cisco路由器基本實驗之三 動态路由之RIP協定的配置（Boson NetSim）

   實驗開始前，先說點與實驗無關的事情，在前兩篇路由配置的文章中，有很多的網友參與進來進行讨論，有非51cto的網友，也有51cto的朋友，在這裡要感謝一下gairuhe朋友，他多次提出意見，建議我使用可以使用真正的IOS來進行實驗模拟的Dynamips軟體，并且建議我在文章中把路由表也貼出來，這樣會看得更加直覺和友善，這些建議都很好，在此謝謝衆多網友的支援！

             言歸正傳，Boson Netsim的實驗規劃，預設路由下一個實驗應該是RIP協定的配置。衆所周知，RIP（Routing Information Protocol），即路由資訊協定，它與IGRP，OSPF等一樣都是屬于IGP（Interior Gateway Protocol）——内部網關協定，它是一種曆史很悠久的協定了，但是迄今為止，RIP還在小型網絡中很流行，因為它是基于跳數來對路徑進行度量的（僅僅隻靠跳數來進行度量也成為了RIP為人所诟病的地方），這樣使得RIP相比之下顯得最簡單，并且大多數的路由器也都支援RIP。據說，RIP還可以保證不同廠商的路由器互聯時能有良好的相容性。下面再說說RIP的大概工作機理。

　　RIP把每經過一個路由器稱為經過了一跳，而每經過一跳，RIP就會将他的路徑成本（metric）加1，這樣的話，跳數越多的則路徑越長，而RIP會優先選擇一條到達目标網絡跳數少的路徑，他支援的最大跳數是15跳，超過則被認為是不可達。接下來看看我的實驗。

順便說一下，在最近幾次的實驗中，我都将以這幅圖作為實驗的拓撲圖。和前兩次一樣，關鍵語句我都有注解，一來這樣友善想學習的朋友，二來也可以作為我自己以後備查，呵呵，下面看看我的配置：

r1的配置：

Press Enter to Start

Router>

Router>en

Router#config 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

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

router1(config-if)#exit

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

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

router1(config)#router rip                          //啟用rip協定

router1(config-router)#network 192.168.1.0          //需要給出與本路由器直連的網絡 

router1(config-router)#network 192.168.2.0          //此處分别為192.168.1.0和192.168.2.0

router1(config-router)#exit

router1(config)#exit

router1#copy running startup-config 

Destination filename [startup-config]?

Building configuration...

[OK]

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

r2的配置：

Router#con terminal 

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

router2(config-if)#interface e0

router2(config-if)#ip address 192.168.3.1 255.255.255.0

router2(config-if)#exit

router2(config)#router rip

router2(config-router)#network 192.168.3.0

router2(config-router)#network 192.168.2.0

router2(config-router)#exit

router2(config)#exit

router2#copy running-config startup-config 

router2#ping 192.168.2.1                 //試ping一下，完全正确

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

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

pc1的配置：

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

C:>ipconfig /dg 192.168.1.2

C:>ping 192.168.3.2

Pinging 192.168.3.2 with 32 bytes of data:     //正式開始測試，完全正确

Reply from 192.168.3.2: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.3.2:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

     Minimum = 50ms, Maximum =  60ms, Average =  55ms

C:>ping 192.168.3.1

Pinging 192.168.3.1 with 32 bytes of data:

Reply from 192.168.3.1: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.3.1:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

C:>ping 192.168.2.2

Pinging 192.168.2.2 with 32 bytes of data:

Reply from 192.168.2.2: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.2.2:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

C:>ping 192.168.2.1

Pinging 192.168.2.1 with 32 bytes of data:

Reply from 192.168.2.1: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.2.1:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

C:>ping 192.168.1.2

Pinging 192.168.1.2 with 32 bytes of data:

Reply from 192.168.1.2: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.1.2:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

pc2 的配置：

C:>ipconfig /ip 192.168.3.2 255.255.255.0

C:>ipconfig /dg 192.168.3.1

C:>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:        //正式測試，完全正确

Reply from 192.168.1.1: bytes=32 time=60ms TTL=241

Ping statistics for 192.168.1.1:     Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

Pinging 192.168.3.2 with 32 bytes of data:

C:>

下面是show run檢視的r1的部配置設定置情況：

interface Serial0

 ip address 192.168.2.1 255.255.255.0

 no ip directed-broadcast

!

interface Ethernet0

 ip address 192.168.1.2 255.255.255.0

router rip

 network 192.168.1.0

 network 192.168.2.0

ip classless

no ip http server

line con 0

 transport input none

line aux 0

line vty 0 4

no scheduler allocate

end

show run檢視的r2的部配置設定置情況：

 ip address 192.168.2.2 255.255.255.0

 ip address 192.168.3.1 255.255.255.0

 network 192.168.3.0

     不知道這樣能不能看得直覺些，希望大家繼續提出意見，我會一一改進的~~~

本文轉自 victoryan 51CTO部落格，原文連結:http://blog.51cto.com/victoryan/38714