Networking Explained, Second Edition
An in-depth explanation of all things networking.
TABLE OF CONTENTS Networking Explained, Second Edition
Chapter 8: Ethernet, Ethernet, and More Ethernet
Overview
In this chapter, we focus our attention on Ethernet networks. In previous chapters, we informally examined aspects of Ethernet technology to illustrate various network concepts. For example, in our discussion of the data link layer in Chapters 5 and 6, Ethernet was used as an example to demonstrate frame formats, MAC hardware addresses, and network switches. In this chapter the subject of Ethernet is presented in a more formal and comprehensive manner. An outline of the topics and concepts we discuss follows:
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History of Ethernet (Questions 1 3)
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Ethernet vs. IEEE 802.3 (Questions 4 13)
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The Initial IEEE 802.3 Protocol: 10 Mbps Ethernet (Questions 14 17)
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10 Mbps Ethernet Performance Issues: Network Diameter and Collision Domain (Questions 17 28)
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Partitioning, Switched Ethernet, and Virtual LANs (Questions 29 40)
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100 Mbps Ethernet: Fast Ethernet and 100VG-AnyLAN (Questions 41 57)
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1 Gigabit Ethernet (Questions 58 71)
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10 Gigabit Ethernet (Questions 72 77)
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IsoEthernet (Question 78)
History of Ethernet
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What exactly is Ethernet and what is its origin?
Ethernet is a local area network protocol developed jointly by Xerox, Intel, and Digital Equipment Corporation (DEC) at the Xerox Palo Alto Research Center (PARC) in the mid-1970s. It was designed as a technology that would allow for the interconnection of office devices. Although the concept of Ethernet was originally developed at PARC, Ethernet's genesis is with Norman Abramson of the University of Hawaii in the late 1960s to early 1970s. Abramson developed a network called ALOHA, which was used to connect the main campus site in Oahu to seven other...
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