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1 Introduction to Internetworking1

Certification Objective 1.012

The Internetworking Model2

Foreword3

Network Evolution3

The OSI Model4

About the Contributors5

Encapsulation7

Certification Objective 1.027

Physical and Data Link Layers7

Acknowledgments9

DIX and 802.3 Ethernet9

802.5 Token Ring11

ANSI FDDI13

MAC Addresses14

Interfaces15

Wide Area Network Services19

Preface21

Introduction25

Certification Objective 1.0328

Network Layer and Path Determination28

Layer 3 Addresses28

Routed Protocols vs. Routing Protocols29

Reliability30

Transport Layer30

Certification Objective 1.0430

Routing Algorithms and Metrics30

Windowing31

Certification Objective 1.0531

Upper-Layer Protocols31

Certification Objective 1.0631

Cisco Routers, Switches, and Hubs31

Certification Objective 1.0734

Configuring a Cisco Switch and Hub34

Certification Summary35

Two-Minute Drill38

SelfTest41

2 Getting Started with Cisco IOS Software47

Certification Objective 2.0148

User Interface48

User and Privileged Modes48

The Command-Line Interface50

Certification Objective 2.0255

Router Basics55

Router Elements55

Router Modes56

Examine the Router Status58

Cisco Discovery Protocol61

Remote Access to a Router62

Basic Testing63

Debug65

Routing Basics66

Certification Objective 2.0370

Initial Configuration70

Virtual Configuration Register Settings74

Startup Sequence--Boot System Commands76

Configuring to/from a TFTP Server77

Certification Objective 2.0480

AutoInstalling Configuration Data80

Certification Summary81

Two-Minute Drill82

SelfTest85

3 IP Addressing91

Structure of an IP Address93

Certification Objective 3.0193

Classes of IP Addresses93

Special Cases: Loopback, Broadcast, and Network Addresses95

Identifying Address Classes96

Importance of the Subnet Mask98

Converting between Binary and Decimal99

Certification Objective 3.02104

Subnetting and Subnet Masks104

Purpose of Subnetting104

Adding Bits to the Default Subnet Mask105

Certification Objective 3.03107

Subnet Planning107

Choosing a Subnet Mask107

Impact on the Number of Hosts107

Determining Address Ranges for Each Subnet108

Certification Objective 3.04110

Complex Subnetting110

Crossing Octet Boundaries with Subnet Bits110

Variable-Length Subnet Masking111

Supernetting112

Certification Objective 3.05114

Configuring IP Addresses with Cisco IOS114

Setting IP Addresses and Parameters114

Host Name to Address Mappings116

Using Ping117

Using IP TRACE and Telnet118

Certification Summary119

Two-Minute Drill120

SelfTest123

4 TCP/IP Protocol Suite133

Certification Objective 4.01135

Application Layer Services135

Certification Objective 4.02136

Presentation and Session Layer Services136

Remote Procedure Calls136

Sockets136

NetBIOS137

Transport Layer Interface137

Certification Objective 4.03138

Detailed Protocol Structure138

Transport Layer138

TCP140

UDP143

Certification Objective 4.04145

Network Layer145

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 4.05150

Operating System Commands150

UNIX151

32-bit Windows153

Certification Summary154

Two-Minute Drill155

SelfTest158

5 IP Routing Protocols165

Certification Objective 5.01166

Why Routing Protocols?166

Theory171

Certification Objective 5.02175

Static Routes and Dynamic Routes175

Default Routes181

Certification Objective 5.03181

Certification Objective 5.04183

Link State vs. Distance Vector183

Distance Vector Routing Protocols183

Link-State Routing Protocols189

Interior vs. Exterior Gateway Protocols191

Certification Objective 5.05193

RIP193

IGRP197

Certification Objective 5.06197

EIGRP200

Certification Objective 5.07202

OSPF202

Certification Summary204

Two-Minute Drill206

SelfTest209

6 IP Configuration217

Certification Objective 6.01218

IP Configuration Commands218

Configuring Static Routes219

Certification Objective 6.02219

Certification Objective 6.03223

Configuring Default Routes223

Certification Objective 6.04223

Configuring RIP Routing223

Certification Objective 6.05224

Configuring IGRP Routing224

Certification Objective 6.07228

DNS and DHCP Configuration228

IP Host Tables228

Certification Objective 6.06228

DNS Configuration229

Forwarding DHCP Requests230

Certification Objective 6.08232

Secondary Addressing232

Certification Summary234

Two-Minute Drill235

SelfTest237

7 Configuring Novell IPX243

IPX Protocol Stack244

Certification Objective 7.01244

Certification Objective 7.02245

IPX Datagram245

IPX Addressing246

IPX Routing247

Certification Objective 7.03249

IPX Encapsulation Types249

Ethernet_Ⅱ250

Ethernet_802.2251

Ethernet_802.3251

Ethernet_SNAP252

Routing with Multiple Frame Types253

Certification Objective 7.04257

SAP and RIP257

SAP257

RIP260

SAP and RIP Operation Example262

Enabling IPX and Configuring the Interfaces264

Preparation264

Certification Objective 7.05264

IPX Configuration264

Routing Protocols270

Certification Summary271

Two-Minute Drill272

SelfTest274

8 Apple Talk Configuration279

AppleTalk Protocol Stack281

Physical and Data Link Layers281

Certification Objective 8.01281

Network Layer282

Upper-Layer Protocols283

Certification Objective 8.02285

AppleTalk Services285

Certification Objective 8.03286

AppleTalk Addressing286

Address Structure288

Address Assignment289

AppleTalk Zones291

Certification Objective 8.04291

Certification Objective 8.05293

Apple Talk Routing293

Certification Objective 8.06295

AppleTalk Discovery Mode295

Certification Objective 8.07296

AppleTalk Configuration296

Required AppleTalk Commands296

AppleTalk Filtering298

Verifying and Monitoring AppleTalk Configurations302

Certification Summary305

Two-Minute Drill306

SelfTest308

9 Basic Traffic Management with Access Lists315

Certification Objective 9.01317

Standard IP Access Lists317

Extended IP Access Lists325

Certification Objective 9.02325

Named Access Lists328

Verifying IP Access Lists328

Certification Objective 9.03328

Certification Objective 9.04331

Standard IPX Access Lists331

Certification Objective 9.05334

IPX SAP Filters334

Verifying IPX Access List Configuration339

AppleTalk Access Lists340

Certification Objective 9.06340

Certification Summary345

Two-Minute Drill346

SelfTest348

10 Wide Area Networking353

Certification Objective 10.01354

Configuring ISDN354

Configuring ISDN BRI355

ConfiguringX.25357

Certification Objective 10.02357

Configuring ISDN PRI357

Certification Objective 10.03361

Configuring Frame Relay361

Virtual Circuits363

Error Correction364

Logical Interfaces364

Configuring Frame Relay on a Cisco Router365

Configuring ATM368

Certification Objective 10.04368

Certification Objective 10.05372

Configuring PPP and Multilink PPP372

PPP Configurations373

Configuring Multilink PPP377

Certification Summary379

Two-Minute Drill380

SelfTest382

11 Virtual Local Area Networking(VLAN)389

Switching and VLANs391

Certification Objective 11.01391

Spanning-Tree Protocol and VLANs397

Certification Objective 11.02397

Certification Objective 11.03400

Default VLAN Configuration400

Certification Objective 11.04402

Configuring a VLAN Across a Domain402

Certification Objective 11.05406

Grouping Switch Ports to VLANs406

IEEE 802.1Q Trunking415

Configure ISL Trunking415

Troubleshooting VLANs417

Certification Summary421

Two-Minute Drill424

SelfTest427

A SelfTest Answers433

Chapter 1 Answers434

Chapter 2 Answers442

Chapter 3 Answers450

Chapter 4 Answers465

Chapter 5 Answers473

Chapter 6 Answers482

Chapter 7 Answers488

Chapter 8 Answers495

Chapter 9 Answers504

Chapter 10 Answers509

Chapter 11 Answers517

B About the CD525

CD-ROM Instructions526

Electronic Book526

Interactive Self-Study Module526

C About the Web Site527

Access Global Knowledge Network528

What You ll Find There528

Glossary529

Index567