1.路由器设置IP [Huawei]int g0/0/0 [R1-GigabitEthernet0/0/0]ip address 192.168.1.254 24 [R1-GigabitEthernet0/0/0]int g0/0/1 [R1-GigabitEthernet0/0/1]ip address 192.168.2.1 24

[R3]int g0/0/1 [R3-GigabitEthernet0/0/1]ip address 192.168.2.2 24 [R3-GigabitEthernet0/0/1]int g0/0/0 [R3-GigabitEthernet0/0/0]ip address 192.168.3.1 24

[R4]int g0/0/1 [R4-GigabitEthernet0/0/1]ip address 192.168.4.1 24 [R4-GigabitEthernet0/0/1]int g0/0/0 [R4-GigabitEthernet0/0/0]ip address 192.168.3.2.24

2.配置静态路由（默认路由） [R1]ip route-static 0.0.0.0 0.0.0.0 192.168.2.2 [R4]ip route-static 0.0.0.0 0.0.0.0 192.168.3.1

3配置DHCP服务器 3.1创建两个IP地址池 [R1]dhcp enable [R1]ip pool ppp [R1i-ip-pool-ppp]network 192.168.1.0 mask 24 [R1-ip-pool-ppp]gateway-list 192.168.1.254 [R1-ip-pool-ppp]dns [R1-ip-pool-ppp]dns-list 8.8.8.8. [R1-ip-pool-ppp]lease day 1 [R1-ip-pool-ppp]excluded-ip-address 192.168.1.10 192.168.1.20 [R1-ip-pool-ppp]q

[R1]ip pool ooo [R1i-ip-pool-ooo]network 192.168.4.0 mask 24 [R1-ip-pool-ooo]gateway-list 192.168.2.1 [R1-ip-pool-ooo]dns [R1-ip-pool-ooo]dns-list 8.8.8.8 [R1i-ip-pool-ooo]lease day 1

3.2端口启动dhcp 为全局连接 [R1]int g0/0/1 [R1-GigabitEthernet0/0/1]dhcp select global R1]int g0/0/0 [R1-GigabitEthernet0/0/0]dhcp select global

配置中继代理 [relay]dhcp enable [relay]int g0/0/1 [relay-GigabitEthernet0/0/1]dhcp select relay [relay-GigabitEthernet0/0/1]dhcp relay server-ip 192.168.2.1 结果验证