Virtual Private Networks (VPN) Dynamic Multipoint VPN (DMVPN)
Digi Connect IT® 4 User Guide
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6. Save the configuration and apply the change:
(config network interface gre_interface2)> save
Configuration saved.
>
7. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
Dynamic Multipoint VPN (DMVPN)
Dynamic Multipoint Virtual Private Network (DMVPN) is a dynamic tunneling form of a virtual private
network (VPN), using a multi spoke-to-hub network in which the network addresses of the spoke
routers do not need to be known, and therefore do not need to be configured in the hub router.
One advantage to this form of VPN is a scalable network in which the size of the hub configuration is
minimized. When one spoke of the network needs to send traffic to another spoke, a direct transfer is
possible without having to add any load onto the hub. This is achieved by the creation of a dynamic
GRE tunnel directly to the other spoke. The network address of the target spoke is resolved with the
use of Next Hop Resolution Protocol (NHRP).
This section contains the following topics:
Configure a DMVPN spoke 434
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