![]() ![]() In that event, a MAC address usually encodes the manufacturer's registered identification number and could be called the burned-in address (BIA). The manufacturer of a network interface controller (NIC) assigns MAC addresses which are stored in its hardware, such as a card's read-only memory or other firmware. ![]() More sophisticated network devices such as routers and multilayer switches could even require several permanent MAC addresses. A network node may have a few network interface controllers (NICs), and each of them will have its own unique MAC address.Thus, MAC addresses will be used in one of the sublayers of the medium access control protocol. For the majority of IEEE 802 network technologies, including Ethernet and Wi-Fi, MAC addresses function as network addresses. It’s an identifier communicating at the data link layer of a specific network segment. ![]() A device’s MAC address (Media Access Control address) is a unique sequence of numbers assigned to a network interface controller. ![]()
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