DMVPN Phase 1 RIP Routing

Hello Tariq

It seems that others are having similar issues with the ip summary address command when using the RIP protocol. Even so, the solution is not the default-information originate command.

These two commands do different things.

Default-information originate will advertise default route, while ip summary-address rip 0.0.0.0 0.0.0.0 will advertise only default route and will hide topology details. Remember that the ip summary-address command can use a more specific route, such as ip summary-address rip 10.2.0.0 255.255.0.0, it does not have to be 0.0.0.0 0.0.0.0.

Others have had similar problems, and when they change the routing protocol from RIP to EIGRP, it seems that the config works. My suspicion is that you may be using RIP v1 instead of v2. Can you verify that you are indeed using v2?

Then we can take a look at other issues that may be causing this.

I hope this has been helpful!

Laz