0) C (eth1) <------> PC > > > 1) using ftp I am able to transfer data from B to A both ways, the > speeds are around 1.2e > 2) I am also able to transfer similarly to and fro from B to PC via box C > > but > > 3) when i am trying to ftp data from A to PC via B and C to and fro the > data transfer speed has drastically come down, > Please note that in both B and C ipforward is enabled. > > Kindly help > > Thanks in advance, > > Vishal Gandhi hi vishal, the first thing i'd like to check is if the ethernet cards are running in full- or half-duplex mode. AFAIK running one card in half-duplex mode and the other trying to force full-duplex mode can lead to lots of collisions, so this could be a reason for slow speed. you could use a hub or switch instead of the crossover cable and watch the collision LED (if there is any *g*). greetings, ulric -- ulrich schwarz, computing center, university of ulm, germany _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/