实验拓扑图
交换机1的配置
switch>enable
switch#config terminal
switch(config)#hostname SW1
SW1(config)#no ip domain-lookup
SW1(config)#line console 0
SW1(config-line)#logging synchronous
SW1(config-line)#exec-timeout 0 0
SW1(config)#exit
SW1#vlan database
SW1(vlan)#vtp domain aaa
SW1(vlan)#vtp password BBB
SW1(vlan)#vtp prunning
SW1(vlan)#vlan 10
SW1(vlan)#vlan 20
SW1(vlan)#exit
SW1#config terminal
SW1(config)#interface f0/24
SW1(config-if)#switchport mode trunk
交换机2的配置
switch>enable
switch#config terminal
switch(config)#hostname SW2
SW2(config)#no ip domain-lookup
SW2(config)#line console 0
SW2(config-line)#logging synchronous
SW2(config-line)#exec-timeout 0 0
SW2(config)#exit
SW2#vlan database
SW2(vlan)#vtp domain aaa
SW2(vlan)#mode client
SW2(vlan)#vtp password BBB
SW2(vlan)#vtp prunning
SW2(vlan)#exit
SW2#config terminal
SW2(config)#interface f0/24
SW2(config-if)#switchport mode trunk
SW2(config)#interface f0/23
SW2(config-if)#switchport mode trunk
交换机3上的配置
switch>enable
switch#config terminal
switch(config)#hostname SW3
SW3(config)#no ip domain-lookup
SW3(config)#line console 0
SW3(config-line)#logging synchronous
SW3(config-line)#exec-timeout 0 0
SW3(config)#exit
SW3#vlan database
SW3(vlan)#vtp domain aaa
SW3(vlan)#mode client
SW3(vlan)#vtp password BBB
SW3(vlan)#vtp prunning
SW3(vlan)#exit
SW3#config terminal
SW3(config)#interface f0/24
SW3(config-if)#switchport mode trunk
