PACKET TRACTHER 4.1做WAN实验

PACKET TRACTHER 4.1 做WAN 实验

实验前的思考与准备：

首先画好 TOP 图

给 ROUTER 安模板的时候要把电源关掉

然后连线 注意哪头是 DCE ，哪头是 DTE ，因为 DCE 要配时钟

连线规则：同类设备用交叉线 COPPER CROSS-OVER ，不同类设备之间用直连线 COPPER STRAIGHT-STROUGH.

要搞清楚实验的目的 ：做不同网络之间的通信， ROUTER 连接的两个不同的网络。

然后要注意哪个接口连接的是哪里。

（绿色的点代表网络是通的，此图为配置好 ROUTER0 的 F0/0 后的截图）

PC0  IP:192.168.1.111          PC1  IP: 10.0.0 .111

ROUTER0(DCE)   F0/0:192.168.1.1   S0/0: 1.1.1 .1

ROUTER 1    F 0/0: 10.0.0 .1      S0/0:1.1.1.254

配置 PC0 的 IP 和子网掩码

配置 PC1 的 IP 和子网掩码

Router>en

Router#setup

 

 

         --- System Configuration Dialog ---

 

Continue with configuration dialog? [yes/no]:

% Please answer 'yes' or 'no'.

Continue with configuration dialog? [yes/no]: y

 

At any point you may enter a question mark '?' for help.

Use ctrl-c to abort configuration dialog at any prompt.

Default settings are in square brackets '[]'.

 

 

Basic management setup configures only enough connectivity

for management of the system, extended setup will ask you

to configure each interface on the system

 

Would you like to enter basic management setup? [yes/no]: y

Configuring global parameters:

 

  Enter host name [Router]: R1

 

  The enable secret is a password used to protect access to

  privileged EXEC and configuration modes. This password, after

  entered, becomes encrypted in the configuration.

  Enter enable secret: 123

 

  The enable password is used when you do not specify an

  enable secret password, with some older software versions, and

  some boot images.

  Enter enable password: 234

 

  The virtual terminal password is used to protect

  access to the router over a network interface.

  Enter virtual terminal password: 123

 

Current interface summary

 

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        unassigned      YES manual administratively down down

 

Serial0/0              unassigned      YES manual administratively down down

 

Serial0/1              unassigned      YES manual administratively down down

 

Serial0/2              unassigned      YES manual administratively down down

 

Enter interface name used to connect to the

management network from the above interface summary: fastethernet0/0

 

Configuring interface FastEthernet0/0:

  Configure IP on this interface? [yes]: n

 

The following configuration command script was created:

 

!

hostname R1

enable secret 5 $1$rBp.$.1kGR 1m3 xoMR0FufFawe..

enable password 234

line vty 0 4

password 123

!

interface FastEthernet0/0

no shutdown

no ip address

!

interface Serial0/0

shutdown

no ip address

!

interface Serial0/1

shutdown

no ip address

!

interface Serial0/2

shutdown

no ip address

!

end

 

[0] Go to the IOS command prompt without saving this config.

[1] Return back to the setup without saving this config.

[2] Save this configuration to nvram and exit.

 

Enter your selection [2]: o

% A decimal number between 0 and 2.

Enter your selection [2]: 0

% You can enter the setup, by typing setup at IOS command prompt

Router#conf t

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

Router(config)#int

Router(config)#interface fastethernet0/0

Router(config-if)#ip add 192.168.1.1 255.255.255.0

Router(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#exit

Router(config)#end

%SYS-5-CONFIG_I: Configured from console by console

Router#copy run start

Destination filename [startup-config]?

Building configuration...

[OK]

Router#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        192.168.1.1     YES manual up                    up

 

Serial0/0              unassigned      YES manual administratively down down

 

Serial0/1              unassigned      YES manual administratively down down

 

Serial0/2              unassigned      YES manual administratively down down

（打开 S0/0 端口并配置 IP ）

注意：其余端口的打开和配置也是基本相同的！！！！！！！！！！！！！

端口配置好之后就可以配置缺省路由了：

R1>en

R1#conf t

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

R1(config)#ip route 0.0.0 .0 0.0.0.0 1.1.1.254

R1(config)#no shut

               ^

% Invalid input detected at '^' marker.

      

R1(config)#end

%SYS-5-CONFIG_I: Configured from console by console

R1#copy run start

Destination filename [startup-config]?

Building configuration...

[OK] （这是在 ROUTER1 中配置缺省路由，最后一个 IP 是 1.1.1 .254 ，指向下一个 ROUTER 的 S0/0 端口）

当我们把端口配好之后，我们来看看各个端口的情况。

R1>

R1>en

R1#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        192.168.1.1     YES manual up                    up

 

Serial0/0              1.1.1 .1         YES manual up                    down

 

Serial0/1              unassigned      YES manual administratively down down

 

Serial0/2              unassigned      YES manual administratively down down

R1#

很奇怪，我们发现已经配置好了的 S0/0 端口是 DOWN ！然后再看看 ROUTER2
R2>

R2>en

R2#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        10.0.0 .1        YES manual up                    up

 

FastEthernet0/1        unassigned      YES manual administratively down down

 

Serial0/0              1.1.1 .254       YES manual up                    down

 

Serial0/1              unassigned      YES manual administratively down down

R2#

显然， ROUTER2 的 S0/0 端口也是 DOWN 。而且现在不管你怎么进入 S0/0 端口，你都无法让 DOWN 变成 UP. 为什么呢？

因为我们还没有配置时钟 !!!!!!!DCE 默认是要配置时钟的。

R1#conf t

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

R1(config)#int

R1(config)#interface S0/0

R1(config-if)#CLOCK RATE ?

Speed (bits per second

  1200          

  2400          

  4800          

  9600          

  19200         

  38400         

  56000         

  64000         

  72000         

  125000        

  128000        

  148000        

  250000        

  500000        

  800000        

  1000000       

  1300000        

  2000000       

  4000000       

  <300-4000000>  Choose clockrate from list above

 

R1(config-if)#CLOCK RATE 128000

R1(config-if)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up

R1(config-if)#no shut

R1(config-if)#end

%SYS-5-CONFIG_I: Configured from console by console

R1#conf t

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

R1(config)#config

R1(config)#config-register 0x2102

R1(config)#end

%SYS-5-CONFIG_I: Configured from console by console

R1#copy run start

Destination filename [startup-config]?

Building configuration...

[OK] （时钟的配置要进入 S0/0 端口，配置好了，看一下）

R1#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        192.168.1.1     YES manual up                    up

 

Serial0/0              1.1.1 .1         YES manual up                    up

 

Serial0/1              unassigned      YES manual administratively down down

 

Serial0/2              unassigned      YES manual administratively down down

R1# （可以看见刚才 DOWN 的端口打开了！！！！再打开 ROUTER2 看看）

R2#

R2#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

 

FastEthernet0/0        10.0.0 .1        YES manual up                    up

 

FastEthernet0/1        unassigned      YES manual administratively down down

 

Serial0/0              1.1.1 .254       YES manual up                    up

 

Serial0/1              unassigned      YES manual administratively down down

同样也是由 DOWN 变成了 UP.

现在我们来打开 PC0 做一下实验看看两个路由之间的网络是不是可以相互通信：

       PC0 的 IP 是 192.168.1.111 指向路由的网关 192.168.1 如图，可以 PING 通自己。

如图：可以 PING 通指向路由的网关和路由的 S0/0 端口。

如图：可以 PING 通 ROUTER1 的 S0/0 端口和 F0/0 端口，说明两个路由之间是可以通信的。

如图：成功 PING 通 PC1 指向 ROUTER1 网关，并且成功 PING 通 PC1 （ 10.0.0 .111 ）

   反之也是一样的，我就不再打开 PC1 再 PING PC0 了。至此实验完成！

注意事项总结如下：

一． 先画拓扑图便于实验配置，不至于将 IP 搞混。

二． 注意实验时设备间的线缆连接要选择正确。

三． 端口配置好了以后要配置 DCE 的时钟和缺省路由两个网络的计算机才可以完成通信。