写网关

r1

<Huawei>system-view 
[Huawei]sysname r1
[r1]interface GigabitEthernet 0/0/0
[r1-GigabitEthernet0/0/0]ip address 192.168.1.1 24
[r1]interface g 0/0/1
[r1-GigabitEthernet0/0/1]ip address 192.168.3.1 24
[r1]interface LoopBack 0
[r1-LoopBack0]ip address 172.16.1.1 24
[r1-LoopBack0]q
[r1]interface LoopBack 1
[r1-LoopBack1]ip address 172.16.2.1 24
[r1-LoopBack1]q
[r1]interface LoopBack 2	
[r1-LoopBack2]ip address 172.16.3.1 24

r2

[r2]interface g 0/0/0
[r2-GigabitEthernet0/0/0]ip address 192.168.1.2 24
[r2-GigabitEthernet0/0/0]q
[r2]interface g 0/0/1
[r2-GigabitEthernet0/0/1]ip address 192.168.2.1 24

同理，r3,r4,r5,r6,r7。。。。。

1.使用合理IP地址规划网络，各自创建环回接口
2.R1创建环回 172.16.1.1/24 172.16.2.1/24 172.16.3.1/24

[r1]interface LoopBack 0
[r1-LoopBack0]ip address 172.16.1.1 24
[r1-LoopBack0]q
[r1]interface LoopBack 1
[r1-LoopBack1]ip address 172.16.2.1 24
[r1-LoopBack1]q
[r1]interface LoopBack 2	
[r1-LoopBack2]ip address 172.16.3.1 24

[r2]interface LoopBack 0
[r2-LoopBack0]ip add	
[r2-LoopBack0]ip address 2.2.2.2 24

[r3]interface LoopBack 0
[r3-LoopBack0]ip add	
[r3-LoopBack0]ip address 3.3.3.3 24

[r4]interface LoopBack 0
[r4-LoopBack0]ip add	
[r4-LoopBack0]ip address 4.4.4.4 24

[r5]interface LoopBack 0
[r5-LoopBack0]ip add	
[r5-LoopBack0]ip address 5.5.5.5 24

[r6]interface LoopBack 0
[r6-LoopBack0]ip add	
[r6-LoopBack0]ip address 6.6.6.6 24

[r7]interface LoopBack 0
[r7-LoopBack0]ip add	
[r7-LoopBack0]ip address 7.7.7.7 24

写rip

r1

[r1]rip 100	
[r1-rip-100]version 2
[r1-rip-100]undo summary
[r1-rip-100]network 172.16.0.0
[r1-rip-100]network 192.168.1.0
[r1-rip-100]network 192.168.3.0

 r2,r3,r4,r5一样

r6,r7把版本号改为1

3.要求R3使用R2访问R1环回

[r3]acl 2000
[r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r3-acl-basic-2000]in g0/0/0
[r3-GigabitEthernet0/0/0]rip metricin 2000 3

         

4.减少路由条目数量，

[r1]in g0/0/0
[r1-GigabitEthernet0/0/0]rip split-horizon 
[r1-GigabitEthernet0/0/0]rip summary-address 172.16.0.0 255.255.252.0
[r1-GigabitEthernet0/0/0]in g0/0/1	
[r1-GigabitEthernet0/0/1]rip summary-address 172.16.0.0 255.255.252.0

防止路由黑洞

[r1]ip route-static 172.16.0.0 22 null 0

R1-R2之间增加路由传递安全性

[r1]interface g 0/0/0
[r1-GigabitEthernet0/0/0]rip authentication-mode md5 usual cipher 111

[r2]interface g 0/0/0
[r2-GigabitEthernet0/0/0]rip authentication-mode md5 usual cipher 111

5.R5创建一个环回模拟运营商，不能通告

[r5]interface LoopBack 0
[r5-LoopBack0]ip add	
[r5-LoopBack0]ip address 5.5.5.5 24
#不宣告5.5.5.5

6.R1 telnet R2环回实际telnet 到R7上

7.R6-R7路由器不能学习到达R1环回路由

(这个我再研究研究0wO)