MAC Address

MAC (Media Access Control) Address is a unique number assigned to each network interface adapter on a network. This layer works at the physical layer of the OSI reference model. NIC (Network Interface Card) manufacturing companies have to get unique MAC address block from IEEE. Two network cards in the world can never have the same MAC address. Also standardized data link layer address that is required for every port or device that connects to a LAN. Other devices in the network use these addresses to locate specific ports in the network. MAC addresses are six bytes long and include a 3-byte vendor code that is controlled by the IEEE. Also referred to as a hardware address, MAC-layer address or physical address.