This will result in the following hexadecimal address: The binary format of the MAC address looks like this: Well, the router will first flip the seventh bit from 0 to 1. Invert the seventh bit of the interface ID.įor example, if the MAC address of a nework card is 00:BB:CC:DD:11:22, the interface ID would be 02BBCCFFFEDD1122.
Insert FFFE in between the two, making the interface ID. Split the MAC address in two halves (6 hex digits each).
Here are the rules that a router uses to create the interface ID:ġ. The interface ID created this way is known as the modified extended unique identifier 64 (EUI-64). Also, the 7th bit in the first byte is flipped to a binary 1. An interface ID is created by inserting the hex number FFFE in the middle of the MAC address of the network card. Media Access Control (MAC address or Layer 2 addresses or physical address or hardware address) addresses are 48 bit (six bytes) binary addresses represented in hexadecimals.The second part of an IPv6 unicast address (used to identify a host’s network interface) is usually a 64-bit interface identifier. The purpose of representing the binary address in hexadecimal format is to make it easier for humans to read and understand. MAC addresses are theoretically permanent numbers, which are burned into the network card.Įvery network adapter has a MAC (Media Access Control) address assigned to it when it is manufactured. MAC (Media Access Control) addresses are hard-coded into network adapter. MAC addresses are typically locally specific. The scope of a MAC address is limited within a Local Area Network (LAN). MAC addresses are binary numbers which are represented in its hexadecimal equivalent. In a MAC address, one hexadecimal digit resembles a group of four contiguous binary bits, called a nibble. The first nibble 1010 from the left most byte in above example represent the first equivalent hexadecimal A in its hexadecimal representation, and the second nibble 1010 from the left most byte in above example represent the second equivalent hexadecimal A in its hexadecimal representation.
HOW TO CONVERT MAC ADDRESS TO 48 BINARY WINDOWS
To view the MAC Address of your network card when you are using Windows Operating System, run command prompt, cmd (Right-click Start > Run > type cmd and click "OK"). CONVERT MAC ADDRESS TO BINARY CALCULATOR WINDOWS Type the command "ipconfig /all" in the prompt and Enter. The first three bytes of the MAC address identifies the vendor who manufactured the product (Example: a NIC Card), and is known as OUI (Organizationally Unique Identifier). OUI (Organizationally Unique Identifier) numbers are assigned by the IEEE to te manufacturer. Next three bytes are Network Interface Controller Specific number. Network Interface Controller specific number are assigned by manufacturer to the NIC.
Refer below image to understand OUI (Organizationally Unique Identifier) part and NIC specific part of MAC addresses. You can search for the OUI listings in following URLs. Refer the following table for easy conversion from binary to decimal and hexadecimal numbers.