1, use setup command:

setup

then edit network configuration

2, or manual configuration:

cd /etc/sysconfig/network-scripts
vi ifcfg-eth0

edit the file

DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
HWADDR=00:22:19:58:c2:f4
TYPE=Ethernet
NETMASK=255.255.255.248
IPADDR=xxx.xxx.xxx.xxx
GATEWAY=xxx.xxx.xxx.xxx

3, Edit DNS server information

vi /etc/resolv.conf

search com
nameserver 205.134.190.4
nameserver 205.134.162.20