Daily Archives: November 24, 2004

Ethernet problems?

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If you see your syslog populated with similar messages like this: (istanbul is the name of the machine)

Nov 24 06:31:54 istanbul kernel: eth0: Transmit error, Tx status register 82.
Nov 24 06:31:54 istanbul kernel: Probably a duplex mismatch.  
See Documentation/networking/vortex.txt
Nov 24 06:31:54 istanbul kernel:   Flags; bus-master 1,
 dirty 801945(9) current 801945(9)
Nov 24 06:31:54 istanbul kernel:   Transmit list 00000000 vs. c46c6440.
Nov 24 06:31:54 istanbul kernel:   0: @c46c6200  length 800000b2 status 0c0100b2
Nov 24 06:31:54 istanbul kernel:   1: @c46c6240  length 80000042 status 00010042
Nov 24 06:31:54 istanbul kernel:   2: @c46c6280  length 80000042 status 00010042
Nov 24 06:31:54 istanbul kernel:   3: @c46c62c0  length 80000082 status 0c010082
Nov 24 06:31:54 istanbul kernel:   4: @c46c6300  length 800005ea status 0c0105ea
Nov 24 06:31:54 istanbul kernel:   5: @c46c6340  length 800005ea status 0c0105ea
Nov 24 06:31:54 istanbul kernel:   6: @c46c6380  length 800005ea status 0c0105ea
Nov 24 06:31:54 istanbul kernel:   7: @c46c63c0  length 800005ea status 0c0105ea
Nov 24 06:31:54 istanbul kernel:   8: @c46c6400  length 800005ea status 8c0105ea
Nov 24 06:31:54 istanbul kernel:   9: @c46c6440  length 800000d2 status 0c0100d2
Nov 24 06:31:54 istanbul kernel:   10: @c46c6480  length 80000052 status 0c010052
Nov 24 06:31:54 istanbul kernel:   11: @c46c64c0  length 80000072 status 0c010072
Nov 24 06:31:54 istanbul kernel:   12: @c46c6500  length 80000082 status 0c010082
Nov 24 06:31:54 istanbul kernel:   13: @c46c6540  length 80000252 status 0c010252
Nov 24 06:31:54 istanbul kernel:   14: @c46c6580  length 80000282 status 0c010282
Nov 24 06:31:54 istanbul kernel:   15: @c46c65c0  length 80000082 status 0c010082

as suggested check Documentation/networking/vortex.txt of course ; )

Generally the problem is that your host is running on Half-Duplex mode where the others in the same network is running with Full-Duplex mode:

So issue a:

mii-tool -F 10baseT-FD

or

mii-tool -F 100baseTx-FD

Depending on your type of connection ; )

As the document says:

As a last resort, you can force the 3c59x driver into full-duplex mode with 
         options 3c59x full_duplex=1