Low bandwidth with DE500-BA in 100MbpsFD

Darius Buntinas buntinas@cis.ohio-state.edu
Wed Sep 1 12:33:49 1999

I forgot to mention that.  We tried both 0.89 and 0.91 drivers.  I messed
with it some more last night and both drivers give me expected bandwidth
(~80Mbps) when I switch to half duplex (options=3).

I tried the de4x5 driver, but when I rebooted it never came up.  Since I'm
working remotely, I don't know exactly what happened with that.  We'll

Thanks for your response, though.


On Wed, 1 Sep 1999, Greg Lindahl wrote:

> > We have a 16 machine cluster running Linux 2.0.36 SMP.  Half of these
> > machines have DE500-AA cards and the other half have newer DE500-BA cards.
> > We've noticed that the machines with the DE500-BA cards give only around
> > 8Mbps throughput while the others give 80Mbps and up.  We put a DE500-AA
> > card into a machine that had a DE500-BA card and got the expected
> > throughput (80+Mbps).  
> I'd bet that your DE500-BA cards are not correctly autonegotiating 100
> mbits with the 0.89H driver. Upgrade to the latest and try again.
> This is a common problem.
> -- g