As LANs grow and organizations become dependent on LAN services, high

costs can become associated with poor network performance and reliability.

Most organizations regret cost-cutting on LAN cabling systems and diagnostic

tools after a failure results in a major service interruption. Organizations have

come to realize that it pays to install a robust, high-performance network. They

also realize that they should purchase diagnostic and management tools and

have available trained personnel who are familiar with their operation before a

major failure occurs.

Two network physical layer (cabling) stan

area networks: Ethernet (TYPE II, RAW, IEI

802.5). The purpose of this book is not to

standards is "best." Both work; both have ad]

around for years in the future. Your organizal

selecting one of these or another standard.

After you choose your physical layer sta]

ensuring that it performs well and reliably.

Ethernet and Token RinR Optimization is a thoro

:lards are most common in local

E 802.3) and Token Ring (IEEE

9ersuade you that one of these

~erents; and both are likely to be

ion will have its own reasons for

ldard, you face the challenge ot

?hat s where this book comes in.

ugh, practical guide that explains