（Cisco Packet Tracer）单臂路由实验

心已赠人 2022-12-01 09:58 352阅读 0赞

### 单臂路由实验原理图：  ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70][]

VLAN控制广播域，而不同的VLAN间无法通信，一个VLAN等于一个网段，那么不同VLAN间通信如何实现呢？

**单臂路由**！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 1][]

--------------------

### 正式开始实验！ ###

基础配置参考上一篇博客：[https://blog.csdn.net/Drifter\_Galaxy/article/details/108234594][https_blog.csdn.net_Drifter_Galaxy_article_details_108234594]  
仅仅是在上一篇博客的拓扑图上加了个路由器。IP、网关等略作修改，修改步骤不再赘述。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 2][]

在之前的基础上，将第二台交换机新增的 f0/5 接口配置trunk。

sw2(config)#int f0/5
    sw2(config-if)#sw m t
    sw2(config-if)#exit

在路由器上的配置：  
将 f0/0.1 作为vlan10的网关，将 f0/0.2 作为vlan20的网关，开启 f0/0 接口。

Router>ena
    Router#conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    Router(config)#ho R1
    R1(config)#int f0/0.1
    R1(config-subif)#enca
    R1(config-subif)#encapsulation do
    R1(config-subif)#encapsulation dot1Q 10
    R1(config-subif)#ip add 10.1.1.254 255.255.255.0
    R1(config-subif)#no shut
    R1(config-subif)#exit
    R1(config)#int f0/0.2
    R1(config-subif)#enca
    R1(config-subif)#encapsulation do
    R1(config-subif)#encapsulation dot1Q 20
    R1(config-subif)#ip add 20.1.1.254 255.255.255.0
    R1(config-subif)#no shut
    R1(config-subif)#exit
    R1(config)#int f0/0
    R1(config-if)#no shut
    
    R1(config-if)#
    %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
    
    %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
    
    %LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up
    
    %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
    
    %LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up
    
    %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up
    
    R1(config-if)#exit
    R1(config)#do sh ip int b
    Interface              IP-Address      OK? Method Status                Protocol 
    FastEthernet0/0        unassigned      YES unset  up                    up 
    FastEthernet0/0.1      10.1.1.254      YES manual up                    up 
    FastEthernet0/0.2      20.1.1.254      YES manual up                    up 
    FastEthernet0/1        unassigned      YES unset  administratively down down 
    Vlan1                  unassigned      YES unset  administratively down down
    R1(config)#do sh ip route
    Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
           D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
           N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
           E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
           i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
           * - candidate default, U - per-user static route, o - ODR
           P - periodic downloaded static route
    
    Gateway of last resort is not set
    
         10.0.0.0/24 is subnetted, 1 subnets
    C       10.1.1.0 is directly connected, FastEthernet0/0.1
         20.0.0.0/24 is subnetted, 1 subnets
    C       20.1.1.0 is directly connected, FastEthernet0/0.2

全都绿了：  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 3][]来检验一下效果如何》》》（结果是四台机器都互相通的。）  
在10.1.1.2上ping 20.1.1.2：  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 4][]

在10.1.1.1上ping 20.1.1.2  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 5][]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 1]: /images/20221123/44ec1b40925b4b50b83eb7867ca8b30f.png
[https_blog.csdn.net_Drifter_Galaxy_article_details_108234594]: https://blog.csdn.net/Drifter_Galaxy/article/details/108234594
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 2]: /images/20221123/21210f8199ab42e1a5fdbc7629705173.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RyaWZ0ZXJfR2FsYXh5_size_16_color_FFFFFF_t_70 5]: /images/20221123/0997bdc5b1284b18a53770e3d5c646eb.png