cisco路由器基本實驗之二 預設路由的配置（Boson NetSim）

       昨天做的是靜态路由的配置，按照Boson NetSim上面寫的實驗計劃，後面還有一系列的實驗，如下圖所示：昨天做的就是Laber4 靜态路由的配置，今天則是Laber5，預設路由的配置，還是和昨天一樣，我把關鍵語句的意思即了解寫在了這些語句的後面，下面是我的配置情況：

   拓撲圖還是昨天那幅圖：

具體配置如下：

r1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

%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)#ip route 0.0.0.0 0.0.0.0 192.168.2.1

router1(config)#ip classless

                    ^

% Invalid input detected at '^' marker.            //可能是路由器型号太低或者是模拟軟體的bug，ip classless無效

router1(config)#exit

router1#copy running startup

Destination filename [startup-config]?

Building configuration...

[OK]

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

r2 的配置：

Router(config)#interface s0

Router(config-if)#ip address 192.168.2.2 255.255.255.0

Router(config-if)#no shut

Router(config-if)#interface e0

Router(config-if)#ip address 192.168.3.1 255.255.255.0

Router(config-if)#exit

Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.2.2

Router(config)#exit

Router#copy running startup

Router(config)#hostname router2                   //不好意思，剛開始忘了設主機名了

router2(config)#exit

router2#ping 192.168.1.2                          //先試ping下路由，顯示成功

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

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                             //開始測試，顯示完全成功

Pinging 192.168.3.2 with 32 bytes of data:

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),

C:>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:

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),

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                          //正式開始檢測，顯示實驗完全成功

C:>

  預設路由的配置就到此成功了，總結一下，關鍵語句是：

ip route 0.0.0.0 0.0.0.0 下一跳IP位址，希望大家都能實驗成功！

本文轉自 victoryan 51CTO部落格，原文連結:http://blog.51cto.com/victoryan/38599