You might try checking the kernel log to see how they are being recognised,
if that doesn't help you might try running the cards in MII mode.

Cheers,
Cohen

At 04:20 PM 5/1/98 -0700, you wrote:
>
>We are running 3Com's 3C905B-TX 100MBIT cards in Dell Pentium II machines.
>We are also running Intel EtherPro Express 100 cards on Pentium Pro
>machines..  Under linux Redhat 5.0 the 3COM cards work fine when talking to
>other 3com cards at 100MBIT.. however if the 3com card talks to any other
>card (intel or a sun microsystems ethernet card) the machine with the 3com
>card drops to about 4 mbit/s on the 100mbit network... is anyone aware of a
>problem with the 3com drivers under linux? The cards work fine at 10MBIT but
>not at 100..
>
>Any ideas?
>
>Thanks
>
>Brian Fernald
>[EMAIL PROTECTED]
>
>
>
>
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Out the 10Base-T, through the router, over the leased line, off the
bridge, past the firewall... nothing but net!


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