1、打开eNSP模拟器，添加两台交换机和四台电脑，每台交换机连接两台电脑，连接线使用接口如下图
2、启动LSW1交换机，进入CLI控制台配置命令如下：
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]undo info-center enable #关闭系统信息提示服务。
Info: Information center is disabled.
[Huawei]vlan 2 #创建vlan 2
[Huawei-vlan2]inter Eth 0/0/1 #进入端口分配给vlan 2
[Huawei-Ethernet0/0/1]port link-type access
[Huawei-Ethernet0/0/1]port default vlan 2
[Huawei-Ethernet0/0/1]vlan 3 #创建vlan 3
[Huawei-vlan3] inter eth 0/0/2
[Huawei-Ethernet0/0/2]port link-type access
[Huawei-Ethernet0/0/2]port default vlan 3
[Huawei-Ethernet0/0/2]
3、LSW1交换机配置GE 0/0/1为trunk端口，命令如下：
[Huawei]inter GigabitEthernet 0/0/1
[Huawei-GigabitEthernet0/0/1]port link-type trunk
[Huawei-GigabitEthernet0/0/1]port trunk permit vlan all
^
Error: Unrecognized command found at '^' position.
[Huawei-GigabitEthernet0/0/1]port trunk p
[Huawei-GigabitEthernet0/0/1]port trunk pe
[Huawei-GigabitEthernet0/0/1]port trunk pe
[Huawei-GigabitEthernet0/0/1]port trunk pe
[Huawei-GigabitEthernet0/0/1]port trunk a
[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[Huawei-GigabitEthernet0/0/1]
注意port trunk permit vlan all 和 port trunk allow-pass vlan all命令等价，只是不同型号要使用对应的命令，都是此端口允许所有vlan通过
4、启动LSW2交换机，进入CLI控制台配置命令如下：
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]undo info-center enable
Info: Information center is disabled.
[Huawei]vlan 2
[Huawei-vlan2]inter eth 0/0/1
[Huawei-Ethernet0/0/1]port link-type access
[Huawei-Ethernet0/0/1]port default vlan 2
[Huawei-Ethernet0/0/1]vlan 3
[Huawei-vlan3]inter eth 0/0/2
[Huawei-Ethernet0/0/2]port link-type access
[Huawei-Ethernet0/0/2]port default vlan 3
[Huawei-Ethernet0/0/2]inter g
[Huawei-Ethernet0/0/2]inter gi
[Huawei-Ethernet0/0/2]quit
[Huawei]inter g
[Huawei]inter GigabitEthernet 0/0/1
[Huawei-GigabitEthernet0/0/1]port link-type trunk
[Huawei-GigabitEthernet0/0/1]port trunk a
[Huawei-GigabitEthernet0/0/1]port trunk allow-pass vlan all
解释见上两步LSW1配置
5、右键PC1设置，设置ip地址及子网掩码如下图
6、右键PC2设置，设置ip地址及子网掩码如下图
7、右键PC3设置，设置ip地址及子网掩码如下图
8、右键PC4设置，设置ip地址及子网掩码如下图
9、启动四台电脑后，在PC1命令行
ping 10.5.1.2 网络通，证明LSW1和LSW2通过trunk口连接正常
