1.配置lsw1
(1)配置连接用户的接口和对应的vlanif接口
[lsw1]vlan batch 10 20
[lsw1-gigabitethernet0/0/1]port link-type access
[lsw1-gigabitethernet0/0/1]port default vlan 10
[lsw1-gigabitethernet0/0/2]port link-type access
[lsw1-gigabitethernet0/0/2]port default vlan 20
[lsw1]int vlanif 10
[lsw1-vlanif10]ip add 10.1.10.2 24
[lsw1-vlanif10]int vlanif 20
[lsw1-vlanif20]ip add 10.1.20.2 24
(2)配置连接路由器的接口和对应的vlanif接口
[lsw1]vlan batch 100
[lsw1-gigabitethernet0/0/3]port link-type access
[lsw1-gigabitethernet0/0/3]port default vlan 100
[lsw1]int vlanif 100
[lsw1-vlanif100]ip add 10.1.100.2 24
(3)配置缺省路由
[lsw1]ip route-static 0.0.0.0 0.0.0.0 10.1.100.1
(4)配置dhcp服务器
[lsw1]dhcp enable
[lsw1-vlanif10]dhcp select interface
[lsw1-vlanif10]dhcp server dns-list 114.114.114.114
[lsw1-vlanif20]dhcp select interface
[lsw1-vlanif20]dhcp server dns-list 114.114.114.114
2.配置ar1
(1)配置连接交换机的接口对应的ip地址
[ar1-gigabitethernet0/0/1]ip add 10.1.100.1 24
(2)配置连接公网的接口对应的ip地址
[ar1-gigabitethernet0/0/0]ip add 20.1.1.1 24
(3)配置缺省路由和回程路由
[ar1]ip route-static 0.0.0.0 0.0.0.0 20.1.1.2
[ar1]ip route-static 10.1.0.0 255.255.0.0 10.1.100.2
(4)配置nat功能,使内网用户可以访问外网
[ar1]acl 2000
[ar1-acl-basic-2000]rule permit source 10.1.0.0 0.0.255.255
[ar1-gigabitethernet0/0/0]nat outbound 2000
3.配置ar2
[ar2-gigabitethernet0/0/0]ip add 20.1.1.2 24
4.配置pc
5.检查配置结果