It is important to distinguish between the Internet Protocol suite and the actual Internet Protocol
that is used in the Network layer of the OSI model.
The IP suite consists of several discrete protocols that are implemented at different levels of
the OSI model.
The Internet Protocol (IP) is a Network layer protocol of the IP suite. It is used to allow
routing among internetworks and heterogeneous systems. IP is a connectionless protocol,
even though it can provide error reporting, and it performs the segmentation and reassembly
of PDUs.