• SW1配置

vlan data

vl 2

vl 3

exit

config t

int range f1/0 - 15

no sh

int f1/1

switchport access vlan 2

int f1/2

sw ac vl 3

int f1/0

switchport mode trunk

end

show int f1/0 switchport

• SW2配置

vlan data

vl 2

vl 3

exit

config t

int range f1/0 - 15

no sh

int f1/1

switchport access vlan 2

int f1/2

sw ac vl 3

int f1/0

switchport mode trunk

end

show int f1/0 switchport

• 测试

PC1ping PC3

PC2ping PC4

PC1ping PC2(不通就对了)

• 在中继中取消某一VLAN的传输，如VLAN2

conf t

int f1/0

switchport trunk allowed vlan remove 2

end

show int f1/0 switchport