Cisco路由器静态路由和默认路由的配置

实验四 Cisco路由器静态路由和默认路由的配置（验证性）（2学时）

一、实验目的

1.进一步熟悉Cisco路由器的配置环境

2.掌握Cisco路由器静态路由的配置方法

3.掌握Cisco路由器默认路由的配置方法

二、实验内容

（一）静态路由的配置

建立如上所示的拓扑结构，现在需要完成的就是让HostA能和HostB互相ping通。

具体配置如下：

router1的配置：

Press Enter to Start

Router>

Router>en

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname router1

router1(config)#interface e0

router1(config-if)#ip address 192.168.1.2 255.255.255.0

router1(config-if)#no shut

%LINK-3-UPDOWN: Interface Ethernet0, changed state to up

router1(config-if)#interface s0

router1(config-if)#ip address 192.168.2.1 255.255.255.0

router1(config-if)#clock rate 6400 //clock rate是dce设备给dte设备提供时钟频率的，需要在dce里面设置，而另外的一个路由器里面则不用设置

router1(config-if)#no shut

%LINK-3-UPDOWN: Interface Serial0, changed state to up

router1(config-if)#end

%LINK-3-UPDOWN: Interface Serial0, changed state to down

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down

router1#config t

Enter configuration commands, one per line. End with CNTL/Z.

router1(config)#ip route 192.168.3.0 255.255.255.0 192.168.2.1 //设定静态路由

router1(config)#ip route 192.168.2.0 255.255.255.0 192.168.2.1

router1(config)#end

router1#copy running startup

Destination filename [startup-config]?

Building configuration...

[OK]

%LINK-3-UPDOWN: Interface Serial0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up

router2的配置：

Press Enter to Start

Router>en

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#interface e0

Router(config-if)#end

Router#config t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname router2

router2(config)#interface s0

router2(config-if)#ip address 192.168.2.2 255.255.255.0

router2(config-if)#no shut

%LINK-3-UPDOWN: Interface Serial0, changed state to up

router2(config-if)#interface s0

router2(config-if)#interface e0

router2(config-if)#ip address 192.168.3.1 255.255.255.0

router2(config-if)#no shut

%LINK-3-UPDOWN: Interface Ethernet0, changed state to up

router2(config-if)#end

router2#config t

Enter configuration commands, one per line. End with CNTL/Z.

router2(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.2

router2(config)#ip route 192.168.2.0 255.255.255.0 192.168.2.2

router2(config)#end

router2#copy running startup

Destination filename [startup-config]?

Building configuration...

[OK]

router2#ping 192.168.1.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

router2#ping 192.168.2.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

router2#ping 192.168.2.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms //路由器之间试ping 一下，应该可以ping通，接下来配pc

pc1的配置如下：

Boson BOSS 5.0

Copyright 1998-2003 Boson Software, Inc.

Use the command help to get started

Press Enter to begin

C:>ipconfig /ip 192.168.1.1 255.255.255.0 //此时尚未指定网关

C:>ping 192.168.2.1

Pinging 192.168.2.1 with 32 bytes of data:

Request timed out.

Request timed out.

Request timed out.

Request timed out.

Request timed out.

Ping statistics for 192.168.2.1:

Packets: Sent = 5, Received = 0, Lost = 5 (100% loss), //未指定网关时不能ping通router1的s0

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:>ipconfig /dg 192.168.1.2 //指定网关为与本机直连的router1的e0口