二层交换机实现不同vlan通信

发布时间:2020-07-05编辑:admin阅读(0)

    ? 实验需求: PC1属于vlan10 PC2属于vlan20 实现PC1与pc2互通 实验拓扑: ? 实验过程: ? 第一种实现方式: sw1: vlan batch 10 20 interface GigabitEthernet0/0/1 port link-type access port default vlan 10 interface GigabitEthernet0/0/2 port link-type trunk port trunk pvid vlan 10 //默认为1,为了去标签改成10 port trunk allow-pass vlan 2 to 4094 sw2: vlan batch 10 20 interface GigabitEthernet0/0/1 port link-type trunk port trunk pvid vlan 20 //无标签打上20为了能够发到vlan20 port trunk allow-pass vlan 2 to 4094 interface GigabitEthernet0/0/2 port link-type trunk port trunk pvid vlan 10 //无标签打上10为了能够发到vlan10 port trunk allow-pass vlan 2 to 4094 sw3: vlan batch 10 20 interface GigabitEthernet0/0/1 port link-type trunk port trunk pvid vlan 20 //为了去标签 port trunk allow-pass vlan 2 to 4094 interface GigabitEthernet0/0/2 port link-type access port default vlan 20 ? 实验结果: ? 实验原理: Access链路 收包时打标签 pvid 发包时去标签 Trunk链路 发包时如果pvid相同则去标签(默认pvid=1)可以修改,如果pvid不同直接发送不改标签 收包时如果有标签直接收,无标签打标签转发 ? 第二种实现方式:所有链路类型改成access Sw1 interface GigabitEthernet0/0/1 port link-type access port default vlan 10 interface GigabitEthernet0/0/2 port link-type access port default vlan 10 sw2 interface GigabitEthernet0/0/1 port link-type access port default vlan 20 interface GigabitEthernet0/0/2 port link-type access port default vlan 20 sw3 interface GigabitEthernet0/0/1 port link-type access port default vlan 20 interface GigabitEthernet0/0/2 port link-type access port default vlan 20 ? 第三种实现方式:Hybrid类型 Sw1 interface GigabitEthernet0/0/1 port hybrid pvid vlan 10 port hybrid untagged vlan 10 20 interface GigabitEthernet0/0/2 port hybrid tagged vlan 10 20 sw2 interface GigabitEthernet0/0/1 port hybrid tagged vlan 10 20 interface GigabitEthernet0/0/2 port hybrid tagged vlan 10 20 sw3 interface GigabitEthernet0/0/1 port hybrid tagged vlan 10 20 interface GigabitEthernet0/0/2 port hybrid pvid vlan 20 port hybrid untagged vlan 10 20 实验原理: 通过tag和untag确定哪种数据帧通过

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