Computer Networks - What is MAC address?

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What is MAC address?

The address for a device as it is identified at the Media Access Control (MAC) layer in the network architecture. MAC address is usually stored in ROM on the network adapter card and is unique.

Total Answers and Comments: 4

Last Update: April 21, 2007

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Submitted by: lucky_2friends

Short for Media Access Control address, a hardware address that uniquely identifies each node of a network. In IEEE 802 networks, the Data Link Control (DLC) layer of the OSI Reference Model is divided into two sublayers: the Logical Link Control (LLC) layer and the Media Access Control (MAC) layer. The MAC layer interfaces directly with the network medium. Consequently, each different type of network medium requires a different MAC layer.

On networks that do not conform to the IEEE 802 standards but do conform to the OSI Reference Model, the node address is called the Data Link Control (DLC) address.

See a breakdown of the seven OSI layers in the Quick Reference section of Webopedia.

Above answer was rated as good by the following members:
d.code, shandhiya

December 16, 2005 02:37:54

sunil

RE: What is MAC address

MAC is Media Access Control addressit is a physical addressit is given by INTERNIC organizaton

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June 15, 2006 09:27:07

raj

RE: What is MAC address

MAC is a 12 digit hexadecimal number which is a physical address of the network components.

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September 13, 2006 13:20:53

subramanyam Malepati

RE: What is MAC address

What Is a MAC Address?The MAC address is a unique value associated with a network adapter. MAC addresses are also known as hardware addresses or physical addresses. They uniquely identify an adapter on a LAN.MAC addresses are 12-digit hexadecimal numbers (48 bits in length). By convention MAC addresses are usually written in one of the following two formats: MM:MM:MM:SS:SS:SS MM-MM-MM-SS-SS-SSThe first half of a MAC address contains the ID number of the adapter manufacturer. These IDs are regulated by an Internet standards body (see sidebar). The second half of a MAC address represents the serial number assigned to the adapter by the manufacturer. In the example 00:A0:C9:14:C8:29The prefix 00A0C9indicates the manufacturer is Intel Corporation.

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April 21, 2007 10:37:07

lucky_2friends

RE: What is MAC address?

Short for Media Access Control address a hardware address that uniquely identifies each node of a network. In IEEE 802 networks the Data Link Control (DLC) layer of the OSI Reference Model is divided into two sublayers: the Logical Link Control (LLC) layer and the Media Access Control (MAC) layer. The MAC layer interfaces directly with the network medium. Consequently each different type of network medium requires a different MAC layer.

On networks that do not conform to the IEEE 802 standards but do conform to the OSI Reference Model the node address is called the Data Link Control (DLC) address.

See a breakdown of the seven OSI layers in the Quick Reference section of Webopedia.

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