Dear friend

When I try to see whether my nic card is avilable or not typing command ifconfig.It doesnot show me my NIC card(eth0) information except loop back(lo) information.So how can I activate my nic card in rhel5 so that i can setup ip address in nic card(eth0).But it is to inform you that when i check network device it shows me that it is installed but not active.so please help me to solve this problem.it is very urgent.

Md.Imran Hossain.

I dont know what is the problem.

I dont know how to solve the problem

Posting three times in ten minutes won't get you a response any quicker. If you want "very urgent" attention, those people are called "consultants", and they get paid. We volunteer here.

If it's truly urgent, I suggest you call RedHat since you're paying for their support with enterprise linux. Go through the RedHat network configuration tool, select your interface, and provide it the information it needs, such as an address, gateway, etc.

The redhatEL5 does not detect some of the NIC cards , so in this case u have to install the appropriate cards driver from the card manufacturer site, after getting the driver u have to install according to the manual some of the tips i will show here
if ur network card is realtek 8168(newer one)

#lsmod |grep r8169 -----> redhat detected u r card is r8169 Series
to remove allready existing driver

#rmmod r8169

unpack the driver you downloaded from the site in my case realtek
#tar vjxf <downloaded tarfile.tar.bz2>
#cd< tar file directory>
#make clean modules
#make install
#depmod -a
#modprob r8168 // this is ur installed driver

You can check Ur driver is loaded or not
#lsmod |grep r8168
#ifconfig -a
#ifconfig ethX up X is 0,1,2....