3C905B 10/100 card "falls back" to 10MB
Hi
My job is networks and I can give you a major piece of advice,
autonegotiation sucks !
You can run into all sorts of problems especially if both end of a
link try and autonegotiate. I would ask your network manager to hard
set the port on the switch you are connecting to to 100Mb full duplex
and that should fix the problem (I am running Debian Potato on a
laptop with an autonegotiating card set to auto and it works fine like
this also RedHat 6.0 with a 3c509 set to auto and its fine). If you
can't persuade the network manager to make the change the hard set
your card tp 100Mb using the utils that come with the card.
Pat
Bill Von Elm writes:
> Hello All,
> I recently had to move a system from a 10MB ethernet segment to a
> 100MB segment. I edited "/etc/init.d/network" to re-assign the IP
> parameters and that worked just fine, but I can't seem to get the card
> (a 3Com 3c905B 10/100) to run at 100MB. During system boot-up the
> "100MB" LED on the card is lit, but as soon as the filesystems are
> mounted the 100MB LED goes out and the 10MB LED comes on. Everything
> else works OK except the speed is wrong. I'm running the Debian 2.1
> distribution and the 2.0.36 kernel.
>
> I'm kind of at a loss as to what to look at here- "ifconfig" does not
> address the speed of the interface and I can't find anything that looks
> like it might (I thought this speed negotiation stuff was done in
> hardware). If anyone can point me in the right direction I'd sure
> appreciate it!
>
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