The first section of this directory lists the most common data communications protocols in use today and indicates their function in respect to the OSI model. In particular, it provides information concerning the structure of the protocol (header, PDU, etc.), various errors and parameters. Protocols are listed according to protocol suite. Protocol suites are listed in alphabetical order.

The second section of this directory describes numerous physical layer technologies which are used today in the data communications industry.

You may choose from among the protocol suites listed below. See the Index for an alphabetical listing of all protocols contained within this directory. If you prefer, you can search the directory.

View the Protocol Directory in pdf format.

Click here for information on protocol analysis and testing.

Protocols

Physical Interfaces

Index