一、交换机DHCP配置举例
[switch]dhcp enable
[switch]ip pool pool1
[switch-ip-pool-pool1]network 10.0.20.0 mask 255.255.255.0
[switch-ip-pool-pool1]dns-list 10.0.10.2
[switch-ip-pool-pool1]gateway-list 10.0.20.1
[switch-ip-pool-pool1]lease day 3
[switch-ip-pool-pool1]quit
[switch]interface vlanif 20
[switch-vlanif20]dhcp select global
[switch-vlanif20]quit
二、路由器DHCP配置
示例一：
<Router>system-view
[Router]interface GigabitEthernet0/0/1
[Router-interface GigabitEthernet0/0/1]ip address 10.10.1.1 255.255.255.128
[Router-interface GigabitEthernet0/0/1]dhcp select global //接口工作在全局地址池模式
[Router-interface GigabitEthernet0/0/1]quit
[Router]ip pool pool1
[Router-ip-pool-pool1]network 10.10.1.0 mask 255.255.255.128
[Router-ip-pool-pool1]excluded-ip-address 10.10.1.2
[Router-ip-pool-pool1]dns-list 10.10.1.2 //设置DNS
[Router-ip-pool-pool1]gateway-list 10.10.1.1 //设置默认网关
[Router-ip-pool-pool1]lease day30 hour 0 minute 0
[Router-ip-pool-pool1]domain-name abc.com
[Router-ip-pool-pool1]quit
示例二：
R1#config t
R1(config)#ip dhcp pool depart1
R1(dhcp-config)#network 192.168.10.0 255.255.255.0
R1(dhcp-config)#default-router 192.168.10.254 255.255.255.0
R1(dhcp-config)#dns-server 192.168.2.253
R1(dhcp-config)#lease 0 12 0
R1(dhcp-config)#exit
R1(config)#ip dhcp pool depart2
R1(dhcp-config)#network 192.168.20.0 255.255.255.0
R1(dhcp-config)#default-router 192.168.20.254 255.255.255.0
R1(dhcp-config)#dns-server 192.168.2.253
R1(dhcp-config)#lease 0 12 0
R1(dhcp-config)#exit
R1(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.10
R1(config)#ip dhcp excluded-address 192.168.10.254 //排除不能分配的IP地址
R1(config)#ip dhcp excluded-address 192.168.20.254