Tengo un desconocimiento casi del tema, aunque hace unos años hice un curso sobre Routers... pero es lo que tiene dejar las cosas de lado y no volverlas a tocar durante mucho tiempo. Pero adonde llego yo es, que Ethernet es un tipo de tecnología de red local que define a nivel de cableado. Para más información comprar el libro. Ahora bien el pulpo de la portada es una maravilla!!

Charles Spurgeon's latest book on Ethernet is published by O'Reilly and Associates, and features an octopus on the cover. This O'Reilly definitive guide provides a comprehensive and accurate source of information on the entire Ethernet system in a single volume. Includes 10 Mbps, 100 Mbps, and Gigabit Ethernet, as well as repeaters, switching hubs, full-duplex Ethernet, Auto-Negotiation system, specifications for all media systems, structured cabling systems for twisted-pair cabling, network management, troubleshooting, and more.

Vía Books O’reilly

Ethernet has been the flavor of choice for networking administrators since the early 1980s. Written by one of the foremost experts on Ethernet standards and configuration, Ethernet: The Definitive Guide has all the information you need to set up and maintain a scalable local area network (LAN) using Ethernet. The book includes an introduction to Ethernet and sections on media systems, how to build your Ethernet system, performance analysis, and troubleshooting.

Ethernet is a core networking technology used by every high tech business. While the basic protocols have changed little, new options such as Fast Ethernet and Gigabit Ethernet have increased the complexity of the topic. Ethernet has been the flavor of choice for networking administrators since the early 1980s because of its ease of use and scalability. Written by one of the foremost experts on Ethernet standards and configuration, Charles E. Spurgeon, Ethernet: The Definitive Guide includes everything you need to know to set up and maintain an Ethernet network. Ethernet: The Definitive Guide teaches you everything you need to know about the IEEE 802.3 Ethernet standard and its protocols. The book is logically separated into five parts:

Introduction to Ethernet provides a tour of basic Ethernet theory and operation, including a description of Ethernet frames, operation of the Media Access Control (MAC) protocol, full-duplex mode and auto-negotiation.
Ethernet Media Systems is the heart of the book. This sectionof Ethernet: The Definitive Guide shows you how to build media-specific Ethernet networks, from a basic 10BASE-T Ethernet offering 10 Mbps over twisted-pair cables, to an advanced 1000BASE-X Gigabit Ethernet, providing up to 1 Gbps of data transfer over fiber optic cables.
Building Your Ethernet System teaches you how to build twisted-pair and fiber optic media segments, as well as how to build your Ethernet using repeaters and hubs.
Performance and Troubleshooting is divided into two chapters. The first describes both the performance of a given Ethernet channel, as well as the performance of the entire network system. The second includes a tutorial on troubleshooting techniques and describes the kinds of problems network administrators are likely to encounter.

The last part of the book includes a complete glossary of terms used throughout the book, a resource list, descriptions of thick and thin coax-based Ethernet systems, a guide to AUI equipment installation and configuration, and a listing of troubleshooting numbers. This book is the definitive guide for anyone wanting to build a scalable local area network (LAN) using Ethernet.