SW1：

<Huawei>system-view 

[Huawei]sysname SW1

[SW1]VLAN batch 10 20  //批量划分vlan

[SW1]interface GigabitEthernet0/0/1

[SW1-GigabitEthernet0/0/1]port link-type access    //设置为access口，access口允许单个vlan通过

[SW1-GigabitEthernet0/0/1]port default vlan 10
[SW1-GigabitEthernet0/0/1]int g0/0/3

[SW1-GigabitEthernet0/0/3]port link-type access   

[SW1-GigabitEthernet0/0/3]port default vlan 20

[SW1-GigabitEthernet0/0/3]quit

[SW1-GigabitEthernet0/0/2]port link-type trunk    //设置为trunk口，trunk口允许多个vlan通过

[SW1-GigabitEthernet0/0/2]port trunk allow-pass vlan 10 20    //trunk口允许vlan 10 20通过

SW2：

<Huawei>system-view 
[Huawei]sysname SW2
[SW2]vlan batch 10 20
[SW2]int g0/0/2
[SW2-GigabitEthernet0/0/2]port link-type access
[SW2-GigabitEthernet0/0/2]port default vlan 10
[SW2-GigabitEthernet0/0/2]int g0/0/3
[SW2-GigabitEthernet0/0/3]port link-type access
[SW2-GigabitEthernet0/0/3]port default vlan 20
[SW2-GigabitEthernet0/0/3]int g0/0/1
[SW2-GigabitEthernet0/0/1]port link-type trunk
[SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan 10 20

 结果：