ICMP helps route out problems with connectivity & routing. It is a transport layer protocol used to configure and diagnose internet networks. The main difference between ICMP and other protocols is that it doesn't carry any true user data & there's no application layer above it.
ICMP plays a crucial role in diagnosing and configuring internet networks by identifying problems with connectivity and routing. Operating at the network layer, ICMP differs from other transport layer protocols, such as TCP and UDP, as it doesn't carry true user data, and there's no application layer above it.