VPN keepalives can improve the speed with which the Branch Gateway detects loss of connectivity with the remote VPN peer. Two types of VPN keepalives are available. You can use either or both methods:
Enable DPD keepalives, a standard VPN keepalive, that check whether the remote peer is up. This type of detection can be used only if it is supported also by the remote peer.
Bind peer status to an object tracker. Object trackers track the state (up/down) of remote devices using keepalive probes, and notify registered applications such as VPN when the state changes. Object tracking allows monitoring of hosts inside the remote peer’s protected network, not just of the remote peer itself as in DPD.
