Two FortiNAC devices have been configured in an HA configuration.

The primary device continues to operate as the in-control device and changes the status or secondary device to contact lost.

The primary device changes its designation to secondary, and the secondary device changes to primary.

The primary device shuts down NAC processes and changes to a management down status.

The primary device waits 3 minutes and attempts to re-establish the HA heartbeat before attempting a second ping of the gateway.