實驗目的

通過本實驗，可以掌握以下技能：

• 配置介面IP地址。
• 配置靜態路由。
• 驗證靜態路由的配置。

 裝置需求

• Cisco路由器3臺，分別命名為RouterA、RouterB和RouterC。其中RouterA具有1個乙太網介面和1個序列介面；RouterB具有1個乙太網介面和2個序列介面；RouterC具有1個乙太網介面和1個序列介面。
• 3根交叉線序雙絞線，2根序列線。
• 1臺access server，及用於反向Telnet的相應電纜。
• 1臺帶有超級終端程式的PC機，以及Console電纜及轉接器。
•  拓撲結構及配置說明

實驗的拓撲結構如圖10-2所示。通過2根序列線分別把RouterA和RouterB連線起來，RouterB和RouterC連線起來。

各路由器使用的介面及其編號見圖10-2所示的標註，各介面IP地址分配如下：

• RouterA： E0:172.16.11.1  S0:172.16.20.1
• RouterB：E0:172.16.10.6  S0:172.16.20.2  S1:172.16.40.1 
• RouterC： E0:172.16.50.1  S0:172.16.40.2

實驗配置

基本網路配置

這個實驗的這一步和之前的實驗二一樣，這裡不再複述，最後的網路拓撲如下

配置靜態路由

RouterA：

RouterA>enable
Password: 
RouterA#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
RouterA(config)#ip route 172.16.10.0 255.255.255.0 172.16.20.0
RouterA(config)#ip route 172.16.40.0 255.255.255.0 172.16.20.0
RouterA(config)#ip route 172.16.50.0 255.255.255.0 172.16.20.0
RouterA(config)#

RouterB：

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

RouterC：

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

驗證靜態路由配置

RouterA:

RouterB：

RouterC:

網路拓撲

檢視主機PC2的ip地址

用主機PC2依次去ping RouterA \RouterB \RouterC\PC3

PC>ping 172.16.11.1

Pinging 172.16.11.1 with 32 bytes of data:

Reply from 172.16.11.1: bytes=32 time=9ms TTL=255
Reply from 172.16.11.1: bytes=32 time=0ms TTL=255
Reply from 172.16.11.1: bytes=32 time=0ms TTL=255
Reply from 172.16.11.1: bytes=32 time=0ms TTL=255

Ping statistics for 172.16.11.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 9ms, Average = 2ms

PC>ping 172.16.20.2

Pinging 172.16.20.2 with 32 bytes of data:

Reply from 172.16.20.2: bytes=32 time=1ms TTL=254
Reply from 172.16.20.2: bytes=32 time=2ms TTL=254
Reply from 172.16.20.2: bytes=32 time=5ms TTL=254
Reply from 172.16.20.2: bytes=32 time=1ms TTL=254

Ping statistics for 172.16.20.2:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 5ms, Average = 2ms

PC>ping 172.16.40.1

Pinging 172.16.40.1 with 32 bytes of data:

Reply from 172.16.40.1: bytes=32 time=7ms TTL=254
Reply from 172.16.40.1: bytes=32 time=8ms TTL=254
Reply from 172.16.40.1: bytes=32 time=9ms TTL=254
Reply from 172.16.40.1: bytes=32 time=5ms TTL=254

Ping statistics for 172.16.40.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 5ms, Maximum = 9ms, Average = 7ms

PC>ping 172.16.40.2

Pinging 172.16.40.2 with 32 bytes of data:

Reply from 172.16.40.2: bytes=32 time=12ms TTL=253
Reply from 172.16.40.2: bytes=32 time=15ms TTL=253
Reply from 172.16.40.2: bytes=32 time=6ms TTL=253
Reply from 172.16.40.2: bytes=32 time=7ms TTL=253

Ping statistics for 172.16.40.2:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 6ms, Maximum = 15ms, Average = 10ms

PC>ping 172.16.50.1

Pinging 172.16.50.1 with 32 bytes of data:

Reply from 172.16.50.1: bytes=32 time=4ms TTL=253
Reply from 172.16.50.1: bytes=32 time=9ms TTL=253
Reply from 172.16.50.1: bytes=32 time=6ms TTL=253
Reply from 172.16.50.1: bytes=32 time=2ms TTL=253

Ping statistics for 172.16.50.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 9ms, Average = 5ms

PC>ping 172.16.50.2

Pinging 172.16.50.2 with 32 bytes of data:

Request timed out.
Reply from 172.16.50.2: bytes=32 time=7ms TTL=125
Reply from 172.16.50.2: bytes=32 time=2ms TTL=125
Reply from 172.16.50.2: bytes=32 time=6ms TTL=125

Ping statistics for 172.16.50.2:
    Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 7ms, Average = 5ms

PC>ping 172.16.50.2

Pinging 172.16.50.2 with 32 bytes of data:

Reply from 172.16.50.2: bytes=32 time=8ms TTL=125
Reply from 172.16.50.2: bytes=32 time=6ms TTL=125
Reply from 172.16.50.2: bytes=32 time=9ms TTL=125
Reply from 172.16.50.2: bytes=32 time=3ms TTL=125

Ping statistics for 172.16.50.2:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 3ms, Maximum = 9ms, Average = 6ms

PC>
PC>

由以上的測試，我們可以發現實驗三在實驗二的基礎之上新增靜態路由之後，可以實現從主機PC2到主機PC3的聯通！

至此，我們的本次實驗到此結束！