CCNA学习指南：英文PDF电子书下载

1 Introduction to Internetworking 1

Certification Objective 1.01 2

The Internetworking Model 2

Foreword 3

Network Evolution 3

The OSI Model 4

About the Contributors 5

Encapsulation 7

Certification Objective 1.02 7

Physical and Data Link Layers 7

Acknowledgments 9

DIX and 802.3 Ethernet 9

802.5 Token Ring 11

ANSI FDDI 13

MAC Addresses 14

Interfaces 15

Wide Area Network Services 19

Preface 21

Introduction 25

Certification Objective 1.03 28

Network Layer and Path Determination 28

Layer 3 Addresses 28

Routed Protocols vs. Routing Protocols 29

Reliability 30

Transport Layer 30

Certification Objective 1.04 30

Routing Algorithms and Metrics 30

Windowing 31

Certification Objective 1.05 31

Upper-Layer Protocols 31

Certification Objective 1.06 31

Cisco Routers, Switches, and Hubs 31

Certification Objective 1.07 34

Configuring a Cisco Switch and Hub 34

Certification Summary 35

Two-Minute Drill 38

SelfTest 41

2 Getting Started with Cisco IOS Software 47

Certification Objective 2.01 48

User Interface 48

User and Privileged Modes 48

The Command-Line Interface 50

Certification Objective 2.02 55

Router Basics 55

Router Elements 55

Router Modes 56

Examine the Router Status 58

Cisco Discovery Protocol 61

Remote Access to a Router 62

Basic Testing 63

Debug 65

Routing Basics 66

Certification Objective 2.03 70

Initial Configuration 70

Virtual Configuration Register Settings 74

Startup Sequence--Boot System Commands 76

Configuring to/from a TFTP Server 77

Certification Objective 2.04 80

AutoInstalling Configuration Data 80

Certification Summary 81

Two-Minute Drill 82

SelfTest 85

3 IP Addressing 91

Structure of an IP Address 93

Certification Objective 3.01 93

Classes of IP Addresses 93

Special Cases: Loopback, Broadcast, and Network Addresses 95

Identifying Address Classes 96

Importance of the Subnet Mask 98

Converting between Binary and Decimal 99

Certification Objective 3.02 104

Subnetting and Subnet Masks 104

Purpose of Subnetting 104

Adding Bits to the Default Subnet Mask 105

Certification Objective 3.03 107

Subnet Planning 107

Choosing a Subnet Mask 107

Impact on the Number of Hosts 107

Determining Address Ranges for Each Subnet 108

Certification Objective 3.04 110

Complex Subnetting 110

Crossing Octet Boundaries with Subnet Bits 110

Variable-Length Subnet Masking 111

Supernetting 112

Certification Objective 3.05 114

Configuring IP Addresses with Cisco IOS 114

Setting IP Addresses and Parameters 114

Host Name to Address Mappings 116

Using Ping 117

Using IP TRACE and Telnet 118

Certification Summary 119

Two-Minute Drill 120

SelfTest 123

4 TCP/IP Protocol Suite 133

Certification Objective 4.01 135

Application Layer Services 135

Certification Objective 4.02 136

Presentation and Session Layer Services 136

Remote Procedure Calls 136

Sockets 136

NetBIOS 137

Transport Layer Interface 137

Certification Objective 4.03 138

Detailed Protocol Structure 138

Transport Layer 138

TCP 140

UDP 143

Certification Objective 4.04 145

Network Layer 145

Internet Protocol(IP) 146

Address Resolution Protocol(ARP) 147

Reverse Address Resolution Protocol(RARP) 148

Inverse Address Resolution Protocol(InARP) 148

Internet Control Message Protocol(ICMP) 149

Certification Objective 4.05 150

Operating System Commands 150

UNIX 151

32-bit Windows 153

Certification Summary 154

Two-Minute Drill 155

SelfTest 158

5 IP Routing Protocols 165

Certification Objective 5.01 166

Why Routing Protocols? 166

Theory 171

Certification Objective 5.02 175

Static Routes and Dynamic Routes 175

Default Routes 181

Certification Objective 5.03 181

Certification Objective 5.04 183

Link State vs. Distance Vector 183

Distance Vector Routing Protocols 183

Link-State Routing Protocols 189

Interior vs. Exterior Gateway Protocols 191

Certification Objective 5.05 193

RIP 193

IGRP 197

Certification Objective 5.06 197

EIGRP 200

Certification Objective 5.07 202

OSPF 202

Certification Summary 204

Two-Minute Drill 206

SelfTest 209

6 IP Configuration 217

Certification Objective 6.01 218

IP Configuration Commands 218

Configuring Static Routes 219

Certification Objective 6.02 219

Certification Objective 6.03 223

Configuring Default Routes 223

Certification Objective 6.04 223

Configuring RIP Routing 223

Certification Objective 6.05 224

Configuring IGRP Routing 224

Certification Objective 6.07 228

DNS and DHCP Configuration 228

IP Host Tables 228

Certification Objective 6.06 228

DNS Configuration 229

Forwarding DHCP Requests 230

Certification Objective 6.08 232

Secondary Addressing 232

Certification Summary 234

Two-Minute Drill 235

SelfTest 237

7 Configuring Novell IPX 243

IPX Protocol Stack 244

Certification Objective 7.01 244

Certification Objective 7.02 245

IPX Datagram 245

IPX Addressing 246

IPX Routing 247

Certification Objective 7.03 249

IPX Encapsulation Types 249

Ethernet_Ⅱ 250

Ethernet_802.2 251

Ethernet_802.3 251

Ethernet_SNAP 252

Routing with Multiple Frame Types 253

Certification Objective 7.04 257

SAP and RIP 257

SAP 257

RIP 260

SAP and RIP Operation Example 262

Enabling IPX and Configuring the Interfaces 264

Preparation 264

Certification Objective 7.05 264

IPX Configuration 264

Routing Protocols 270

Certification Summary 271

Two-Minute Drill 272

SelfTest 274

8 Apple Talk Configuration 279

AppleTalk Protocol Stack 281

Physical and Data Link Layers 281

Certification Objective 8.01 281

Network Layer 282

Upper-Layer Protocols 283

Certification Objective 8.02 285

AppleTalk Services 285

Certification Objective 8.03 286

AppleTalk Addressing 286

Address Structure 288

Address Assignment 289

AppleTalk Zones 291

Certification Objective 8.04 291

Certification Objective 8.05 293

Apple Talk Routing 293

Certification Objective 8.06 295

AppleTalk Discovery Mode 295

Certification Objective 8.07 296

AppleTalk Configuration 296

Required AppleTalk Commands 296

AppleTalk Filtering 298

Verifying and Monitoring AppleTalk Configurations 302

Certification Summary 305

Two-Minute Drill 306

SelfTest 308

9 Basic Traffic Management with Access Lists 315

Certification Objective 9.01 317

Standard IP Access Lists 317

Extended IP Access Lists 325

Certification Objective 9.02 325

Named Access Lists 328

Verifying IP Access Lists 328

Certification Objective 9.03 328

Certification Objective 9.04 331

Standard IPX Access Lists 331

Certification Objective 9.05 334

IPX SAP Filters 334

Verifying IPX Access List Configuration 339

AppleTalk Access Lists 340

Certification Objective 9.06 340

Certification Summary 345

Two-Minute Drill 346

SelfTest 348

10 Wide Area Networking 353

Certification Objective 10.01 354

Configuring ISDN 354

Configuring ISDN BRI 355

ConfiguringX.25 357

Certification Objective 10.02 357

Configuring ISDN PRI 357

Certification Objective 10.03 361

Configuring Frame Relay 361

Virtual Circuits 363

Error Correction 364

Logical Interfaces 364

Configuring Frame Relay on a Cisco Router 365

Configuring ATM 368

Certification Objective 10.04 368

Certification Objective 10.05 372

Configuring PPP and Multilink PPP 372

PPP Configurations 373

Configuring Multilink PPP 377

Certification Summary 379

Two-Minute Drill 380

SelfTest 382

11 Virtual Local Area Networking(VLAN) 389

Switching and VLANs 391

Certification Objective 11.01 391

Spanning-Tree Protocol and VLANs 397

Certification Objective 11.02 397

Certification Objective 11.03 400

Default VLAN Configuration 400

Certification Objective 11.04 402

Configuring a VLAN Across a Domain 402

Certification Objective 11.05 406

Grouping Switch Ports to VLANs 406

IEEE 802.1Q Trunking 415

Configure ISL Trunking 415

Troubleshooting VLANs 417

Certification Summary 421

Two-Minute Drill 424

SelfTest 427

A SelfTest Answers 433

Chapter 1 Answers 434

Chapter 2 Answers 442

Chapter 3 Answers 450

Chapter 4 Answers 465

Chapter 5 Answers 473

Chapter 6 Answers 482

Chapter 7 Answers 488

Chapter 8 Answers 495

Chapter 9 Answers 504

Chapter 10 Answers 509

Chapter 11 Answers 517

B About the CD 525

CD-ROM Instructions 526

Electronic Book 526

Interactive Self-Study Module 526

C About the Web Site 527

Access Global Knowledge Network 528

What You ll Find There 528

Glossary 529

Index 567