要求：

R1-R2-R3-R4-R5 RIP 100运行版本2
R6-R7 RIP 200 运行版本1
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
3.要求R3使用R2访问R1环回
4.减少路由条目数量，增加路由传递安全性
5.R5创建一个环回模拟运营商，不能通告
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
8.全网可达

分析：

1.配置IP地址

2.配置环回地址

3.启动RIP协议,使用version 1，进行RIP宣告，宣告的是主类地址

配置：

R1配置基本路由信息：

[R1-GigabitEthernet0/0/0]ip address 12.1.1.1 24

[R1-GigabitEthernet0/0/1]ip address 14.1.1.1 24

[R1]interface LoopBack 0

[R1-LoopBack0]ip address 172.16.1.1 24

[R1]interface  LoopBack 1
  
[R1-LoopBack1]ip address 172.168.2.1 24

[R1]interface LoopBack 2
    
[R1-LoopBack2]ip address 172.168.3.1 24

R2配置基本路由信息：

[r2-GigabitEthernet0/0/0]ip address 12.1.1.2 24

[r2-GigabitEthernet0/0/1]ip address 23.1.1.1 24

[r2]interface  LoopBack  0
 
[r2-LoopBack0]ip address 2.2.2.2 32

R3配置基本路由信息：

[r3-GigabitEthernet0/0/0]ip address 23.1.1.2 24

[r3-GigabitEthernet0/0/1]ip address 43.1.1.2 24

[r3]interface LoopBack0

[r3-LoopBack0]ip address  3.3.3.3 32

R4配置基本路由信息：

[r4-GigabitEthernet0/0/0]ip address 43.1.1.1 24
 
[r4-GigabitEthernet0/0/1]ip address 14.1.1.2 24
 
[r4-GigabitEthernet0/0/2]ip address 45.1.1.1 24

[r4-GigabitEthernet4/0/0]ip address 46.1.1.1 24

[r4]interface LoopBack 0

[r4-LoopBack0]ip address 4.4.4.4 32

R5配置基本路由信息：

[R5]interface  g0/0/0


[r5-GigabitEthernet0/0/0]ip address 45.1.1.2 24

R6配置基本路由信息：

[r6-GigabitEthernet0/0/0]ip address 46.1.1.2 24

[r6-GigabitEthernet0/0/1]ip address 67.1.1.1 24
  
[r6]interface LoopBack 0

[r6-LoopBack0]ip  address 6.6.6.6 32

R7配置基本路由信息：

[r7-GigabitEthernet0/0/0]ip address 67.1.1.2 24
 
[r7]int LoopBack 0

[r7-LoopBack0]ip address 7.7.7.7 32

RIP配置基本路由信息：

[R1]rip 1

[R1-rip-1]version 2

[R1-rip-1]network 12.0.0.0

[R1-rip-1]network 14.0.0.0



[r2]rip 

[r2-rip-1]version 2

[r2-rip-1]network 12.0.0.0

[r2-rip-1]network 23.0.0.0



[r3]rip

[r3-rip-1]version 2

[r3-rip-1]network 23.0.0.0

[r3-rip-1]network 43.0.0.0



[r4]rip

[r4-rip-1]version 2

[r4-rip-1]network 14.0.0.0

[r4-rip-1]network 43.0.0.0

[r4-rip-1]network 45.0.0.0

[r4-rip-1]network 46.0.0.0




[r5-rip-1]version 2
   
[r5-rip-1]network 45.0.0.0



[r6]rip
    
[r6-rip-1]version 1

[r6-rip-1]network 46.0.0.0

[r6-rip-1]network 67.0.0.0




[r7-rip-1]version 1
   
[r7-rip-1]network 67.0.0.0

R3通过R2来访问R1的环回

//ACL
[r3]acl 2000

[r3-acl-basic-2000]rule permit source 172.16.0.0 0

[r3]interface g0/0/0

[r3-GigabitEthernet0/0/0]rip metricout 2000 3


//手工汇总

[R1]interface g0/0/0

[R1-GigabitEthernet0/0/0]rip summary-address 172.16.0.0 255.255.252.0

[R1-GigabitEthernet0/0/1]rip summary-address 172.16.0.0 255.255.252.0

//加快收敛
[R1-rip-1]timers  rip  15 60 100
 
[R1]int g0/0/0

//安全加密
[R1-GigabitEthernet0/0/0]rip authentication-mode  md5 nonstandard  plain huawei 

R1 telnet R2环回实际telnet 到R7上

[r2]user-interface vty 0 4

[r2-ui-vty0-4]set authentication  password  cipher huawei

//R1访问R7为外部访问内部，需要改变目标地址–将2.2.2.2转换为7.7.7.7
在R2与R1互连的接口做地址转换
[r2-GigabitEthernet0/0/0]nat server protocol  tcp global  interface loopback 0 t
elnet inside 7.7.7.7 telnet 


[r7]user-interface vty  0 4 

[r7-ui-vty0-4]set authentication  password  cipher huawei

//回包时源为7.7.7.7，目标为12.1.1.0，要保证源访问目标时为7-6-4-3-2-1

[r4]acl 2001

[r4-acl-basic-2001]rule permit  source 12.1.1.0 0
[r4-acl-basic-2001]int g0/0/1

[r4-GigabitEthernet0/0/1]rip metricout 2001 4

//R5为运营商
[r5-rip-1]default-route originate 

R6-R7路由器不能学习到达R1环回路由

[r6]acl 2000
 
[r6-acl-basic-2000]rule  deny source 172.16.0.0 0

[r6-acl-basic-2000]rule  permit source any

[r6]rip

[r6-rip-1]filter-policy  2000 import g0/0/0