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.The scenario-based approach is an especially important component of this book: It utilizes representative network topologies as a basis for illustrating almost every protocol attribute and routing policy discussed.Even though you may not see your exact network situation illustrated, the scenario is specific enough to facilitate learning-by-example, and general enough that you can extrapolate how the concepts illustrated apply to your situation.Features and Text ConventionsThis book works hard not to withhold protocol details and design-oriented information, while at the same time recognizing that building general and conceptual understanding necessarily comes first.Two features are included to help emphasize what is practical and design-oriented as underlying concepts are developed:• Pointers to configuration examples—located in the margins next to pertinent text discussions, these references point forward to places in Chapters 10 and 11 where related configuration examples can be found.• Frequently Asked Questions—located at the end of every chapter, these questions anticipate practical and design-oriented questions you may have, for your particular network, after having read the chapter.In addition, this book utilizes several other conventions:• Troubleshooting margin notes—these brief references are placed adjacent to text discussions that are especially relevant to preventing or correcting common routing problems and programming mistakes.• Notes—these set-off passages include elaborations that will further illuminate text passages, but which can be skipped without loss of understanding of core topics.Table of Contents
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