192.168.1.1-路由器设置 | 192.168.0.1-无线路由器设置

【思科】IS-IS基本配置、重发布实验

发布时间:2014-09-11 10:21

简介:IS-IS协议同标准协议OSPF一样,是一种链路状态动态路由协议,但是它比ospf做了很多优化,减少了路由类型、LSA的泛洪,在现网中的应用也十分的广泛。
 

实验拓扑:(略)
 

实验目的:1.在R1—R5上运行IS-IS协议,R1-R6上运行RIPv2协议。

2.进行路由重发布,实现R5、R6互通。

3.实现域间和外部路由汇总。


 

实验步骤:1.在R1到R6上做基本配置,以及环回口。(略)
 

2.运行IS-IS协议和RIP协议。

R1(config)#router isis

R1(config-router)#net 49.0001.0001.0001.0001.00 //指定NSAP地址,相当于router ID

R1(config-router)#ex

R1(config)#int range f0/0 ,l0

R1(config-if-range)#ip router isis //进接口后宣告该接口下的网段
 

R2(config)#router isis

R2(config-router)#net 49.0001.0002.0002.0002.00

R2(config-router)#ex

R2(config)#int range f0/0 -1 ,l0

R2(config-if-range)#ip router isis
 

R3(config)#router isis

R3(config-router)#net 49.0000.0003.0003.0003.00

R3(config-router)#ex

R3(config)#int range f0/0 -1 ,l0

R3(config-if-range)#ip router isis
 

R4(config)#router isis

R4(config-router)#net 49.0000.0004.0004.0004.00

R4(config-router)#ex

R4(config)#int range f0/0 -1 ,l0

R4(config-if-range)#ip router isis
 

R5(config)#router isis

R5(config-router)#net 49.0002.0005.0005.0005.00

R5(config-router)#ex

R5(config)#int range f0/1 ,l0

R5(config-if-range)#ip router isis
 

R1(config)#router rip

R1(config-router)#version 2

R1(config-router)#no auto-summary

R1(config-router)#network 16.0.0.0
 

R6#conf t http://www.luyouqiwang.com/cisco

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

R6(config)#router rip

R6(config-router)#version 2

R6(config-router)#no auto-summary

R6(config-router)#network 16.0.0.0

R6(config-router)#network 6.6.6.6
 

可以对IS-IS协议作一些优化,由于ISIS协议路由器默认使用的选择级别是level 1-2,会同时发送两种LSP,这是没有必要的,十分浪费路由资源。
 

将R1改为level 1

R1(config)#router isis

R1(config-router)#is-type level-1 //修改路由器的路由选择级别

 

将R3,R4改为level 2

R3(config)#router isis

R3(config-router)#is-type level-2
 

R4(config)#router isis

R4(config-router)#is-type level-2
 

将R5的f0/1接口改为level 2

R5#conf t
 

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

R5(config)#int f0/1

R5(config-if)#isis circuit-type level-2-only //修改接口的选择级别
 

3.路由重发布

R1(config)#router isis

R1(config-router)#redistribute rip ?

level-1 IS-IS level-1 routes only

level-1-2 IS-IS level-1 and level-2 routes

level-2 IS-IS level-2 routes only

metric Metric for redistributed routes

metric-type OSPF/IS-IS exterior metric type for redistributed routes

route-map Route map reference

<cr>
 

R1(config-router)#redistribute rip level-1

R1(config-router)#ex
 

R1(config)#router rip

R1(config-router)#redistribute isis ?

WORD ISO routing area tag

level-1 IS-IS level-1 routes only

level-1-2 IS-IS level-1 and level-2 routes

level-2 IS-IS level-2 routes only

metric Metric for redistributed routes

route-map Route map reference

<cr>
 

R1(config-router)#redistribute isis level-1 metric 2
 

查看一下R5的路由表
 

R5#show ip route

....

34.0.0.0/24 is subnetted, 1 subnets

i L2 34.0.0.0 [115/20] via 45.0.0.4, FastEthernet0/1

16.0.0.0/24 is subnetted, 1 subnets

i L2 16.0.0.0 [115/40] via 45.0.0.4, FastEthernet0/1

1.0.0.0/32 is subnetted, 1 subnets

i L2 1.1.1.1 [115/50] via 45.0.0.4, FastEthernet0/1

2.0.0.0/24 is subnetted, 1 subnets

i L2 2.2.2.0 [115/40] via 45.0.0.4, FastEthernet0/1

3.0.0.0/32 is subnetted, 1 subnets

i L2 3.3.3.3 [115/30] via 45.0.0.4, FastEthernet0/1

4.0.0.0/32 is subnetted, 1 subnets

i L2 4.4.4.4 [115/20] via 45.0.0.4, FastEthernet0/1

5.0.0.0/32 is subnetted, 1 subnets

C 5.5.5.5 is directly connected, Loopback0

6.0.0.0/32 is subnetted, 1 subnets

i L2 6.6.6.6 [115/40] via 45.0.0.4, FastEthernet0/1

23.0.0.0/24 is subnetted, 1 subnets

i L2 23.0.0.0 [115/30] via 45.0.0.4, FastEthernet0/1

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, FastEthernet0/1
 

测试一下R5能否连通R6

R5#p 6.6.6.6
 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 6.6.6.6, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 88/122/140 ms
 

可见,R5已经学习到R6的路由了。


 

4.域间路由汇总和外部路由汇总

假设在R5上有4条路由,192.168.0.1-192.168.3.1

可以在R5上进行汇总

R5(config)#router isis

R5(config-router)#summary-address 192.168.0.0 255.255.252.0
 

这时候,在R4上面查看路由表会发现一条汇总路由
 

R4#show ip r

*Mar 1 01:09:31.227: %SYS-5-CONFIG_I: Configured from console by console

R4#show ip route

....

34.0.0.0/24 is subnetted, 1 subnets

C 34.0.0.0 is directly connected, FastEthernet0/1

16.0.0.0/24 is subnetted, 1 subnets

i L2 16.0.0.0 [115/30] via 34.0.0.3, FastEthernet0/1

1.0.0.0/32 is subnetted, 1 subnets

i L2 1.1.1.1 [115/40] via 34.0.0.3, FastEthernet0/1

2.0.0.0/24 is subnetted, 1 subnets

i L2 2.2.2.0 [115/30] via 34.0.0.3, FastEthernet0/1

3.0.0.0/32 is subnetted, 1 subnets

i L2 3.3.3.3 [115/20] via 34.0.0.3, FastEthernet0/1

4.0.0.0/32 is subnetted, 1 subnets

C 4.4.4.4 is directly connected, Loopback0

5.0.0.0/32 is subnetted, 1 subnets

i L2 5.5.5.5 [115/20] via 45.0.0.5, FastEthernet0/0

6.0.0.0/32 is subnetted, 1 subnets

i L2 6.6.6.6 [115/30] via 34.0.0.3, FastEthernet0/1

23.0.0.0/24 is subnetted, 1 subnets

i L2 23.0.0.0 [115/20] via 34.0.0.3, FastEthernet0/1

12.0.0.0/24 is subnetted, 1 subnets

i L2 12.0.0.0 [115/30] via 34.0.0.3, FastEthernet0/1

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, FastEthernet0/0

i L2 192.168.0.0/22 [115/20] via 45.0.0.5, FastEthernet0/0


这样可以节省路由器的资源。

同样的,假设在R6上有4条路由172.16.0.1-172.16.3.1

可以在R1上进行路由汇总

 

R1(config)#router isis

R1(config-router)#summary-address 172.16.0.0 255.255.252.0 level-1


注意:在对外部路由进行汇总的时候,最后要加上level-x ,否则无效


在R2上查看一下路由汇总是否生效。


R2#show ip route

.....
 

34.0.0.0/24 is subnetted, 1 subnets

i L2 34.0.0.0 [115/20] via 23.0.0.3, FastEthernet0/0

16.0.0.0/24 is subnetted, 1 subnets

i L1 16.0.0.0 [115/10] via 12.0.0.1, FastEthernet0/1

1.0.0.0/32 is subnetted, 1 subnets

i L1 1.1.1.1 [115/20] via 12.0.0.1, FastEthernet0/1

2.0.0.0/24 is subnetted, 1 subnets

C 2.2.2.0 is directly connected, Loopback0

3.0.0.0/32 is subnetted, 1 subnets

i L2 3.3.3.3 [115/20] via 23.0.0.3, FastEthernet0/0

4.0.0.0/32 is subnetted, 1 subnets

i L2 4.4.4.4 [115/30] via 23.0.0.3, FastEthernet0/0

5.0.0.0/32 is subnetted, 1 subnets

i L2 5.5.5.5 [115/40] via 23.0.0.3, FastEthernet0/0

6.0.0.0/32 is subnetted, 1 subnets

i L1 6.6.6.6 [115/10] via 12.0.0.1, FastEthernet0/1

23.0.0.0/24 is subnetted, 1 subnets

C 23.0.0.0 is directly connected, FastEthernet0/0

172.16.0.0/22 is subnetted, 1 subnets

i L1 172.16.0.0 [115/10] via 12.0.0.1, FastEthernet0/1

12.0.0.0/24 is subnetted, 1 subnets

C 12.0.0.0 is directly connected, FastEthernet0/1

45.0.0.0/24 is subnetted, 1 subnets

i L2 45.0.0.0 [115/30] via 23.0.0.3, FastEthernet0/0

i L2 192.168.0.0/22 [115/40] via 23.0.0.3, FastEthernet0/0


汇总完毕,实验结束。

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