This is the third and final post regarding DMVPN which will cover Phase-3. Phase-2 and Phase-3 are very similar. In both phases, spokes can access each other directly by bringing an on demand tunnel. That said, there is some minor configuration difference and specific commands that we need to add to the tunnel interfaces of the hub and spokes. I feel like I have covered a good amount of static mapping in the previous two posts, I will just use dynamic mapping here. R1: interface Tunnel0 ip address 10.1.1.1 255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp network-id 111 ip nhrp redirect tunnel source FastEthernet0/0 tunnel mode gre multipoint R2: interface Tunnel0 ip address 10.1.1.2 255.255.255.0 no ip split-horizon eigrp 100