Next Hop Resolution Protocol (NHRP)

NHRP allows mapping a tunnel interface IP address (overlay network) to the respective underlying network interface IP address.

NHRP tunnel requires that all intervening nodes should be able to find a path to any of the other nodes.

Each node should at least know one other overlay node (and respective overlay and underlying addresses) through which he will try to find the other node's address mappings.

• Next Hop Server (NHS).

Moreover, all nodes must be configured in a way that all nodes have at least one valid path to all other nodes - forming a partial mesh.

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