NIC stops working suddenly
 

Hi all,

I have a RHEL 4 update 3 OS, my NIC suddenly stops working and there is no lights flushing (green and orange) if i leave the server for a while (like one hour). But when i do service network restart, life goes back to NIC and all the lights flushing normally and ping works great, but also after a while the NIC dies again.... it needs service network restart every while.

I checked system logs --> kernel: tg3: eth0: link is down.
I also checked the /etc/modprobe.conf, alias eth0 tg3

is the irq number ( set to unknown ) in system-config-network anything to do with this??? or it is a hardware problem or there is any services that blocks the network service after a while, or the OS is frozen and stops the service....

PLZ answer me guys
I really appreciate your help

Regards

Hi mhm,

This may be a stupid suggestion but check out you energy saving configuration on your motherboard bios and disable power savings on the network cards.

BTW what's nic model and make?

ok i will check it, but if its not the problem as i think because the NIC was working properly before what to check next????

Regards

I would check to see if NetworkManager service is running. If so disable it and see if that helps.
To check /sbin/service --status-all | grep NetworkManager
/sbin/service Networkmanager stop
/sbin/chkconfig --level 345 NetworkManager off

Brian

Thanx Brian about your help
In rhel 3.4 there is no service called networkmanager, any additional ideas pls...

thnx

mhm
Regards

That was my only idea. Based that on RHEL 5 which has NetworkManager service. Just to make sure since you wrote back in all lower case for the name NetworkManager, it is capital N and M in the name.

Brian