【网络设备配置与管理实验三】静态路由的配置

本文详细介绍了一项关于Cisco路由器的静态路由配置实验,包括实验目的、设备需求、拓扑结构、接口IP配置、静态路由配置及验证过程。实验通过配置三台路由器的接口IP地址和静态路由,实现了不同子网间的通信,展示了如何使用show ip route和ping命令验证配置结果。

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一、实验目的

通过本实验,可以掌握以下技能:

  • 配置接口IP地址
  • 配置静态路由
  • 验证静态路由的配置

二、设备需求

  • Cisco路由器3台,分别命名为RouterA、RouterB和RouterC。其中RouterA具有1个以太网接口和1个串行接口;RouterB具有1个以太网接口和2个串行接口;RouterC具有1个以太网接口和1个串行接口
  • 3根交叉线序双绞线,2根串行线
  • 1台access server,及用于反向Telnet的相应电缆
  • 1台带有超级终端程序的PC机,以及Console电缆及转接器

三、拓扑结构及接口IP配置

实验的拓扑结构如图所示。通过2根串行线分别把RouterA和RouterB连接起来,RouterB和RouterC连接起来。

拓扑图

各路由器使用的接口及其编号见图所示的标注,各接口IP地址分配如下:

  • RouterA: F0/0:172.16.11.1 S2/0:172.16.20.1
  • RouterB:F0/0:172.16.10.6 S2/0:172.16.20.2 S3/0:172.16.40.1
  • RouterC: F0/0:172.16.50.1 S2/0:172.16.40.2

四、实验配置文档

1. 基本网络配置

RouterA:

Router>en
Router>enable 
Router#conf
Router#configure ter
Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hos
Router(config)#hostname RouterA-sjt
RouterA-sjt(config)#inte
RouterA-sjt(config)#interface F
RouterA-sjt(config)#interface FastEthernet 0/0
RouterA-sjt(config-if)#ip address 172.16.11.1 255.255.255.0
RouterA-sjt(config-if)#no shu
RouterA-sjt(config-if)#no shutdown 
RouterA-sjt(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
RouterA-sjt(config-if)#exit
RouterA-sjt(config)#inte
RouterA-sjt(config)#interface se
RouterA-sjt(config)#interface serial 2/0
RouterA-sjt(config-if)#ip ad
RouterA-sjt(config-if)#ip address 172.16.20.1 255.255.255.0
RouterA-sjt(config-if)#no shut
RouterA-sjt(config-if)#no shutdown 
%LINK-5-CHANGED: Interface Serial2/0, changed state to down
RouterA-sjt(config-if)#exit
RouterA-sjt(config)#

RouterB:

Router>
Router>ena
Router>enable 
Router#conf
Router#configure ter
Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#host
Router(config)#hostname RouterB-sjt
RouterB-sjt(config)#inte
RouterB-sjt(config)#interface F
RouterB-sjt(config)#interface FastEthernet 0/0
RouterB-sjt(config-if)#ip ad
RouterB-sjt(config-if)#ip address 172.16.10.6 255.255.255.0
RouterB-sjt(config-if)#no shut
RouterB-sjt(config-if)#no shutdown 
RouterB-sjt(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
RouterB-sjt(config-if)#exit
RouterB-sjt(config)#inte
RouterB-sjt(config)#interface se
RouterB-sjt(config)#interface serial 2/0
RouterB-sjt(config-if)#ip ad
RouterB-sjt(config-if)#ip address 172.16.20.2 255.255.255.0
RouterB-sjt(config-if)#clo
RouterB-sjt(config-if)#clock ra
RouterB-sjt(config-if)#clock rate 56000
RouterB-sjt(config-if)#no shut
RouterB-sjt(config-if)#no shutdown 
RouterB-sjt(config-if)#
%LINK-5-CHANGED: Interface Serial2/0, changed state to up
RouterB-sjt(config-if)#exit
RouterB-sjt(config)#inte
RouterB-sjt(config)#interface se
RouterB-sjt(config)#interface serial 3/0
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up
RouterB-sjt(config-if)#ip ad
RouterB-sjt(config-if)#ip address 172.16.40.1 255.255.255.0
RouterB-sjt(config-if)#clo
RouterB-sjt(config-if)#clock ra
RouterB-sjt(config-if)#clock rate 56000
RouterB-sjt(config-if)#no shut
RouterB-sjt(config-if)#no shutdown 
%LINK-5-CHANGED: Interface Serial3/0, changed state to down
RouterB-sjt(config-if)#exit
RouterB-sjt(config)#

RouterC:

Router>ena
Router>enable 
Router#conf
Router#configure ter
Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#host
Router(config)#hostname RouterC-sjt
RouterC-sjt(config)#inte
RouterC-sjt(config)#interface F
RouterC-sjt(config)#interface FastEthernet 0/0
RouterC-sjt(config-if)#ip ad
RouterC-sjt(config-if)#ip address 172.16.50.1 255.255.255.0
RouterC-sjt(config-if)#no shut
RouterC-sjt(config-if)#no shutdown 
RouterC-sjt(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
RouterC-sjt(config-if)#exit
RouterC-sjt(config)#inte
RouterC-sjt(config)#interface se
RouterC-sjt(config)#interface serial 3/0
RouterC-sjt(config-if)#ip ad
RouterC-sjt(config-if)#ip address 172.16.40.2 255.255.255.0
RouterC-sjt(config-if)#no shut
RouterC-sjt(config-if)#no shutdown 
RouterC-sjt(config-if)#
%LINK-5-CHANGED: Interface Serial3/0, changed state to up
RouterC-sjt(config-if)#exit
RouterC-sjt(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/0, changed state to up

2. 配置静态路由

配置RouterA静态路由:

RouterA-sjt#
RouterA-sjt#conf
RouterA-sjt#configure te
RouterA-sjt#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
RouterA-sjt(config)#ip rou
RouterA-sjt(config)#ip route 172.16.10.0 255.255.255.0 172.16.20.2
RouterA-sjt(config)#ip route 172.16.40.0 255.255.255.0 172.16.20.2
RouterA-sjt(config)#ip route 172.16.50.0 255.255.255.0 172.16.20.2

配置RouterB静态路由

RouterB-sjt>
RouterB-sjt>ena
RouterB-sjt>enable 
RouterB-sjt#conf
RouterB-sjt#configure ter
RouterB-sjt#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
RouterB-sjt(config)#ip rout
RouterB-sjt(config)#ip route 172.16.11.0 255.255.255.0 172.16.20.1
RouterB-sjt(config)#ip route 172.16.50.0 255.255.255.0 172.16.40.2
RouterB-sjt(config)#

配置RouterC静态路由

RouterC-sjt>
RouterC-sjt>ena
RouterC-sjt>enable 
RouterC-sjt#
RouterC-sjt#conf
RouterC-sjt#configure te
RouterC-sjt#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
RouterC-sjt(config)#ip r
RouterC-sjt(config)#ip route 172.16.10.0 255.255.255.0 172.16.40.1
RouterC-sjt(config)#ip route 172.16.11.0 255.255.255.0 172.16.40.1
RouterC-sjt(config)#ip route 172.16.20.0 255.255.255.0 172.16.40.1

五、验证实验结果

  1. show ip route

该命令显示路由器的IP路由选择表,详细指出了路由器是如何获悉网络和发现路由的,该命令如下:
RouterA:

RouterA-sjt#show 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
     172.16.0.0/24 is subnetted, 5 subnets
S       172.16.10.0 [1/0] via 172.16.20.2
C       172.16.11.0 is directly connected, FastEthernet0/0
C       172.16.20.0 is directly connected, Serial2/0
S       172.16.40.0 [1/0] via 172.16.20.2
S       172.16.50.0 [1/0] via 172.16.20.2

RouterB:

RouterB-sjt#show 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
     172.16.0.0/24 is subnetted, 5 subnets
C       172.16.10.0 is directly connected, FastEthernet0/0
S       172.16.11.0 [1/0] via 172.16.20.1
C       172.16.20.0 is directly connected, Serial2/0
C       172.16.40.0 is directly connected, Serial3/0
S       172.16.50.0 [1/0] via 172.16.40.2

RouterC:

RouterC-sjt#show 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
     172.16.0.0/24 is subnetted, 5 subnets
S       172.16.10.0 [1/0] via 172.16.40.1
S       172.16.11.0 [1/0] via 172.16.40.1
S       172.16.20.0 [1/0] via 172.16.40.1
C       172.16.40.0 is directly connected, Serial3/0
C       172.16.50.0 is directly connected, FastEthernet0/0
  1. ping 指令的使用

路由器RouterA去ping路由器RouterC

ping 172.16.50.1

PCA去ping PCB

ping 172.16.10.7

PCA去ping ServerC

ping 172.16.50.2

六、实验总结

  1. 学会了配置接口IP地址和静态路由
  2. 在配置静态ip时PC机必须要配置网关
  3. 学会了使用show ip route和ping命令去验证静态路由配置结果
  4. 通过串行线连接的2个路由器在2个接口都配置好ip后才会变成绿色,成功互相访问
  5. 对PT有了进一步的了解和熟悉

七、附件

下面给出该实验的文件:

链接:https://pan.baidu.com/s/1ZdLA4swUn3tOJ4aMrVEXGQ 密码:rpy0

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