网络工程师交换试验手册之二：静态路由实验

实验目的：

 理解路由的在数据传输过程中的作用。

 通过该实验学会配置静态路由，并通过ping命令体会静态路由的效果。

 掌握ping命令的使用。

实验拓扑：

（2台路由与3台路由环境）

实验内容：

2台路由器静态路由协议的基本配置

首先将所有的路由器起名称，并且将所有的链路层调试通

Router>

Router> en

Router#conf t

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

Router(config)#host r1  起名称

r1(config)#int e0   进e0端口

r1(config-if)#ip add 199.99.1.1 255.255.255.0 配置IP地址

r1(config-if)#no shut

r1(config-if)#int s0

r1(config-if)#ip add 199.99.2.1 255.255.255.0

00:43:00: %LINK-3-UPDOWN: Interface Ethernet0, changed state to up

00:43:01: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0, changed state to up  系统状态提示接口双UP

r1(config-if)#^Z

r1#sh contr

r1#sh controllers s 0 查看R1的s0口是否为DCE

HD unit 0, idb = 0x16DFD8, driver structure at 0x175B00

buffer size 1524  HD unit 0, V.35 DTE cable

cpb = 0xE1, eda = 0x5140, cda = 0x5000

RX ring with 16 entries at 0xE15000

00 bd_ptr=0x5000 pak=0x177400 ds=0xE18908 status=80 pak_size=0

01 bd_ptr=0x5014 pak=0x1776D4 ds=0xE18FC4 status=80 pak_size=0

02 bd_ptr=0x5028 pak=0x1779A8 ds=0xE19680 status=80 pak_size=0

03 bd_ptr=0x503C pak=0x177C7C ds=0xE19D3C status=80 pak_size=0

04 bd_ptr=0x5050 pak=0x177F50 ds=0xE1A3F8 status=80 pak_size=0

05 bd_ptr=0x5064 pak=0x178224 ds=0xE1AAB4 status=80 pak_size=0

06 bd_ptr=0x5078 pak=0x1784F8 ds=0xE1B170 status=80 pak_size=0

07 bd_ptr=0x508C pak=0x1787CC ds=0xE1B82C status=80 pak_size=0

08 bd_ptr=0x50A0 pak=0x178AA0 ds=0xE1BEE8 status=80 pak_size=0

09 bd_ptr=0x50B4 pak=0x178D74 ds=0xE1C5A4 status=80 pak_size=0

10 bd_ptr=0x50C8 pak=0x179048 ds=0xE1CC60 status=80 pak_size=0

11 bd_ptr=0x50DC pak=0x17931C ds=0xE1D31C status=80 pak_size=0

12 bd_ptr=0x50F0 pak=0x1795F0 ds=0xE1D9D8 status=80 pak_size=0

13 bd_ptr=0x5104 pak=0x1798C4 ds=0xE1E094 status=80 pak_size=0

14 bd_ptr=0x5118 pak=0x179B98 ds=0xE1E750 status=80 pak_size=0

15 bd_ptr=0x512C pak=0x179E6C ds=0xE1EE0C status=80 pak_size=0

16 bd_ptr=0x5140 pak=0x17A140 ds=0xE1F4C8 status=80 pak_size=0

cpb = 0xE1, eda = 0x5800, cda = 0x5814

TX ring with 1 entries at 0xE15800

bd_ptr=0x5800 pak=0x000000 ds=0xE0124C status=80 pak_size=22

01 bd_ptr=0x5814 pak=0x11EDA8 ds=0xE015DC status=80 pak_size=22

0 missed datagrams, 0 overruns

0 bad datagram encapsulations, 0 memory errors

0 transmitter underruns

0 residual bit errors

r1#conf t

r1(config)#int s0

到目前为止R1的链路操作完毕

Router>en

Router#contf t

Router(config)#host r2

r2(config)#

r2(config)#int s0

r2(config-if)#ip add 199.99.2.2 255.255.255.0

r2(config-if)#clock rate 64000 进行时钟速率的配置

r2(config-if)#no shut

r2(config-if)#ine 0

r2(config-if)#ip add 199.99.3.1 255.255.255.0

r2(config-if)#^Z

r2# ping 199.99.2.1  测试直连链路接口是否可以通信

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 199.99.2.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms

r2#

R2的链路配置完毕

r1#sh ip route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

C    199.99.2.0/24 is directly connected, Serial0

C    199.99.1.0/24 is directly connected, Ethernet0

r1#

00:44:33: %SYS-5-CONFIG_I: Configured from console by console

r1#sh ip int bri

Interface                  IP-Address      OK? Method Status                Protocol

Ethernet0                  199.99.1.1      YES manual up                    up      

Serial0                    199.99.2.1      YES manual up                    up      

Serial1                    unassigned      YES unset  administratively down down   

r1(config)#ip route 199.99.3.0 255.255.255.0 199.99.2.2 定义路由

r1(config)#^Z

r1#ping 199.99.3.1

Sending 5, 100-byte ICMP Echos to 199.99.3.1, timeout is 2 seconds:

!!!!! 可以通信

Success rate is 100 percent (5/5), round-trip min/avg/max = 32/34/44 ms

我们还需要里同扩展Ping去测试是否真的R1的E0口的数据包可以到达R2口E0。

r1#ping

Protocol [ip]:

Target IP address: 199.99.3.1 定义目的

Repeat count [5]:

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface: 199.99.1.1 定义源

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]:

Packet sent with a source address of 199.99.1.1

.....

r2#conf t

r2(config)#ip route 0.0.0.0 0.0.0.0 199.99.2.1 定义到所有地方去的路由的 包下一跳都是199.99.2.1

r2(config)#?

r1#ping  再次进行扩展ping的测试

Target IP address: 199.99.3.1

Source address or interface: 199.99.1.1

那么两台路由器的路由实验完全成功了。

r1#sh run

Building configuration...

Current configuration : 429 bytes

!

version 12.2

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname r1

ip subnet-zero

interface Ethernet0

ip address 199.99.1.1 255.255.255.0

interface Serial0

ip address 199.99.2.1 255.255.255.0

interface Serial1

no ip address

shutdown

ip http server

ip classless

ip route 199.99.3.0 255.255.255.0 199.99.2.2

line con 0

line aux 0

line vty 0 4

end

r2#sh run

Configured from console by console

Current configuration : 437 bytes

hostname r2

ip address 199.99.3.1 255.255.255.0

ip address 199.99.2.2 255.255.255.0

clockrate 64000

ip route 0.0.0.0 0.0.0.0 199.99.2.1

S    199.99.3.0/24 [1/0] via 199.99.2.2

r2#sh ip route

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

Gateway of last resort is 199.99.2.1 to network 0.0.0.0

C    199.99.3.0/24 is directly connected, Ethernet0

S*   0.0.0.0/0 [1/0] via 199.99.2.1

3台路由器静态路由协议的基本配置

Current configuration : 474 bytes

ip route 199.99.3.0 255.255.255.0 199.99.2.2  到R2去的路由

ip route 199.99.4.0 255.255.255.0 199.99.2.2  到R3去的路由

Current configuration : 499 bytes

ip route 0.0.0.0 0.0.0.0 199.99.2.1  到R1的返回路由

ip route 199.99.4.0 255.255.255.0 199.99.3.2 到R3的路由

r3#sh run

Current configuration : 420 bytes

hostname r3

ip address 199.99.4.1 255.255.255.0

ip address 199.99.3.2 255.255.255.0

ip route 0.0.0.0 0.0.0.0 199.99.3.1 只有一条返回路由就可以了。

r3#

S    199.99.4.0/24 [1/0] via 199.99.2.2

C    199.99.3.0/24 is directly connected, Serial1

S    199.99.4.0/24 [1/0] via 199.99.3.2

r3#sh ip route

Gateway of last resort is 199.99.3.1 to network 0.0.0.0

C    199.99.4.0/24 is directly connected, Ethernet0

S*   0.0.0.0/0 [1/0] via 199.99.3.1

实验总结：

静态路由使我们开始学习路由方面的第一步它也是我们经常用到的一种配置路由的方法，是我们以后学习其他动态路由协议的基础，只有完全理解了静态路由的工作原理，并掌握了其配置方法才能更好的学习后面的各种动态路由协议。