本书详细介绍了CCNP：Routing 学习中的重点难点，通过循序渐进的讲解使学习者能够掌握这些重难点，从而深刻领悟其中的含义。

Introduction

Assessment Test

Chapter 1 Scaling Large Internetworks

Chapter 2 Routing Principles

Chapter 3 IP Addressing

Chapter 4 OSPF Areas

Chapter 5 Interconnecting OSPF Areas

Chapter 6 IGRP and EIGRP

Chapter 7 BGP's Basic Components

Chapter 8 Configuring Basic BGP

Chapter 9 BGP Scalability and Advanced Features

Chapter 10 Route Optimization

Appendix A Practice Exam

Appendix B Commands in This Study Guide

Appendix C Route Summarization

Glossary

Once the LSA updates have been flooded throughout the network, each recipient must acknowledge that the flooded update was received.It is also important that the recipient validate the LSA update.