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CCNP ROUTE 642-902 Official Certification Guide

by: Wendell Odom

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Publisher: CISCO PRESS,09.02.10

Category: CCNP 2012 Level:

ISBN: 1587202530
ISBN13: 9781587202537

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Master the CCNP® ROUTE 642-902 exam with this official study guide


  * Assess your knowledge with chapter-opening quizzes


  * Review key concepts with Exam Preparation Tasks


  * Practice with realistic exam questions on the CD-ROM

CCNP ROUTE 642-902 Official Certification Guide is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the CCNP® ROUTE exam. Senior instructor and best-selling author Wendell Odom shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

CCNP ROUTE 642-902 Official Certification Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. "Do I Know This Already?" quizzes open each chapter and allow you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks sections help drill you on key concepts you must know thoroughly.

The companion CD-ROM contains a powerful testing engine that allows 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-module basis, laying out a complete study plan for review.

Well-regarded for its level of detail, assessment features, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that will enable you to succeed on the exam the first time.

CCNP ROUTE 642-902 Official Certification Guide is part of a recommended learning path from Cisco that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining

Wendell Odom, CCIE® No. 1624, is a 28-year veteran of the networking industry. He currently works as an independent author of Cisco certification resources and occasional instructor of Cisco authorized training for Skyline ATS. He has worked as a network engineer, consultant, systems engineer, instructor, and course developer. He is the author of several best-selling Cisco certification titles. He maintains lists of current titles, links to Wendell's blogs, and other certification resources at www.TheCertZone.com.

This official study guide helps you master all the topics on the CCNP ROUTE exam, including:


  * Network design, implementation, and verification plans


  * EIGRP


  * OSPF


  * IGP Redistribution


  * Policy-based routing and IP service-level agreement (IP SLA)


  * BGP


  * IPv6


  * IPv4 and IPv6 coexistence


  * Routing over branch Internet connections

This volume is part of the Official Certification Guide Series from Cisco Press. Books in this series provide officially developed exam preparation materials that offer assessment, review, and practice to help Cisco Career Certification candidates identify weaknesses, concentrate their study efforts, and enhance their confidence as exam day nears.

Table of Contents


  Foreword xxiv


  Introduction xxv

Part I Perspectives on Network Planning

Chapter 1 Planning Tasks for the CCNP Exams 3


  Perspectives on CCNP Exam Topics Related to Planning 3


          CCNP Route Exam Topics That Do Not Require the CLI 4


          Impressions on the Planning Exam Topics 5


  Relating the Exam Topics to a Typical Network Engineer's Job 6


          A Fictitious Company and Networking Staff 6


          The Design Step 7


          Implementation Planning Step 7


          Verification Planning Step 9


          Documenting the Results of the Implementation 10


          Summary of the Role of Network Engineer 10


  How to Prepare for the Planning Topics on the Exams 10


          Planning Preparation: Design Review Table 12


          Planning Preparation: Implementation Plan Peer Review Table 12


          Create an Implementation Plan Table 13


          Choose Commands for a Verification Plan Table 13


  Background Information on Implementation and Verification Plans 13


          No Single Plan Style 13


          Typical Elements in an Implementation Plan 14


          Focus for Implementation Plans for CCNP 15


          Structured Implementation Planning Methodologies 15


          Typical Verification Plan Components 16


  Conclusions 16

Part II EIGRP

Chapter 2 EIGRP Overview and Neighbor Relationships 19


  "Do I Know This Already?" Quiz 20


  Foundation Topics 23


  EIGRP CCNA Review 23


          Configuration Review 23


          Verification Review 25


          Internals Review 29


  EIGRP Neighborships 32


          Manipulating EIGRP Hello and Hold Timers 32


          Preventing Unwanted Neighbors Using Passive Interfaces 36


          Controlling Neighborships Using EIGRP Authentication 39


          Controlling Neighborships with Static Configuration 43


          Configuration Settings That Could Prevent Neighbor Relationships 46


  Neighborship over WANs 48


          Neighborship on Frame Relay 49


          Neighborship on MPLS VPN 50


          Neighborship on Metro Ethernet 51


  Exam Preparation Tasks 52


  Planning Practice 52


          Design Review Table 52


          Implementation Plan Peer Review Table 52


          Create an Implementation Plan Table 53


          Choose Commands for a Verification Plan Table 53


  Review All the Key Topics 55


  Complete the Tables and Lists from Memory 55


  Define Key Terms 55

Chapter 3 EIGRP Topology, Routes, and Convergence 57


  "Do I Know This Already?" Quiz 57


  Foundation Topics 60


  Building the EIGRP Topology Table 60


          Seeding the EIGRP Topology Table 60


          The Content of EIGRP Update Message 61


          The EIGRP Update Process 64


          WAN Issues for EIGRP Topology Exchange 65


  Building the IP Routing Table 69


          Calculating the Metrics: Feasible Distance and Reported Distance 69


          EIGRP Metric Tuning 72


  Optimizing EIGRP Convergence 78


          Fast Convergence to Feasible Successors 78


          Converging by Going Active 83


          Unequal Metric Route Load Sharing 88


  Exam Preparation Tasks 92


  Planning Practice 92


          Design Review Table 92


          Implementation Plan Peer Review Table 92


          Create an Implementation Plan Table 93


          Choose Commands for a Verification Plan Table 94


  Review all the Key Topics 94


  Complete the Tables and Lists from Memory 95


  Define Key Terms 95

Chapter 4 EIGRP Route Summarization and Filtering 97


  "Do I Know This Already?" Quiz 97


  Foundation Topics 101


  Route Filtering 101


          Filtering by Referencing ACLs 102


          Filtering by Referencing IP Prefix Lists 105


          Filtering by Using Route Maps 110


  Route Summarization 114


          Route Summarization Design 114


          Configuring EIGRP Route Summarization 120


          Auto-summary 124


  Default Routes 126


          Default Routing to the Internet Router 126


          Default Routing Configuration with EIGRP 127


  Exam Preparation Tasks 132


  Planning Practice 132


          Design Review Table 132


          Implementation Plan Peer Review Table 132


          Create an Implementation Plan Table 133


          Choose Commands for a Verification Plan Table 134


  Review all the Key Topics 134


  Complete the Tables and Lists from Memory 135


  Define Key Terms 135

Part III OSPF

Chapter 5 OSPF Overview and Neighbor Relationships 137


  "Do I Know This Already?" Quiz 137


  Foundation Topics 140


  OSPF Review 140


          OSPF Link State Concepts 140


          OSPF Configuration Review 144


          OSPF Verification Review 146


          OSPF Feature Summary 149


  OSPF Neighbors and Adjacencies on LANs 149


          Enabling OSPF Neighbor Discovery on LANs 150


          Settings That Must Match for OSPF Neighborship 152


  OSPF Neighbors and Adjacencies on WANs 162


          OSPF Network Types 162


          OSPF Neighborship over Point-to-Point Links 163


          Neighborship over Frame Relay Point-to-Point Subinterfaces 166


          Neighborship on MPLS VPN 166


          Neighborship on Metro Ethernet 167


  Exam Preparation Tasks 170


  Planning Practice 170


          Design Review Table 170


          Implementation Plan Peer Review Table 170


          Create an Implementation Plan Table 171


          Choose Commands for a Verification Plan Table 172


  Review All the Key Topics 173


  Complete the Tables and Lists from Memory 173


  Define Key Terms 173

Chapter 6 OSPF Topology, Routes, and Convergence 175


  "Do I Know This Already?" Quiz 175


  Foundation Topics 179


  LSAs and the OSPF Link State Database 179


          LSA Type 1: Router LSA 180


          LSA Type 2: Network LSA 186


          LSA Type 3: Summary LSA 191


          Limiting the Number of LSAs 195


          Summary of Internal LSA Types 195


  The Database Exchange Process 196


          OSPF Message and Neighbor State Reference 196


          Exchange Without a Designated Router 197


          Exchange with a Designated Router 200


          Flooding Throughout the Area 203


          Periodic Flooding 204


  Choosing the Best OSPF Routes 204


          OSPF Metric Calculation for Internal OSPF Routes 205


          Metric and SPF Calculations 211


          Metric Tuning 212


  Exam Preparation Tasks 215


  Planning Practice 215


          Design Review Table 215


          Implementation Plan Peer Review Table 215


          Create an Implementation Plan Table 216


          Choose Commands for a Verification Plan Table 216


  Review All the Key Topics 218


  Complete the Tables and Lists from Memory 218


  Define Key Terms 218

Chapter 7 OSPF Route Summarization, Filtering, and Default Routing 221


  "Do I Know This Already?" Quiz 221


  Foundation Topics 225


  Route Filtering 225


          Type 3 LSA Filtering 226


          Filtering OSPF Routes Added to the Routing Table 230


  Route Summarization 231


          Manual Summarization at ABRs 232


          Manual Summarization at ASBRs 235


  Default Routes and Stub Areas 236


          Domain-wide Defaults Using the default-information originate


          Command 237


          Stubby Areas 239


  Exam Preparation Tasks 251


  Planning Practice 251


          Design Review Table 251


          Implementation Plan Peer Review Table 251


          Create an Implementation Plan Table 252


          Choose Commands for a Verification Plan Table 253


  Review All the Key Topics 253


  Complete the Tables and Lists from Memory 254


  Define Key Terms 254

Chapter 8 OSPF Virtual Links and Frame Relay Operations 257


  "Do I Know This Already?" Quiz 257


  Foundation Topics 260


  Virtual Links 260


          Understanding OSPF Virtual Link Concepts 260


          Configuring OSPF Virtual Links with No Authentication 262


          Verifying the OSPF Virtual Link 264


          Configuring Virtual Link Authentication 265


  OSPF over Multipoint Frame Relay 267


          IP Subnetting Design over Frame Relay 267


          OSPF Challenges When Using Multipoint 270


          Configuring and Verifying OSPF Operations on Frame Relay 274


  Exam Preparation Tasks 283


  Planning Practice 283


          Design Review Table 283


          Implementation Plan Peer Review Table 283


          Create an Implementation Plan Table 284


          Choosing Commands for a Verification Plan Table 285


  Review All the Key Topics 285


  Complete the Tables and Lists from Memory 286


  Define Key Terms 286

Part IV Path Control

Chapter 9 Basic IGP Redistribution 289


  "Do I Know This Already?" Quiz 289


  Foundation Topics 292


  Route Redistribution Basics 292


          The Need for Route Redistribution 292


          Redistribution Concepts and Processes 294


  Redistribution into EIGRP 297


          EIGRP redistribute Command Reference 297


          Baseline Configuration for EIGRP Redistribution Examples 298


          Configuring EIGRP Redistribution with Default Metric Components 300


          Verifying EIGRP Redistribution 302


  Redistribution into OSPF 305


          OSPF redistribute Command Reference 305


          Configuring OSPF Redistribution with Minimal Parameters 306


          Setting OSPF Metrics on Redistributed Routes 310


          LSAs and Metrics for External Type 2 Routes 311


          Redistributing into OSPF as E1 Routes 318


          A Brief Comparison of E1 and E2 Routes 319


          External Routes in NSSA Areas 320


  Exam Preparation Tasks 324


  Planning Practice 324


          Design Review Table 324


          Implementation Plan Peer Review Table 325


          Create an Implementation Plan Table 326


          Choosing Commands for a Verification Plan Table 326


  Review all the Key Topics 327


  Complete the Tables and Lists from Memory 327


  Define Key Terms 327

Chapter 10 Advanced IGP Redistribution 329


  "Do I Know This Already?" Quiz 329


  Foundation Topics 332


  Redistribution with Route Maps and Distribute Lists 332


          Overview of Using route-maps with Redistribution 332


          Filtering Redistributed Routes with Route Maps 334


          Setting Metrics when Redistributing 339


          Setting the External Route Type 343


          Redistribution Filtering with the distribute-list Command 343


  Issues with Multiple Redistribution Points 344


          Preventing Routing Domain Loops with Higher Metrics 345


          Preventing Routing Domain Loops with Administrative Distance 346


          Domain Loop Problems with More than Two Routing Domains 349


  Exam Preparation Tasks 358


  Planning Practice 358


          Design Review Table 358


          Implementation Plan Peer Review Table 358


          Create an Implementation Plan Table 359


          Choose Commands for a Verification Plan Table 360


  Review all the Key Topics 361


  Complete the Tables and Lists from Memory 361


  Define Key Terms 361

Chapter 11 Policy-Based Routing and IP Service Level Agreement 363


  "Do I Know This Already?" Quiz 363


  Foundation Topics 366


  Policy-Based Routing 366


          Matching the Packet and Setting the Route 367


          PBR Configuration Example 368


          How the default Keyword Impacts PBR Logic Ordering 370


          Additional PBR Functions 371


  IP Service-Level Agreement 372


          Understanding IP SLA Concepts 373


          Configuring and Verifying IP SLA 374


          Tracking SLA Operations to Influence Routing 378


  Exam Preparation Tasks 382


  Planning Practice 382


          Design Review Table 382


          Implementation Plan Peer Review Table 382


          Create an Implementation Plan Table 382


          Choose Commands for a Verification Plan Table 383


  Review all the Key Topics 384


  Complete the Tables and Lists from Memory 385


  Definitions of Key Terms 385

Part V BGP

Chapter 12 Internet Connectivity and BGP 387


  "Do I Know This Already?" Quiz 388


  Foundation Topics 390


  The Basics of Internet Routing and Addressing 390


          Public IP Address Assignment 391


          Internet Route Aggregation 392


          The Impact of NAT/PAT 393


          Private IPv4 Addresses and Other Special Addresses 394


  Introduction to BGP 396


          BGP Basics 396


          BGP ASNs and the AS--SEQ Path Attribute 397


          Internal and External BGP 399


          Public and Private ASNs 400


  Outbound Routing Toward the Internet 402


          Comparing BGP and Default Routing for Enterprises 402


          Single Homed 404


          Dual Homed 405


          Single Multihomed 411


          Dual Multihomed 412


  Exam Preparation Tasks 414


  Planning Practice 414


          Design Review Table 414


          Implementation Plan Peer Review Table 414


          Create an Implementation Plan Table 415


  Review all the Key Topics 415


  Complete the Tables and Lists from Memory 416


  Define Key Terms 416

Chapter 13 External BGP 419


  "Do I Know This Already?" Quiz 419


  Foundation Topics 423


  External BGP for Enterprises 423


          eBGP Neighbor Configuration 423


          BGP Internals and Verifying eBGP Neighbors 430


  Verifying the BGP Table 436


          The BGP Update Message 436


          Examining the BGP Table 438


          Viewing Subsets of the BGP Table 440


  Injecting Routes into BGP for Advertisement to the ISPs 443


          Injecting Routes Using the network Command 443


          The Effect of auto-summary on the BGP network Command 445


          Injecting Routes Using Redistribution 446


  Exam Preparation Tasks 449


  Planning Practice 449


          Design Review Table 449


          Implementation Plan Peer Review Table 449


          Create an Implementation Plan Table 450


          Choose Commands for a Verification Plan Table 451


  Review all the Key Topics 452


  Complete the Tables and Lists from Memory 452


  Define Key Terms 452

Chapter 14 Internal BGP and BGP Route Filtering 455


  "Do I Know This Already?" Quiz 455


  Foundation Topics 459


  Internal BGP Between Internet-Connected Routers 459


          Establishing the Need for iBGP with Two Internet-Connected Routers 459


          Configuring iBGP 460


          Verifying iBGP 463


          Examining iBGP BGP Table Entries 464


          Understanding Next-Hop Reachability Issues with iBGP 468


  Avoiding Routing Loops when Forwarding Toward the Internet 471


          Using an iBGP Mesh 472


          IGP Redistribution and BGP Synchronization 475


  Route Filtering and Clearing BGP Peers 476


          BGP Filtering Overview 476


          Inbound and Outbound BGP Filtering on Prefix/Length 478


          Clearing BGP Neighbors 481


          Displaying the Results of BGP Filtering 483


  Exam Preparation Tasks 486


  Planning Practice 486


          Design Review Table 486


          Implementation Plan Peer Review Table 487


          Create an Implementation Plan Table 487


          Choosing Commands for a Verification Plan Table 488


  Review all the Key Topics 488


  Complete the Tables and Lists from Memory 489


  Definitions of Key Terms 489

Chapter 15 BGP Path Control 491


  "Do I Know This Already?" Quiz 491


  Foundation Topics 494


  BGP Path Attributes and Best Path Algorithm 494


          BGP Path Attributes 494


          Overview of the BGP Best Path Algorithm 495


          Perspectives on the Core 8 Best Path Steps 498


          Memorization Tips for BGP Best Path 499


  Influencing an Enterprise's Outbound Routes 500


          Influencing BGP Weight 500


          Setting the Local Preference 507


          IP Routes Based on BGP Best Paths 513


          Increasing the Length of the AS--Path Using AS--Path Prepend 517


  Influencing an Enterprise's Inbound Routes with MED 519


          MED Concepts 519


          MED Configuration 521


  Exam Preparation Tasks 523


  Planning Practice 523


          Design Review Table 523


          Implementation Plan Peer Review Table 523


          Create an Implementation Plan Table 524


          Choose Commands for a Verification Plan Table 525


  Review all the Key Topics 526


  Complete the Tables and Lists from Memory 526


  Define Key Terms 526

Part VI IPv6

Chapter 16 IP Version 6 Addressing 529


  "Do I Know This Already?" Quiz 529


  Foundation Topics 532


  Global Unicast Addressing, Routing, and Subnetting 533


          Global Route Aggregation for Efficient Routing 534


          Conventions for Representing IPv6 Addresses 536


          Conventions for Writing IPv6 Prefixes 537


          Global Unicast Prefix Assignment Example 539


          Subnetting Global Unicast IPv6 Addresses Inside an Enterprise 541


          Prefix Terminology 543


  Assigning IPv6 Global Unicast Addresses 544


          Stateful DHCP for IPv6 545


          Stateless Autoconfiguration 545


          Static IPv6 Address Configuration 549


  Survey of IPv6 Addressing 549


          Overview of IPv6 Addressing 550


          Unicast IPv6 Addresses 550


          Multicast and Other Special IPv6 Addresses 553


          Layer 2 Addressing Mapping and Duplicate Address Detection 554


  Configuring IPv6 Addresses on Cisco Routers 556


          Configuring Static IPv6 Addresses on Routers 557


          Multicast Groups Joined by IPv6 Router Interfaces 559


          Connected Routes and Neighbors 560


          The IPv6 Neighbor Table 561


          Stateless Autoconfiguration 561


  Exam Preparation Tasks 563


  Planning Practice 563


          Design Review Table 563


          Implementation Plan Peer Review Table 563


          Create an Implementation Plan Table 564


          Choose Commands for a Verification Plan Table 564


  Review all the Key Topics 565


  Complete the Tables and Lists from Memory 566


  Define Key Terms 566

Chapter 17 IPv6 Routing Protocols and Redistribution 569


  "Do I Know This Already?" Quiz 569


  Foundation Topics 573


  RIP Next Generation (RIPng) 573


          RIPng-Theory and Comparisons to RIP-2 574


          Configuring RIPng 575


          Verifying RIPng 578


  EIGRP for IPv6 581


          EIGRP for IPv4 and IPv6-Theory and Comparisons 581


          Configuring EIGRP for IPv6 582


          Verifying EIGRP for IPv6 584


  OSPF Version 3 588


          Comparing OSPFv2 and OSPFv3 588


          Configuring OSPFv3 590


          Verifying OSPFv3 592


  IPv6 IGP Redistribution 595


          Redistributing without Route Maps 596


          Redistributing with Route Maps 598


  Static IPv6 Routes 599


  Exam Preparation Tasks 602


  Planning Practice 602


          Implementation Plan Peer Review Table 602


          Create an Implementation Plan Table 602


          Choose Commands for a Verification Plan Table 603


  Review all the Key Topics 604


  Complete the Tables and Lists from Memory 604


  Define Key Terms 604

Chapter 18 IPv4 and IPv6 Coexistence 607


  "Do I Know This Already?" Quiz 607


  Foundation Topics 611


  IPv4 and IPv6 Migration and Coexistence Concepts 611


          IPv4/IPv6 Dual Stacks 611


          Tunneling 612


          NAT Protocol Translation 617


  Static Point-to-Point IPv6 Tunnels 619


          Manually Configured Tunnels 620


          GRE Tunnels 624


          Point-to-Point IPv6 Tunnel Summary 625


  Dynamic Multipoint IPv6 Tunnels 626


          Automatic 6to4 Tunnels 627


          IPv6 ISATAP Tunnels 634


          Multipoint IPv6 Tunnel Summary 639


  Exam Preparation Tasks 641


  Planning Practice 641


          Design Review Table 641


          Implementation Plan Peer Review Table 642


          Create an Implementation Plan Table 642


          Choose Commands for a Verification Plan Table 643


  Review all the Key Topics 644


  Complete the Tables and Lists from Memory 644


  Define Key Terms 644

Part VII Branch Office Networking

Chapter 19 Routing over Branch Internet Connections 647


  "Do I Know This Already?" Quiz 647


  Foundation Topics 650


  Branch Office Broadband Internet Access 650


          Broadband Internet Access Basics 650


          Branch Router as DHCP Server and Client 652


          Branch Office Security 653


          Using IPsec Tunnels 654


          Branch Routing for the Small Branch 656


          Routing in Medium and Large Branches 657


  Branch Router Configuration for Broadband Access 659


          Understanding DSL Concepts 659


          Configuring DSL 661


          Configuring NAT 663


          Configuring DHCP Server 664


  VPN Configuration 664


          Configuring an IPsec VPN 665


          Configuring GRE Tunnels 666


          Summary-Branch Routing from PC1 to Enterprise Server S1 667


  Exam Preparation Tasks 670


  Planning Practice 670


  Review all the Key Topics 671


  Define Key Terms 671

Part VIII Final Preparation

Chapter 20 Final Preparation 673


  Tools for Final Preparation 673


          Exam Engine and Questions on the CD 673


          Install the Software from the CD 674


          Activate and Download the Practice Exam 674


                  Activating Other Exams 675


          The Cisco Learning Network 675


          Memory Tables 675


          Chapter-Ending Review Tools 676


  Suggested Plan for Final Review/Study 676


          Step 1: Review Key Topics and DIKTA Questions 677


          Step 3: Hands-On Practice 677


          Step 6: Subnetting Practice 677


          Step 7: Use the Exam Engine 678

Summary 679

Part IX Appendixes

Appendix A Answers to "Do I Know This Already?" Quizzes 681

Appendix B Conversion Tables 701

Appendix C Route Exam Updates 705

Index 708

CD-Only Appendixes and Glossary

Appendix D Memory Tables

Appendix E Memory Tables Answer Key

Appendix F Completed Planning Practice Tables

Glossary

9781587202537, TOC, 1/7/10