MegaVision Network Management System - Manual (Page 55)

If there is only a vendor part of MAC address, MegaVision will append the remaining digits.
If there is no corresponding alias entry just the MAC address will be displayed. Please, note
that there are some other windows (besides Alias Manager), which allow assigning aliases
to MAC Addresses, e.g. Add/Edit ARP Entry window, which is accessible via ARP Table
window.