Dynamic Multipoint Virtual Private Network

Dynamic Multipoint Virtual Private Network (DMVPN) is a dynamic tunneling form of a virtual private network (VPN) supported on Cisco IOS-based routers, Huawei AR G3 routers, and Unix-like operating systems.

DMVPN provides the capability for creating a dynamic-mesh VPN network without having to statically pre-configure all possible tunnel end-point peers, such as IPsec and ISAKMP peers. DMVPN is initially configured to build a hub-and-spoke network by statically configuring the hubs (VPN headends) on the spokes; no change in the configuration on the hub is required to accept new spokes. Using this initial hub-and-spoke network, tunnels between spokes are dynamically built on demand without additional configuration on the hubs or spokes. This dynamic-mesh capability alleviates the need for any load on the hub to route data between the spoke networks.

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