Address Resolution Protocol (ARP) - RFC 826 - What i learned from RFC.
Why Address Resolution Protocol is required ? Each interface of a router/device has a interface ID (MAC Address which is 48 bit address). Each protocol running in a device uses the same interface. Each protocol uses its own ID or address for its identification. <Protocol, Protocol Address>. A table should be prepared which should contain, the Interface ID <MAC Id> and < Protocol, Protocol's Address>. To solve this issue of creating a table, the ARP protocol was standardized. 10 Mbit Ethernet ? First Ethernet technology after upgrading from Co-axial cable to Ethernet. Speed of 10Mbit Ethernet is 10 Mega bits Per Second. What is 48 bit addresses on the physical cable ? It is the MAC Address. (Medium Access Control) which is unique for each interface in a device. What is the Use of Address Resolution protocol? A protocol is needed to dynamically distribute the correspondences between a <protocol, address> pair a...