Device groups are organizational folders that let you quickly find and diagnose problems with devices in your database. You can organize these folders in any way that makes sense to you, so feel free to experiment with different configurations.
The Map View is based on the device group folders, meaning that you will have a different map for each device group. If a folder contains a subfolder, you can double-click on the folder in the map view to display the map in the subfolder.
During discovery, device groups are created for each subnetwork that is found on the network that was scanned. At the top level of the My Network tree, the entire scan is contained in a folder identifying the type of scan that was made and the date the scan was made. Devices that are already in the database are added to the new scan tree as a shortcut to the original device reference. This is only to relay that there are more than one reference in the My Network tree, as you configure devices by clicking either the original reference icon or the shortcut. Functionally, they serve the same purpose and display the same device state change.
Each folder in the My Network tree has a device state indicator on the folder icon. This indicator shows the worst state across all of the devices contained in that folder.