Who Should Read This Book?

Everybody! You, your friends, your grandmother, her knitting-circle friends, your kids, and their kindergarten classmates—everybody! Actually, we're not so much concerned with who reads this book as with who buys it, but to ask you to buy it and not read it is pretty crass.

In all seriousness, this book is for two kinds of people:

• Network engineers— Those whose job it is to configure, troubleshoot, and manage a network

• Network architects— Those who design networks to carry different types of traffic (voice and data) and support service-level agreements (SLAs)

We have friends who, in their respective jobs, fill both roles. To them, and to you if you do the same, we say, "Great! Buy two copies of this book!"