The MAC address belongs to the data link layer of the Open Systems Interconnection ( OSI) model, which encapsulates the MAC address of the source and destination in the header of each data frame to ensure node-to-node communication.Įach network interface in a device is assigned a unique MAC address, so it's possible for a device to have more than one MAC address.
A MAC address is required when trying to locate a device or when performing diagnostics on a network device.
Primarily specified as a unique identifier during device manufacturing, the MAC address is often found on a device's network interface card ( NIC). What is a MAC address (media access control address)?Ī MAC address (media access control address) is a 12-digit hexadecimal number assigned to each device connected to the network.
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