The Internet Service Provider will be in charge of assigning it. An IP address is also known as a logical address and it can change over time as well as from one network to another.Reason for IP address called a “logical” address, and the MAC address is called a “physical” address : MAC Addresses are used at the Data Link Layer.Ī MAC address of 2c549188c9e3 is represented as 2C:54:91:88:C9:E3 or 2c-54-91-88-c9-e3. MAC Address is a 12 digit hexadecimal numeral which is most typically expressed with a colon or hyphen separating every two digits (an octet), making reading easier. MAC addresses are 48 bits long and these addresses could not be routed between networks.
The full form of MAC address is Media Access Control address. As a result, IPv6 has 16 octets in total.Įxample – 3221:1cd7:74b6:6da7:0000:0000:7349:6472Ī MAC address is a one-of-a-kind identification assigned to a NIC (Network Interface Controller/Card). It is composed of eight fields, each of which contains two octets. IPv6 has a length of 128 bits and is written in hexadecimal. In comparison to IPV4, IPv6 has a larger address space. IPv6 is the next generation of Internet Protocol addresses.
Each number in the octet can range from 0 to 255. It is composed of four numbers separated by a ‘dot’ i.e., periods called an octet (byte). There are 2 different versions of IP as follows. IP addresses are used at the network layer. The Internet Assigned Numbers Authority (IANA), a part of the Internet Corporation for Assigned Names and Numbers (ICANN), generates and assigns them mathematically. IP addresses are not generated at random. The Internet Service Provider (ISP) assigns IP addresses to all devices on its network. It is a unique address that identifies the device on the network. However, in order to send data to that device, it must pass the data across physical communication links, for which a MAC Address/Physical address is utilized.Īn Internet Protocol address is an IP address. If a device A from the first network wishes to send data to a device Y in the second network, it must first determine where Y is located in the second network, which requires learning the IP address/ logical address, because the connection is subject to change and is not permanent due to the nature of the Packet Switched Network (Logical). The first network has three devices: A, B, C and the second network has three devices: X, Y, Z. IP addresses and MAC addresses are essential for data communication. Difference between em and rem units in CSS.
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