配置AR1为PC2分配地址

dhcp enable

ip pool DHCP_PC2

 network 192.168.20.200 mask 24

 gateway-list 192.168.20.254

 dns-list 192.168.20.100

 excluded-ip-address 192.168.20.100

int g0/0/1

 ip address 192.168.20.254 24

 dhcp select global

 

配置AR1为PC3分配IP地址

dhcp enable

int g0/0/2

 ip address 192.168.30.254 24

 dhcp select interface

 dhcp server dns-list 192.168.30.100

 dhcp server excluded-ip-address 192.168.30.100

 

配置AR1为PC4分配IP地址

dhcp enable

int g0/0/2

 dhcp server static-bind ip-address  192.168.30.200 mac-address 5489-98AE-7862

 

配置AR1、AR2为PC1分配IP地址

AR2（DHCP服务器）

ip pool DHCP_PC1

 gateway-list 192.168.10.254

 network 192.168.10.0 mask 255.255.255.0

 option121 ip-address 10.0.12.0 24 192.168.10.254

interface GigabitEthernet0/0/0

 ip address 10.0.12.2 255.255.255.0

 dhcp select global

ip route-static 192.168.10.0 255.255.255.0 10.0.12.1

AR1（DHCP中继器）

interface GigabitEthernet0/0/0

 ip address 192.168.10.254 255.255.255.0

 dhcp select relay

 dhcp relay server-ip 10.0.12.2