check sum error

[John Dunlap]

The ROM checksum error is because the card is not supported by that
version of the driver.  Try a newer driver, e.g., 0.99L.  Even tho
you may have ordered a 3c905b, you got a 3c905c.  -- John

> 
> 
> The symptoms you describe are, 9 times out of 10,
> caused by a mismatch of duplex modes on your
> network. (That is: the poor performance! Not sure
> about the ROM checksum error!)
> I have written drivers for 3COM (and many others) nics
> for my company's proprietary operating system and 
> have come across quite a few unreliable combinations 
> of 3C90x flavors and switches when it comes to auto-negotiation.
> I'm now advising all our customers to pre-configure
> their nics (and switch ports) to the required speed and duplex mode.
> That seemed to have helped the matter.
> 
> Kind Regards,
> Paul 
> 
> 
> *********** REPLY SEPARATOR  ***********
> 
> On 2/23/00 at 10:47 PM Prof. Andreas Gerber wrote:
> 
> >While using a 3COM 905B: Manufacture date (MM/DD/YY) 7/21/99, division
> >6, product YW
> >I found the following message in /var/log/messages:
> >eth0: 3Com 3c905C Tornado at 0xb800,  ***INVALID CHECKSUM 002f*** 
> >00:50:da:09:30:79, IRQ 10 
> >8K byte-wide RAM 5:3 Rx:Tx split, autoselect/Autonegotiate interface.
> >   MII transceiver found at address 24, status 7809.
> >   Enabling bus-master transmits and whole-frame receives.
> >
> >
> >In principle the interface works but I observe very slow downloads from
> >the computer using samba and ftp.
> >It takes some minutes to get a file from the linux server to a win-nt
> >maschine. Transmitting a file from a NT computer to the linux pc yields
> >good performance (about 6000kb/s).
> >
> >The linux box is operating under suse linux 6.2, kernel 2.2.10
> >
> >Any hints/advices?
> >
> >Thanks in advance
> >
> >Andreas
> >-- 
> >Prof. Andreas Gerber
> >Fachhochschule Biberach, Karlstr. 11, 88400 Biberach
> >+49 7351 582 257 Tel +49 7351 582 299 Fax
> >mailto:gerber@fh-biberach.de http://www.fh-biberach.de
> >-------------------------------------------------------------------
> >To unsubscribe send a message body containing "unsubscribe"
> >to linux-vortex-bug-request@beowulf.org
> 
> 
> 
> -------------------------------------------------------------------
> To unsubscribe send a message body containing "unsubscribe"
> to linux-vortex-bug-request@beowulf.org
> 


-- 
John Dunlap                           University of Washington
Senior Electrical Engineer            Applied Physics Laboratory
dunlap@apl.washington.edu             1013 NE 40th Street
206-543-7207, 543-1300, FAX 543-6785  Seattle, WA   98105-6698
-------------------------------------------------------------------
To unsubscribe send a message body containing "unsubscribe"
to linux-vortex-bug-request@beowulf.org