You can configure DFM's Notification Services to send an email or syslog message when an OperationallyDown or Unresponsive event occurs. This is done under DFM > Notification Services. Essentially, you will first define a Notification Group which matches the devices and events of which you are interested, then you will define a syslog or email notification subscription to send the actual notification.
To search for end hosts by MAC or IP, go to Campus Manager > User Tracking > Reports.
