DMVPN Phase 3 Basic Configuration

[lagapidis (Lazarus Agapidis)]

Hello Pradyumna

Take a look at this post:

Introduction to DMVPN

Hello Heng This is a very good question. Looking at the process in more detail, when using Phase 3. Initially, (and that is the key word) all spoke to spoke packets are switched across the hub. In order for a spoke to learn about the true NBMA IP address of another spoke, the NHRP redirect message is used. So when a hub receives an IP packet inbound on its interface and switches it out of the same interface, it sends a special NHRP redirect message to the source indicating that this is a su…

You should find your answer there.

I hope this has been helpful!

Laz