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-viewEnter 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-viewEnter system view, return user view with Ctrl+Z.[Huawei]undo info-center enableInfo: 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
