Network Card replacement
- Shut the system down. Replace the card physically and start the machine.
- ifconfig would not show up the new interface. If it shows up that you might be all good and skip next steps.
- ifconfig -a . Find out the new interface that has been created for the new card. Say this is eth1.
- Open up a file /etc/sysconfig/network-scripts/ifcfg-eth1.
- The file should be similar to other interface file, if exists, say ifcfg-eth0. It's contents would look like
You can find details of all possible configurations in the CentOS manual.
Then restart the network service. service network restart.
- ifconfig should now show up the new interface eth1.
If the interface names are not coming up correctly, you might want to update the
Refer to http://www.linuxfromscratch.org/blfs/view/development/chapter07/network.html
Further reading (just in case) : http://jeeva.us/Linux/Network