添加或者修改VLAN
Switch(config)# vlan vlan-id
Switch(config-vlan)# name vlan-name
删除VLAN
Switch(config)# no vlan vlan-id
查看VLAN
Switch#showvlan
将端口分配给一个VLAN
Switch(config)# interface interface-id
Switch(config)# interface range {port-range}
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan vlan-id
将端口设置成Trunk端口
Switch(config)# interface interface-id
Switch(config-if)#switchport mode trunk
指定Trunk端口的缺省VLAN
Switch(config-if)#switchport trunk native vlan vlan-id
单臂路由的配置
Router(config)# Interface interface-id
Router(config-if)#no ip address
Router(config-if)#exit
Router(config)#interface fastethernetslot-number/interface-number.subinterface-number
Router(config-subif)#encapsulation dot1Q VlanID
Router(config-subif)#ip address ip-address mask
单臂路由配置举例
Router(config)#interface fastEthernet 0/0
Router(config -if)#no ip address
Router(config -if)#exit
Router(config)#interface fastEthernet 0/0.10
Router(config -subif)#encapsulation dot1Q 10
Router(config -subif)#ip address 192.168.10.1 255.255.255.0
Router(config -subif)#exit
Router(config)#interface fastEthernet 0/0.20
Router(config -subif)#encapsulation dot1Q 20
Router(config -subif)#ip address 192.168.20.1 255.255.255.0
Router(config -subif)#exit
Router(config)#interface fastEthernet 0/0.30
Router(config -subif)#encapsulation dot1Q 30
Router(config -subif)#ip address 192.168.30.1 255.255.255.0
Router(config -subif)#end