The Data Link Layer delivers data frames using the hardware addres or MAC Address. The MAC address is a hexadecimal address unique to that particular device. The Data Link layer breaks a segment into frames and encapsulates the frame with a header that contains the source and destination MAC address.
The Data Link Layer is generally referred to as “Layer 2”, and MAC addresses as “Layer 2 addresses”. Error control and notification are performed on frames at this level.
The Data Link Layer is generally referred to as “Layer 2”, and MAC addresses as “Layer 2 addresses”. Error control and notification are performed on frames at this level.