DMVPN Point to Point GRE and mGRE – DMVPN spokes can use either point-to-point GRE tunnels or multipoint GRE tunnel interface. Recently, I received a question regarding DMVPN.
DMVPN Basics- In this article you will learn about the DMVPN design along with various IGP protocols such as EIGRP,OSPF and BGP. I am explaining this topic in deep detail in my Instructor Led CCDE and Self Paced CCDE course.
MPLS VPN and DMVPN Design – MPLS VPN is used mostly as primary connectivity and DMVPN as a backup in the small medium business. You might see in some cases DMVPN is the only the circuit between remote offices and the datacenter/HQ, or for some applications MPLS VPN might be the primary,DMVPN for the others.