root 账户下
1. # vim /etc/sysconfig/network-scripts/ifcfg-eth0
2. change to this
DEVICE=eth0
BOOTPROTO=static
HWADDR=00:E0:4C:EF:74:CA
IPADDR=192.168.1.25
NETMASK=255.255.255.0
ONBOOT=yes
3. restart network
# service network restart
如果开机时网线没有插好, 插好网线后也需要运行一下 service network restart 才能连接好网络