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SOLVED!: 3C905B 10/100 card "falls back" to 10MB



Pedro,
  This did the trick!  Many thanks for your help.

-Bill-

Pedro Sanchez wrote:
> 
> Most likely the autonegotiation is not working well, probably because
> the switch your PC is connecting to has this feature disabled. If you
> are loading the driver as a module add the following options when you
> load it
> 
> full_duplex=1 options=12
> 
> to force it to work in 100Mbps Full Duplex. For instance, you can put
> the following line in /etc/modules:
> 
> options 3c59x full_duplex=1 options=12
> 3c59x
> 
> Hope it helps
> 
> --
> Pedro I. Sanchez
> 
> 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!
> 
> Thanks!

-- 
Bill Von Elm
Information Technology Division            
Brookhaven National Laboratory          e-mail: billve@bnl.gov
"Facts do not cease to exist because they are ignored." 
                                         - Aldous Huxley


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