1 Basic Concepts，Network Operation，and Cabling 1
* Objective 1.01 Internetworking Overview 2
·Core 2
·Distribution 3
·Access 3
* Objective 1.02 OSI Structure and Definitions 4
·The Seven OSI Layers 6
Application 6
Presentation 7
Session 7
Transport 7
Network 9
Data Link 10
·Physical 12
* Objective 1.03 Ethernet and Other Media Types 12
·Full/Half Duplex 13
·10/100/1000Mbps 15
* Objective 1.04 Network Devices and Relation Within the Networking Model 15
* Objective 1.05 Cabling the LAN and WAN 18
·Connecting to the Cisco Device 18
·Cabling the LAN 19
·Cabling the WAN 20
* CHECKPOINT 21
·Review Questions 22
·Review Answers 24

2 Introduction to the Cisco Internetwork Operating System 27
* Objective 2.01 Introduction to the Cisco Command Line Interface 28
·CLI Modes 28
* Objective 2.02 The Boot Process of the Cisco Router/Switch 31
·How the Router/Switch Boots by Default 31
·Booting When There Is No Saved Configuration 34
·Changing the Configuration Register to Modify Boot Behavior 36
Register Values Displayed in Hex 37
Components Used During Boot 39
·Configuring Boot System Commands 40
* Objective 2.03 Configuration Using the CLI 41
·Global Configuration Mode 42
·Interface Configuration Mode 42
·Abbreviating Commands 44
·Symbols in the IOS 46
·Line Configuration Mode 47
Setting Passwords 48
Initiating，Suspending，and Ending Telnet Sessions 50
Using ping and traceroute to Check for Connectivity 52
* Objective 2.04 Backup and Restoration of the IOS and Configurations 53
·Saving，Backing Up，and Restoring Configuration Files 54
* CHECKPOINT 58
·Review Questions 59
·Review Answers 61

3 Managing and Updating Cisco Devices 63
* Objective 3.01 Introduction to Cisco Discovery Protocol 64
·CDP Frame Format 65
·CDP Operation 66
* Objective 3.02 Using CDP to Build a Topology Map 69
·Displaying Specific CDP Entries 71
* Objective 3.03 Updating the IOS and Modifying the Configuration Register 73
·Error During Upgrade 74
·Booting from Another Device 76
·Changing Configuration Register 78
Using ROM Monitor to Change the Register 78
Using the config-register Command to Change the Register 80
* Objective 3.04 Backup Strategies 81
* CHECKPOINT 82
·Review Questions 83
·Review Answers 85

4 Catalyst 1900 Switch Operations 87
* Objective 4.01 Three Functions of a Transparent Bridge 88
·Learning 88
·Forwarding and Filtering 90
·Avoiding Loops 92
* Objective 4.02 Spanning Tree Protocol 94
·The Root Bridge 94
·Which Ports to Block 96
Step 1: Determine the Root Bridge 99
Step 2: Determine the Designated Bridges 99
Step 3: Determine the Root Ports 102
Step 4: Determine Which Ports Will Be Forwarding 103
Step 5: Determine Which Ports Will Be Blocking 104
·Spanning Tree Port States 105
* Objective 4.03 The Difference Between a Switch and a Bridge 106
* Objective 4.04 Frame Forwarding Methods of the Catalyst 1900 Switch 107
·Store-and-Forward 107
·Cut-Through 107
·Fragment-Free 108
* Objective 4.05 The Cisco Catalyst 1900 Series of Switches 108
·Understanding Cisco IOS Device Operation 108
·Different Methods of Configuring a Cisco 1900 Switch 110
·The Catalyst 1900 LEDs 110
·Starting a Catalyst 1900 112
·Connecting to and Configuring the Catalyst 1900 112
Using the Command Line Interface and Configuration Modes 113
Viewing Switch Parameters 115
Configuring the Switch from the Command Line 119
* CHECKPOINT 121
·Review Questions 122
·Review Answers 124

5 Virtual Local Area Networks(VLANs) 127
* Objective 5.01 Virtual Local Area Networks(VLANs) 128
·Static VLANs 130
·Dynamic VLANs 131
* Objective 5.02 Trunking 131
·Cisco's Inter-Switch Link(ISL) 133
* Objective 5.03 VLAN Trunking Protocol(VTP) 136
·VTP Modes 139
·VTP Pruning 140
* Objective 5.04 Creating and Configuring VLANs on a Catalyst 1900 141
·Creating the VTP Domain 141
·Creating VLANs 143
·Assigning Ports to a VLAN 145
·Configuring Trunking 148
·Viewing Spanning Tree Protocol Parameters and Settings 149
* CHECKPOINT 151
·Review Questions 151
·Review Answers 153

6 Overview of the TCP/IP Protocol Stack 155
* Objective 6.01 Introduction to the Protocol Stack 156
·The DARPA Model 156
·The Application Layer 157
* Objective 6.02 The DARPA Transport Layer 158
·Transmission Control Protocol(TCP) 159
The Sequence and Acknowledgment Fields 159
Port Numbers 163
The Three-Way Hand shake 164
TCP Windowing 165
·The User Datagram Protocol(UDP) 166
* Objective 6.03 The DARPA Internet Layer 168
·The Internet Protocol(IP) 168
The IP Datagram 168
·The Address Resolution Protocol(ARP) 170
·Reverse Address Resolution Protocol(RARP) 171
·Internet Control Message Protocol(ICMP) 171
* Objective 6.04 IP Addressing 173
·The IP Address 173
·IP Address Classification 175
·The Three Fields of IP Addresses 177
·Subnetting 181
The Subnet Mask 181
Complex Subnet Masking 183
Recognizing IP Addresses and Subnets 186
·Broadcasts 187
The Local Broadcast 187
The Directed Broadcast 187
* Objective 6.05 Configuring Cisco Devices to Use IP 188
·Assigning IP Addresses to Router Interfaces 188
The/Notation 191
·Connecting a Cisco Router to a Catalyst Switch 192
Configuring the Router for Inter-VLAN Routing 192
·Using Hostnames with a Cisco IOS device 194
Configuring Hostnames on a Cisco IOS Device 194
Working with DNS Servers 195
The ip domain-lookup Command 196
Viewing the Hostname to IP Address Translations 197
* CHECKPOINT 198
·Review Questions 199
·Review Answers 201

7 Basic IP Routing Protocols 203
* Objective 7.01 Static Routes 204
·Configuring Static Routes 204
·The Default Route 207
* Objective 7.02 Dynamic Routes 208
·Link State and Distance Vector 209
·Autonomous System 210
·Routing Metrics 210
·Administrative Distance 212
* Objective 7.03 Distance Vector and Link State Routing 215
·The Distance Vector Algorithm 215
·Routing Loops 217
·Solutions for Routing Loops 219
Defining a Maximum Metric 220
Split Horizon 221
Holddown Timers 221
Triggered Updates 222
Route Poisoning 222
·Link State Routing Protocols 222
* Objective 7.04 Routing Information Protocol(RIP) 224
·Configuring RIP 224
·Verifying RIP 226
The show ip route Command 226
The show ip protocols Command 227
When a Network Goes Down 228
RIP Load Balancing 230
The debug ip rip Command 231
* Objective 7.05 Interior Gateway Routing Protocol(IGRP) 232
·The Composite Metric 232
·Configuring IGRP 233
·Verifying IGRP 234
Debug IP IGRP Events and Transactions 237
Load Balancing with IGRP 239
·IP Classless 240
* CHECKPOINT 242
·Review Questions 243
·Review Answers 245

8 IP Access Lists 247
* Objective 8.01 Access List Introduction and Operation 248
·Rules of the Road 248
·Uses for Access Lists 249
·Access List Structure and Operation 251
Access List Processing 252
·How Access Lists Work 253
* Objective 8.02 Standard IP Access Lists 256
·Creating a Standard IP Access List 256
·Applying the Standard IP Access List to a Router Interface 259
·Verifying the Operation of a Standard IP Access List 261
Create an Access List to Block Traffic from a Single Host Address 264
* Objective 8.03 Extended IP Access Lists 267
·Creating an Extended IP Access List 267
Creating an Extended IP Access List that Blocks Web Access from a Specific Subnet 267
·Applying the Extended IP Access List to a Router Interface 270
·Verifying the Operation of an Extended IP Access List 270
Creating an Extended IP Access List that Blocks Telnet Access from a Single Host Address 272
* Objective 8.04 Named IP Access Lists 274
·Creating a Named IP Access List 274
* Objective 8.05 The access-class Command and Router VTY Access 275
·Creating and Applying the access-class Command 276
* CHECKPOINT 277
·Review Questions 278
·Review Answers 280

9 Configuring Cisco ISO Devices for IPX 283
* Objective 9.01 Novell's Network Operating System 284
·Client/Server Operations 284
* Objective 9.02 Novell's IPX 285
·Packet Encapsulation 286
Ethernet Version 2 Frames 287
Ethernet RAW or Novell-Ether 287
The IEEE 802.3/802.2 Header 288
Ethernet SNAP 289
Other Media Types 289
·Connecting to the Server 291
What If There Is No Local Server? 291
·Connecting to Resources 292
Sequenced Packet Exchange 293
NetWare Core Protocol 293
Service Advertising Protocol 293
* Objective 9.03 Novell's IPX and Cisco IOS Devices 294
·IPX RIP 294
·Configuring IPX and IPX RIP 295
IPX Documentation 295
Configuring the Router for IPX Routing 295
Configuring the Router Interfaces 296
Example Configuration 297
Verifying IPX Addresses 300
Verifying IPX Routing 301
Testing Connectivity 304
* Objective 9.04 Restricting IPX Traffic with Access Lists 304
·Standard IPX Access Lists 304
Extended IPX Access Lists 305
·IPX SAP Filters 306
An Example SAP Filter 307
* CHECKPOINT 309
·Review Questions 309
·Review Answers 311

10 Serial Point-to-Point Connections 313
* Objective 10.01 Overview of WAN Connectivity 314
·How WANs Are Different from LANs 314
* Objective 10.02 HDLC and Synchronous Serial Connections 319
* Objective 10.03 Dialup Using Point-to-Point Protocol 320
·LCP and NCP 320
PPP Negotiation 322
PAP Authentication 322
CHAP Authentication 322
* Objective 10.04 Configuring Serial Connections Using HDLC and PPP 323
·Configuring HDLC 324
·Configuring PPP 325
* CHECKPOINT 328
·Review Questions 329
·Review Answers 331

11 ISDN BRI Connections 333
* Objective 11.01 The Importance of ISDN 334
* Objective 11.02 ISDN Channels 335
* Objective 11.03 Terminology， Reference Points， and Cabling 336
·Reference Points and Devices Defined 337
S/T and U Interfaces 338
Cabling ISDN 339
ITU ISDN D Channel Protocols 340
ISDN B Channel Protocols 341
* Objective 11.04 Core Configuration Commands 342
·Configuring ISDN 342
* Objective 11.05 Dial-on-Demand Routing 345
* CHECKPOINT 349
·Review Questions 350
·Review Answers 352

12 Frame Relay Connections 355
* Objective 12.01 Introduction and Frame Relay Terminology 356
·Congestion Avoidance 358
·Multiaccess 358
* Objective 12.02 Frame Relay Address Mapping 360
·Data Link Addressing 361
Manual Mapping vs. Dynamic 365
·Frame Relay States 366
* Objective 12.03 Non-Broadcast Multiaccess Networks 367
·Dealing with Split Horizon 369
Point-to-Point Subinterfaces Prevent Split Horizon 371
Configuring Point-to-Point Subinterfaces 372
·Multiaccess Networks 373
Configuring Multipoint Frame Relay Connections 374
* Objective 12.04 Verifying Frame Relay Connections 375
·The show interface serial Command 375
·The show frame-relay map Command 377
·The show frame-relay pvc Command 377
·The show frame-relay lmi Command 378
* CHECKPOINT 379
·Review Questions 380
·Review Answers 381

Appendix A: About the CD-ROM 383
·Mike Meyers' Certification Passport CD-ROM Instructions 383
·System Requirements 383
·Technical Support 384

Appendix B: Career Flight Path 385
·Cisco Career Certifications 385
·Cisco Certified Internetworking Expert(CCIE) Program 386
·Where Do You Start? 386

Index 389

本书是针对CCNA考试(考试号640-507)的参考书。全书共分为12章，分别介绍了基本概念、Cisco IOS、管理和升级Cisco装置、Catalyst 1900交换操作、虚拟局域网、TCP/IP协议栈、基本IP路由协议、IP访问列表、为IPX配置Cisco IOS、串行的点对电连接、ISDN BRI 连接、帧中继连接等。
本书由具有丰富的CCNA考试培训经验的专家编写，是参加CCNA考试人员的**考试教材。