Most network monitoring solutions use IP addresses to poll the devices and fetch performance data, but some network admins might want to poll their devices using DNS names of the devices. OpManager allows you to select whether you want to poll your devices using the IP address of the device or the DNS name. This setting can be controlled throughout OpManager or can also be configured for individual devices.
Go to Settings → Monitoring → Monitor settings, and select which mode you want to use to poll the devices in your network. Once you're done, click 'Save'.
Note: Changes in the global setting apply only for devices that will be discovered in the future. The polling method of devices already discovered will not be affected in any way.
You can also configure this setting individually for any device. To configure it: