MAC Address - определение. Что такое MAC Address
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Что (кто) такое MAC Address - определение

UNIQUE IDENTIFIER ASSIGNED TO NETWORK INTERFACES FOR COMMUNICATIONS ON THE PHYSICAL NETWORK SEGMENT
Burned-in address; Locally Administered Address; Univerally Administered Address; MAC-48; EUI-48; EUI-64; Mac address; MAC Address; Ethernet address; MAC-address; EUI64; MAC addresses; Media access control address; Mac Address; Ethernet Hardware Address; Extended Unique Identifier; Hw address; Burned-in addresses; Burned-In Address; Hardware address; Hardware Address; Media Access Control address; Locally administered address
  • The structure of a 48-bit MAC address. The b0 bit distinguishes [[multicast]] and [[unicast]] addressing and the b1 bit distinguishes universal and locally administered addressing.
  • Label of a [[UMTS]] router with MAC addresses for [[LAN]] and [[WLAN]] modules

MAC address         
The hardware address of a device connected to a shared network medium. See also Media Access Control.
Ethernet address         
<networking> (Or "MAC address") The physical address identifying an individual Ethernet controller board. An Ethernet addess is a 48-bit number aabbccddeeff where a-f are hexadecimal digits. The first 24 bits, aabbcc, identify the manufacturer of the controller. The Ethernet address is hard-wired on some controllers, stored in a ROM on some, and others allow it to be changed from software. It is usually written as six hexadecimal numbers, e.g. 08:00:20:03:72:DC. See also ARP, Internet address. (1996-02-21)
MAC address anonymization         
MAC ADDRESS OBFUSCATION METHODS, GENERALLY FOR PUBLIC REPORTING
MAC Address Anonymization
MAC address anonymization performs a one-way function on a MAC address so that the result may be used in tracking systems for reporting and the general public, while making it nearly impossible to obtain the original MAC address from the result. The idea is that this process allows companies like Google, Apple and CrowdVision - which track users movements via computer hardware to simultaneously preserve the identities of the people they are tracking, as well as the hardware itself.

Википедия

MAC address

A media access control address (MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. Within the Open Systems Interconnection (OSI) network model, MAC addresses are used in the medium access control protocol sublayer of the data link layer. As typically represented, MAC addresses are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons, or without a separator.

MAC addresses are primarily assigned by device manufacturers, and are therefore often referred to as the burned-in address, or as an Ethernet hardware address, hardware address, or physical address. Each address can be stored in hardware, such as the card's read-only memory, or by a firmware mechanism. Many network interfaces, however, support changing their MAC address. The address typically includes a manufacturer's organizationally unique identifier (OUI). MAC addresses are formed according to the principles of two numbering spaces based on extended unique identifiers (EUIs) managed by the Institute of Electrical and Electronics Engineers (IEEE): EUI-48—which replaces the obsolete term MAC-48—and EUI-64.

Network nodes with multiple network interfaces, such as routers and multilayer switches, must have a unique MAC address for each NIC in the same network. However, two NICs connected to two different networks can share the same MAC address.