Auto Discovery VPN (ADVPN) protocol

AutoVPN deployments can use the ADVPN protocol to dynamically establish spoke-to-spoke VPN tunnels. When passing traffic from one spoke to another spoke, the hub can suggest that the spokes establish a direct security association, or "shortcut," between each other. Shortcuts can be established and torn down dynamically, resulting in better network resource utilization and reduced reliance on a centrally located hub. On the hub, configure advpn suggester at the [edit security ike gateway gateway-name] hierarchy level. On spokes, configure advpn partner at the [edit security ike gateway gateway-name] hierarchy level. ADVPN is supported with IKEv2 only.