[root@centos5 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.22
NETMASK=255.255.255.0
NETWORK=192.168.1.0
ONBOOT=yes
HWADDR=08:00:27:77:47:19
[root@centos5 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=centos5.7
GATEWAY=192.168.1.1
