实验平台cisco packet tracert5.2
拓扑图

1-建立vlan
Sw1:交换机1
En
Conf t
Vlan 2
Name student
Vlan 3
Name teacher

 

Sw2: 交换机2
En
Conf t
Vlan 2
Name student
Vlan 3
Name teacher

2-端口加入vlan
Sw1:交换机1
Int fa0/1
Swi mo acc
Swo acc vlan 2
Int fa0/2
Swi mo acc
Swi acc vlan 3

 

Sw2: 交换机2
Int fa0/1
Swi mo acc
Swo acc vlan 2
Int fa0/2
Swi mo acc
Swi acc vlan 3

此时pc1,2,3,4,5互相还不能ping通

3-1配置fa0/24为trunk模式
Sw1:
Int fa0/24
Swi mo tr
Swi no

Sw2:
Int fa0/24
Swi mo tr
Swi no

3-2 配置trunk端口允许运行的vlan
sw1：
Int fa0/24
Swi trunk allowed vlan all

sw2:
Int fa0/24
Swi trunk allowed vlan all

此时pc1,3互通，pc2,4互通，pc5与其他不通

3-3配置fa 0/24的本地vlan改为vlan2
Sw1：
Int fa 0/24
Swi tru native vlan 2

 

Sw2:
Int fa 0/24
Swi tru native vlan 2

此时pc2,4互通；pc1,5,3互通


查看vlan：sh vlan或sh vlan bri
如需改变封装：Swi trunk enca dot1q
查看主干链路端口状态：sh int fa0/24 switchport
查看trunk允许传输的vlan：show interfaces tr
查看交换机运行配置文件： Sh run


查看flash空间
sw1#dir 
Directory of flash:/
1  -rw-     3058048    <no date>  c2950-i6q4l2-mz.121-22.EA4.bin
2  -rw-         676    <no date>  vlan.dat
64016384 bytes total (60957660 bytes free)