I'm having an issue with device monitoring. We've recently set up device monitoring for all our servers, and it worked well for a few weeks, regularly notifying us if a server failed to respond to ping requests etc. Since about a week ago, it doesn't work anymore at all. We still get alerts from the agents, but no device monitoring anymore. I've checked to ensure services are running, read event logs, rebooted the LANDesk server etc but still we continue to experience the problem.
Has anyone else had this issue? How did you resolve it?