3层交换技术

发布时间:2019-08-25 09:33:53编辑:auto阅读(1716)

     

    我们知道不同的vlan之间要相互的通行必须要借用第三层,也就是网络层,可以路由器也可以是三层的交换机。三层拓扑图

    1-6

    创建Vlan并设置为服务端

    Switch>en

    Switch#vlan database

    Switch(vlan)#vlan 2 name vlan2

    VLAN 2 added:

    Name:vlan2

    Switch(vlan)#vlan 3 name vlan3

    VLAN 3 added:

    Name:vlan3

    Switch(vlan)#vtp server

    Switch(vlan)#vtp domain lcl

    VTP domain lcl modified

    Switch(vlan)#exit

    APPLY completed.

    Exiting....

    f0/1为干道

    Switch#conf t

    Enter configuration commands, one per line. End with CNTL/Z.

    Switch(config)#int f0/1

    Switch(config-if)#switchport trunk encapsulation dot1q

    Switch(config-if)#switchport mode trunk

    Switch(config-if)#end

    进入vlan配置ip

    Switch#conf t

    Enter configuration commands, one per line. End with CNTL/Z.

    Switch(config)#ip routing

    Switch(config)#int vlan 2

    Switch(config-if)#ip address 192.168.2.1 255.255.255.0

    Switch(config-if)#no shut

    Switch(config-if)#exit

    Switch(config)#int vlan 3

    Switch(config-if)#ip address 192.168.3.1 255.255.255.0

    Switch(config-if)#no shut

    Switch(config-if)#exit

    设置为客户端

    Switch>en

    Switch#vlan database

    Switch(vlan)#vtp client

    Switch(vlan)#vtp domain lcl

    Changing VTP domain from NULL to lcl

    Switch(vlan)#exit

    APPLY completed.

    Exiting....

    f0/1为干道

    Switch#conf t

    Enter configuration commands, one per line. End with CNTL/Z.

    Switch(config)#int f0/1

    Switch(config-if)#switchport trunk encapsulation dot1q

    Switch(config-if)#switchport mode trunk

    Switch(config-if)#end

    端口加入Vlan

    Switch#conf t

    Enter configuration commands, one per line. End with CNTL/Z.

    Switch(config)#int f0/2

    Switch(config-if)#switchport mode access

    Switch(config-if)#switchport access vlan 2

    Switch(config-if)#exit

    Switch(config)#int f0/2

    Switch(config-if)#exit

    Switch(config)#int f0/3

    Switch(config-if)#switchport mode access

    Switch(config-if)#switchport access vlan 3

    Switch(config-if)#end

    结果两个不同vlan的两台PCping成功

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