文章介绍：使用eNSP部署一台交换机，一台路由器，俩台PC，演练单臂路由实验，并完成子接口配置，完成跨网段、跨VLAN的三层互通。

一、eNSP下载

HUAWEI eNSP

二、实验拓扑

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三、设备配置

3.1、拓扑一

3.1.1、PC1

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3.1.2、PC2

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3.1.3、SW1

#
sysname SW1
#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
 description to-AR1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
 description to-PC1
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/3
 description to-PC2
 port link-type access
 port default vlan 20
#

3.1.3、AR1

#
 sysname AR1
#
interface GigabitEthernet0/0/0.10
 description to-vlan10
 dot1q termination vid 10
 ip address 10.1.10.1 255.255.255.0 
 arp broadcast enable
#
interface GigabitEthernet0/0/0.20
 description to-vlan20
 dot1q termination vid 20
 ip address 10.1.20.1 255.255.255.0 
 arp broadcast enable
#

3.1.4、测试

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3.2、拓扑二

3.2.1、PC3

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3.2.2、PC4

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3.2.3、SW2

#
sysname SW2
#
vlan batch 30 40
#
dhcp enable
#
interface Vlanif30
 ip address 10.1.30.1 255.255.255.0
 dhcp select interface
 dhcp server dns-list 223.5.5.5 114.114.114.114
#
interface Vlanif40
 ip address 10.1.40.1 255.255.255.0
 dhcp select interface
 dhcp server dns-list 223.5.5.5 114.114.114.114
#
interface GigabitEthernet0/0/1
 description to-PC3
 port link-type access
 port default vlan 30
#
interface GigabitEthernet0/0/2
 description to-PC4
 port link-type access
 port default vlan 40
#

3.2.4、PC获取IP检查

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3.2.5、测试

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