CCNA学习指南 2003英文升级版【2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载】

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Introduction1

Chapter 1 Internetworking1

Internetworking Basics3

Internetworking Models6

The Layered Approach7

Advantages of Reference Models8

The OSI Reference Model8

The OSI Layers9

Assessment Test15

Ethernet Networking24

Half-and Full-Duplex Ethernet25

Ethernet at the Data Link Layer26

Ethernet at the Physical Layer30

Ethernet Cabling33

Straight-Through Cable33

Crossover Cable33

Rolled Cable34

Data Encapsulation36

Cabling the Wide Area Network38

Serial Transmission38

Data Terminal Equipment and Data Communication Equipment38

Fixed and Modular Interfaces39

Integrated Services Digital Network (ISDN)Connections39

Selecting Cisco Products40

Cisco Routers41

Cisco Hubs41

Cisco Switches43

The Cisco Three-Layer Hierarchical Model44

The Core Layer46

The Distribution Layer46

The Access Layer47

Summary47

Exam Essentials48

Key Terms49

Written Labs50

Written Lab 1.1:OSI Questions51

Written Lab 1.2:Defining the OSI Layers and Devices52

Review Questions53

Written Lab 1.3:Identifying Collision and Broadcast Domains53

Answers to Review Questions58

Answers to Written Labs60

Answers to Written Lab 1.160

Answer to Written Lab 1.261

Answers to Written Lab 1.361

Chapter 2 Layer-2 Switching63

Before Layer-2 Switching65

Switching Services68

Limitations of Layer-2 Switching68

Bridging vs.LAN Switching69

Three Switch Functions at Layer 269

Spanning Tree Protocol(STP)73

Spanning-Tree Terms74

Spanning-Tree Operations75

Spanning-Tree Example77

LAN Switch Types79

Cut-Through(Real Time)80

FragmentFree(Modified Cut-Through)80

Store-and-Forward80

Summary81

Exam Essentials81

Written Lab 282

Review Questions82

Key Terms82

Answers to Review Questions87

Answers to Written Lab 289

Chapter 3 Internet Protocols91

TCP/IP and the DoD Model92

The Process/Application Layer Protocols94

The Host-to-Host Layer Protocols98

The Internet Layer Protocols106

IP Addressing113

IP Terminology114

The Hierarchical IP Addressing Scheme114

Subnetting121

Subnet Masks122

Subnetting Class C Addresses123

Subnetting Class B Addresses131

Subnetting Class A Addresses136

Summary138

Exam Essentials139

Key Terms140

Written Lab 3141

Review Questions141

Answers to Review Questions146

Answers to Written Lab 3148

Chapter 4 Introduction to the Cisco IOS151

Cisco Router User Interface152

Connecting to a Cisco Router153

Cisco Router IOS153

Bringing Up a Router154

Setup Mode155

Command-Line Interface159

Logging into the Router160

Overview of Router Modes161

CLI Prompts162

Editing and Help Features164

Gathering Basic Routing Information168

Setting Passwords169

Encrypting Your Passwords172

Banners174

Router Interfaces175

Descriptions179

Hostnames179

Viewing and Saving Configurations180

Verifying Your Configuration182

Summary187

Exam Essentials188

Key Terms189

Commands Used in This Chapter190

Written Lab 4192

Hands-on Labs193

Hands-on Lab 4.1:Logging into a Router193

Hands-on Lab 4.2:Using the Help and Editing Features194

Hands-on Lab 4.4:Setting Your Passwords195

Hands-on Lab 4.3:Saving a Router Configuration195

Hands-on Lab 4.5:Setting the Hostname,Descriptions,IP Address,and Clock Rate197

Review Questions199

Answers to Review Questions203

Answers to Written Lab 4205

Chapter 5 IP Routing207

Routing Basics208

The IP Routing Process209

IP Routing in a Larger Network214

Configuring IP Routing in Our Network218

Static Routing218

Default Routing223

Dynamic Routing225

Routing Protocol Basics226

Administrative Distances226

Routing Protocols227

Distance-Vector Routing Protocols227

Routing Loops229

Maximum Hop Count230

Split Horizon230

Route Poisoning231

Holddowns231

Routing Information Protocol(RIP)232

RIP Timers232

Configuring RIP Routing233

Verifying the RIP Routing Tables235

Holding Down RIP Propagations237

Interior Gateway Routing Protocol(IGRP)238

IGRP Timers239

Configuring IGRP Routing239

Verifying the IGRP Routing Tables241

Verifying Your Configurations243

The Show Protocols Command243

The Show IP Protocol Command243

The Debug IP RIP Command245

The Debug IP IGRP Command246

Summary248

Exam Essentials248

Commands Used in This Chapter249

Key Terms249

Written Lab 5250

Hands-on Labs251

Hands-on Lab 5.1:Creating Static Routes251

Hands-on Lab 5.2:Dynamic Routing with RIP253

Hands-on Lab 5.3:Dynamic Routing with IGRP254

Review Questions255

Answers to Review Questions260

Answers to Written Lab 5262

Chapter 6 Virtual LANs(VLANs)263

Introduction to VLANs264

Broadcast Control266

Flexibility and Scalability267

Security267

VLAN Memberships270

Static VLANs270

Dynamic VLANs271

Identifying VLANs271

Frame Tagging272

VLAN Identification Methods273

Inter-Switch Link (ISL) Protocol274

VLAN Trunk Protocol(VTP)275

VTP Modes of Operation276

VTP Pruning277

Routing between VLANs277

Summary278

Exam Essentials279

Key Terms280

Written Lab 6280

Review Questions281

Answers to Review Questions285

Answers to Written Lab 6287

Chapter 7 Managing a Cisco Internetwork289

The Internal Components of a Cisco Router290

The Router Boot Sequence291

Managing Configuration Registers292

Understanding the Configuration Register Bits292

Checking the Current Configuration Register Value293

Changing the Configuration Register294

Recovering Passwords295

Backing Up and Restoring the Cisco IOS298

Verifying Flash Memory298

Backing Up the Cisco IOS299

Restoring or Upgrading the Cisco Router IOS300

Backing Up and Restoring the Cisco Configuration302

Backing Up the Cisco Router Configuration303

Restoring the Cisco Router Configuration304

Erasing the Configuration305

Using Cisco Discovery Protocol305

Getting CDP Timers and Holdtime Information306

Gathering Neighbor Information306

Gathering Interface Traffic Information309

Gathering Port and Interface Information309

Using Telnet311

Telnetting into Multiple Devices Simultaneously312

Checking Telnet Connections313

Checking Telnet Users314

Closing Telnet Sessions314

Resolving Hostnames315

Building a Host Table315

Using DNS to Resolve Names317

Checking Network Connectivity319

Using the Ping Command319

Using the Traceroute Command320

Exam Essentials321

Summary321

Key Terms323

Commands Used in This Chapter323

Written Lab 7325

Hands-on Labs326

Hands-on Lab 7.1:Backing Up Your Router IOS326

Hands-on Lab 7.2:Upgrading or Restoring Your Router IOS327

Hands-on Lab 7.3:Backing Up the Router Configuration327

Hands-on Lab 7.4:Using the Cisco Discovery Protocol(CDP)327

Hands-on Lab 7.5:Using Telnet328

Hands-on Lab 7.6:Resolving Hostnames329

Review Questions330

Answers to Review Questions334

Answers to Written Lab 7336

Chapter 8 Configuring Novell IPX337

Introduction to Novell IPX338

Novell IPX Protocol Stack338

Client-Server Communication340

Server-Server Communication341

IPX Addressing345

Encapsulation346

Enabling IPX on Cisco Routers348

Enabling IPX Routing348

Enabling IPX on Individual Interfaces349

Configuring Our Internetwork with IPX350

Configuring IPX on the 2501B Router351

Configuring IPX on the 2501A Router351

Configuring IPX on the 2621A Router351

Configuring IPX on the 2501C Router352

Verifying the IPX Routing Tables352

Adding Secondary Addresses354

Configuring Secondary Addresses354

Subinterfaces355

Configuring Our Internetwork with Multiple Ethernet Frame Types356

Configuring Multiple Frame Types on the 2621A Router356

Configuring Multiple Frame Types on the 2501A Router357

Configuring Multiple Frame Types on the 2501B Router357

Configuring Multiple Frame Types on the 2501C Router358

Verifying the IPX Routing Tables358

The Show IPX Servers Command359

Monitoring IPX on Cisco Routers359

The Show IPX Route Command360

The Show IPX Traffic Command361

The Show IPX Interface Command362

The Show Protocols Command363

The Debug IPX Command364

The Ping IPX Command366

Summary367

Exam Essentials367

Key Terms368

Commands Used in This Chapter368

Hands-on Labs369

Written Lab 8369

Hands-on Lab 8.1:Configuring Internetworking Packet Exchange(IPX)370

Hands-on Lab 8.2:Adding Secondary Network Addresses and Multiple Frame Types with IPX371

Review Questions373

Answers to Review Questions377

Answers to Written Lab 8379

Chapter 9 Managing Traffic with Access Lists381

Access Lists382

Standard IP Access Lists384

Controlling VTY(Telnet)Access388

Extended IP Access Lists388

Monitoring IP Access Lists393

IPX Access Lists393

Standard IPX Access Lists394

Extended IPX Access Lists395

IPX SAP Filters395

Verifying IPX Access Lists396

Summary397

Exam Essentials398

Key Terms398

Commands Used in This Chapter399

Written Lab 9400

Hands-on Labs400

Hands-on Lab 9.1:Standard IP Access Lists400

Hands-on Lab 9.2:Extended IP Access Lists402

Hands-on Lab 9.3:Standard IPX Access Lists404

Review Questions405

Answers to Review Questions409

Answers to Written Lab 9412

Chapter 10 Wide Area Networking Protocols413

Wide Area Networks414

Defining WAN Terms414

WAN Connection Types415

WAN Support416

High-Level Data-Link Control Protocol(HDLC)417

Point-to-Point Protocol(PPP)418

Link Control Protocol(LCP)Configuration Options419

PPP Session Establishment420

PPP Authentication Methods420

Configuring PPP Authentication421

Configuring PPP on Cisco Routers421

Verifying PPP Encapsulation422

Frame Relay423

Frame Relay Terminology424

Frame Relay Encapsulation426

Data Link Connection Identifiers(DLCIs)426

Local Management Interface(LMI)427

Subinterfaces428

Mapping Frame Relay432

Frame Relay Congestion Control433

Committed Information Rate(CIR)433

Monitoring Frame Relay434

Integrated Services Digital Network(ISDN)437

ISDN Components438

Basic Rate Interface(BRI)441

Primary Rate Interface(PRI)441

ISDN with Cisco Routers442

Dial-on-Demand Routing (DDR)443

Configuring DDR443

Configuring Static Routes443

Specifying Interesting Traffic444

Configuring the Dialer Information444

Optional Commands446

DDR with Access Lists446

Verifying the ISDN Operation447

Exam Essentials448

Summary448

Key Terms449

Commands Used in This Chapter450

Written Lab 10452

Hands-on Labs453

Hands-on Lab 10.1:Configuring PPP Encapsulation and Authentication453

Hands-on Lab 10.2:Configuring and Monitoring HDLC454

Hands-on Lab 10.3:Configuring Frame Relay and Subinterfaces455

Hands-on Lab 10.4:Configuring ISDN and BRI Interfaces456

Review Questions459

Answers to Review Questions463

Answers to Written Lab 10465

Appendix A Introduction to the Cisco IOS:Hands-on Labs467

Lab A.1:Logging into a Cisco Router468

Lab A.2:Editing and Help Features469

Lab A.3:Gathering Basic Router Information472

Lab A.4:Setting the Passwords474

Lab A.5:Setting Router Banners475

Lab A.6:Configuring Router Interfaces476

Lab A.7:Bringing up an Interface477

Lab A.8:Configuring an IP Address on an Interface478

Lab A.9:Serial Interface Commands478

Lab A.10:Setting the Router Hostnames480

Lab A.11:Setting Interface Descriptions480

Lab A.13:Verifying Your Configuration481

Lab A.12:Saving Your Configurations481

Lab A.14:Final Lab483

Appendix B Configuring the Catalyst 1900 Switch487

Features of the 1900 Switch489

The Three Configuration Options489

Connecting to the Console Port490

1900 Switch Startup490

Connecting to an Ethernet Port491

Cisco 1900 IOS Configuration Commands492

Setting the Passwords492

Setting the Hostname495

Setting IP Information496

Configuring Switch Interfaces498

Configuring Interface Descriptions500

Configuring the Port Duplex501

Verifying IP Connectivity502

Erasing the Switch Configuration503

Managing the MAC Address Table503

Setting Permanent and Static MAC Addresses504

Configuring Port Security507

Using the Show Version Command508

Changing the LAN Switch Type508

Configuring VLANs509

Assigning Switch Ports to VLANs510

Configuring Trunk Ports512

Verifying Trunk Links513

Clearing VLANs from Trunk Links513

Configuring ISL Routing514

Configuring VTP515

Configuring the Domain516

Adding to a VTP Domain516

VTP Pruning517

Restoring or Upgrading the Catalyst 1900 IOS518

Backing Up and Restoring the Catalyst 1900 Configuration518

CDP with the 1900 Switch519

Summary520

Key Terms521

Commands Used in This Appendix521

Hands-on Labs523

Written Lab Appendix B523

Lab B.1:Managing the 1900 Switch524

Lab B.2:1900 Switch Operations525

Lab B.3:Creating VLANs526

Lab B.4:Assigning VLANs to Switch Ports527

Lab B.5:Configuring Trunking528

Lab B.6:Configuring VTP529

Lab B.7:Configuring Inter-VLAN Routing with ISL530

Review Questions531

Answers to Review Questions535

Answers to Written Lab Appendix B537

Appendix C Commands in This Study Guide539

Glossary551