交換機中的vlan和trunk中繼鏈路

 交換機創建VLAN

    switch#vlan database

    switch(vlan)#vlan 2 name vlan2

    switch(vlan)#exit

 交換機刪除VLAN

    switch#=vlan database

    switch（vlan）#no vlan 2

    switch(vlan)#exit

vlan中加入端口

    switch#config terminal

    switch(config)#interface fastethernetf0/1

    switch(config-if)#switchport mode access

    switch(config-if)#switchport access vlan 2

    switch(config-if)#exit

驗證vlan配置

    switch# show vlan brief

    switch#show vlan id

配置vlan trunk

     switch#config terminal

     switch(config)#interface f0/15

     switch(config-if)#switchport mode trunk

  配置接口爲動態模式（企盼/自動）

    (switch(config-if)#switchport mode dynamic desirable/auto)

查看trunk接口模式

     switch#show interface f0/15 switchport

刪除某一vlan從trunk

     switch(config)interface f0/15

     switch(config-if)switchport trunk allowed vlan remove vlan-list

添加某一vlan到trunk

     switch(config)interface f0/15

     switch(config-if)switchport trunk allowed vlan add vlan-list