路由器AR1配置：

interface GigabitEthernet0/0/1.1
 dot1q termination vid 10       /dot1q封裝，對應所屬vlan
 ip address 10.1.10.254 255.255.255.0 
 arp broadcast enable    /啟用arp廣播
#
interface GigabitEthernet0/0/1.2
 dot1q termination vid 20    /dot1q封裝，對應所屬vlan
 ip address 10.1.20.254 255.255.255.0 
 arp broadcast enable

LW1配置：

interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 20

interface GigabitEthernet0/0/5
 port link-type trunk
 port trunk allow-pass vlan 10 20

interface GigabitEthernet0/0/10
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094

LW2配置：

interface GigabitEthernet0/0/3
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/4
 port link-type access
 port default vlan 20
#

interface GigabitEthernet0/0/10
 port link-type trunk
 port trunk allow-pass vlan 2 to 4094