Discovered SNMP devices are identified by their device type, such as computer, network printer, and so on. For the device type to be identified, Network Discovery must know the SNMP device classification about that type. Network Discovery has a predefined list of common SNMP devices. If the device that is discovered is in that list, then it can be identified. If the device is not in the list, it is identified with the generic resource type 'Network Resource'.
You can view the predefined list on the Device Classifications page. This page lists classifications of commonly used devices. This data includes the SNMP object ID, device type, manufacturer, and device model. If the SNMP object ID that is discovered matches an item from this list, the data is populated.
Before you run a Network Discovery task, you can review the device classification list, which contains common manufacturers. If you find the list incomplete, you can add or edit classifications to customize this list for your network environment. Taking time to review and customize the device classification list results in more complete discovery data. Doing this task before a discovery is not required. You can do this task after a discovery, but you have to re-run the discovery to get the updated classification.
If you change the information for an existing SNMP device classification, you need to rescan any device that was previously classified using that entry. Rescanning is necessary so that the devices with changed information are reclassified.
After you run a Network Discovery task, you may have devices with an unknown classification. If you know the Object ID for these devices, you can add them to the classification list. The next time you run a Network Discovery task, the devices will use the updated list to be classified.