CCNP SWITCH 642-813 Official Certification Guide

by Hucaby, David

• ISBN13: 9781587202438
• ISBN10: 1587202433
• Edition: 1st
• Format: Hardcover
• Copyright: 2010-02-09
• Publisher: Cisco Press

Summary

CCNP SWITCH 642-813

Official Certification Guide

David Hucaby, CCIE® No. 4594

CCNP SWITCH Exam Preparation

- Master the CCNP® SWITCH 642-813 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 SWITCH 642-813 Official Certification Guide is a best-of-breed Cisco® exam study guide that focuses specifically on the objectives for the CCNP® SWITCH exam. Network architect and best-selling author Dave Hucaby 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 SWITCH 642-813 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. The complete exam topic list makes referencing easy. Chapter-ending Exam Preparation Tasks sections help drill you on key concepts and commands you must know thoroughly.

The companion CD-ROM contains a powerful testing engine that enables you to focus on individual topic areas or take complete, timed exams. The assessment engine also tracks your performance and provides feedback on a topic-by-topic 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 SWITCH 642-813 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.

Author Biography

David Hucaby, CCIE No. 4594, is a lead network engineer for the University of Kentucky, where he works with healthcare networks based on the Cisco Catalyst, ASA, FWSM, and VPN product lines. David has a Bachelor of Science degree and Master of Science degree in electrical engineering from the University of Kentucky. He is the author of several Cisco Press titles, including Cisco ASA, PIX, and FWSM Firewall Handbook, Second Edition; Cisco Firewall Video Mentor; and Cisco LAN Switching Video Mentor.

 

David lives in Kentucky with his wife, Marci, and two daughters.

 

Table of Contents

Foreword

Introduction

Part I New CCNP Exam Approaches

Chapter 1 The Planning Tasks of the CCNP Exams

Perspectives on CCNP Exam Topics Related to Planning 5

    CCNP Switch Exam Topics That Do Not Require the CLI 6

    Planning Exam Topics 7

Relating the Exam Topics to a Typical Network Engineer’s Job 8

    A Fictitious Company and Networking Staff 9

    The Design Step 10

    Implementation Planning Step 10

    Verification Planning Step 11

    Documenting Implementation Results 12

    Summary of the Role of Network Engineers 12

How to Prepare for the Planning Topics on the CCNP Exams 13

Part II Building a Campus Network

Chapter 2 Switch Operation

“Do I Know This Already?” Quiz 17

Foundation Topics 20

Layer 2 Switch Operation 20

    Transparent Bridging 20

    Follow That Frame! 22

Multilayer Switch Operation 24

    Types of Multilayer Switching 24

    Follow That Packet! 25

    Multilayer Switching Exceptions 26

Tables Used in Switching 27

    Content-Addressable Memory 27

    Ternary Content-Addressable Memory 28

Monitoring Switching Tables 32

    CAM Table Operation 32

    TCAM Operation 35

Exam Preparation Tasks 36

Review All Key Topics 36

Define Key Terms 36

Use Command Reference to Check Your Memory 36

Chapter 3 Switch Port Configuration

“Do I Know This Already?” Quiz 39

Foundation Topics 42

Ethernet Concepts 42

    Ethernet (10 Mbps) 42

    Fast Ethernet 43

    Gigabit Ethernet 45

    10-Gigabit Ethernet 47

Connecting Switches and Devices 48

    Ethernet Port Cables and Connectors 48

    Gigabit Ethernet Port Cables and Connectors 49

Switch Port Configuration 50

    Selecting Ports to Configure 50

    Identifying Ports 52

    Port Speed 52

    Port Duplex Mode 52

    Managing Error Conditions on a Switch Port 53

    Enable and Use the Switch Port 55

    Troubleshooting Port Connectivity 55

Exam Preparation Tasks 57

Review All Key Topics 57

Define Key Terms 57

Use Command Reference to Check Your Memory 57

Chapter 4 VLANs and Trunks

“Do I Know This Already?” Quiz 61

Foundation Topics 65

Virtual LANs 65

    VLAN Membership 65

    Deploying VLANs 69

VLAN Trunks 70

    VLAN Frame Identification 71

    Dynamic Trunking Protocol 74

VLAN Trunk Configuration 75

    VLAN Trunk Configuration 75

Troubleshooting VLANs and Trunks 79

Exam Preparation Tasks 82

Review All Key Topics 82

Define Key Terms 82

Use Command Reference to Check Your Memory 82

Chapter 5 VLAN Trunking Protocol

“Do I Know This Already?” Quiz 85

Foundation Topics 88

VLAN Trunking Protocol 88

    VTP Domains 88

    VTP Modes 88

    VTP Advertisements 89

VTP Configuration 92

    Configuring a VTP Management Domain 93

    Configuring the VTP Mode 93

    Configuring the VTP Version 95

    VTP Configuration Example 96

    VTP Status 96

VTP Pruning 97

    Enabling VTP Pruning 99

Troubleshooting VTP 100

Exam Preparation task 102

Review All Key Topics 102

Complete Tables and Lists from Memory 102

Define Key Terms 102

Use Command Reference to Check Your Memory 102

Chapter 6 Aggregating Switch Links

“Do I Know This Already?” Quiz 105

Foundation Topics 108

Switch Port Aggregation with EtherChannel 108

    Bundling Ports with EtherChannel 109

    Distributing Traffic in EtherChannel 109

    Configuring EtherChannel Load Balancing 111

EtherChannel Negotiation Protocols 112

    Port Aggregation Protocol 113

    Link Aggregation Control Protocol 113

EtherChannel Configuration 114

    Configuring a PAgP EtherChannel 114

    Configuring a LACP EtherChannel 115

Troubleshooting an EtherChannel 116

Exam Preparation Tasks 120

Review All Key Topics 120

Complete Tables and Lists from Memory 120

Define Key Terms 120

Command Reference to Check Your Memory 120

Chapter 7 Traditional Spanning Tree Protocol

“Do I Know This Already?” Quiz 123

Foundation Topics 126

IEEE 802.1D Overview 126

    Bridging Loops 126

    Preventing Loops with Spanning Tree Protocol 129

    Spanning-Tree Communication: Bridge Protocol Data Units 130

    Electing a Root Bridge 131

    Electing Root Ports 133

    Electing Designated Ports 135

    STP States 137

    STP Timers 139

    Topology Changes 141

Types of STP 146

    Common Spanning Tree 147

    Per-VLAN Spanning Tree 147

    Per-VLAN Spanning Tree Plus 147

Exam Preparation Tasks 149

Review All Key Topics 149

Complete Tables and Lists from Memory 149

Define Key Terms 149

Chapter 8 Spanning-Tree Configuration

“Do I Know This Already?” Quiz 151

Foundation Topics 154

STP Root Bridge 154

    Root Bridge Placement 154

    Root Bridge Configuration 157

Spanning-Tree Customization 161

    Tuning the Root Path Cost 161

    Tuning the Port ID 163

Tuning Spanning-Tree Convergence 164

    Modifying STP Timers 164

Redundant Link Convergence 167

    PortFast: Access-Layer Nodes 167

    UplinkFast: Access-Layer Uplinks 168

    BackboneFast: Redundant Backbone Paths 170

Monitoring STP 171

Exam Preparation Tasks 173

Review All Key Topics 173

Complete Tables and Lists from Memory 173

Define Key Terms 173

Use Command Reference to Check Your Memory 173

Chapter 9 Protecting the Spanning Tree Protocol Topology

“Do I Know This Already?” Quiz 177

Foundation Topics 180

Protecting Against Unexpected BPDUs 180

    Root Guard 180

    BPDU Guard 181

Protecting Against Sudden Loss of BPDUs 182

    Loop Guard 183

    UDLD 184

Using BPDU Filtering to Disable STP on a Port 186

Troubleshooting STP Protection 187

Exam Preparation Task 188

Review All Key Topics 188

Complete Tables and Lists from Memory 188

Define Key Terms 188

Use Command Reference to Check Your Memory 188

Chapter 10 Advanced Spanning Tree Protocol

“Do I Know This Already?” Quiz 193

Foundation Topics 196

Rapid Spanning Tree Protocol 196

    RSTP Port Behavior 196

    BPDUs in RSTP 197

    RSTP Convergence 198

    Topology Changes and RSTP 201

    RSTP Configuration 202

    Rapid Per-VLAN Spanning Tree Protocol 203

Multiple Spanning Tree Protocol 204

    MST Overview 206

    MST Regions 206

    Spanning-Tree Instances Within MST 207

    MST Configuration 209

Exam Preparation Tasks 211

Review All Key Topics 211

Complete Tables and Lists from Memory 211

Define Key Terms 212

Use Command Reference to Check Your Memory 212

Chapter 11 Multilayer Switching

“Do I Know This Already?” Quiz 215

Foundation Topics 218

InterVLAN Routing 218

    Types of Interfaces 218

    Configuring InterVLAN Routing 219

Multilayer Switching with CEF 221

    Traditional MLS Overview 221

    CEF Overview 222

    Forwarding Information Base 222

    Adjacency Table 226

    Packet Rewrite 229

    Configuring CEF 229

Verifying Multilayer Switching 230

    Verifying InterVLAN Routing 230

    Verifying CEF 232

Using DHCP with a Multilayer Switch 233

    Configuring an IOS DHCP Server 235

    Configuring a DHCP Relay 235

Exam Preparation Tasks 237

Review All Key Topics 237

Complete Tables and Lists from Memory 237

Define Key Terms 237

Use Command Reference to Check Your Memory 237

Part III Designing Campus Networks

Chapter 12 Enterprise Campus Network Design

“Do I Know This Already?” Quiz 243

Foundation Topics 247

Hierarchical Network Design 247

    Predictable Network Model 249

    Access Layer 251

    Distribution Layer 251

    Core Layer 251

Modular Network Design 252

    Switch Block 254

    Core Block 259

Exam Preparation Tasks 263

Review All Key Topics 263

Complete Tables and Lists from Memory 263

Define Key Terms 263

Chapter 13 Layer 3 High Availability

“Do I Know This Already?” Quiz 265

Foundation Topics 268

Router Redundancy in Multilayer Switching 268

    Packet-Forwarding Review 268

    Hot Standby Router Protocol 269

    Virtual Router Redundancy Protocol 277

    Gateway Load Balancing Protocol 280

    Verifying Gateway Redundancy 289

Supervisor and Route Processor Redundancy 289

    Redundant Switch Supervisors 289

    Configuring the Redundancy Mode 290

    Configuring Supervisor Synchronization 293

    Nonstop Forwarding 293

Exam Preparation Tasks 295

Review All Key Topics 295

Define Key Terms 295

Use Command Reference to Check Your Memory 295

Part IV Campus Network Services

Chapter 14 IP Telephony

“Do I Know This Already?” Quiz 301

Foundation Topics 304

Power over Ethernet 304

    How PoE Works 304

    Detecting a Powered Device 304

    Supplying Power to a Device 305

    Configuring PoE 307

    Verifying PoE 307

Voice VLANs 308

    Voice VLAN Configuration 308

    Verifying Voice VLAN Operation 311

Voice QoS 312

    QoS Overview 313

    Best-Effort Delivery 314

    Integrated Services Model 314

    Differentiated Services Model 314

    DiffServ QoS 315

    Implementing QoS for Voice 318

    Configuring a Trust Boundary 319

    Using Auto-QoS to Simplify a Configuration 321

    Verifying Voice QoS 324

Exam Preparation Tasks 327

Review All Key Topics 327

Complete Tables and Lists from Memory 327

Define Key Terms 327

Use Command Reference to Check Your Memory 328

Chapter 15 Integrating Wireless LANs

“Do I Know This Already?” Quiz 331

Foundation Topics 335

Wireless LAN Basics 335

    Comparing Wireless and Wired LANs 335

    Avoiding Collisions in a WLAN 336

WLAN Building Blocks 338

    Access Point Operation 340

    Wireless LAN Cells 341

WLAN Architecture 344

    Traditional WLAN Architecture 344

    Cisco Unified Wireless Network Architecture 346

    WLC Functions 349

    Lightweight AP Operation 350

    Traffic Patterns in a Cisco Unified Wireless Network 352

Roaming in a Cisco Unified Wireless Network 354

    Intracontroller Roaming 355

    Intercontroller Roaming 356

    Mobility Groups 361

Configuring Switch Ports for WLAN Use 361

    Configuring Support for Autonomous APs 361

    Configuring Support for LAPs 362

    Configuring Support for WLCs 363

Exam Preparation Tasks 365

Review All Key Topics 365

Define Key Terms 365

Part V Securing Switched Networks

Chapter 16 Securing Switch Access

“Do I Know This Already?” Quiz 369

Foundation Topics 373

Port Security 373

Port-Based Authentication 376

    802.1x Configuration 376

    802.1x Port-Based Authentication Example 378

Mitigating Spoofing Attacks 378

    DHCP Snooping 379

    IP Source Guard 381

    Dynamic ARP Inspection 383

Best Practices for Securing Switches 385

Exam Preparation Tasks 389

Review All Key Topics 389

Complete Tables and Lists from Memory 389

Define Key Terms 389

Use Command Reference to Check Your Memory 390

Chapter 17 Securing with VLANs

“Do I Know This Already?” Quiz 393

Foundation Topics 396

VLAN Access Lists 396

    VACL Configuration 396

Private VLANs 397

    Private VLAN Configuration 399

    Configure the Private VLANs 399

    Associate Ports with Private VLANs 400

    Associate Secondary VLANs to a Primary VLAN SVI 401

Securing VLAN Trunks 402

    Switch Spoofing 402

    VLAN Hopping 404

Exam Preparation Tasks 407

Review All Key Topics 407

Complete Tables and Lists from Memory 407

Define Key Terms 407

Use Command Reference to Check Your Memory 408

Part VI Final Exam Preparation

Chapter 18 Final Preparation

Exam Engine on the CD 413

    Install the Exam Engine Software from the CD 413

    Download and Activate the Practice Exam Content 414

    Activating Other Exams 414

Study Plan 415

    Recall the Facts 415

    Practice Configurations 415

    Use the Exam Engine 416

    The Cisco Learning Network 416

Part VII Appendixes

Appendix A Answers to the “Do I Know This Already?” Quizzes 421

Glossary 431

On This Book’s Website:

Appendix B SWITCH Exam Updates: Version 1.0

On This Book’s CD:

Appendix C Memory Tables

Appendix D Memory Tables Answer Key