LSW1配置：
[Mux_vlan]dis cu
sysname Mux_vlan
vlan batch 10 20 30
vlan 10 //配置主vlan
mux-vlan
subordinate separate 30 //相互隔离
subordinate group 20 //相互通信
interface GigabitEthernet0/0/1
port link-type access
port default vlan 20
port mux-vlan enable
interface GigabitEthernet0/0/2
port link-type access
port default vlan 20
port mux-vlan enable
interface GigabitEthernet0/0/3
port link-type access
port default vlan 30
port mux-vlan enable
interface GigabitEthernet0/0/4
port link-type access
port default vlan 30
port mux-vlan enable
interface GigabitEthernet0/0/5
port link-type access
port default vlan 10
port mux-vlan enable
原文：http://blog.51cto.com/9616635/2061466