跨交换机VLAN配置案例

1实验目的目的

掌握VLAN的概念、创建VLAN的方法、把交换机端口划分到VLAN中、Trunk的配置与调试方法

2实验拓扑图

3实验步骤

1. 在交换机S1,S2上创建VLAN,并把端口划分到相应的VLAN中

（1）配置交换机S1

S1(config)#vlan 2 //创建vlan

S1(config)#name VLAN2 //命名vlan

S1(config)#exit            

S1(config)#vlan 3

S1(config)#name VLAN3

S1(config)#exit

S1(config)#interface fastEthernet0/1

S1(config-if)switchport mode access//设置端口类型为access

S1(config-if)switchport access vlan 2//把端口加入到vlan中

S1(config)#interface fastEthernet0/2

S1(config-if)switchport mode access

S1(config-if)switchport access vlan 3

  (2)配置交换机S2

S1(config)#vlan 2

S1(config)#name VLAN2

S1(config)#exit

S1(config)#vlan 3

S1(config)#name VLAN3

S1(config)#exit

S1(config)#interface fastEthernet0/3

S1(config-if)switchport mode access

S1(config-if)switchport access vlan 3

S1(config)#interface fastEthernet0/4

S1(config-if)switchport mode access

S1(config-if)switchport access vlan 2

1. 配置Trunk

(1)配置交换机S1

S1(config)#interface fastEthernet0/13 

S1(config-if)# switchporttrunk encanpsulation dot1q

//配置端口封装类型

S1(config-if)#switchport mode trunk

//配置端口模式为trunk

S1(config-if)#switchport trunk native vlan 199

//在trunk链路上配置native vlan 默认native vlan为vlan1

S1(config-if)#switchport nonegotiate

//关闭dtp自动协商功能

S1(config-if-range)# switchport trunk allowed vlan 1-3

//trunk只允许VLAN1-VLAN3的数据包通过（默认是允许所有通过）

(2)配置交换机S2

S1(config)#interface fastEthernet0/13 

S1(config-if)# switchporttrunk encanpsulation dot1q

S1(config-if)#switchport mode trunk

S1(config-if)#switchport trunk native vlan 199

S1(config-if)#switchport nonegotiate

S1(config-if-range)# switchport trunk allowed vlan 1-3

4实验调试

S1#show interfaces trunk//查看端口Trunk信息

S1#show interfaces fastEthernet 0/13 switchport//查看交换端口信息

标签：vlan,switchport,S1,VLAN,access,案例,交换机,trunk,config
来源： https://blog.csdn.net/weixin_45710567/article/details/110816225