要求：1.PC1和PC2不能互相访问，但是都能访问PC3
SW1配置：vlan batch 10 20 100
interface Ethernet0/0/1
port hybrid pvid vlan 10
port hybrid untagged vlan 10 100
#
interface Ethernet0/0/2
port hybrid pvid vlan 20
port hybrid untagged vlan 20 100
#
interface Ethernet0/0/3
port hybrid tagged vlan 10 20 100
SW2配置：vlan batch 10 20 100
interface Ethernet0/0/1
port hybrid pvid vlan 100
port hybrid untagged vlan 10 20 100
#
interface Ethernet0/0/2
#
interface Ethernet0/0/3
port hybrid tagged vlan 10 20 100
注：PC1地址：192.168.1.1/24 ;PC2192.168.1.2/24; PC3192.168.1.3/24