SW1配置

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vlan batch 10 20 30 #配置3个vlan ,vlan10 和vlan20用来连接PC ，vlan30用来连接路由器
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dhcp enable #开启dhcp功能
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interface Vlanif10 #配置vlanif接口地址
ip address 192.168.1.254 255.255.255.0
dhcp select relay #指定该接口为中继
dhcp relay server-ip 192.168.12.254 #指出dhcp server的地址
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interface Vlanif20 #配置vlanif接口地址
ip address 192.168.2.254 255.255.255.0
dhcp select relay #指定该接口为中继
dhcp relay server-ip 192.168.12.254 #指出dhcp server的地址
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interface Vlanif30 #配置vlanif接口地址
ip address 192.168.30.1 255.255.255.0
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interface GigabitEthernet0/0/1
port link-type access
port default vlan 10

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interface GigabitEthernet0/0/2
port link-type access
port default vlan 20

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interface GigabitEthernet0/0/3
port link-type access
port default vlan 30

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ip route-static 192.168.12.0 255.255.255.0 192.168.30.254

AR1配置

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interface GigabitEthernet0/0/0
ip address 192.168.30.254 255.255.255.0
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interface GigabitEthernet0/0/1
ip address 192.168.12.1 255.255.255.0
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ip route-static 192.168.0.0 255.255.0.0 192.168.30.1

AR2配置

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dhcp enable
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ip pool vlan10 #建立地址池 vlan10是地址池名字，可以随意自定义
network 192.168.1.0 mask 255.255.255.0 #设置网段
gateway-list 192.168.1.254 #设置网关
dns-list 8.8.8.8 #设置dns
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ip pool vlan20 #建立地址池 vlan20是地址池名字，可以随意自定义
network 192.168.2.0 mask 255.255.255.0 #设置网段
gateway-list 192.168.2.254 #设置网关
dns-list 114.114.114.114 #设置dns

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interface GigabitEthernet0/0/0
ip address 192.168.12.254 255.255.255.0
dhcp select global #从地址池获取地址

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ip route-static 192.168.0.0 255.255.0.0 192.168.12.1
ip route-static 192.168.30.0 255.255.255.0 192.168.12.1