It is mainly useful for discussing, describing, and understanding individual network functions ... of the OSI model somewhat correspond with the four layers that make up the TCP/IP protocol.

A tutorial on the Open Systems Interconnection (OSI) networking reference model ... known as TCP/IP. TCP and UDP port numbers work at Layer 4, while IP addresses work at Layer 3, the Network ...

Common functions at this layer are ... IP protocol in TCP/IP (see TCP/IP). IPX, SNA and AppleTalk are examples of earlier routable protocols, which means that they included a network and station ...

The purpose of the network layer is to help route messages between different local ... able to dump the whole buffer in case the final datagram does not arrive. Many TCP/IP based applications do not ...