PRTG Manual: Ping Response Poller
The ping response poller tool allows you to monitor the real time ping response of devices on a timed interval.
The ping poller can be launched from the 'Tools' tab on the main view of UVexplorer. It can also be launched from the device context menu available on the device grid and the topology map.
To ping devices with the ping poller you add and select devices in the device grid, set the poll interval, and press the start button. The poller will continue to ping the devices, keeping track and graphing the response time, until the dialog is closed or the stop button is pressed.
To add devices to the poller press the add button 
above the device grid. Devices added to the poller will only be polled when they are selected using the checkbox next to the device. If a poll is in process when a new device is added and selected the poller must be restarted before the newly selected device will be included in the poll.
The interval sets the frequency of the poll in seconds; the max interval is 120 seconds. The interval can only be changed when the poller is not running.
The results chart contains the response times and poll intervals of the devices being polled. The response times are displayed in milliseconds. The interval contains the time the poll was performed. The legend maps the devices to the response time lines in the chart.
The result grid displays the devices and their UP or DOWN status of the ping response along with the response time.
The 'Name' column contains the display name of the polled device.
The 'IP Address' column contains the primary IP address of the polled device.
The 'Has Reply' column contains an up or down arrow indicating UP for a ping response, and DOWN for no response.
The 'Response Time' column contains the time in milliseconds it took for the device to respond. If the device did not respond the response time is empty.
