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Networking Essentials: Interconnecting the LANs
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Table of Contents
Introduction xxi
CHAPTER 1 Introduction to Computer Networks 2
Chapter Outline 3
Objectives 3
Key Terms 3
1-1 Introduction 5
1-2 Network Topologies 7
Section 1-2 Review 12
Test Your Knowledge 12
1-3 The OSI Model 13
Section 1-3 Review 15
Test Your Knowledge 16
1-4 The Ethernet LAN 17
IP Addressing 21
Section 1-4 Review 23
Test Your Knowledge 23
1-5 Home Networking 24
Securing the Home Network 35
IP Addressing in the Home Network 36
Section 1-5 Review 38
Test Your Knowledge 39
1-6 Assembling An Office LAN 40
Section 1-6 Review 45
Test Your Knowledge 46
1-7 Testing and Troubleshooting a LAN 47
Section 1-7 Review 50
Test Your Knowledge 50
Summary 51
Questions and Problems 51
Certification Questions 60
CHAPTER 2 Physical Layer Cabling: Twisted Pair 64
CHAPTER OUTLINE 65
OBJECTIVES 65
KEY TERMS 65
2-1 Introduction 67
2-2 Structured Cabling 68
Horizontal Cabling 72
Section 2-2 Review 74
Test Your Knowledge 75
2-3 Unshielded Twisted-Pair Cable 76
Shielded Twisted-Pair Cable 78
Section 2-3 Review 79
Test Your Knowledge 79
2-4 Terminating CAT6/5E/5 UTP Cables 80
Computer Communication 82
Straight-through and Crossover Patch Cables 84
Section 2-4 Review 92
Test Your Knowledge 93
2-5 Cable Testing and Certification 94
Section 2-5 Review 98
Test Your Knowledge 98
2-6 10 Gigabit Ethernet over Copper 99
Overview 99
Alien Crosstalk 100
Signal Transmission 101
Section 2-6 Review 102
Test Your Knowledge 102
2-7 Troubleshooting Cabling Systems 103
Installation 103
Cable Stretching 104
Cable Failing to Meet Manufacturer Specifications 104
CAT5e Cable Test Examples 105
Section 2-7 Review 111
Test Your Knowledge 111
Summary 113
Questions and Problems 113
Certification Questions 122
CHAPTER 3 Physical Layer Cabling: Fiber Optics 126
Chapter Outline 127
Objectives 127
Key Terms 127
3-1 Introduction 128
3-2 The Nature of Light 131
Graded-Index Fiber 135
Single-Mode Fibers 135
Section 3-2 Review 137
Test Your Knowledge 137
3-3 Fiber Attenuation and Dispersion 137
Attenuation 138
Dispersion 139
Dispersion Compensation 140
Section 3-3 Review 141
Test Your Knowledge 141
3-4 Optical Components 142
Intermediate Components 144
Detectors 144
Fiber Connectorization 146
Section 3-4 Review 147
Test Your Knowledge 148
3-5 Optical Networking 148
Defining Optical Networking 149
Building Distribution 151
Campus Distribution 154
Section 3-5 Review 157
Test Your Knowledge 158
3-6 Safety 159
Section 3-6 Review 160
Test Your Knowledge 160
Summary 161
Questions and Problems 161
Certification Questions 164
CHAPTER 4 Wireless Networking 168
Chapter Outline 169
Objectives 169
Key Terms 169
4-1 Introduction 170
4-2 The IEEE 802.11 Wireless LAN Standard 172
Section 4-2 Review 179
Test Your Knowledge 179
4-3 802.11 Wireless Networking 180
Section 4-3 Review 189
Test Your Knowledge 190
4-4 Bluetooth, WiMAX, RFID, and Mobile Communications 190
Bluetooth 190
WiMAX 193
Radio Frequency Identification 194
Section 4-4 Review 198
Test Your Knowledge 199
4-5 Securing Wireless LANS 199
Section 4-5 Review 202
Test Your Knowledge 203
4-6 Configuring a Point-to-Multipoint Wireless LAN: A Case Study 203
1. Antenna Site Survey 204
2. Establishing a Point-to-Point Wireless Link to the Home Network 204
34. Configuring the Multipoint Distribution/Conducting an RF Site Survey 206
5. Configuring the Remote Installations 208
Section 4-6 Review 208
Test Your Knowledge 209
Summary 210
Questions and Problems 210
Critical Thinking 215
Certification Questions 216
CHAPTER 5 Interconnecting the LANs 218
Chapter Outline 219
Objectives 219
Key Terms 219
5-1 Introduction 220
5-2 The Network Bridge 221
Section 5-2 Review 226
Test Your Knowledge 227
5-3 The Network Switch 228
HubSwitch Comparison 230
Managed Switches 233
Multilayer Switches 238
Section 5-3 Review 238
Test Your Knowledge 239
5-4 The Router 239
The Router Interface: Cisco 2800 Series 240
The Router InterfaceCisco 2600 Series 241
Section 5-4 Review 244
Test Your Knowledge 244
5-5 Interconnecting LANs with the Router 245
Gateway Address 247
Network Segments 247
Section 5-5 Review 248
Test Your Knowledge 248
5-6 Configuring the Network InterfaceAuto-Negotiation 249
Auto-Negotiation Steps 249
Full-Duplex/Half-Duplex 250
Section 5-6 Review 252
Test Your Knowledge 252
Summary 253
Questions and Problems 253
Critical Thinking 258
Certification Questions 259
CHAPTER 6 TCP/IP 262
Chapter Outline 263
Objectives 263
Key Terms 263
6-1 Introduction 264
6-2 The TCP/IP Layers 265
The Application Layer 266
The Transport Layer 268
The Internet Layer 272
The Network Interface Layer 274
Section 6-2 Review 275
Test Your Knowledge 276
6-3 Number Conversion 276
Binary-to-Decimal Conversion 276
Decimal-to-Binary Conversion 278
Hexadecimal Numbers 280
Section 6-3 Review 283
Test Your Knowledge 283
6-4 IPv4 Addressing 283
Section 6-4 Review 287
Test Your Knowledge 287
6-5 Subnet Masks 288
Section 6-5 Review 295
Test Your Knowledge 295
6-6 CIDR Blocks 296
Section 6-6 Review 299
Test Your Knowledge 299
6-7 IPv6 Addressing 300
Section 6-7 Review 303
Test Your Knowledge 303
Summary 304
Questions and Problems 304
Critical Thinking 313
Certification Questions 314
CHAPTER 7 Introduction to Router Configuration 318
Chapter Outline 319
Objectives 319
Key Terms 319
7-1 Introduction 320
7-2 Router Fundamentals 321
Layer 3 Networks 323
Section 7-2 Review 328
Test Your Knowledge 329
7-3 The Console Port Connection 329
Configuring the HyperTerminal Software (Windows) 331
Configuring the Z-Term Serial Communications Software (Mac) 333
Section 7-3 Review 335
Test Your Knowledge 335
7-4 The Router's User EXEC Mode (Router>) 336
The User EXEC Mode 336
Router Configuration Challenge: The User EXEC Mode 339
Section 7-4 Review 342
Test Your Knowledge 342
7-5 The Router's Privileged EXEC Mode (Router#) 343
Hostname 344
Enable Secret 344
Setting the Line Console Passwords 345
Fast Ethernet Interface Configuration 346
Serial Interface Configuration 347
Router Configuration Challenge: The Privileged EXEC Mode 349
Section 7-5 Review 351
Test Your Knowledge 351
Summary 352
Questions and Problems 352
Critical Thinking 357
Certification Questions 359
CHAPTER 8 Introduction to Switch Configuration 362
Chapter Outline 363
Objectives 363
Key Terms 363
8-1 Introduction 364
8-2 Introduction to VLANs 365
Virtual LAN 366
Section 8-2 Review 367
Test Your Knowledge 367
8-3 Introduction to Switch Configuration 368
Hostname 368
Enable Secret 369
Setting the Line Console Passwords 369
Static VLAN Configuration 371
Networking ChallengeSwitch Configuration 375
Section 8-3 Review 376
Test Your Knowledge 376
8-4 Spanning-Tree Protocol 377
Section 8-4 Review 379
Test Your Knowledge 379
8-5 Network Management 380
Section 8-5 Review 383
Test Your Knowledge 384
8-6 Power Over Ethernet 385
Section 8-6 Review 387
Test Your Knowledge 387
Summary 389
Questions and Problems 389
Critical Thinking 394
Certification Questions 395
CHAPTER 9 Routing Protocols 398
Chapter Outline 399
Objectives 399
Key Terms 399
9-1 Introduction 400
9-2 Static Routing 401
Gateway of Last Resort 408
Configuring Static Routes 408
Networking Challenge: Chapter 9Static Routes 411
Section 9-2 Review 412
Test Your Knowledge 412
9-3 Dynamic Routing Protocols 413
Section 9-3 Review 414
Test Your Knowledge 415
9-4 Distance Vector Protocols 415
Section 9-4 Review 417
Test Your Knowledge 417
9-5 Configuring RIP and RIPv2 418
Configuring Routes with RIP 420
Configuring Routes with RIP Version 2 425
Networking ChallengeRIP V2 426
Section 9-5 Review 427
Test Your Knowledge 428
9-6 Link State Protocols 428
Section 9-6 Review 431
Test Your Knowledge 431
9-7 Configuring the Open Shortest Path First (OSPF) Routing Protocol 432
Networking Challenge: OSPF 437
Section 9-7 Review 437
Test Your Knowledge 438
9-8 Hybrid Protocols: Configuring the Enhanced Interior Gateway Routing Protocol (EIGRP) 438
Configuring Routes with EIGRP 439
Networking ChallengeEIGRP 443
Section 9-8 Review 444
Test Your Knowledge 445
Summary 446
Questions and Problems 446
Critical Thinking 459
Certification Questions 459
CHAPTER 10 Internet Technologies: Out to the Internet 462
Chapter Outline 463
Objectives 463
Key Terms 463
10-1 Introduction 465
10-2 The Line Connection 467
Data Channels 468
Point of Presence 470
Section 10-2 Review 472
Test Your Knowledge 472
10-3 Remote Access 473
Analog Modem Technologies 473
Cable Modems 474
xDSL Modems 474
The Remote Access Server 477
Section 10-3 Review 479
Test Your Knowledge 480
10-4 Metro Ethernet/Carrier Ethernet 480
Ethernet Service Types 482
Service Attributes 483
Section 10-4 Review 484
Test Your Knowledge 484
10-5 Network ServicesDHCP and DNS 485
The DHCP Data Packets 487
DHCP Deployment 488
Network Services: DNS 489
Internet Domain Name 490
Section 10-5 Review 495
Test Your Knowledge 496
10-6 Internet RoutingBGP 496
Section 10-6 Review 499
Test Your Knowledge 499
10-7 Analyzing Internet Data Traffic 500
Utilization/Errors Strip Chart 501
Network Layer Matrix 501
Network Layer Host Table 502
Frame Size Distribution 502
Section 10-7 Review 503
Test Your Knowledge 504
Summary 505
Questions and Problems 505
Certification Questions 511
CHAPTER 11 Troubleshooting 514
Chapter Outline 515
Objectives 515
Key Terms 515
11-1 Introduction 516
11-2 Analyzing Computer Networks 518
Using Wireshark to Inspect Data Packets 518
Using Wireshark to Capture Packets 521
Section 11-2 Review 522
Test Your Knowledge 523
11-3 Analyzing Computer NetworksFTP Data Packets 523
Section 11-3 Review 524
Test Your Knowledge 524
11-4 Analyzing Campus Network Data Traffic 525
Section 11-4 Review 527
Test Your Knowledge 528
11-5 Troubleshooting the Router Interface 528
Section 11-5 Review 533
Test Your Knowledge 533
11-6 Troubleshooting the Switch Interface 533
Section 11-6 Review 537
Test Your Knowledge 537
11-7 Troubleshooting Fiber OpticsThe OTDR 538
Section 11-
