拓扑：

 LSW1：

vlan batch 10 20
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/3
 port link-type access
 port default vlan 20

AR1：

sysname AR1
#
vlan batch 10 20
#
interface GigabitEthernet0/0/1.10
 dot1q termination vid 10
 ip address 192.168.10.254 255.255.255.0 
 arp broadcast enable
#
interface GigabitEthernet0/0/1.20
 dot1q termination vid 20
 ip address 192.168.20.254 255.255.255.0 
 arp broadcast enable

PC1：

 PC2：

 测试pc1 ping 网关192.168.10.254成功：

 测试pc1 ping PC2 192.168.20.1成功：