实验拓扑图

1，配置sw2交换机

<Huawei>sys
[Huawei]sysname SW2
[SW2]vlan batch 10 20  ##创建vlan10 20
[SW2]int e0/0/2
[SW2-Ethernet0/0/2]port link-type access   ##设置access
[SW2-Ethernet0/0/2]port default vlan 10    ##将接口放到vlan中
[SW2-Ethernet0/0/2]un sh
[SW2-Ethernet0/0/2]int e0/0/3
[SW2-Ethernet0/0/3]port link-type access
[SW2-Ethernet0/0/3]port default vlan 20
[SW2-Ethernet0/0/3]un sh
[SW2-Ethernet0/0/3]int e0/0/1
[SW2-Ethernet0/0/1]port link-type trunk      ##设置trunk
[SW2-Ethernet0/0/1]port trunk allow-pass vlan all   ##允许所有的vlan通过
[SW2-Ethernet0/0/1]un sh
[SW2-Ethernet0/0/1]int g0/0/1
[SW2-GigabitEthernet0/0/1]port link-type trunk  
[SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all 
[SW2-GigabitEthernet0/0/1]un sh

2，配置sw3交换机（同sw2一样配置）

<Huawei>sys   
[Huawei]sysname SW3   
[SW3]vlan batch 10 20  
[SW3]int e0/0/2 
[SW3-Ethernet0/0/2]port link-type access 
[SW3-Ethernet0/0/2]port default vlan 10
[SW3-Ethernet0/0/2]un sh
[SW3-Ethernet0/0/2]int e0/0/3
[SW3-Ethernet0/0/3]port link-type access    
[SW3-Ethernet0/0/3]port default vlan 20
[SW3-Ethernet0/0/3]un sh
[SW3-Ethernet0/0/3]int e0/0/1
[SW3-Ethernet0/0/1]port link-type trunk 
[SW3-Ethernet0/0/1]port trunk allow-pass vlan all 
[SW3-Ethernet0/0/1]un sh

3，配置sw1三层交换机

<Huawei>sys
[Huawei]sysname SW1
[SW1]vlan batch 10 20 1000
[SW1]int g0/0/1
[SW1-GigabitEthernet0/0/1]port link-type trunk 
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all 
[SW1-GigabitEthernet0/0/1]un sh
[SW1-GigabitEthernet0/0/1]int g0/0/2   
[SW1-GigabitEthernet0/0/2]port link-type access   
##三层交换连接路由的不能配置trunk
[SW1-GigabitEthernet0/0/2]port default vlan 1000
[SW1-GigabitEthernet0/0/2]un sh
[SW1-GigabitEthernet0/0/2]q
[SW1]int vlanif 10   ##进入逻辑接口
[SW1-Vlanif10]ip add 192.168.10.1 24  ##设置网关
[SW1-Vlanif10]int vlanif 20
[SW1-Vlanif20]ip add 192.168.20.1 24
[SW1]int vlanif 1000
[SW1-Vlanif1000]ip add 11.0.0.1 30
[SW1-Vlanif1000]q
[SW1]ip route-static 0.0.0.0 0.0.0.0 11.0.0.2  ##设置默认路由，向上默认，向下静态

4，配置R1路由

<Huawei>sys
[Huawei]sysname R1
[R1]int g0/0/0   ##设置接口的ip地址
[R1-GigabitEthernet0/0/0]ip add 11.0.0.2 30
[R1-GigabitEthernet0/0/0]un sh
[R1-GigabitEthernet0/0/0]int loopback 0  ##进入回环接口，设置ip
[R1-LoopBack0]ip add 1.1.1.1 30
[R1-LoopBack0]q
[R1]ip route-static 192.168.10.0 24 11.0.0.1 ##设置静态路由
[R1]ip route-static 192.168.20.0 24 11.0.0.1

5，测试全网互通性

谢谢阅读！