MAC stand for Media Access Control is a unique address is an identifier that every network device uses to identify itself on a network. It works on the data link layer of the OSI model.
NIC stand for Network Interface Card
NIC has 1 6 byte hexadecimal number
MAC works on the data link layer of the OSI model
This Addresses don’t changes, they are permanent
Also known as Physical Address and Hardware Address
Unique 48-64 bit address
About MAC Address
You can get detailed information on wikipedia.
Please check on https://en.wikipedia.org/wiki/MAC
Different Notation in MAC address
Hyphen Hexadecimal notation = 00-0b-56-b1-c0-6e
Colon Hexadecimal Notation = 00:0b:56:b1:c0:6e
Period Separated Hexadecimal Notation = 000.b56.b1c.06e
Types of MAC Address
- Unicast
- Multicast
- Broadcast
Unicast Address
One to one means that there is only one sender and receiver is knows as Unicast.
Multicast Address
One to many means that there is one sender and multiple receivers is knows as Multicast.
Broadcast Address
One to all means that there are multiple sender and multiple receivers is knows as Broadcasting.
MAC Sublayer
MAC sublayer is responsible for connection to physical media. At the MAC sublayer of Data link layer, the actual physical address of the device, called the MAC address is added to packet. Such a packet is called a Frame that contains all the addressing information necessary to travel from sources devices to destination device.
Sublayers of Data Link Layer
Data link layer divided in two sublayers as below:
- LLC (Logical Link Control Sublayer)
- MAC (Media Access Control Sublayer)
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