Configure Network Interface - Linux

1. Create/edit a file /etc/sysconfig/network-scripts/ifcfg-eth0 containing:

   DEVICE=eth0
   BOOTPROTO=none
   ONBOOT=yes
   NETMASK=255.255.255.0 
   
   IPADDR=192.168.0.12
   USERCTL=no
   

2. Create/edit the route configuration file /etc/sysconfig/network-scripts/route-eth0:

   default 192.168.0.1 dev eth0