三层交换机sw1配置，划分三个vlan，3个接入端口分别允许各自vlan通过，一个骨干端口允许所有vlan通过。
<Huawei>undo terminal monitor
<Huawei>sy
[Huawei]sysname sw1
[sw1]vlan batch 10 20 30
[sw1]interface g0/0/1
[sw1-GigabitEthernet0/0/1]port link-type access
[sw1-GigabitEthernet0/0/1]port default vlan 10
[sw1-GigabitEthernet0/0/1]q
[sw1]interface g0/0/2
[sw1-GigabitEthernet0/0/2]port link-type access
[sw1-GigabitEthernet0/0/2]port default vlan 20
[sw1-GigabitEthernet0/0/2]q
[sw1]interface g0/0/3
[sw1-GigabitEthernet0/0/3]port link-type access
[sw1-GigabitEthernet0/0/3]port default vlan 30
[sw1-GigabitEthernet0/0/3]q
[sw1]interface g0/0/4
[sw1-GigabitEthernet0/0/4]port link-type trunk
[sw1-GigabitEthernet0/0/4]port trunk allow-pass vlan all
[sw1-GigabitEthernet0/0/4]return
<sw1>save路由器R1的配置，在物理端口g0/0/0上三个逻辑子接口.1 .2 .3，分别设置终结vlan id，分别开启arp广播。至此，3个vlan之间可以互相通信。
<Huawei>undo terminal monitor
<Huawei>sy
[Huawei]sysname r1
[r1]interface g0/0/0.1
[r1-GigabitEthernet0/0/0.1]ip address 192.168.1.254 24
[r1-GigabitEthernet0/0/0.1]dot1q termination vid 10
[r1-GigabitEthernet0/0/0.1]arp broadcast enable
[r1-GigabitEthernet0/0/0.1]q
[r1]interface g0/0/0.2
[r1-GigabitEthernet0/0/0.2]ip address 192.168.2.254 24
[r1-GigabitEthernet0/0/0.2]dot1q termination vid 20
[r1-GigabitEthernet0/0/0.2]arp broadcast enable
[r1-GigabitEthernet0/0/0.2]q
[r1]interface g0/0/0.3
[r1-GigabitEthernet0/0/0.3]ip address 192.168.3.254 24
[r1-GigabitEthernet0/0/0.3]dot1q termination vid 30
[r1-GigabitEthernet0/0/0.3]arp broadcast enable
[r1-GigabitEthernet0/0/0.3]return
<r1>save
