tailieunhanh - Book: CCIE Fundamentals Network Design , Case Studies

Internetworking—the communication between two or more networks—encompasses every aspect of connecting computers together. Internetworks have grown to support vastly disparate end-system communication requirements. An internetwork requires many protocols and features to permit scalability and manageability without constant manual intervention. Large internetworks can consist of the following three distinct components: | About This Manual Document Objectives This publication provides internetworking design and implementation information and helps you identify and implement practical internetworking strategies that are both flexible and scalable. This publication was developed to assist professionals preparing for Cisco Certified Internetwork Expert CCIE candidacy though it is a valuable resource for all internetworking professionals. It is designed for use in conjunction with other Cisco manuals or as a standalone reference. You may find it helpful to refer to the Cisco CCIE Fundamentals Case Studies which provides case studies and examples of the network design strategies described in this book. Audience This publication is intended to support the network administrator who designs and implements router- or switched-based internetworks. Readers will better understand the material in this publication if they are familiar with networking terminology. The Cisco Internetworking Terms and Acronyms publication is a useful reference for those with minimal knowledge of networking terms. Document Organization This manual contains three parts which are described below Part I Overview provides an introduction to the type of internetworking design topics that will be discussed in this publication. Part II Design Concepts provides detailed information about each of the design strategies and technologies contained in this publication. Part III Appedixes contains reference material. Document Conventions In this publication the following conventions are used Commands and keywords are in boldface. New important terms are italicized when accompanied by a definition or discussion of the term. Protocol names are italicized at their first use in each chapter. About This Manual xix Document Conventions Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual. xx Cisco CCIE Fundamentals Network Design CHAPTER 1 Introduction Internetworking the

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