CCNP：Remote Access 学习指南 英文原版PDF电子书下载

Chapter 1 Cisco Solutions for Remote Access 3

What Is Remote Access? 3

WAN Connection Types 3

WAN Encapsulation Protocols 14

Selecting a WAN Protocol 17

Choosing Remote Connection Cisco Products 22

Fixed Interfaces 23

Product Selection Tools 24

Modular Interfaces 24

Cabling and Assembling the WAN 25

Internetworking Overview and Remote Access Interface Options 25

Identifying Company Site Equipment 28

Verifying a Network Installation 33

Summary 36

Key Terms 37

Commands in This Chapter 37

Hands-on Labs 38

Review Questions 38

Written Lab 38

Answers to Written Lab 41

Answers to Review Questions 41

Chapter 2 Asynchronous Connections 43

Asynchronous Modems 44

Signaling and Cabling 48

Modulation Standards 49

Configuring Asynchronous Modem Connections 51

Automatic Configuration 52

Manual Configuration 56

Summary 58

Key Terms 59

Commands in This Chapter 59

Written Lab 60

Hands-on Lab 61

Review Questions 61

Answers to Written Lab 64

Answers to Review Questions 64

Chapter 3 Point-to-Point Protocol 67

PPP Overview and Architecture 68

The Flag Field 69

The Control Field 70

The Protocol Field 70

The Address Field 70

The Information Field 71

The Frame Check Sequence (FCS) Field 71

Configuring Access Servers 71

Dedicated or Interactive PPP 72

Interface Addressing Options for Local Devices 72

Configuring PPP 72

PAP and CHAP Authentication 79

Password Authentication Protocol (PAP) 80

Challenge Handshake Authentication Protocol (CHAP) 80

PPP Callback 82

PPP Compression and Multilink 83

Compression Configuration 83

Multilink Configuration 85

Verifying and Troubleshooting PPP 87

The debug ppp authentication Command 87

The debug ppp negotiation Command 88

The debug ppp packet Command 91

Summary 94

Key Terms 95

Commands in This Chapter 95

Written Lab 96

Hands-on Lab 97

Lab 3.1: PPP and DHCP Configuration 97

Review Questions 98

Answers to Review Questions 101

Answers to Written Lab 101

Chapter 4 Using Microsoft Windows 95/98 105

Reasons to Use Dial-Up Networking 106

Configuring Dial-Up Networking with Windows 95/98 107

Configuring a Dial-Up Connection Client 108

Dial-Up Networking Application 108

Make New Connection Wizard 109

Connection Properties 111

Additional Configuration Options 118

Launch Terminal Windows 119

Lock DTE Speed 119

Verifying a Dial-Up Connection 120

Summary 121

Key Terms 121

Commands in This Chapter 121

Written Lab 121

Review Questions 122

Answers to Written Lab 125

Answers to Review Questions 125

Chapter 5 Integrated Services Digital Network (ISDN) 127

What Is Integrated Services Digital Network (ISDN)? 129

ISDN Line Options 130

Basic Rate Interface (BRI) 131

Primary Rate Interface (PRI) 132

ISDN Function Groups 133

ISDN Reference Points 134

ISDN Protocols 136

LAPD Frames 136

Layer 2 Negotiation 139

ISDN Call Setup and Teardown 141

The Old Way versus the New Way 143

ISDN Configuration 143

Authentication 146

Password Authentication Protocol (PAP) 146

Challenge-Handshake Authentication Protocol (CHAP) 148

The Authentication Process 149

Dial-on-Demand Routing (DDR) 150

Configuring DDR 150

Configuring the Dialer Information 151

Configuring the Static Routes 151

Specifying Interesting Traffic 151

Optional Commands 153

DDR with Access Lists 154

Verifying the ISDN Operation 154

Dial Backup 155

Setting Up Dial Backup 155

Testing the Backup 157

Bandwidth on Demand 163

Channelized T1/E1 (PRI) 164

Configuring ISDN PRI 165

Configuring E1 166

Summary 167

Key Terms 167

Commands in This Chapter 167

Written Lab 169

Hands-on Labs 170

Lab 5.1: DDR 170

Lab 5.2: Configuring PRI and BRI 172

Review Questions 175

Answers to Written Lab 177

Answers to Review Questions 179

Chapter 6 Cisco 700 Series 181

700 Series Overview 182

Features of the 700 Series 184

Routing and WAN Features 186

ISDN and Telephony Features 189

Profiles 190

Cisco 700 Help 191

Configuring the 700 Series 191

Configuration Output 197

ISDN Switch Type Commands 198

System-Level Configuration Commands 198

LAN Profile 199

Creating a User Profile 200

PPP Callback 200

IP Traffic with CHAP between a 700 Series and an IOS-based Router 201

Dynamic Host Control Protocol 203

Port Address Translation (PAT) 204

Troubleshooting the 700 Series 205

Monitoring IP Routing 206

Summary 207

Key Terms 207

Commands in This Chapter 207

Written Lab 210

Hands-on Lab 211

Review Questions 212

Answers to Review Questions 215

Answers to Written Lab 215

Chapter 7 X.25 and LAPB 219

The Basics of X.25 220

X.25 at the Network Layer 221

X.25 and LAPB at the Data Link Layer 225

X.25 at the Physical Layer 227

X.25 Virtual Circuits 230

Configuring X.25 231

Configuring X.25 Encapsulation Types 231

Configuring an SVC 234

Configuring a PVC 236

Configuring an X.25 Virtual Circuit Range 237

Default Inbound and Outbound Packet Sizes 238

Configuring Window Sizes 239

Verifying X.25 Configuration 239

X.25 Troubleshooting 240

The Show Interface Serial Command 240

Debug Commands 241

Key Terms 242

Misconfigured x25 map Commands 242

Summary 242

Commands in This Chapter 243

Written Lab 244

Hands-on Lab 244

Review Questions 245

Answers to Written Lab 248

Answers to Review Questions 248

Chapter 8 Frame Relay 251

What Is Frame Relay? 252

A Brief History of Frame Relay 253

Frame Relay Virtual Circuits 253

Switched Virtual Circuits 254

Permanent Virtual Circuits 255

Data Link Connection Identifier (DLCI) 255

DLCI Mapping 256

Frame Relay Local Management Interface (LMI) 258

Configuring Frame Relay 259

Factors Affecting Performance 260

Frame Relay Congestion Control 260

Congestion Handling by Frame Relay Switches 261

Congestion Handling by Routers 262

Point-to-Point and Multipoint Interfaces 263

Verifying Frame Relay 266

The show interface Command 266

The show frame-relay pvc Command 267

The debug frame-relay lmi Command 268

The show frame-relay lmi Command 268

The show frame-relag map Command 268

Frame Relay Switching 269

Frame Relay Switching Commands 270

Frame Relay Traffic Shaping 272

Configuring Traffic Shaping 273

Summary 274

Key Terms 274

Commands in This Chapter 275

Written Lab 276

Lab 8.1: Configuring Frame Relay with Subinterfaces 277

Hands-on Labs 277

Lab 8.2: Frame Relay Traffic Shaping 278

Review Questions 279

Answers to Written Lab 282

Answers to Review Questions 283

Chapter 9 Queuing and Compression 285

Queuing 286

Traffic Prioritization 287

Queuing Policy 287

IOS Queuing Options 288

Weighted Fair Queuing 289

Priority Queuing 292

Custom Queuing 295

Compression 301

TCP Header Compression 302

Payload Compression 303

Link Compression 303

Compression Considerations 304

Summary 305

Written Lab 306

Key Terms 306

Commands in This Chapter 306

Hands-on Lab 307

Review Questions 308

Answers to Written Lab 312

Answers to Review Questions 312

Chapter 10 Network Address Translation (NAT) and Port Address Translation (PAT) 315

Understanding Network Address Translation (NAT) 317

NAT Terminology 317

How NAT Works 318

The Advantages of NAT 319

The Disadvantages of NAT 320

NAT Traffic Types 320

NAT Operations 321

Translating Inside Local Addresses 321

Overloading Inside Global Addresses 323

Using TCP Load Distribution 324

Overlapping Networks 325

Configuring NAT 326

Configuring Static NAT 327

Configuring Dynamic NAT, Inside Global Address Overloading. and TCP Load Distribution 328

Configuring NAT to Perform Overlapping Address Translation 329

Verifying NAT Configuration 331

Troubleshooting NAT 332

Clearing NAT Translation Entries 332

Port Address Translation (PAT) 333

Disadvantages to PAT 333

Configuring PAT 334

Monitoring PAT 335

Summary 336

Key Terms 336

Commands in This Chapter 337

Written Lab 337

Hands-on Lab 338

Review Questions 339

Answers to Written Lab 342

Answers to Review Questions 342

Chapter 11 Centralized Security in Remote Access Networks 345

Security Terminology 346

Cisco Access Control Solutions 347

CiscoSecure 348

Authentication, Authorization，and Accounting 349

How AAA Works 350

Router Access Modes 351

Character Mode Connections 351

Packet Mode Connections 352

Configuring AAA 353

Authentication Configuration 354

Authorization Configuration 356

Accounting Configuration 359

Virtual Profiles 360

Summary 361

Key Terms 361

Commands in This Chapter 361

Written Lab 364

Hands-on Lab 364

Lab 11.1 Configuring TACACS+ 364

Review Questions 365

Answers to Written Lab 368

Answers to Review Questions 368

Appendix A Practice Exam 371

Practice Exam Questions 372

Answers to Practice Exam 379

Appendix B Commands in This Study Guide 383

Appendix C References 399

Operating Systems 400

WAN Technologies 400

Web-Based Resources 400

Other Resources 401

Certification Study Groups 401

Users Groups 402

Standards Organizations 402

Job Search Web Sites 402

Hands-on Schooling 403

RFCs 403

Glossary 405