实验目的：掌握DHCP服务基本配置及DHCP中继服务配置，实现全网互通
拓扑图如下
配置如下
Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#interface f0/0
R1(config-if)#ip address 192.168.10.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#interface s0/0/0
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#service dhcp
R1(config)#ip dhcp pool 1
R1(dhcp-config)#network 192.168.10.0 255.255.255.0
R1(dhcp-config)#default-router 192.168.10.1
R1(dhcp-config)#exit
R1(config)#ip dhcp pool 2
R1(dhcp-config)#network 192.168.20.0 255.255.255.0
R1(dhcp-config)#default-router 192.168.20.1
R1(dhcp-config)#exit
R1(config)#ip dhcp pool 3
R1(dhcp-config)#network 192.168.30.0 255.255.255.0
R1(dhcp-config)#default-router 192.168.30.1
R1(dhcp-config)#exit
R1(config)#ip dhcp excluded-address 192.168.10.1
R1(config)#ip dhcp excluded-address 192.168.20.1
R1(config)#ip dhcp excluded-address 192.168.30.1
R1(config)#route rip
R1(config-router)#version 2
R1(config-router)#no auto-summary
R1(config-router)#network 192.168.1.0
R1(config-router)#network 192.168.10.0
R1(config-router)#network 192.168.20.0
R1(config-router)#network 192.168.30.0
R1(config-router)#end
（2）R2路由器配置：
Router>enable
Router#configure terminal
Router(config)#hostname R2
R2(config)#interface f0/0
R2(config-if)#ip address 192.168.20.1 255.255.255.0
R2(config-if)#ip helper-address 192.168.1.1
R2(config-if)#no shutdown
R2(config-if)#interface s0/0/0
R2(config-if)#ip address 192.168.1.2 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#interface s0/0/1
R2(config-if)#ip address 192.168.2.2 255.255.255.0
R2(config-if)#clock rate 64000
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#route rip
R2(config-router)#version 2
R2(config-router)#no auto-summary
R2(config-router)#network 192.168.1.0
R2(config-router)#network 192.168.2.0
R2(config-router)#network 192.168.20.0
R2(config-router)#network
R2(config-router)#end
（3）R3路由器配置：
Router>enable
Router#configure terminal
Router(config)#hostname R3
R3(config)#interface f0/0
R3(config-if)#ip address 192.168.30.1 255.255.255.0
R3(config-if)#ip helper-address 192.168.1.1
R3(config-if)#no shutdown
R3(config-if)#interface S0/0/0
R3(config-if)#ip address 192.168.2.1 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#route rip
R3(config-router)#version 2
R3(config-router)#no auto-summary
R3(config-router)#network 192.168.2.0
R3(config-router)#network 192.168.30.0
R3(config-router)#network 192.168.1.0
R3(config-router)#end