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The first 24 bits of a network card's MAC address uniquely identify
the network card's vendor. This 24-bit number is called the OUI
("Organizationally Unique Identifier"). The NIC Vendor
Identifier is a tool that allows you to look up a vendor name by
MAC address. To look up a vendor name, click
Tools
=>NIC
Vendor Identifier,
enter a MAC address, and click
Find.
The vendor's name will be displayed. By default, CommView replaces
the first three octets of the MAC address by the adapter vendor
name in the
Packets
tab. This behavior may be changed by unchecking the
Display vendor names in MAC addresses
checkbox in the
General
tab of the
program Options dialog.
The list of vendors is contained in the MACS.TXT file located
in the CommView application folder. You can manually edit this list
to add/modify information.
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