How to change RHEL IP Adress

1. Change in the Graphical console
2. Change in the command line GUI
   system-config-network-tui
   
3. Change the configuration file.
   Editing configuration files which stored in /etc/sysconfig/network-scripts/ directory. Those file separate by network interface name as "ifcfg-eth*".

# Intel Corporation 82573E Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:30:48:56:A6:2E
IPADDR=10.10.29.66
NETMASK=255.255.255.192
ONBOOT=yes



   Save and close the file. Define default gateway (router IP) and hostname in /etc/sysconfig//network file:
   # vi /etc/sysconfig/network
   Append/modify configuration as follows:
   NETWORKING=yes
HOSTNAME=www1.nixcraft.in
GATEWAY=10.10.29.65


   Save and close the file. Restart networking:
   # /etc/init.d/network restart

   Make sure you have correct DNS server defined in /etc/resolv.conf file:
   # vi /etc/resolv.conf
   Setup DNS Server as follows:
   nameserver 10.0.80.11
nameserver 10.0.80.12
nameserver 202.67.222.222