DMVPN Phase 1 RIP Routing

Lessons Discussion
37

Hello Scott

Let’s say we have a single Hub that uses a default route to connect to the Internet. Let’s assume that we have three spokes, and behind each spoke we have the following subnets:

  • Spoke 1: 192.168.4.0/24
  • Spoke 2: 192.168.5.0/24
  • Spoke 3: 192.168.6.0/24

We want to create a summary route that includes all of these networks. In the lesson, Rene used a default route like so:

Hub(config-if)#ip summary-address rip 0.0.0.0 0.0.0.0

But this won’t work since our default route is used to connect to the Internet. We need a summary route that will include all of the subnets of the spoke routers. We can do the following:

Hub(config-if)#ip summary-address rip 192.168.4.0 255.255.252.0

This network and subnet mask combination includes all the subnets on all spokes. For more information on creating summary routes, take a look at this lesson:

I hope this has been helpful!

Laz

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