思科模擬器CIsco　Packet　Tracer路由器單臂路由配置

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1.技術原理
單臂路由：是爲實現 VLAN 間通信的三層網絡設備路由器，它只需要一個以太網，通過創建子接口可以承擔所有 VLAN 的網關，而在不同的 VLAN 間轉發數據。
2.拓撲圖

2.配置PC
PC3
IP: 192.168.1.2
Submask: 255.255.255.0
Gageway:192.168.1.1

PC4
IP: 192.168.2.2
Submask: 255.255.255.0
Gageway:192.168.2.1

3.配置交換機

witch>
Switch>en
Switch#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#vlan 2
Switch(config-vlan)#vlan 3
Switch(config-vlan)#int f0/2
Switch(config-if)#switchport access vlan 2
Switch(config-if)#int f0/3
Switch(config-if)#switchport access vlan 3
Switch(config-if)#int f0/1
Switch(config-if)#switchport mode trunk 

4.配置路由器

Router>en
Router#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int g0/0
Router(config-if)#no shu

Router(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up

Router(config-if)#int g0/0.1
Router(config-subif)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0.1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.1, changed state to up

Router(config-subif)#encapsulation dot1Q 2
Router(config-subif)#ip add 192.168.1.1 255.255.255.0
Router(config-subif)#
Router(config-subif)#int g0/0.2
Router(config-subif)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0.2, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.2, changed state to up

Router(config-subif)#encapsulation dot1Q 3
Router(config-subif)#ip add 192.168.2.1 255.255.255.0

5.網絡測試
PC3 Ping PC4
Ping 192.168.2.2 reply