Re: 3Com 3c905c invalid checksum?

[Andrew Morton]

Alex Buell wrote:
> 
> The network card in the docking station I plug my Inspirion 8100 in, is a
> 3Com 3c905C Tornado but apparently at boot time when it is identified, it
> prints "***INVALID CHECKSUM 00e0**. I can't ping other boxes on the
> network, nor can I ping other boxes from the laptop. I've double checked
> and triple checked, and the configuration is indeed correct.
> 
> What does the error message INVALID CHECKSUM means?
> 

It means that 3com keep on changing the EEPROM checksum
algorithm and nobody has got around to reverse engineering
it on the 905C.  It's harmless.

Usual routine: check the routing, check the counters
in `ifconfig'.  If it's really a driver problem, please
send me a description as per the final section of
Documentation/networking/vortex.txt

-