CCNA通行证 Exam640-507 英文版2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载

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Objective 6.1

Objective 10.1

Objective 3.1

Dbjective 12.1

Objective 2.1

Objective 9.1

Objective 7.1

Contents1

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Objective 5.1

Objective 8.1

Objective 4.1

Objective 1.1

1 Basic Concepts,Network Operation,and Cabling1

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Objective 4.2

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Objective 3.2

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Objective 10.2

Internetworking Overview2

Core2

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Objective 1.2

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Objective 2.3

Objective 6.3

Objective 10.3

Access3

Objective 8.3

Distribution3

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Objective 9.3

Objective 1.3

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Objective 7.3

Objective 3.3

Objective 4.4

Objective 3.4

Objective 2.4

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Objective 5.4

OSI Structure and Definitions4

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Objective 6.5

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Objective 1.5

Application6

The Seven OSI Layers6

Presentation7

Session7

Transport7

Network9

Data Link10

Physical12

Ethernet and Other Media Types12

Full/Half Duplex13

10/100/1000 Mbps15

Network Devices and Relation Within the Networking Model15

Connecting to the Cisco Device18

Cabling the LAN and WAN18

Cabling the LAN19

Cabling the WAN20

CHECKPOINT21

Review Questions22

Review Answers24

2 Introduction to the Cisco Internetwork Operating System27

Introduction to the Cisco Command Line Interface28

CLI Modes28

The Boot Process of the Cisco Router/Switch31

How the Router/Switch Boots by Default31

Booting When There Is No Saved Configuration34

Changing the Configuration Register to Modify Boot Behavior36

Register Values Displayed in Hex37

Components Used During Boot39

Configuring Boot System Commands40

Configuration Using the CLI41

Global Configuration Mode42

Interface Configuration Mode42

Abbreviating Commands44

Symbols in the IOS46

Line Configuration Mode47

Setting Passwords48

Initiating,Suspending,and Ending Telnet Sessions50

Using ping and traceroute to Check for Connectivity52

Backup and Restoration of the IOS and Configurations53

Saving,Backing Up,and Restoring Configuration Files54

CHECKPOINT58

Review Questions59

Review Answers61

3 Managing and Updating Cisco Devices63

Introduction to Cisco Discovery Protocol64

CDP Frame Format65

CDP Operation66

Using CDP to Build a Topology Map69

Displaying Specific CDP Entries71

Updating the IOS and Modifying the Configuration Register73

Error During Upgrade74

Booting from Another Device76

Changing Configuration Register78

Using ROM Monitor to Change the Register78

Using the config-register Command to Change the Register80

Backup Strategies81

CHECKPOINT82

Review Questions83

Review Answers85

4 Catalyst 1900 Switch Operations87

Three Functions of a Transparent Bridge88

Learning88

Forwarding and Filtering90

Avoiding Loops92

Spanning Tree Protocol94

The Root Bridge94

Which Ports to Block96

Step 1:Determine the Root Bridge99

Step 2:Determine the Designated Bridges99

Step 3:Determine the Root Ports102

Step 4:Determine Which Ports Will Be Forwarding103

Step 5:Determine Which Ports Will Be Blocking104

Spanning Tree Port States105

The Difference Between a Switch and a Bridge106

Cut-Through107

Store-and-Forward107

Frame Forwarding Methods of the Catalyst 1900 Switch107

Understanding Cisco IOS Device Operation108

Fragment-Free108

The Cisco Catalyst 1900 Series of Switches108

Different Methods of Configuring a Cisco 1900 Switch110

The Catalyst 1900 LEDs110

Starting a Catalyst 1900112

Connecting to and Configuring the Catalyst 1900112

Using the Command Line Interface and Configuration Modes113

Viewing Switch Parameters115

Configuring the Switch from the Command Line119

CHECKPOINT121

Review Questions122

Review Answers124

5 Virtual LoCal Area Networks(VLANs)127

Virtual Local Area Networks(VLANs)128

Static VLANs130

Dynamic VLANs131

TrunKing131

Cisco's Inter-Switch Link(ISL)133

VLAN Trunking Protocol(VTP)136

VTP Modes139

VTP Pruning140

Creating and Configuring VLANs on a Catalyst 1900141

Creating the VTP Domain141

Creating VLANs143

Assigning Ports to a VLAN145

Configuring Trunking148

Viewing Spanning Tree Protocol Parameters and Settings149

Review Questions151

CHECKPOINT151

Review Answers153

6 Overview of the TCP/IP Protocol Stack155

Introduction to the Protocol Stack156

The DARPA Model156

The Application Layer157

The DARPA Transport Layer158

Transmission Control Protocol(TCP)159

The Sequence and Acknowledgment Fields159

Port Numbers163

The Three-Way Handshake164

TCP Windowing165

The User Datagram Protocol(UDP)166

The IP Datagram168

The DARPA Internet Layer168

The Internet Protocol(IP)168

The Address Resolution Protocol(ARP)170

Internet Control Message Protocol(ICMP)171

Reverse Address Resolution Protocol(RARP)171

The IP Address173

IP Addressing173

IP Address Classification175

The Three Fields of IP Addresses177

The Subnet Mask181

Subnetting181

Complex Subnet Masking183

Recognizing IP Addresses and Subnets186

The Local Broadcast187

Broadcasts187

The Directed Broadcast187

Assigning IP Addresses to Router Interfaces188

Configuring Cisco Devices to Use IP188

The/Notation191

Connecting a Cisco Router to a Catalyst Switch192

Configuring the Router for Inter-VLAN Routing192

Configuring Hostnames on a Cisco IOS Device194

Using Hostnames with a Cisco IOS Device194

Working with DNS Servers195

The ip domain-lookup Command196

Viewing the Hostname to IP Address Translations197

CHECKPOINT198

Review Questions199

Review Answers201

7 Basic IP Routing Protocols203

Configuring Static Routes204

Static Routes204

The Default Route207

Dynamic Routes208

Link State and Distance Vector209

Routing Metrics210

Autonomous System210

Administrative Distance212

The Distance Vector Algorithm215

Distance Vector and Link State Routing215

Routing Loops217

Solutions for Routing Loops219

Defining a Maximum Metric220

Holddown Timers221

Split Horizon221

Triggered Updates222

Route Poisoning222

Link State Routing Protocols222

Configuring RIP224

Routing Information Protocol(RIP)224

The show ip route Command226

Verifying RIP226

The show ip protocols Command227

When a Network Goes Down228

RIP Load Balancing230

The debug iP rip Command231

Interior Gateway Routing Protocol(IGRP)232

The Composite Metric232

Configuring IGRP233

Verifying IGRP234

Debug IP IGRP Events and Transactions237

Load Balancing with IGRP239

IP Classless240

CHECKPOINT242

Review Questions243

Review Answers245

8 IP Access Lists247

Rules of the Road248

Access List Introduction and Operation248

Uses for Access Lists249

Access List Structure and Operation251

Access List Processing252

How Access Lists Work253

Standard IP Access Lists256

Creating a Standard IP Access List256

Applying the Standard IP Access List to a Router Interface259

Verifying the Operation of a Standard IP Access List261

Create an Access List to Block Traffic from a Single Host Address264

Creating an Extended IP Access List that Blocks Web Access from a Specific Subnet267

Creating an Extended IP Access List267

Extended IP Access Lists267

Applying the Extended IP Access List to a Router Interface270

Verifying the Operation of an Extended IP Access List270

Telnet Access from a Single Host Address272

Creating an Extended IP Access List that Blocks272

Named IP Access Lists274

Creating a Named IP Access List274

The access-class Command and Router VTY Access275

Creating and Applying the access-class Command276

CHECKPOINT277

Review Questions278

Review Answers280

9 Configuring Cisco IOS Devices for IPX283

Novell's Network Operating System284

Client/Server Operations284

Novell's IPX285

Packet Encapsulation286

Ethernet Version 2 Frames287

Ethernet RAW or Novell-Ether287

The IEEE 802.3/802.2 Header288

Ethernet SNAP289

Other Media Types289

Connecting to the Server291

What If There Is No Local Server?291

Connecting to Resources292

Sequenced Packet Exchange293

Service Advertising Protocol293

NetWare Core Protocol293

IPX RIP294

Novell's IPX and Cisco IOS Devices294

Configuring the Router for IPX Routing295

IPX Documentation295

Configuring IPX and IPX RIP295

Configuring the Router Interfaces296

Example Configuration297

Verifying IPX Addresses300

Verifying IPX Routing301

Restricting IPX Traffic with Access Lists304

Testing Connectivity304

Standard IPX Access Lists304

Extended IPX Access Lists305

IPX SAP Filters306

An Example SAP Filter307

Review Questions309

CHECKPOINT309

Review Answers311

10 Serial Point-to-Point Connections313

How WANs Are Different from LANs314

Overview of WAN Connectivity314

HDLC and Synchronous Serial Connections319

Dialup Using Point-to-Point Protocol320

LCP and NCP320

CHAP Authentication322

PAP Authentication322

PPP Negotiation322

Configuring Serial Connections Using HDLC and PPP323

Configuring HDLC324

Configuring PPP325

CHECKPOINT328

Review Questions329

Review Answers331

11 ISDN BRI Connections333

The Importance of ISDN334

ISDN Channels335

Terminology,Reference Points,and Cabling336

Reference Points and Devices Defined337

S/T and U Interfaces338

Cabling ISDN339

ITU ISDN D Channel Protocols340

ISDN B Channel Protocols341

Configuring ISDN342

Core Configuration Commands342

Dial-on-Demand Routing345

CHECKPOINT349

Review Questions350

Review Answers352

12 Frame Relay Connections355

Introduction and Frame Relay Terminology356

Multiaccess358

Congestion Avoidance358

Frame Relay Address Mapping360

Data Link Addressing361

Manual Mapping vs.Dynamic365

Frame Relay States366

Non-Broadcast Multiaccess Networks367

Dealing with Split Horizon369

Point-to-Point Subinterfaces Prevent Split Horizon371

Configuring Point-to-Point Subinterfaces372

Multiaccess Networks373

Configuring Multipoint Frame Relay Connections374

Verifying Frame Relay Connections375

The show interface serial Command375

The show frame-relay pvc Command377

The show frame-relay map Command377

The show frame-relay Imi Command378

CHECKPOINT379

Review Questions380

Review Answers381

Appendix A:About the CD-ROM383

Mike Meyers'Certification Passport CD-ROM Instructions383

System Requirements383

Technical Support384

Appendix B:Career Flight Path385

Cisco Career Certifications385

Cisco Certified Internetworking Expert(CCIE)Program386

Where Do You Start?386

Index389