4 - ARP - Purpose & Solution

Question 1

Definition of ARP

Answer 1

Address resolution protocol

Question 2

what problem does ARP resolve

Answer 2

L3 (IP) & L2 (MAC add) are separate and both only care about their own layers. ARP helps discover both from devices that are connected

How do we learn MAC add from the from the first time connection?

ARP - This protocol help us learn the destination mac address - so we can send that destination Data

Question 3

why cant the devices get this from the switch - CAM table ?

Answer 3

Switch do not know IP or Names o devices

They only know MAC address connected to their ports