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* Do you know what ARP is?


Suggested article: ARP (Address Resolution Protocol) – Why is it important?

The short acronym ARP stands for Address Resolution Protocol, and it represents a network layer protocol that maps a constantly changing Internet Protocol (IP) address to a fixed physical machine address - a Media Access Control (MAC) address, in a local-area network (LAN).

ARP was first described in 1982 by RFC 826 and instantly became a vital element of network communications. Through the years, the protocol has evolved in order to support the latest technologies and protocols.

The ARP (Address Resolution Protocol) is highly important for the proper operation of IP networks. That is because it facilitates communication between devices on a local network by mapping IP addresses to physical (MAC) addresses. On the other hand, mapping is needed for data transmission at the Data Link Layer, where communication occurs using MAC addresses instead of IP addresses.

Without ARP, devices will be incapable of identifying each other on a particular network, and communication cannot be achieved. Besides, ARP helps in detecting duplicate IP addresses on a network, which can cause communication issues if not resolved.

If you are curious and want to know more about this topic, we suggest you read the following page with more details about ARP!