Advertise default routes using RIP

Consider the following example network:

RIP default route example network

In the network above we have three routers running RIP. Router R3 is connected to the ISP’s internet router and and has a static default route that points to it. It is possible to advertise that default route using RIP to other routers in the local network. On R3, we simply need to enter the default-information originate command in the RIP configuration mode.

Here is the configuration on R3:

R3(config)#ip route
R3(config)#router rip
R3(config-router)#default-information originate

R1 and R2 don’t need any additional configuration – they learn the default route just like any other RIP route:

R1#show ip route rip
R* [120/1] via, 00:00:04, GigabitEthernet0/0

As you can see from the output above, R1 learned about the default route via RIP. The route is marked with an asterisk (*), indicating that the route is a candidate to be the default route.

Prerequisites for 200-301

200-301 is a single exam, consisting of about 120 questions. It covers a wide range of topics, such as routing and switching, security, wireless networking, and even some programming concepts. As with other Cisco certifications, you can take it at any of the Pearson VUE certification centers.

The recommended training program that can be taken at a Cisco academy is called Implementing and Administering Cisco Solutions (CCNA). The successful completion of a training course will get you a training badge.

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