What setting must be enabled for an ADVPN configuration between Hub1 and Hub2?

In an ADVPN (Automatic Dynamic VPN) configuration, enabling auto-discovery is crucial for the hubs to correctly establish connections with each other in a dynamic manner. By setting the auto-discovery forwarder to enabled, you allow the hub devices, such as Hub1 and Hub2, to automatically discover each other’s presence and status on the network. This capability is essential for the proper functioning of ADVPN, as it facilitates the establishment of direct tunnels between spoke devices via the hubs without requiring manual configuration for every connection.

In ADVPN setups, dynamic peer discovery enhances scalability and reduces administrative overhead, as new spokes can join the network without requiring preconfigured settings on all other devices. This setting initiates the communication and tunnel creation process between the hubs, ensuring that network operations remain efficient and adaptive to network changes.