PC5:ip:1.1.1.1 netmask:255.0.0.0 gateway:1.1.1.254
PC7:ip:2.1.1.1 netmask:255.0.0.0 gateway:2.1.1.254
SW: [Huawei]int e0/0/2
[Huawei-Ethernet0/0/2]port link-type trunk
[Huawei-Ethernet0/0/2]port trunk allow-pass vlan 10 20
[Huawei]int e0/0/1
[Huawei-Ethernet0/0/1]port link-type access (设置为access链路)
[Huawei-Ethernet0/0/1]port default vlan 10(只允许vlan10通过)
Quit
[Huawei]int e0/0/3
[Huawei-Ethernet0/0/3]port link-type access
[Huawei-Ethernet0/0/3]port default vlan 20
[Huawei-Ethernet0/0/3]quit
R5:[Huawei]int Ethernet 0/0/0.10
[Huawei-Ethernet0/0/0.10]dot1q termination vid 10
[Huawei-Ethernet0/0/0.10]ip add 1.1.1.254 8
[Huawei-Ethernet0/0/0.10]arp broad enable
[Huawei-Ethernet0/0/0.10]quit
[Huawei]int e0/0/0.20
[Huawei-Ethernet0/0/0.20]dot1q termination vid 20
[Huawei-Ethernet0/0/0.20]ip add 2.1.1.254 8
[Huawei-Ethernet0/0/0.20]arp broad enable