I believe a device availability report is what you are looking for. Execute the Resource Manager Essentials\>Administration\>Availability\>Change Polling Options page and select at least one view to be polled for reachability information. Afterwards, wait for several polling cycles before retrying the report again.
(That's under LMS 2.2 - I don't have a 2.5 box in front of me to check the syntax but it's along those lines.)
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...