检测是否已经按照DHCP：
rpm -q dhcp
安装dhcp:
yum
install dhcp
centos
7 的安装方法：
vim /etc/dhcp/dhcpd.conf
ddns-update-style
interim; /*dhcp支持的dns动态更新方式*/
ignore
client-updates;
/*忽略客户端DNS动态更新*/
subnet
192.168.1.0 netmask 255.255.255.0 {/*作用域网段*/
range
192.168.1.11 192.168.1.100; /*ip地址段范围*/
option
routers
192.168.1.1;
/*网关地址*/
option
subnet-mask 255.255.255.0; /*子网掩码*/
option
domain-name
"koumm.com"; /*域名*/
option
domain-name-servers 192.168.1.1,202.103.24.68; /*dns IP*/
option
broadcast-address 192.168.16.255;/*广播地址*/
default-lease-time
86400;
/*租期1天，秒数*/
max-lease-time
172800;
/*最长租期2天*/
/*绑定pc1主机ip地址配置*/
host pc1
{
hardware ethernet 00:a0:cc:cf:9C:14; /*绑定机MAC地址*/
fixed-address 192.168.1.20; /*最长租期2天*/
}
host pc2 {
hardware ethernet 04:20:c1:f8:37:11;
fixed-address 192.168.1.30;
}
}
——————————————————————————————————————————————————————————
超网配置文件：
ddns-update-style
interim; /*dhcp支持的dns动态更新方式*/
ignore
client-updates; /*忽略客户端DNS动态更新*/
shared-network
mynet {
/*超网作用域选项，共同部分*/
option
subnet-mask
255.255.255.0;
/*子网掩码*/
option
domain-name
"koumm.net";
/*域名*/
option
domain-name-servers 192.168.1.2; /*dns IP*/
option
broadcast-address 192.168.1.255; /*广播地址*/
default-lease-time
86400;
/*租期1天，秒数*/
max-lease-time
172800;
/*最长租期2天*/
subnet
192.168.1.0 netmask 255.255.255.0 {
/*1.0子网段*/
range 192.168.1.11 192.168.1.100;
/*ip地址段范围*/
option routers
192.168.1.1;
/*网关地址*/
/*绑定pc1主机ip地址配置*/
host pc1 {
hardware ethernet 00:a0:cc:cf:9C:14;
fixed-address 192.168.1.20;
}
/*绑定pc2主机ip地址配置*/
host pc2 {
hardware ethernet 04:20:c1:f8:37:11;
fixed-address 192.168.1.30;
}
}
subnet
192.168.2.0 netmask 255.255.255.0 { /*2.0子网段*/
range 192.168.2.10
192.168.2.100; /*ip地址段范围*/
option routers
192.168.2.1;
/*网关地址*/
}
subnet
192.168.3.0 netmask 255.255.255.0 { /*3.0子网段*/
range 192.168.3.10
192.168.3.100; /*ip地址段范围*/
option routers
192.168.3.1;
/*网关地址*/
}
}