~ Activate the network card in centos ~

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

按Insert 變edit mode

DEVICE=eth0                         //網路卡名稱
BOOTPROTO=static                    //BOOTP協定
BROADCAST=192.168.202.255           //廣播 IP Address
HWADDR=00:15:C5:E5:99:B1            //MAC Address
IPADDR=192.168.202.100              //IP Address
NETMASK=255.255.254.0               //Netmask (遮罩)
NETWORK=192.168.202.0               //網段
ONBOOT=no                        //開機自動啟動

將最後一行變成

ONBOOT=yes                        //開機自動啟動

reboot