Although IPv4 and IPv6 are both responsible for routing and addressing data, the two protocols have a number of differences. As a result, there are two versions of ICMP. ICMPv4 is used with IPv4, and ICMPv6 is used with IPv6.

In the next section, we'll explore ICMPv4 alongside ICMPv6 so that you understand some of the basic roles and functions in reporting network issues.

Let's start with ICMPv4, which is commonly referred to as ICMP.