|Description: TCP/IP is based on a four-layer reference model. All protocols that belong to the TCP/IP protocol suite are located in the top three layers of this model.
Another feature of TCP/IP is testing of connections.
Usually, when connecting Windows 95 systems, NetBEUI is used as network protocol, because the Microsoft "win95-server" can be most easily setup with NetBEUI protocol (you can also use TCP/IP or IPX/SPX, but that is a little more complicated). When you think that everything is setup properly, but you CANNOT get any connection, you need to establish first what went wrong in the complete setup.
Application: Defines TCP/IP application protocols and how host programs interface with transport layer services to use the network.
Transport: Provides communication session management between host computers. Defines the level of service and status of the connection used when transporting data.
Internet: Packages data into IP datagrams, which contain source and destination address information that is used to forward the datagrams between hosts and across networks.
Network Interface: Specifies details of how data is physically sent through the network, including how bits are electrically signaled by hardware devices that interface directly with a network medium, such as coaxial cable, optical fiber, or twisted-pair copper wire.
You also need to decide whether you have a Hardware or Software problem. For that, the TCP/IP protocol supplied with Windows 95/98/ME/NT4/2000 offers a small,
but powerful tool called : 'ping'. TCP/IP PING can also be used to test WAN connections.
Now the question arises: What is ping actually doing? Remember the old war movies with submarines, where they are searching for each other sending out a search-signal, which sounds like 'ping' and where they get back an echo from another submarine? That is EXACTLY, what the 'ping' utility does in searching for other computers on the network!