一、实验拓扑图：

二、设置接口IP、子网掩码及网关

三、设置二层第一台交换机2SW1的4个接口IP及链路：

[2sw1]vlan batch 10 20
[2sw1]interface e0/0/1			进入e0/0/1接口
[2sw1-Ethernet0/0/1]port link-type access	端口链路类型为接入链路
[2sw1-Ethernet0/0/1]port default vlan 10	端口接入vlan10
[2sw1-Ethernet0/0/1]
[2sw1-Ethernet0/0/1]undo shutdown				关闭消息控制台
[2sw1-Ethernet0/0/1]quit						退出
[2sw1]
[2sw1]
[2sw1]interface e0/0/2			进入e0/0/2接口
[2sw1-Ethernet0/0/2]port link-type access	端口链路类型为接入链路
[2sw1-Ethernet0/0/2]port default vlan 20	端口接入vlan20
[2sw1-Ethernet0/0/2]quit						退出
[2sw1]port-group group-member g0/0/1 g0/0/2		进入g0/0/1 g0/0/2接口
[2sw1-port-group]port link-type trunk		端口链路类型为中继链路
[2sw1-GigabitEthernet0/0/1]port link-type trunk端口链路类型为中继链路
[2sw1-GigabitEthernet0/0/2]port link-type trunk 端口链路类型为中继链路
[2sw1-port-group]port trunk allow-pass vlan 10 20	端口中继链路允许vlan10、20通过
[2sw1-GigabitEthernet0/0/1]port trunk allow-pass vlan 10 20 端口中继链路允许vlan10、20通过
[2sw1-GigabitEthernet0/0/2]port trunk allow-pass vlan 10 20 端口中继链路允许vlan10、20通过
[2sw1-port-group]quit 		退出
[2sw1]interface e0/0/1		进入e0/0/1接口
[2sw1-Ethernet0/0/1]port link-type access	端口链路类型为接入链路
[2sw1-Ethernet0/0/1]port default vlan 10	端口接入vlan10
[2sw1-Ethernet0/0/1]quit	退出
[2sw1]port-group group-member g0/0/1 g0/0/2		进入g0/0/1 g0/0/2接口
[2sw1-port-group]port link-type trunk		端口链路类型为中继链路
[2sw1-GigabitEthernet0/0/1]port link-type trunk	端口链路类型为中继链路
[2sw1-GigabitEthernet0/0/2]port link-type trunk	端口链路类型为中继链路
[2sw1-port-group]port trunk allow-pass vlan 10 20	端口中继链路允许vlan10、20通过
[2sw1-GigabitEthernet0/0/1]port trunk allow-pass vlan 10 20 端口中继链路允许vlan10、20通过

[2sw1-GigabitEthernet0/0/2]port trunk allow-pass vlan 10 20 端口中继链路允许vlan10、20通过

[2sw1-port-group]quit		退出

四、设置二层第二台交换机2SW2的4个接口IP及链路：

<2sw2>system-view			进入视图模式
Enter system view, return user view with Ctrl+Z.
[2sw2]undo info-center enable		关闭消息控制台
Info: Information center is disabled.
[2sw2]sysname 2sw2			重命名为2sw2
[2sw2]vlan batch 10 20		创建vlan 10 20
Info: This operation may take a few seconds. Please wait for a moment...done.
[2sw2]interface e0/0/3							进入e0/0/3接口
[2sw2-Ethernet0/0/3]port link-type access	端口链路类型为接入链路
[2sw2-Ethernet0/0/3]port default vlan 10	端口接入vlan10
[2sw2-Ethernet0/0/3]quit						退出
[2sw2]interface e0/0/4							进入e0/0/4接口
[2sw2-Ethernet0/0/4]port link-type access	端口链路类型为接入链路
[2sw2-Ethernet0/0/4]port default vlan 20	端口接入vlan20
[2sw2-Ethernet0/0/4]quit						退出
[2sw2]
[2sw2]interface g0/0/2							进入g0/0/2接口
[2sw2-GigabitEthernet0/0/2]port link-type trunk	端口链路类型为中继链路
[2sw2-GigabitEthernet0/0/2]port trunk allow-pass vlan 10 20	端口中继链路允许vlan10、20通过
[2sw2-GigabitEthernet0/0/2]quit				退出

五、设置R1路由器的IP地址及封装802.1q(（二层：数据链路层接三层：网络层）需要封装及开启arp广播):

<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]undo info-center enable
Info: Information center is disabled.
[Huawei]sysname R1
[R1]interface g0/0/1.10		进入g0/0/1.10的子接口
[R1-GigabitEthernet0/0/1.10]ip address 192.168.10.1 24 	设置IP192.168.10.1 子网掩码24
[R1-GigabitEthernet0/0/1.10]dot1q termination vid 10	将vlan10的终端封装成iEEE802.1q
[R1-GigabitEthernet0/0/1.10]arp broadcast enable		开启arp广播
[R1-GigabitEthernet0/0/1.10]quit
[R1]interface g0/0/1.20		进入g0/0/1.20的子接口
[R1-GigabitEthernet0/0/1.20]ip address 192.168.20.1 24	设置IP192.168.20.1 子网掩码24
[R1-GigabitEthernet0/0/1.20]dot1q termination vid 20	将vlan10的终端封装成iEEE802.1q
[R1-GigabitEthernet0/0/1.20]arp broadcast enable		开启arp广播
[R1-GigabitEthernet0/0/1.20]undo shutdown				激活端口
Info: Interface GigabitEthernet0/0/1.20 is not shutdown.
[R1-GigabitEthernet0/0/1.20]quit

六、在R1下查看IP接口的详细信息：

 <R1>display ip interface brief		查看IP接口的详细信息
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 4
The number of interface that is DOWN in Physical is 2
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 3

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              unassigned           down       down      
GigabitEthernet0/0/1              unassigned           up         down      
GigabitEthernet0/0/1.10           192.168.10.1/24      up         up        
GigabitEthernet0/0/1.20           192.168.20.1/24      up         up        
GigabitEthernet0/0/2              unassigned           down       down      
NULL0                             unassigned           up         up(s)  

七、PC1ping其他PC：全网互通才对