Troubleshooting NIC Problems

[itsp1965]

Folks, I have been asked to investigate error on a network interface. Running IFCONFIG yields the following;
eth0 Link encap:Ethernet HWaddr 00:17:A4:47:7D:7F
inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.xxx Mask:255.255.252.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:133971096 errors:0 dropped:0 overruns:0 frame:1
TX packets:45799516 errors:2260 dropped:0 overruns:0 carrier:0
collisions:11244426 txqueuelen:1000
RX bytes:578278914 (551.4 Mb) TX bytes:4093962429 (3904.3 Mb)
Interrupt:25

Now it seems that there are transmit errors, now is there another device log available specifically for the NIC (Broadcom extreme) besides checking /var/log/messages which doesn't seem to indicate anything.
I am a newbie in regards to linux troubleshooting so any help would be appreciated. Thanks.

 

[itsp1965]

Actually folks I may have stumbled on the root cause;
Ran mii-tool and noticed that the server was set to auto-negotiate whereas it is hard coded as 100 full on the switch port.
Now question is how to I keep the setting for mii-tool? I read that you modify /etc/rc.d/rc.sysint, but on a reference server that is working correctly, it can't be found in this file.