Cisco press CCNP BSCI official exam certification guide 4th edition jul 2007 ISBN 158720147x

CCNP BSCI Official Exam Certification Guide, Fourth Editionby Brent D.. 2893 CCNP BSCI Official Exam Certification Guide, Fourth Edition, is a best of breed Cisco® exam study guide that

CCNP BSCI Official Exam Certification Guide, Fourth Edition

by Brent D Stewart; Clare Gough - CCIE No 2893

Publisher: Cisco Press Pub Date: July 18, 2007 Print ISBN-10: 1-58720-147-X Print ISBN-13: 978-1-58720-147-9 Pages: 672

Review key concepts with foundation summaries

Practice with hundreds of exam questions on the CD-ROMBrent D Stewart

Clare Gough, CCIE® No 2893

CCNP BSCI Official Exam Certification Guide, Fourth Edition, is a

best of breed Cisco® exam study guide that focuses

specifically on the objectives for the BSCI exam Successfullypassing the BSCI 642-901 exam certifies that you have the

knowledge and skills necessary to use advanced IP addressingand routing in implementing scalability for Cisco integrated

services routers (ISR) connected to LANs and WANs

CCNP BSCI Official Exam Certification Guide, Fourth Edition,

follows a logical organization of the CCNP® BSCI exam

on increasing readers' retention and recall of exam topics "Do IKnow This Already?" quizzes open each chapter and allow you

to determine how much time you need to spend on each

section Exam topic lists and Foundation Summary tables makereferencing easy and give you a quick refresher whenever youneed it Scenario-based exercises help you think about examobjectives in real-world situations, thus increasing recall duringexam time Challenging chapter-ending review questions helpyou assess your knowledge and reinforce key concepts

The companion CD-ROM contains a powerful testing engine thatallows you to focus on individual topic areas or take complete,timed exams The assessment engine also tracks your

performance and provides feedback on a module-by-modulebasis, presenting question-by-question remediation to the text.Well regarded for its level of detail, assessment features, andchallenging review questions and exercises, this book helps youmaster the concepts and techniques that will enable you to

succeed on the exam the first time

Brent D Stewart, CCNP and certified Cisco instructor, is a

network administrator at CommScope, where he focuses on thedesign and implementation of an international IP network Brenthas worked in fiber-optic manufacturing R&D and as a networkconsultant

Clare Gough, CCIE® No 2893, is an instructor and a

consultant with more than 18 years of practical experience incomputer networking

The official study guide helps you master all the topics on theCCNP BSCI exam, including

Essential routing principles for designing and managing

scalable networks

EIGRP, OSPF, and IS-IS functions and operation

Multicast routing

Cisco IOS® routing features, including redistribution,route filtering, and DHCP

IPv6 addressing and the transition from IPv4 to IPv6

Companion CD-ROM

The CD-ROM contains an electronic copy of the book and morethan 200 practice questions for the BSCI exam, including

simulation-based questions, all available in study mode, testmode, and flash card format

This volume is part of the Exam Certification Guide Series fromCisco Press® Books in this series provide officially developedexam preparation materials that offer assessment, review, andpractice to help Cisco Career Certification candidates identifyweaknesses, concentrate their study efforts, and enhance theirconfidence as exam day nears

Category: Cisco Certification

Covers: CCNP BSCI exam 642-901

CCNP BSCI Official Exam Certification Guide, Fourth Edition

by Brent D Stewart; Clare Gough - CCIE No 2893

Publisher: Cisco Press

Pub Date: July 18, 2007

Print ISBN-10: 1-58720-147-X Print ISBN-13: 978-1-58720-147-9 Pages: 672

Chapter 10Chapter 11Chapter 12Chapter 13Chapter 14Chapter 15Chapter 16Chapter 17Chapter 18Chapter 19Chapter 20Chapter 21Index

information storage and retrieval system, without written

permission from the publisher, except for the inclusion of briefquotations in a review

Hucaby; ISBN-13: 978-1-58720-142-4, ISBN-10: 1-58720-Warning and Disclaimer

This book is designed to provide information about BSCI

Certification Every effort has been made to make this book as

complete and as accurate as possible, but no warranty or

The information is provided on an "as is" basis The authors,Cisco Press, and Cisco Systems, Inc., shall have neither liabilitynor responsibility to any person or entity with respect to anyloss or damages arising from the information contained in thisbook or from the use of the discs or programs that may

accompany it

The opinions expressed in this book belong to the author andare not necessarily those of Cisco Systems, Inc

Trademark Acknowledgments

All terms mentioned in this book that are known to be

trademarks or service marks have been appropriately

capitalized Cisco Press or Cisco Systems, Inc., cannot attest tothe accuracy of this information Use of a term in this bookshould not be regarded as affecting the validity of any

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The publisher offers excellent discounts on this book when

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technical community

Readers' feedback is a natural continuation of this process Ifyou have any comments regarding how we could improve thequality of this book, or otherwise alter it to better suit yourneeds, you can contact us through email at

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©2007 Cisco Systems, Inc All rights reserved CCVP, the Ciscologo, and the Cisco Square Bridge logo are trademarks of CiscoSystems, Inc.; Changing the Way We Work, Live, Play, and

LightStream, Linksys, MeetingPlace, MGX, Networking Academy,Network Registrar, Packet, PIX, ProConnect, RateMUX,

Dedications

This book is dedicated to Karen Without her love, patience, andencouragement, this book would not have been possible

Brent D Stewart, CCNP, CCSI, is a network administrator at

CommScope, where he focuses on design and implementation

of an international IP network Brent has worked in fiber-opticmanufacturing R&D, as a network consultant, and as a certifiedCisco instructor Brent participated in the development of BSCIwhile with Global Knowledge and developed Internet-basedversions of several CCNP classes Brent received a B.S in

physics from Lenoir-Rhyne College and is currently finishing anM.S in computer science/information security from James

Madison University

Brent lives in Hickory, North Carolina, with his beautiful wife,Karen, and their wonderfully mischievous children, Benjamin,Kaitlyn, Madelyn, and William

Wayne Lewis, Ph.D., is an associate professor at Honolulu

Community College Since 1992, he has served as a math

instructor, as the state school-to-work coordinator, and as thelead instructor for the Cisco Academy Training Center (CATC)

He has authored seven Cisco Press books on network

troubleshooting, multilayer switching, and, most recently,

intermediate routing and basic switching As a consultant forCisco, he coordinated the development of several iterations ofthe curriculum for the CCNP and served as a project managerfor the development of the Securing Cisco LAN Devices coursefor the Critical Infrastructure Assurance Group When he is notmanaging, teaching, writing, consulting, or spending time withhis wife and kids, he enjoys surfing the North Shore of Oahuduring the winter months and the South Shore of Oahu duringthe summer months

Diane Teare, CCNP, CCDP, CCSI, is a professional in the

networking, training, and e-learning fields She has more than

20 years of experience in designing, implementing, and

troubleshooting network hardware and software and has alsobeen involved in teaching, course design, and project

management She has extensive knowledge of network designand routing technologies and is an instructor with one of thelargest authorized Cisco Learning Partners She was also

recently the Director of e-Learning for the same company,

learning offerings in Canada, including Cisco courses Diane waspart of the team that developed the latest version of the BSCIcourse She has a bachelor's degree in applied science in

responsible for planning and supporting all the company's e-electrical engineering (BASc) and a master's degree in appliedscience in management science (MASc) She co-authored the

Cisco Press titles Campus Network Design Fundamentals and three editions of the Building Scalable Cisco Internetworks

Study: Designing for Cisco Internetwork Solutions (DESGN) and

(BSCI) Authorized Self-Study Guide; she also edited CCDA Self-Designing Cisco Networks.

Clare Gough, CCIE No 2893, has worked as a network

engineer for 17 years, during which time she has managed anddesigned large-scale networks In 1997 she was one of the firstwomen to gain her CCIE In addition to being a network designconsultant, she is an acknowledged authority on the

A book of this nature requires a constellation of intelligent andhardworking people to bring it together, and I appreciate all thehelp I've received

Jay Swan and Clare Gough were tremendously helpful technicaleditors They offered corrections and suggestions that have

improved this book enormously

I'd especially like to thank the editors at Cisco Press who haveguided this book to completion: Mary Beth Ray and Dayna Isley

Icons Used in This Book

The conventions used to present command syntax in this bookare the same conventions used in the IOS Command Reference.The Command Reference describes these conventions as

follows:

Boldface indicates commands and keywords that are

entered literally as shown In actual configuration examplesand output (not general command syntax), boldface

Square brackets [ ] indicate optional elements

Braces { } indicate a required choice

Braces within brackets [{ }] indicate a required choice

within an optional element

CCNP BSCI Official Exam Certification Guide is an excellent self-study resource for the CCNP BSCI exam Passing the exam

validates the knowledge, skills, and understanding needed touse advanced IP addressing and routing in implementing

scalability for Cisco ISR routers connected to LANs and WANs It

is one of several exams required to attain the CCNP

certification

Gaining certification in Cisco technology is key to the continuingeducational development of today's networking professional.Through certification programs, Cisco validates the skills andexpertise required to effectively manage the modern enterprisenetwork

Cisco Press exam certification guides and preparation materialsoffer exceptional—and flexible—access to the knowledge andinformation required to stay current in your field of expertise, or

to gain new skills Whether used as a supplement to more

traditional training or as a primary source of learning, thesematerials offer users the information and knowledge validationrequired to gain new understanding and proficiencies

Developed in conjunction with the Cisco certifications and

training team, Cisco Press books are the only self-study booksauthorized by Cisco; these books offer students a series of

exam practice tools and resource materials to help ensure thatlearners fully grasp the concepts and information presented.Additional authorized Cisco instructor-led courses, e-learning,labs, and simulations are available exclusively from Cisco

February, 2007

Cisco's professional certifications—CCNP (Routing and

Switching), CCDP (Design), CCIP (Service Provider), CCSP

(Network Security), and CCVP (Voice)—are very popular andmeaningful measurements of progress in your career

complex IP networks The BSCI exam is not an easy exam

Cisco wants to ensure that everyone who passes the test

thoroughly understands the subject matter both at a conceptuallevel and at an implementation level

Although this is a difficult exam, networking professionals canexpect to pass if they meet the prerequisites and spend theproper amount of time on training, on-the-job experience, andstudy As with most certification exams, you might not pass thefirst time Taking the exam a second time, however, is likely to

be easier because you will have a better idea of what to expect.There are many questions on the BSCI exam that you mightalready know through your professional background and

experiences, if you meet the prerequisites This book offers youthe opportunity to solidify that knowledge as you make yourfinal preparations to take the BSCI exam

Exam Overview

The BSCI exam is a computer-based exam You can take theexam at any Prometric or Pearson VUE testing center See theCisco Training and Events page

topics A happy side effect is that you will also be prepared toapply these concepts on the job

The first step in efficient study is to recognize your own

strengths and weaknesses and to delegate study time

accordingly The methodology used in this book helps you

assess your current understanding of the topics and then reviewthose topics, quizzing yourself at the end to ensure you've

retained what you've learned By "dipping into" the sectionsthat you need, you can quickly access and review the

information you need

Who Should Read This Book?

This book is intended for anyone interested in passing the CiscoBSCI exam or interested in learning the material that is

included on that exam BSCI is attractive both as a step towardcertification and as a way to prepare for important job roles.This book is intended as a final-stage preparation tool Beforereading this book and taking the exam, you should have eithertaken the Building Scalable Cisco Internetworks (BSCI) v3.0

CCNP course; read through Building Scalable Cisco

Internetworks (BSCI), Third Edition (Authorized Self-Study

Guide); have a couple of years of LAN switching experience; orhave some combination of these prerequisites

length subnetting

need more work with Each chapter covers a subset of topics onthe BSCI exam This book is divided into five parts

Part I: Introduction to Scalable Networks

Chapter 1, "Network Design," describes how scalability andmultiplexing simplify network design; compares the

enterprise composite model to the older hierarchical model;describes Services-Oriented Network Architecture (SONA)and Intelligent Information Network (IIN); and introducesthe routing protocols covered in detail in later chapters

Chapter 2, "IP Address Planning and Summarization," acts

as a bridge between CCNA and CCNP topics by reviewing IPaddressing fundamentals and explaining summarization

Chapter 3, "EIGRP Principles," describes the key featuresand advantages of EIGRP; explains EIGRP neighbor,

topology, and routing tables; and describes factors that

impact EIGRP network scalability

Chapter 4, "Scalable EIGRP," describes EIGRP configuration,authentication, and troubleshooting

Part III: OSPF

Chapter 5, "Understanding Simple Single Area OSPF,"

reviews OSPF fundamentals and describes configuring andtroubleshooting OSPF in a single area

Chapter 6, "OSPF Network Topologies," describes OSPF

network topology options and how to configure differenttypes of OSPF networks

Chapter 7, "Using OSPF Across Multiple Areas," describesthe features and operation of an OSPF multi-area networkand explains how to configure, verify, and troubleshoot

multi-area OSPF

Chapter 8, "OSPF Advanced Topics," describes how OSPFdesign uses stub, totally stubby, and not-so-stubby areas tooptimize resource utilization, and explains OSPF

authentication

Part IV: IS-IS

Chapter 9, "Fundamentals of the Integrated IS-IS Protocol,"introduces Integrated IS-IS, including the ISO addressingstructure, adjacencies, and design considerations

Chapter 10, "Using IS-IS with IP," covers basic IS-IS

configuration, optional IS-IS commands, and commands forverifying and troubleshooting the IS-IS operation

Chapter 11, "Implementing Redistribution and ControllingRouting Updates," introduces redistribution fundamentalsand describes controlling routing updates, important

configuration commands, and when to use traceroute and ping.

Chapter 12, "Controlling Redistribution with Route Maps,"describes configuring and monitoring route maps

Chapter 13, "Dynamic Host Control Protocol," describes theprocess of allocating IP addresses with DHCP; defines theserver, relay, and client used by DHCP; and outlines theprocess for troubleshooting DHCP

Chapter 16, "Controlling BGP Route Selection," describesBGP attributes, path selection, and commands that you canuse to display output related to BGP attributes

Part VII: Multicasting

Chapter 17, "What Is Multicasting?," explains styles of IPaddresses, the process to convert a multicast IP address to

a multicast MAC address, and some of the problems thatlimit the use of multicasting

Chapter 18, "IGMP and Multicast Routing Protocols,"

Chapter 19, "Configuring Multicast," describes multicastrouting protocols and the commands necessary to

implement multicasting

Part VIII: IPv6

Chapter 20, "Introduction to IPv6 and IPv6 Addressing,"describes the need for IPv6, the IPv6 packet header, IPv6addressing and address assignments, and IPv6 mobility

Chapter 21, "IPv6 Routing Protocols, Configuration, andTransitioning from IPv4," describes the various routing

protocols that support IPv6, provides the commands to

configure and verify IPv6 and OSPFv3, and discusses thetransition from IPv4 to IPv6

of your knowledge

A more lengthy "Q&A" section appears near the end of eachchapter The Q&A section presents many open-ended reviewquestions to test your retention and comprehension of thesubject matter presented in the chapter

Appendix A, "Answers to Chapter 'Do I Know This Already?'Quizzes and Q&A Sections," list the answers to both

quizzes

with a Scenarios section that provides an in-depth

examination of a network implementation Instead of posing

a simple question asking for a single fact, the scenarios letyou design, configure, and troubleshoot networks (at least

on paper) without the clues inherent in a multiple-choicequiz format

CD-based practice exam— The companion CD-ROM

contains two separate test banks—one composed of thequestions from the book and an entirely new test bank ofquestions to reinforce your understanding of the book's

concepts In addition to the multiple-choice questions, youencounter some configuration simulation questions for

which you actually perform configurations This is the besttool for helping you prepare for the actual test-taking

process

BSCI Exam Topics

The exact questions that appear on the BSCI exam are a veryclosely guarded secret Only those who write the questions forCisco and who have access to the entire question database trulyknow what is on the exam Cisco reveals only general detailsabout the contents and objectives of the BSCI exam BecauseCisco maintains the right to change this information withoutnotice, it is important that you check the web site for the mostcurrent information You can find a list of Cisco exams and thegeneral outline that accompanies each exam at

http://www.cisco.com/go/certification

Table I-1 Cisco Exam Topics

Book That Covers the Exam Topic

concepts described in Part I is essential for passing the exam.

For More Information

Cisco might make changes that affect the CCNP certificationfrom time to time You should always check Cisco.com for thelatest details Also, you can look to this book's website

http://www.ciscopress.com/title/158720147x for informationpertinent to how you might use this book differently in light ofCisco's future changes.

Part I: Introduction to Scalable Networks

Comparing Routing Protocols —Compares the different

features of RIP (versions 1 and 2), OSPF, EIGRP, IS-IS, andBGP

This first chapter includes a variety of concepts, some of whichare expanded on later in the book, some of which are simplyhere to expose you to a set of ideas Regardless of the

motivation, all the topics covered in this chapter are on the

Building Scalable Cisco Internetworks (BSCI) exam and should

be understood

Network design is an important topic and is covered here at thedepth necessary to define terms and standards about

implementation These terms form a foundation for the rest ofthe book

Services-Oriented Network Architecture (SONA) and IntelligentInformation Network (IIN) are also broadly described in thischapter They are only covered to the extent you might expect

to see them on the exam.

This is a book about routing protocols, and a comparison andtheoretical discussion of the different routing protocols is foundhere Again, this section is important because it helps describe

chapters to come

"Do I Know This Already?" Quiz

The purpose of the "Do I Know This Already?" quiz is to helpyou decide which parts of this chapter to use If you alreadyintend to read the entire chapter, you do not necessarily need toanswer these questions

The 12-question quiz, derived from the major sections in the

"Foundation Topics" portion of the chapter, helps you determinehow to spend your limited study time

Table 1-1 outlines the major topics discussed in this chapter andthe corresponding quiz questions

you should mark the question wrong for purposes of theself-assessment Giving yourself credit for an answer

you correctly guessed skews your results and might

provide you with a false sense of security

1.How many links are required to form a full mesh of eightdevices?

c Only large enterprises can use this design.

d The design uses EIGRP and BGP.

3.Which of the following describe the hierarchical networkmodel?

a Switching, Routing, Provider

b Access, Distribution, Core

c Physical, Data Link, Network

d Red, Blue, Black

4.In the standard hierarchical design, what elements arefound within a switch block?

a Two core switches and some number of

distribution switches

b Two distribution Layer-2 switches and some number of Layer-1 access switches

c Two distribution Layer-3 switches and some number of Layer-2 access switches

a RIP

b OSPF