MAC (Medium/Media Access Control) address, or MAC address and hardware address, used to define the position of network equipment. The network layer in the OSI model, the third layer is responsible for the IP address, the second data link layer is responsible for MAC address. So a network card will have a MAC address, the only global fixed but may correspond to multiple IP addresses.
If the same of 2 or more MAC address in a AP area, the function of wireless will be fail.
MAC Address Resolution~
MAC (Medium/MediaAccess Control, media access Control) MAC address is burning in NetworkInterfaceCard (NIC, NIC). The MAC address, also known as hardware address, consists of 48 bits/bit long (6 bytes/byte), and hexadecimal Numbers. 0-23 called organizational unique identifier (organizationally unique, is to identify the identity of the LAN (local area network (LAN) node. 24-47 is assigned by manufacturer yourself. 40 of them sign a multicast address. Network card physical address is usually burn-in card by the card manufacturer of an EPROM (a flash memory chips, usually can wipe) by the program, it is stored data transmission on which real identity data from computer and receiving data to the host address. That is to say, in the process of transmission network at the bottom of the physical, is through the physical address to identify the host, it is also the world‘s only commonly. Famous Ethernet card, for instance, the physical address is 48 bit integer (bits), such as: 44-45-53-54-00-00, in machine readable way.
Address the role of MAC ~
