How to find MAC address – Command for UNIX/Linux - ifconfig -a ip link list ip address show Note: Colon-Hexadecimal notation is used by Linux OS and Period-separated Hexadecimal notation is used by Cisco Systems. MAC address can be represented using any of the following formats – But this is just a conversion, not mandatory. The rightmost six digits represents Network Interface Controller, which is assigned by manufacturer.Īs discussed above, MAC address is represented by Colon-Hexadecimal notation. Here are some OUI of well known manufacturers : CC:46:D6 - Cisco IEEE Registration Authority Committee assign these MAC prefixes to its registered vendors. First 6-digits (say 00:40:96) of MAC Address identifies the manufacturer, called as OUI ( Organizational Unique Identifier). MAC Address is a 12-digit hexadecimal number (6-Byte binary number), which is mostly represented by Colon-Hexadecimal notation. MAC Address is word wide unique, since millions of network devices exists and we need to uniquely identify each. MAC address is used by Media Access Control (MAC) sublayer of Data-Link Layer. In IEEE 802 standard, Data Link Layer is divided into two sublayers – MAC Address is also known as Physical Address of a network device. MAC Addresses are unique 48-bits hardware number of a computer, which is embedded into network card (known as Network Interface Card) during the time of manufacturing. In this article, we will discuss about addressing in DLL, which is MAC Address. Media Access Control Address is a physical address which works at Data Link Layer. In Computer Network various types of address are introduced each works at different layer. In order to communicate or transfer the data from one computer to another computer we need some address.
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