RFC 1180 (rfc1180) - Page 2 of 28
TCP/IP tutorial
Alternative Format: Original Text Document
RFC 1180 A TCP/IP Tutorial January 1991 The next section is an overview of TCP/IP, followed by detailed descriptions of individual components. 2. TCP/IP Overview The generic term "TCP/IP" usually means anything and everything related to the specific protocols of TCP and IP. It can include other protocols, applications, and even the network medium. A sample of these protocols are: UDP, ARP, and ICMP. A sample of these applications are: TELNET, FTP, and rcp. A more accurate term is "internet technology". A network that uses internet technology is called an "internet". 2.1 Basic Structure To understand this technology you must first understand the following logical structure: ---------------------------- | network applications | | | |... \ | / .. \ | / ...| | ----- ----- | | |TCP| |UDP| | | ----- ----- | | \ / | | -------- | | | IP | | | ----- -*------ | | |ARP| | | | ----- | | | \ | | | ------ | | |ENET| | | ---@-- | ----------|----------------- | ----------------------o--------- Ethernet Cable Figure 1. Basic TCP/IP Network Node This is the logical structure of the layered protocols inside a computer on an internet. Each computer that can communicate using internet technology has such a logical structure. It is this logical structure that determines the behavior of the computer on the internet. The boxes represent processing of the data as it passes through the computer, and the lines connecting boxes show the path of Socolofsky & Kale
