Apple AirPort Networks Guía para resolver problemas descargar pdf (Pagina 55)

Appendix D: What and

Where Is a MAC Address?

The MAC, or Media Access Control, address is a unique, factory-

assigned address for every Ethernet and Wi-Fi adapter. A MAC address

consists of six two-digit hexadecimal numbers separated by colons,

such as 0C:F2:33:01:02:FC. (Hexadecimal, or hex, is the base 16

number system, with values running from 0 to 9, and then from A to

F for 10 to 15.) The first three numbers are assigned to a manufacturer

by a coordinating association; Apple has at least two common ranges,

which begin with 00:0a:95 and 00:03:93. MAC addresses are often

used for filtering, authentication, and WDS, often without requiring

direct entry.

Some routers from other makers can have their MAC address changed

in a process called MAC cloning or spoofing, which is sometimes

useful when you have to register a computer’s MAC address, but then

want to use a router in its place. No Apple base station has ever offered

this capability, although Mac OS X allows it for Macintoshes via a

Terminal command.

Here are various ways to locate Mac addresses:

From a base station:

For a base station that pre-dates the 2013 802.11ac models, look on the

bottom of the unit.

•

The AirPort ID or Wi-Fi

ID is the wireless MAC address. From

2009 to 2012, all models of the Extreme and Time Capsule as well

as the 2012 Express have two AirPort IDs, one for each band’s radio,

and they are noted by band on the base station.

• The Ethernet ID is the

WAN port’s MAC address.

Or in AirPort Utility for Mac, select a base station and hover over the

network’s name, as in Fi

gure 104.

189

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Apple AirPort Networks Guía para resolver problemas Pagina 55