The medley of “names” of Network Models and their Layers

At the beginning itself lets make it clear that the information in this article is obtained from various democratic Web Sources, so this might intervene to the literature that we generally find in our Network Textbooks. Towards the end, I have also written down the links from where I have collected this information.

I had a phone call in the evening from a friend (‘Computer Networks’ Quiz is in the next week) who was asking me about the Network Models and the difference between the ‘Internet Model’, OSI Model and the TCP/IP Protocol Suite. Now, as far as I knew, the TCP/IP Protocol Suite and the Internet Model are one and the same things, only the name ‘TCP/IP Model’ is the alias of ‘Internet Model’ or might be vice versa. But, then thought better clear the confusion.

Wikipedia says that “The TCP/IP Model is sometimes called the Internet Model .”

IETF (Internet Engineering Task Force) are responsible for maintaining the model and other related models.

The above article really gives a clear explanation of the layered stack of the Internet Model. It has also mentioned the names of the textbooks, and gives a nice tabular description telling that ,

These textbooks are secondary sources that may contravene the intent of RFC 1122 and other IETF primary sources such as RFC 3439 .

Different authors have interpreted the RFCs differently regarding the question whether the Link Layer (and the TCP/IP model) covers Physical Layer issues, or if a hardware layer is assumed below the Link Layer. Some authors have tried to use other names for the Link Layer, such as network interface layer, in view to avoid confusion with the Data Link Layer of the seven layer OSI Model. Others have attempted to map the Internet Protocol model onto the OSI Model.”

Below this the RFC1122.txt file entitled :

 Requirements for Internet Hosts -- Communication Layers

that has the description of Layers


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