ENVS 1200 Lecture Notes - Lecture 25: Internet Protocol Suite
13 May 2018
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ENVS 1200 Lecture 25 Notes – Ethernet and TCP/IP networking
Introduction
• Despite the complex interactions implied by modern computing, most of the complexity
results from the large number of simple messages that are sent between the various
computers involved in the operations
• Rather than any inherent complexity in the basic process of communication itself
• Indeed, it is possible to reduce the basic ideas of networking to a few simple basic ideas.
• In a sense, the issue is analogous to the way in which complex programs are constructed
out of the simple instructions that make up basic computer program operations.
• No matter how complex the overall communication, the communication ultimately
reduces to a series of idiidual essages, each of hich is a communication
between a source computing device and one or more receiving computing devices.
• Although there are other types of networks and network protocol suites, the
combination of TCP/IP and Ethernet represents the vast majority of network
connectivity and use today.
• A careful introduction to the basic concepts of networking, and introduced TCP/IP and
Ethernet
• We expand the discussion to clarify many areas of importance and interest in the
implementation of TCP/IP and Ethernet networks.
• The goal was to help you to achieve a basic understanding of networking.
• The goal is to add richness and color to the overall picture of how your e-mail and Web
surfing and IMing retrieves your Web pages successfully most of the time and gets your
messages to the right place.
• Particularly on TCP/IP and Ethernet protocols that solve some of the more interesting
and important problems
• Domain name translation, the formats of the packets, address resolution between IP
and physical addresses, and the like
• Any inherent complexity in the basic process of communication itself
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