vlan配置以及三层交换

拓扑图：

vlan配置：

对于交换机A:

<switchA>system-view

[switchA]vlan 2

[switchA-vlan2]port e0/2 to e0/4

[switchA-vlan2]vlan 3

[switchA-vlan3]port e0/5 to e0/7

[switchA-vlan3]quit

[switchA]int e0/8

[switchA-interface0/8]port link-type trunk

[switchA-interface0/8]port trunk permit vlan all

对于交换机B：

<switchB>system-view

[switchB]vlan 2

[switchB-vlan2]port e0/2 to e0/4

[switchB-vlan3]quit

[switchB]int e0/8

[switchB-interface0/8]port link-type trunk

[switchB-interface0/8]port trunk permit vlan all

检验：

pcA ping pcC 通

pcB ping pcC 不同

pcA ping pcB 不同

由此可知，相同的vlan可以相互通信，不同的vlan不可以通信。

三层交换：

对于交换机A：

<switchA>system-view

[switchA]vlan 2

[switchA-vlan2]port e0/2 to e0/4

[switchA-vlan2]int vlan 2

[switchA-vlan-interface2]ip address 192.168.1.1

[switchA-vlan2]vlan 3

[switchA-vlan3]port e0/5 to e0/7

[switchA-vlan-interface3]ip address 192.168.2.1

[switchA-vlan3]quit

[switchA]int e0/8

[switchA-interface0/8]port link-type trunk

[switchA-interface0/8]port trunk permit vlan all

对于交换机B：

<switchB>system-view

[switchB]vlan 2

[switchB-vlan2]port e0/2 to e0/4

[switchB-vlan2]int vlan 2

[switchB-vlan-interface2]ip address 192.168.1.3

[switchB-vlan2]quit

[switchB]int e0/8

[switchB-interface0/8]port link-type trunk

[switchB-interface0/8]port trunk permit vlan all

检验：

pcA、pcB和pcC相互访问