TRUNK
SW1基本配置（f0/1加入vla2,f0/2加入vla3,f0/24为中继链路接口）
Switch>en
Switch#vlan database
Switch(vlan)#vlan 2
Switch(vlan)#vlan 3
Switch(vlan)#exit
Switch#conf t
Switch(config)#int f0/1
Switch(config-if)#switchport access vlan 2
Switch(config-if)#exit
Switch(config)#int f0/2
Switch(config-if)#switchport access vlan 3
Switch(config-if)#end
SW2基本配置（f0/1加入vla2,f0/2加入vla3,f0/24为中继链路接口）
Switch>en
Switch#vlan database
Switch(vlan)#vlan 2
Switch(vlan)#vlan 3
Switch(vlan)#exit
Switch#conf t
Switch(config)#int f0/1
Switch(config-if)#switchport access vlan 2
Switch(config-if)#exit
Switch(config)#int f0/2
Switch(config-if)#switchport access vlan 3
Switch(config-if)#end
Switch#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/3, Fa0/4, Fa0/5, Fa0/6
Fa0/7, Fa0/8, Fa0/9, Fa0/10
Fa0/11, Fa0/12, Fa0/13, Fa0/14
Fa0/15, Fa0/16, Fa0/17, Fa0/18
Fa0/19, Fa0/20, Fa0/21, Fa0/22
Fa0/23, Fa0/24
2 VLAN0002 active Fa0/1
3 VLAN0003 active Fa0/2
创建trunk模式的中继链路
Switch#conf t
Switch(config)#int f0/24
Switch(config-if)#switchport mode trunk
Switch#show run
interface FastEthernet0/1
switchport access vlan 2
!
interface FastEthernet0/2
switchport access vlan 3
!
interface FastEthernet0/24
switchport mode trunk
