Two way republication experiment

 R1 Except for self loopback , Plus several loops
172.16.1.0/24 deny

172.16.2.0/24 type 1

172.16.3.0/24 cost 6

172.16.4.0/24 type 1 cost 9
Change the above parameters

First step ： Subnet partition ,ip Address configuration

To facilitate configuration, we divide the following subnets

We will r1-r5 The loopback interface network segment of the router is divided into 1.1.1.0 ,2.2.2.0 ,3.3.3.0 ,4.4.4.0

r1,r2 The network segment between is 12.1.1.0

r1,r3 The network segment between is 13.1.1.0

r2,r4 The network segment between is 24.1.1.0

r3,r4 The network segment between is 34.1.1.0

ip Address configuration

Configure each router according to the plan of subnet division mentioned above ip Address

ip The interface is summarized as follows ：

r1

r2

r3        

r4

The second step ： Boot protocol , Announce segment  

We are r1,r2,r3 Start the rip Protocol and announce their respective network segments

r1

 

r2

r3 

We are r4,r2,r3 Start the rip Protocol and announce their respective network segments

r4

 

r2

r3

 

The third step ： Configure routing policies

stay asbr Write routing policy on Router

r2 

r3

 

Step four ： Conduct bidirectional republication on the border router

r2

r3

  Step five ： stay r4 Check whether the route learns the extraterritorial route on the router  

Step six ： test

stay r1 On ping Each router loopback tests whether the whole network can reach