介绍
实验拓扑
我们主要配置Switch2的Gi0/3接口和Router的Gi0/0接口，其他配置请参考https://juejin.cn/post/7416575135451594802
配置Switch2的Gi0/3
Switch2#configure
Switch2(config)#interface Gi0/3
Switch2(config-if)#switchport mode trunk
Switch2(config-if)#switchport trunk encapsulation dot1q
配置Router的Gi0/0
Router#configure
Router(config)#interface G0/0
Router(config-if)#no shutdown
Router(config-if)#exit
# 配置子接口
Router(config)#interface G0/0.10
Router(config-subif)#encapsulation dot1Q 10
Router(config-subif)#ip address 192.168.10.254 255.255.255.0
Router(config-subif)#no shutdown
Router(config-subif)#exit
Router(config)#interface G0/0.20
Router(config-subif)#encapsulation dot1Q 20
Router(config-subif)#ip address 192.168.20.254 255.255.255.0
Router(config-subif)#no shutdown
查看下路由器端口的IP地址
Router#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 unassigned YES unset up up
GigabitEthernet0/0.10 192.168.10.254 YES manual up up
GigabitEthernet0/0.20 192.168.20.254 YES manual up up
GigabitEthernet0/1 unassigned YES unset administratively down down
GigabitEthernet0/2 unassigned YES unset administratively down down
GigabitEthernet0/3 unassigned YES unset administratively down down
配置PC的网关
PC3和PC5的网关要配置为192.168.10.254
bash-5.1# ip route add default via 192.168.10.254
PC4和PC6的网关要配置为192.168.20.254
bash-5.1# ip route add default via 192.168.20.254
