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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. The IEEE 802 MAC address originally comes from the Xerox Network Systems Ethernet addressing scheme. [1] This 48-bit address space contains potentially 2 48 (over 281 trillion
The address size used in logical block addressing was increased to 48 bits with the introduction of ATA-6. The Ext4 file system physically limits the file block count to 48 bits. The minimal implementation of the x86-64 architecture provides 48-bit addressing encoded into 64 bits; future versions of the architecture can expand this without ...
v. t. e. In IEEE 802 LAN/MAN standards, the medium access control ( MAC ), also called media access control, is the layer that controls the hardware responsible for interaction with the wired (electrical or optical) or wireless transmission medium. The MAC sublayer and the logical link control (LLC) sublayer together make up the data link layer.
The 48-bit MAC address was adopted by other IEEE 802 networking standards, including IEEE 802.11 , as well as by FDDI. EtherType values are also used in Subnetwork Access Protocol (SNAP) headers. Ethernet is widely used in homes and industry, and interworks well with wireless Wi-Fi technologies.
A 64-bit interface identifier can be derived from the interface's 48-bit MAC address, although stable privacy addresses are now recommended as a default instead. [2] A MAC address 00-0C-29-0C-47-D5 is turned into a 64-bit EUI-64 by inserting FF-FE in the middle: 00-0C-29- FF-FE -0C-47-D5 .
Version 1 concatenates the 48-bit MAC address of the "node" (that is, the computer generating the UUID), with a 60-bit timestamp, being the number of 100-nanosecond intervals since midnight 15 October 1582 Coordinated Universal Time (UTC), the date on which the Gregorian calendar was first adopted by the bulk of Europe, which at that time was ...
Each basic service set has a unique identifier, a BSSID, which is a 48-bit number that follows MAC address conventions. [4] An infrastructure BSSID is usually non-configurable, in which case it is either preset during manufacture or mathematically derived from a preset value such as a serial number or a MAC address of another network interface.
Remove references to bytes. Fix bit numbering. ~~~~ 13:46, 19 October 2008: 475 × 400 (45 KB) Julijane {{Information |Description=Diagram showing the structure of a MAC-48 network address, explicitly showing the positions of the multicast/unicast bit and the OUI/local address type bit. |Source=SVG drawing based on PNG uploaded by [[w:User:Vtra