Device Performance Monitoring features offer a practical way to monitor load on the devices configured in the Manager. Pro-active capacity planning is made possible by the metrics that can be configured and monitored in the Manager interface. The metrics and thresholds provide an easy way to isolate the device as the root cause of a network failure or to rule it out as the cause. It is possible to view the values of key metrics in 'real-time' (every few seconds) as a way to see how the device is behaving at any given moment in time. Decisions on capacity planning to determine when to replace the device in favor of a larger one are facilitated by device Performance Monitoring. Troubleshooting is a special use case for when more information is needed in order to identify where things are going wrong.
Note
In case of MDR, the device will try to send alerts and system events to both the Managers. If one of the Managers is not reachable, only the reachable one will get the event. Consequently, Performance Monitoring threshold faults are generated only in respect of the reachable Manager. So there are chances that some of the alarms might get missed or not get cleared in the Managers.