CCNA培训课总结笔记--静态路由实现负载均衡（四）

实验目的:

利用静态路由实现的负载均衡,理解负载均衡中数据传输的过程.

实验拓扑图:

路由器上的配置：

R1 上的配置:

Router>en

Router#conf t

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

粘贴上路由器的基本命令

Router(config)#enable password cisco

Router(config)#no ip domain-lookup

Router(config)#line con 0

Router(config-line)# exec-timeout 0 0

Router(config-line)# logging synchronous

Router(config-line)#

Router(config-line)#line aux 0

Router(config-line)#line vty 0 4

Router(config-line)# password cisco

Router(config-line)# login

Router(config-line)#alias exec a sh ip int bri

Router(config)#alias exec b sh ip route

Router(config)#alias exec c sh ip route rip

Router(config)#alias exec d sh run

Router(config)#hostname R1

设置环回测试接口,环回测试的主要意义在于这种接口由于是逻辑存在,所以这种接口永远也不会被shutdown.一般用来作测试和定义路由ID中使用.

R1(config)#interface loopback 0,

R1(config-if)#ip address 1.1.1.1 255.255.255.0

R1(config-if)#no shutdown

R1(config-if)#interface e0/0

R1(config-if)#ip address 172.16.1.1 255.255.255.0

R1(config-if)#exit

R1(config)#interface s1/0

R1(config-if)#ip address 172.16.2.1 255.255.255.0

R1(config-if)#clock rate 64000

R2的配置:

Router(config)#hostname R2

R2(config)#interface s1/0

R2(config-if)#ip address 172.16.2.2 255.255.255.0

R2(config-if)#no shutdown

R2(config-if)#exit

R2(config)#interface s1/1

R2(config-if)#ip address 172.16.3.1 255.255.255.0

R2(config-if)#clock rate 64000

R3的配置:

Router(config)#hostname R3

R3(config)#interface e0/0

R3(config-if)#ip address 172.16.1.2 255.255.255.0

R3(config-if)#no shutdown

R3(config-if)#interface s1/1

R3(config-if)#ip address 172.16.3.2 255.255.255.0

R3(config-if)#exit

R3(config)#interface loopback 0

R3(config-if)#ip address 4.4.4.4 255.255.255.0

好了,配置好了上面的这些之后就可以进行验证了.

首先在路由器上设置去往R3的包的路径:

R1上的,直接通过静态路由来实现

R1(config)#ip route 4.4.4.0 255.255.255.0 172.16.1.2

再利用默认路由设置R3到R1的回包路径

R2(config)#ip route 0.0.0.0 0.0.0.0 172.16.2.1

R3(config)#ip route 0.0.0.0 0.0.0.0 172.16.3.1

在这里验证负载均衡.

用扩展的ping命令

R1#ping

Protocol [ip]:

Target IP address: 4.4.4.4

Repeat count [5]:

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface: 1.1.1.1

Type of service [0]: .

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

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

Number of hops [ 9 ]:

Loose, Strict, Record, Timestamp, Verbose[RV]: r

% No room for that option

Loose, Strict, Record, Timestamp, Verbose[RV]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:

Packet sent with a source address of 1.1.1.1

Packet has IP options:  Total option bytes= 39, padded length=40

 Record route: <*>

   (0.0.0.0)

Reply to request 0 (112 ms).  Received packet has options

 Total option bytes= 40, padded length=40

 Record route:

   (172.16.1.1)

   (4.4.4.4)

   (172.16.3.2)

   (172.16.2.2)

   (1.1.1.1) <*>

 End of list

Reply to request 1 (184 ms).  Received packet has options

Reply to request 2 (136 ms).  Received packet has options

Reply to request 3 (136 ms).  Received packet has options

Reply to request 4 (136 ms).  Received packet has options

Success rate is 100 percent (5/5), round-trip min/avg/max = 112/140/184 ms

R1#

通过观察可以看到通过扩展ping命令发现ICMP包去回的路径是不同的这样就实现的了负载均衡.

本文转自 独钩寒江雪 51CTO博客，原文链接：http://blog.51cto.com/bennie/100612，如需转载请自行联系原作者