install： yum  - y  install dhcp

modify ：

vim  /etc/dhcp/dhcpd.conf

ddns-update-style none;
ignore client-updates;
subnet 10.0.0.0 netmask 255.0.0.0 {
range 10.0.0.100 10.0.0.200;
option domain-name-servers 202.96.209.133,116.228.111.18;
option routers 10.0.0.1;
default-lease-time 600;
max-lease-time 7200;
}

start：service dhcpd  start

prepare：ifconfig  eth0 10.0.0.1 NETMASK 255.0.0.0