no ip address !
interface FastEthernet0/17
switchport access vlan 30
no ip address !
interface FastEthernet0/18
switchport access vlan 30
no ip address !
interface FastEthernet0/19
switchport access vlan 40
no ip address
!--将端口FastEthernet0/6指定至VLAN 40 !
interface FastEthernet0/20
switchport access vlan 40
no ip address !
interface FastEthernet0/21
switchport access vlan 40
no ip address !
interface FastEthernet0/22
switchport access vlan 30
no ip address !
interface FastEthernet0/23
switchport access vlan 40
no ip address !
interface FastEthernet0/24
switchport access vlan 40
no ip address !
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
！--启用802.1Q Trunk封装协议，即在该端口创建Trunk
switchport trunk allowed vlan 1-80
！--允许vlan 1-80在该中继线通讯
switchport mode trunk
！--将该端口设置为Trunk
no ip address !
interface GigabitEthernet0/2
no ip address !
interface Vlan1
ip address 172.16.100.12 255.255.255.0
!--LAN1指定IP地址
no ip route-cache
no ip mroute-cache !
