IP/MAC Address Finder provides visibility into how WhatsUp Gold identified or 'sighted' a resource showing a particular hardware (MAC) or network (IP) address. You can use it for gaining insight on how WhatsUp Gold Discovery came to identify the device on your network.

Tip: IP/MAC Address Finder can be a powerful diagnostic tool for scenarios of MAC address spoofing, stale ARP cache detection, and so on.

To find an IP by way of its MAC or IP address:

  • IP Address. Enter the IP address used by a network interface on the device. Leave blank if you are scanning for a MAC address. --or--Click Select to select a device, in the Select Devices dialog, and choose from already added or discovered devices.
    Note: The IP/MAC Finder tool does not support IPv6 addresses.
  • MAC Address. Enter The MAC address (for the network interface card) for which you are scanning the network.
  • Use Network Devices Only. Select to display the IP/MAC sightings found only on network device types (routers and switches, for example). --or--Clear (leave unselected) to display all IP/MAC sightings found on all device types.
  • Find/Clear. Click to return/clear result records ('sightings') of the IP or MAC returned from network resources.
    • Device. Name of the network device.
    • IP Address. Last known IP of the device that reported the results record.
    • Interface Name. Lists the network interface that is routing or forwarding traffic to the IP or MAC address.
    • Is Linked To. Lists the network devices to which the device is linked.
    • Sighting Type. Lists where the information was seen, such as an ARP cache, a forwarding database, or the device itself.