DYNAMIC MULTIPOINT VPN (DMVPN) DMVPN is combination of 4 things: Multipoint GRE. Next Hop Resolution Protocol (NHRP). Crypto IPsec. Routing that running over the network. Phase1: All the traffic has to go from Spoke1 to the Hub to Spoke2 (No Spoke to Spoke tunnels). Running mGRE (multiGRE) on the hub only…