Getting a handle on the invisible part of your network—the protocols that are in use—can be of enormous value in helping you detect problems.

Other Protocols There are other incidental protocols that you'll run into from time to time. The three most common of these would be Remote Procedure Call (RPC), used by Pre-E2K Exchange boxes, X.400, ...

TCP/IP also is a layered protocol but does not use all of the OSI layers, though the layers are equivalent in operation and function (Fig. 2). The network access layer is equivalent to OSI layers ...

IBM misplayed its hand with SNA and OSI never had a chance against TCP/IP. The long, slow and at times, colorful battle between TCP/IP backers and SNA stalwarts was one of the more acrimonious ...

This paper explains the 2 popular reference models: OSI reference model and TCP/IP model, by comparing the functionality of each layer in both models.

What does Ethernet and TCP/IP actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

To make matters worse, the Internet’s evolution, based on TCP/IP, never strictly followed the old OSI model at all.

From the birth of ARPANET in 1969 to the establishment of the TCP/IP protocol that laid the foundation for ... Dilemma The ...