Cisco press CCNP BSCI official exam certification guide 4th edition

CCNP BSCI Official Exam Certification Guide, Fourth Edition Table of Contents Copyright Introduction to Scalable Networks Network Design “Do I Know This Already?” Quiz Foundation Topics Foundation Summary 23 Q&A 24 IP Address Planning and Summarization 26 “Do I Know This Already?” Quiz 26 Foundation Topics 30 Foundation Summary 40 Q&A 42 EIGRP 43 EIGRP Principles 43 “Do I Know This Already?” Quiz 44 Foundation Topics 48 Foundation Summary 67 Q&A 69 Scalable EIGRP 70 “Do I Know This Already?” Quiz 70 Foundation Topics 73 Foundation Summary 92 Q&A 93 Scenarios 94 Scenario Answers 98 OSPF 100 Understanding Simple Single Area OSPF 100 “Do I Know This Already?” Quiz 101 Foundation Topics 105 Foundation Summary 130 Q&A 132 Scenarios 133 Scenario Answers 134 OSPF Network Topologies 135 “Do I Know This Already?” Quiz 136 Foundation Topics 140 Foundation Summary 148 Q&A 149 Using OSPF Across Multiple Areas 150 “Do I Know This Already?” Quiz 151 Foundation Topics 158 Foundation Summary 189 Q&A 191 Scenarios 193 Scenario Answers 199 OSPF Advanced Topics 204 “Do I Know This Already?” Quiz 205 Foundation Topics 208 Foundation Summary 217 Q&A 218 IS-IS 219 Fundamentals of the Integrated IS-IS Protocol 219 “Do I Know This Already?” Quiz 220 Foundation Topics 225 Foundation Summary 243 Q&A 246 CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Configuring Integrated IS-IS 248 “Do I Know This Already?” Quiz 249 Foundation Topics 252 Foundation Summary 273 Q&A 274 Scenarios 275 Scenario Answers 279 Cisco IOS Routing Features 284 Implementing Redistribution and Controlling Routing Updates 284 “Do I Know This Already?” Quiz 285 Foundation Topics 289 Foundation Summary 319 Q&A 320 Scenario 322 Scenario Answers 323 Controlling Redistribution with Route Maps 326 “Do I Know This Already?” Quiz 327 Foundation Topics 331 Foundation Summary 337 Q&A 338 Dynamic Host Control Protocol 339 “Do I Know This Already?” Quiz 339 Foundation Topics 343 Foundation Summary 347 Q&A 348 BGP 349 BGP Concepts 349 “Do I Know This Already?” Quiz 350 Foundation Topics 353 Foundation Summary 361 Q&A 361 BGP Neighbors 362 “Do I Know This Already?” Quiz 363 Foundation Topics 366 Foundation Summary 375 Q&A 376 Scenarios 377 Scenario Answers 382 Controlling BGP Route Selection 385 “Do I Know This Already?” Quiz 386 Foundation Topics 390 Foundation Summary 398 Q&A 399 Scenarios 400 Scenario Answers 401 Multicasting 402 What Is Multicasting? 402 “Do I Know This Already?” Quiz 403 Foundation Topics 406 Foundation Summary 414 Q&A 415 IGMP 416 “Do I Know This Already?” Quiz 416 Foundation Topics 419 Foundation Summary 426 Q&A 428 Configuring Multicast 429 “Do I Know This Already?” Quiz 429 Foundation Topics 433 CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Foundation Summary 444 Q&A 446 IPv6 447 Introduction to IPv6 and IPv6 Addressing 447 “Do I Know This Already?” Quiz 448 Foundation Topics 451 Foundation Summary 465 Q&A 467 Scenarios 468 IPv6 Routing Protocols, Configuration, and Transitioning from IPv4 471 “Do I Know This Already?” Quiz 472 Foundation Topics 474 Foundation Summary 492 Q&A 495 Scenarios 496 Answers to Chapter “Do I Know This Already?” Quizzes and Q&A Sections 498 Chapter 498 Chapter 501 Chapter 503 Chapter 506 Chapter 510 Chapter 512 Chapter 514 Chapter 522 Chapter 523 Chapter 10 530 Chapter 11 533 Chapter 12 536 Chapter 13 537 Chapter 14 539 Chapter 15 541 Chapter 16 543 Chapter 17 545 Chapter 18 546 Chapter 19 548 Chapter 20 550 Chapter 21 555 CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents Copyright Part I: Introduction to Scalable Networks Copyright Safari Books Online #528029 Network Design This chapter covers the following topics: Building Scalable Networks— Describes how scalability and multiplexing simplify network design Enterprise Architecture— Describes the older hierarchical model and the newer enterprise composite model SONA and IIN— Describes the three phases of the Intelligent Information Network (IIN) and how Services-Oriented Network Architecture (SONA) applies the IIN ideas to enterprise networks Comparing Routing Protocols— Compares the different features of RIP (versions and 2), OSPF, EIGRP, IS-IS, and BGP This first chapter includes a variety of concepts, some of which are expanded on later in the book, some of which are simply here 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 the depth necessary to define terms and standards about implementation These terms form a foundation for the rest of the book CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents Services-Oriented Network Architecture (SONA) and Intelligent Information Network (IIN) are also broadly described in this chapter 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 and theoretical discussion of the different routing protocols is found here Again, this section is important because it helps describe similarities and unique features and sets the stage for the chapters to come "Do I Know This Already?" Quiz The purpose of the "Do I Know This Already?" quiz is to help you decide which parts of this chapter to use If you already intend to read the entire chapter, you not necessarily need to answer these questions The 12-question quiz, derived from the major sections in the "Foundation Topics" portion of the chapter, helps you determine how to spend your limited study time Table 1-1 outlines the major topics discussed in this chapter and the corresponding quiz questions Table 1-1 "Do I Know This Already?" Foundation Topics Section-to-Question Mapping Foundation Topics Section Questions Covered in This Section Score Building Scalable Networks 1–2 Enterprise Architecture 3–5 SONA and IIN 6–8 Comparing Routing Protocols 9–12 Total Score Caution The goal of self-assessment is to gauge your mastery of the topics in this chapter If you not know the answer to a question or are only partially sure of the answer, you should mark the question wrong for purposes of the self-assessment Giving yourself credit for an answer you correctly guessed skews your results and might provide you with a false sense of security CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents How many links are required to form a full mesh of eight devices? 28 80 Not possible What does a "scalable" design indicate? The design can be "unfolded" to fit various sizes The design grows without causing the endpoint costs to grow Only large enterprises can use this design The design uses EIGRP and BGP Which of the following describe the hierarchical network model? Switching, Routing, Provider Access, Distribution, Core Physical, Data Link, Network Red, Blue, Black In the standard hierarchical design, what elements are found within a switch block? Two core switches and some number of distribution switches Two distribution Layer-2 switches and some number of Layer-1 access switches Two distribution Layer-3 switches and some number of Layer-2 access switches One access switch per department What are the key differences between traditional hierarchical design and the enterprise composite model? Hierarchical design has three layers, the Enterprise Composite Model has five Servers and WAN connections are defined The hierarchical design model is Cisco-specific The enterprise composite model is superseded by AON CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents What is the goal of the SONA network infrastructure layer? Provide a hierarchical and converged network Allow for integration of Service and Network Support dynamic resource allocation Provide for accounting and billing services Which SONA layer corresponds to IIN phase two? Network infrastructure Application Session Interactive services What is the goal of IIN phase three? To create service-aware networks To converge voice and data networks To provide complete redundancy To allow for pervasive network management Which of the following routing protocols is proprietary? RIP OSPF EIGRP BGP 10 Which of the following routing protocols is meant to work between autonomous systems? RIP OSPF EIGRP BGP CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents 11 Which of the following routing protocols converge much more quickly than the others? RIP IGRP OSPF EIGRP 12 Which of the following routing protocols are classless? RIP OSPF EIGRP BGP The answers to the "Do I Know This Already?" quiz are found in Appendix A, "Answers to Chapter 'Do I Know This Already?' Quizzes and Q&A Sections." Compare your score with the following suggestions to determine how to proceed: or less overall score— Read the entire chapter This includes the "Foundation Topics," "Foundation Summary," and "Q&A" sections • or 10 overall score— Begin with the "Foundation Summary" section and then go to the "Q&A" section at the end of the chapter If you have trouble answering the Q&A questions, read the appropriate sections in "Foundation Topics." • 11 or 12 overall score— If you want more review on these topics, skip to the "Foundation Summary" section and then go to the "Q&A" section at the end of the chapter Otherwise, move to the next chapter • Foundation Topics Building Scalable Networks Because this book has not yet discussed large data networks, this chapter uses the phone system as an easily understandable example of network design Originally, folks needed to run wires to every home they might want to call Phone companies provided a more efficient way to form connections by using one line from a home to a central point to switch traffic to arbitrary locations Another type of consolidation came when the T1 carrier was introduced Before T1 a business needing 20 CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page Return to Table of Contents phone lines would have needed 20 pairs of copper run out from the telephone central office (CO) A T1 uses pairs and supports 24 concurrent conversations Although this example might seem far afield, it points out two techniques that are used to simplify networks: scalability and multiplexing Scalability This book is about building scalable Cisco internetworks, but what does "scalable" mean? The definition of scalability affects every subject in this book Therefore, it is important to begin with an idea of what a "scalable" network looks like Imagine that to use the phone, folks in a town would need to run a telephone line from every home to every other house This is called a full-mesh design If there are n homes in the town, then the total number of lines required is lines = n(n - 1)/2 Table 1-2 relates town size to the number of lines required to support the town Table 1-2 Links in a Full-Mesh Network Homes Lines Required 10 45 100 4,950 1000 499,500 Figure 1-1 illustrates this same point with a town of five homes Notice that for five homes, 10 lines are required: 5(4)/2=10 CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Page 544 Return to Table of Contents Q&A BGP attributes include weight, local preference, AS-path, Origin, MED, Community, and Cluster ID The Cisco-proprietary weight attribute selects the exit when there are multiple paths to the same destination The higher the weight value, the better the path Weight is local to the router and the attribute is not propagated to other routers Weight values range from zero to 65,535 The default weight is zero, unless this router sources the route (in which case the weight defaults to 32,768) Local preference is used inside an AS to select outbound paths It has a range from to 4,294,967,295 and higher values are preferred in selecting routes The default value is 100 The AS-Path attribute is a list of AS that the route has passed through (the shortest path is preferred) Origin describes how the route was learned It can be i (native to BGP), e (EGP), or ? (redistributed) Multi-exit discriminator (MED) is advertised to external neighbors to try to influence path selection into an AS MED is an optional, nontransitive attribute and lower MED is preferred The default MED is zero Router(config-router)#neighbor {ip-address peer-group-name} weight weight Router(config-router)#bgp default local-preference value 10 router bgp AS neighbor ip-address route-map question9 out access-list permit 192.168.25.0 0.0.0.255 route-map question9 permit 10 match ip address set metric 90 route-map question9 permit 20 Order Preference 0.Synchronized TRUE 1.Weight Highest 2.Local Preference Highest Description Use only routes that meet the synchronization requirement Administrative override Used internally to pick path out of AS CCNP BSCI Official Exam Certification Guide, Fourth Edition CCNP BSCI Official Exam Certification Guide, Fourth Edition By Brent Stewart ISBN: Prepared for Alan Chua, Safari ID: alan_chua75@hotmail.com 158720147X Publisher: Cisco Press Print Publication Date: 2007/07/17 User number: 528029 Copyright 2007, Safari Books Online, LLC This PDF is exclusively for your use in accordance with the Safari Terms of Service No part of it may be reproduced or transmitted in any form by any means without the prior written permission for reprints and excerpts from the publisher Redistribution or other use that violates the fair use priviledge under U.S copyright laws (see 17 USC107) or that otherwise violates the Safari Terms of Service is strictly prohibited CCNP BSCI Official Exam Certification Guide, Fourth Edition Order 3.Self originated 4.AS-Path 5.Origin 6.MED 7.External 8.IGP cost 9.EBGP Peering 10.RID Page 545 Return to Table of Contents Preference Description TRUE Used to prefer paths originated on this router Shortest Minimize AS-hops i