计算机网络与因特网

《计算机网络与因特网(第六版)(英文版)》是2017年8月电子工业出版社出版的图书，作者是(美)Douglas E. Comer(道格拉斯· E·科默)。

• 书名 计算机网络与因特网(第六版)(英文版)
• 作者 (美)Douglas E. Comer(道格拉斯· E·科默)
• ISBN 9787121323133
• 页数 668页
• 定价 109元

内容简介

　　本书在前几版的基础上进行了全面的修订与更新，系统介绍了计算机网络各方面的知识，全面翔实地讲解网络底层细节，并增 加了最新的网络应用与技元断朵术。全书共分为五大部分，讲解了网络基础知识与因特网应用固语力，数据传输技术，分组交换及网络技术，网际互连协议，以及其他网络概念与技术 ;来自并提供了可深入阅读的相关资料。夜戒本书内容涵盖广泛，例题丰富，注重实践，并提供了大量的练淋充 习 题和丰富的网络资 源，兼顾到教师和学360百科生的双重需求。

图检兴由方鱼船黄书目录

　　Contents

　　PART I Introduction And Internet Applications

　　Chapter 1 Introduction And Overvi去土型减评评ew 1

　　1.1 Growth Of Computer Networking 1

　　1.2 Why Networking Seems Compl著很食期画补念ex 2

　　1.3 The Five Key Aspects Of Networking 2

　　1.4 Public And Private Parts Of The Internet 6

　　1.5 Networks, Interopera课核解缩言月等派成bility, And S编行tandards 8

　　1.6 Protocol Suites And Layering Models 9

　　1.7 How Data Passes Through Layers 11

　　1.8 Headers A转帮参本nd Layers 12

　　1.9 ISO And The O印已际问夫孔SI Seven Layer Reference Model 13

　　1.10 司Remainder Of The 存井硫别Text 14

　　1.11 超管酒有油左讲防Summary 1段又时广克速福为4

　　Chapter 2 Internet Trends 17

　　2.1 Int在口哥料盾后境断药负哪roduction 17

　　2.2 Resour四面ce Sharing 17

　　2.3 Growth Of The Internet 18

　　2.4 From Resource Sh剧全兵质子流肉控耐田令aring To Communication 21

　　2胡企.5 From Text To Multim王底升兰体动天话检edia 21

　　2.6 Recent Trends 22

　　2.7 From I者类苏诗上ndividual Computers To Cloud Computing 23

　　2.8 Summary 24

　　Chapter 3 Internet Applications And Network Programming 27

　　3.1 Introduction 27

　　3.2 Two Basic Internet Communication Paradigms 28

　　3.3 Connection-Oriented Communication 29

　　3.4 The Client-Server Model Of Interaction 30

　　3.5 Characteristics Of Clients And Servers 31

　　3.6 Server Programs And Server-Class Computers 31

　　3.7 Requests, Responses, And Direction Of Data Flow 32

　　3.8 Multiple Clients And Multiple Servers 32

　　3.9 Server Identification And Demultiplexing 33

　　3.10 Concurrent Servers 34

　　3.11 Circular Dependencies Among Servers 35

　　3.12 Peer-To-Peer Interactions 35

　　3.13 Network Programming And The Socket API 36

　　3.14 Sockets, Descriptors, And Network I/O 36

　　3.15 Parameters And The Socket API 37

　　3.16 Socket Calls In A Client And Server 38

　　3.17 Socket Functions Used By Both Client And Server 38

　　3.18 The Connect Function Used Only By A Client 40

　　3.19 Socket Functions Used Only By A Server 40

　　3.20 Socket Functions Used With The Message Paradigm 43

　　3.21 Other Socket Functions 44

　　3.22 Sockets, Threads, And Inheritance 45

　　3.23 Summary 45

　　Chapter 4 Traditional Internet Applications 49

　　4.1 Introduction 49

　　4.2 Application-Layer Protocols 49

　　4.3 Representation And Transfer 50

　　4.4 Web Protocols 51

　　4.5 Document Representation With HTML 52

　　4.6 Uniform Resource Locators And Hyperlinks 54

　　4.7 Web Document Transfer With HTTP 55

　　4.8 Caching In Browsers 57

　　4.9 Browser Architecture 59

　　4.10 File Transfer Protocol (FTP) 59

　　4.11 FTP Communication Paradigm 60

　　4.12 Electronic Mail 63

　　4.13 The Simple Mail Transfer Protocol (SMTP) 64

　　4.14 ISPs, Mail Servers, And Mail Access 66

　　4.15 Mail Access Protocols (POP, IMAP) 67

　　4.16 Email Representation Standards (RFC2822, MIME) 67

　　4.17 Domain Name System (DNS) 69

　　4.18 Domain Names That Begin With A Service Name 71

　　4.19 The DNS Hierarchy And Server Model 72

　　4.20 Name Resolution 72

　　4.21 Caching In DNS Servers 74

　　4.22 Types Of DNS Entries 75

　　4.23 Aliases And CNAME Resource Records 76

　　4.24 Abbreviations And The DNS 76

　　4.25 Internationalized Domain Names 77

　　4.26 Extensible Representations (XML) 78

　　4.27 Summary 79

　　PART II Data Communication Basics

　　Chapter 5 Overview Of Data Communications 85

　　5.1 Introduction 85

　　5.2 The Essence Of Data Communications 86

　　5.3 Motivation And Scope Of The Subject 87

　　5.4 The Conceptual Pieces Of A Communications System 87

　　5.5 The Subtopics Of Data Communications 90

　　5.6 Summary 91

　　Chapter 6 Information Sources And Signals 93

　　6.1 Introduction 93

　　6.2 Information Sources 93

　　6.3 Analog And Digital Signals 94

　　6.4 Periodic And Aperiodic Signals 94

　　6.5 Sine Waves And Signal Characteristics 95

　　6.6 Composite Signals 97

　　6.7 The Importance Of Composite Signals And Sine Functions 97

　　6.8 Time And Frequency Domain Representations 98

　　6.9 Bandwidth Of An Analog Signal 99

　　6.10 Digital Signals And Signal Levels 100

　　6.11 Baud And Bits Per Second 101

　　6.12 Converting A Digital Signal To Analog 102

　　6.13 The Bandwidth Of A Digital Signal 103

　　6.14 Synchronization And Agreement About Signals 103

　　6.15 Line Coding 104

　　6.16 Manchester Encoding Used In Computer Networks 106

　　6.17 Converting An Analog Signal To Digital 107

　　6.18 The Nyquist Theorem And Sampling Rate 108

　　6.19 Nyquist Theorem And Telephone System Transmission 108

　　6.20 Nonlinear Encoding 109

　　6.21 Encoding And Data Compression 109

　　6.22 Summary 110

　　Chapter 7 Transmission Media 113

　　7.1 Introduction 113

　　7.2 Guided And Unguided Transmission 113

　　7.3 A Taxonomy By Forms Of Energy 114

　　7.4 Background Radiation And Electrical Noise 115

　　7.5 Twisted Pair Copper Wiring 115

　　7.6 Shielding: Coaxial Cable And Shielded Twisted Pair 117

　　7.7 Categories Of Twisted Pair Cable 118

　　7.8 Media Using Light Energy And Optical Fibers 119

　　7.9 Types Of Fiber And Light Transmission 120

　　7.10 Optical Fiber Compared To Copper Wiring 121

　　7.11 Infrared Communication Technologies 122

　　7.12 Point-To-Point Laser Communication 122

　　7.13 Electromagnetic (Radio) Communication 123

　　7.14 Signal Propagation 124

　　7.15 Types Of Satellites 125

　　7.16 Geostationary Earth Orbit (GEO) Satellites 126

　　7.17 GEO Coverage Of The Earth 127

　　7.18 Low Earth Orbit (LEO) Satellites And Clusters 128

　　7.19 Tradeoffs Among Media Types 128

　　7.20 Measuring Transmission Media 129

　　7.21 The Effect Of Noise On Communication 129

　　7.22 The Significance Of Channel Capacity 130

　　7.23 Summary 131

　　Chapter 8 Reliability And Channel Coding 135

　　8.1 Introduction 135

　　8.2 The Three Main Sources Of Transmission Errors 135

　　8.3 Effect Of Transmission Errors On Data 136

　　8.4 Two Strategies For Handling Channel Errors 137

　　8.5 Block And Convolutional Error Codes 138

　　8.6 An Example Block Error Code: Single Parity Checking 139

　　8.7 The Mathematics Of Block Error Codes And (n,k) Notation 140

　　8.8 Hamming Distance: A Measure Of A Code?ˉs Strength 140

　　8.9 The Hamming Distance Among Strings In A Codebook 141

　　8.10 The Tradeoff Between Error Detection And Overhead 142

　　8.11 Error Correction With Row And Column (RAC) Parity 142

　　8.12 The 16-Bit Checksum Used In The Internet 144

　　8.13 Cyclic Redundancy Codes (CRCs) 145

　　8.14 An Efficient Hardware Implementation Of CRC 148

　　8.15 Automatic Repeat Request (ARQ) Mechanisms 148

　　8.16 Summary 149

　　Chapter 9 Transmission Modes 153

　　9.1 Introduction 153

　　9.2 A Taxonomy Of Transmission Modes 153

　　9.3 Parallel Transmission 154

　　9.4 Serial Transmission 155

　　9.5 Transmission Order: Bits And Bytes 156

　　9.6 Timing Of Serial Transmission 156

　　9.7 Asynchronous Transmission 157

　　9.8 RS-232 Asynchronous Character Transmission 157

　　9.9 Synchronous Transmission 158

　　9.10 Bytes, Blocks, And Frames 159

　　9.11 Isochronous Transmission 160

　　9.12 Simplex, Half-Duplex, And Full-Duplex Transmission 160

　　9.13 DCE And DTE Equipment 162

　　9.14 Summary 162

　　Chapter 10 Modulation And Modems 165

　　10.1 Introduction 165

　　10.2 Carriers, Frequency, And Propagation 165

　　10.3 Analog Modulation Schemes 166

　　10.4 Amplitude Modulation 166

　　10.5 Frequency Modulation 167

　　10.6 Phase Shift Modulation 168

　　10.7 Amplitude Modulation And Shannon?ˉs Theorem 168

　　10.8 Modulation, Digital Input, And Shift Keying 168

　　10.9 Phase Shift Keying 169

　　10.10 Phase Shift And A Constellation Diagram 171

　　10.11 Quadrature Amplitude Modulation 173

　　10.12 Modem Hardware For Modulation And Demodulation 174

　　10.13 Optical And Radio Frequency Modems 174

　　10.14 Dialup Modems 175

　　10.15 QAM Applied To Dialup 175

　　10.16 V.32 And V.32bis Dialup Modems 176

　　10.17 Summary 177

　　Chapter 11 Multiplexing And Demultiplexing (Channelization) 181

　　11.1 Introduction 181

　　11.2 The Concept Of Multiplexing 181

　　11.3 The Basic Types Of Multiplexing 182

　　11.4 Frequency Division Multiplexing (FDM) 183

　　11.5 Using A Range Of Frequencies Per Channel 185

　　11.6 Hierarchical FDM 186

　　11.7 Wavelength Division Multiplexing (WDM) 187

　　11.8 Time Division Multiplexing (TDM) 187

　　11.9 Synchronous TDM 188

　　11.10 Framing Used In The Telephone System Version Of TDM 189

　　11.11 Hierarchical TDM 190

　　11.12 The Problem With Synchronous TDM: Unfilled Slots 190

　　11.13 Statistical TDM 191

　　11.14 Inverse Multiplexing 192

　　11.15 Code Division Multiplexing 193

　　11.16 Summary 195

　　Chapter 12 Access And Interconnection Technologies 199

　　12.1 Introduction 199

　　12.2 Internet Access Technology: Upstream And Downstream 199

　　12.3 Narrowband And Broadband Access Technologies 200

　　12.4 The Local Loop And ISDN 202

　　12.5 Digital Subscriber Line (DSL) Technologies 202

　　12.6 Local Loop Characteristics And Adaptation 203

　　12.7 The Data Rate Of ADSL 204

　　12.8 ADSL Installation And Splitters 205

　　12.9 Cable Modem Technologies 205

　　12.10 The Data Rate Of Cable Modems 206

　　12.11 Cable Modem Installation 206

　　12.12 Hybrid Fiber Coax 207

　　12.13 Access Technologies That Employ Optical Fiber 208

　　12.14 Head-End And Tail-End Modem Terminology 208

　　12.15 Wireless Access Technologies 209

　　12.16 High-Capacity Connections At The Internet Core 209

　　12.17 Circuit Termination, DSU/ CSU, And NIU 210

　　12.18 Telephone Standards For Digital Circuits 211

　　12.19 DS Terminology And Data Rates 212

　　12.20 Highest Capacity Circuits (STS Standards) 212

　　12.21 Optical Carrier Standards 213

　　12.22 The C Suffix 213

　　12.23 Synchronous Optical Network (SONET) 214

　　12.24 Summary 215

　　PART III Packet Switching And Network Technologies

　　Chapter 13 Local Area Networks: Packets, Frames, And Topologies 219

　　13.1 Introduction 219

　　13.2 Circuit Switching And Analog Communication 220

　　13.3 Packet Switching 221

　　13.4 Local And Wide Area Packet Networks 222

　　13.5 Standards For Packet Format And Identification 223

　　13.6 IEEE 802 Model And Standards 224

　　13.7 Point-To-Point And Multi-Access Networks 225

　　13.8 LAN Topologies 227

　　13.9 Packet Identification, Demultiplexing, MAC Addresses 229

　　13.10 Unicast, Broadcast, And Multicast Addresses 230

　　13.11 Broadcast, Multicast, And Efficient Multi-Point Delivery 231

　　13.12 Frames And Framing 232

　　13.13 Byte And Bit Stuffing 233

　　13.14 Summary 234

　　Chapter 14 The IEEE MAC Sublayer 239

　　14.1 Introduction 239

　　14.2 A Taxonomy Of Mechanisms For Shared Access 239

　　14.3 Static And Dynamic Channel Allocation 240

　　14.4 Channelization Protocols 241

　　14.5 Controlled Access Protocols 242

　　14.6 Random Access Protocols 244

　　14.7 Summary 250

　　Chapter 15 Wired LAN Technology (Ethernet And 802.3) 253

　　15.1 Introduction 253

　　15.2 The Venerable Ethernet 253

　　15.3 Ethernet Frame Format 254

　　15.4 Ethernet Frame Type Field And Demultiplexing 254

　　15.5 IEEE?ˉs Version Of Ethernet (802.3) 255

　　15.6 LAN Connections And Network Interface Cards 256

　　15.7 Ethernet Evolution And Thicknet Wiring 256

　　15.8 Thinnet Ethernet Wiring 257

　　15.9 Twisted Pair Ethernet Wiring And Hubs 258

　　15.10 Physical And Logical Ethernet Topology 259

　　15.11 Wiring In An Office Building 259

　　15.12 Ethernet Data Rates And Cable Types 261

　　15.13 Twisted Pair Connectors And Cables 261

　　15.14 Summary 262

　　Chapter 16 Wireless Networking Technologies 265

　　16.1 Introduction 265

　　16.2 A Taxonomy Of Wireless Networks 265

　　16.3 Personal Area Networks (PANs) 266

　　16.4 ISM Wireless Bands Used By LANs And PANs 267

　　16.5 Wireless LAN Technologies And Wi-Fi 267

　　16.6 Spread Spectrum Techniques 268

　　16.7 Other Wireless LAN Standards 269

　　16.8 Wireless LAN Architecture 270

　　16.9 Overlap, Association, And 802.11 Frame Format 271

　　16.10 Coordination Among Access Points 272

　　16.11 Contention And Contention-Free Access 272

　　16.12 Wireless MAN Technology And WiMax 274

　　16.13 PAN Technologies And Standards 276

　　16.14 Other Short-Distance Communication Technologies 277

　　16.15 Wireless WAN Technologies 278

　　16.16 Micro Cells 280

　　16.17 Cell Clusters And Frequency Reuse 280

　　16.18 Generations Of Cellular Technologies 282

　　16.19 VSAT Satellite Technology 284

　　16.20 GPS Satellites 285

　　16.21 Software Defined Radio And The Future Of Wireless 286

　　16.22 Summary 287

　　Chapter 17 Repeaters, Bridges, And Switches 291

　　17.1 Introduction 291

　　17.2 Distance Limitation And LAN Design 291

　　17.3 Fiber Modem Extensions 292

　　17.4 Repeaters 293

　　17.5 Bridges And Bridging 293

　　17.6 Learning Bridges And Frame Filtering 294

　　17.7 Why Bridging Works Well 295

　　17.8 Distributed Spanning Tree 296

　　17.9 Switching And Layer 2 Switches 297

　　17.10 VLAN Switches 299

　　17.11 Multiple Switches And Shared VLANs 300

　　17.12 The Importance Of Bridging 301

　　17.13 Summary 302

　　Chapter 18 WAN Technologies And Dynamic Routing 305

　　18.1 Introduction 305

　　18.2 Large Spans And Wide Area Networks 305

　　18.3 Traditional WAN Architecture 306

　　18.4 Forming A WAN 308

　　18.5 Store And Forward Paradigm 309

　　18.6 Addressing In A WAN 309

　　18.7 Next-Hop Forwarding 310

　　18.8 Source Independence 313

　　18.9 Dynamic Routing Updates In A WAN 313

　　18.10 Default Routes 314

　　18.11 Forwarding Table Computation 315

　　18.12 Distributed Route Computation 316

　　18.13 Shortest Paths And Weights 320

　　18.14 Routing Problems 321

　　18.15 Summary 322

　　Chapter 19 Networking Technologies Past And Present 325

　　19.1 Introduction 325

　　19.2 Connection And Access Technologies 325

　　19.3 LAN Technologies 327

　　19.4 WAN Technologies 328

　　19.5 Summary 332

　　PART IV Internetworking

　　Chapter 20 Internetworking: Concepts, Architecture, And Protocols 335

　　20.1 Introduction 335

　　20.2 The Motivation For Internetworking 335

　　20.3 The Concept Of Universal Service 336

　　20.4 Universal Service In A Heterogeneous World 336

　　20.5 Internetworking 337

　　20.6 Physical Network Connection With Routers 337

　　20.7 Internet Architecture 338

　　20.8 Intranets And Internets 339

　　20.9 Achieving Universal Service 339

　　20.10 A Virtual Network 339

　　20.11 Protocols For Internetworking 341

　　20.12 Review Of TCP/IP Layering 341

　　20.13 Host Computers, Routers, And Protocol Layers 342

　　20.14 Summary 342

　　Chapter 21 IP: Internet Addressing 345

　　21.1 Introduction 345

　　21.2 The Move To IPv6 345

　　21.3 The Hourglass Model And Difficulty Of Change 346

　　21.4 Addresses For The Virtual Internet 346

　　21.5 The IP Addressing Scheme 348

　　21.6 The IP Address Hierarchy 348

　　21.7 Original Classes Of IPv4 Addresses 349

　　21.8 IPv4 Dotted Decimal Notation 350

　　21.9 Authority For Addresses 351

　　21.10 IPv4 Subnet And Classless Addressing 351

　　21.11 Address Masks 353

　　21.12 CIDR Notation Used With IPv4 354

　　21.13 A CIDR Example 354

　　21.14 CIDR Host Addresses 356

　　21.15 Special IPv4 Addresses 357

　　21.16 Summary Of Special IPv4 Addresses 359

　　21.17 IPv4 Berkeley Broadcast Address Form 359

　　21.18 Routers And The IPv4 Addressing Principle 360

　　21.19 Multihomed Hosts 361

　　21.20 IPv6 Multihoming And Network Renumbering 361

　　21.21 IPv6 Addressing 362

　　21.22 IPv6 Colon Hexadecimal Notation 363

　　21.23 Summary 364

　　Chapter 22 Datagram Forwarding 369

　　22.1 Introduction 369

　　22.2 Connectionless Service 369

　　22.3 Virtual Packets 370

　　22.4 The IP Datagram 370

　　22.5 The IPv4 Datagram Header Format 371

　　22.6 The IPv6 Datagram Header Format 373

　　22.7 IPv6 Base Header Format 373

　　22.8 Forwarding An IP Datagram 375

　　22.9 Network Prefix Extraction And Datagram Forwarding 376

　　22.10 Longest Prefix Match 377

　　22.11 Destination Address And Next-Hop Address 378

　　22.12 Best-Effort Delivery 378

　　22.13 IP Encapsulation 379

　　22.14 Transmission Across An Internet 380

　　22.15 MTU And Datagram Fragmentation 381

　　22.16 Fragmentation Of An IPv6 Datagram 383

　　22.17 Reassembly Of An IP Datagram From Fragments 384

　　22.18 Collecting The Fragments Of A Datagram 385

　　22.19 The Consequence Of Fragment Loss 386

　　22.20 Fragmenting An IPv4 Fragment 386

　　22.21 Summary 387

　　Chapter 23 Support Protocols And Technologies 391

　　23.1 Introduction 391

　　23.2 Address Resolution 391

　　23.3 An Example Of IPv4 Addresses 393

　　23.4 The IPv4 Address Resolution Protocol (ARP) 393

　　23.5 ARP Message Format 394

　　23.6 ARP Encapsulation 395

　　23.7 ARP Caching And Message Processing 396

　　23.8 The Conceptual Address Boundary 398

　　23.9 Internet Control Message Protocol (ICMP) 399

　　23.10 ICMP Message Format And Encapsulation 400

　　23.11 IPv6 Address Binding With Neighbor Discovery 401

　　23.12 Protocol Software, Parameters, And Configuration 401

　　23.13 Dynamic Host Configuration Protocol (DHCP) 402

　　23.14 DHCP Protocol Operation And Optimizations 403

　　23.15 DHCP Message Format 404

　　23.16 Indirect DHCP Server Access Through A Relay 405

　　23.17 IPv6 Autoconfiguration 405

　　23.18 Network Address Translation (NAT) 406

　　23.19 NAT Operation And IPv4 Private Addresses 407

　　23.20 Transport-Layer NAT (NAPT) 409

　　23.21 NAT And Servers 410

　　23.22 NAT Software And Systems For Use At Home 410

　　23.23 Summary 411

　　Chapter 24 UDP: Datagram Transport Service 415

　　24.1 Introduction 415

　　24.2 Transport Protocols And End-To-End Communication 415

　　24.3 The User Datagram Protocol 416

　　24.4 The Connectionless Paradigm 417

　　24.5 Message-Oriented Interface 417

　　24.6 UDP Communication Semantics 418

　　24.7 Modes Of Interaction And Multicast Delivery 419

　　24.8 Endpoint Identification With Protocol Port Numbers 419

　　24.9 UDP Datagram Format 420

　　24.10 The UDP Checksum And The Pseudo Header 421

　　24.11 UDP Encapsulation 421

　　24.12 Summary 422

　　Chapter 25 TCP: Reliable Transport Service 425

　　25.1 Introduction 425

　　25.2 The Transmission Control Protocol 425

　　25.3 The Service TCP Provides To Applications 426

　　25.4 End-To-End Service And Virtual Connections 427

　　25.5 Techniques That Transport Protocols Use 428

　　25.6 Techniques To Avoid Congestion 432

　　25.7 The Art Of Protocol Design 433

　　25.8 Techniques Used In TCP To Handle Packet Loss 434

　　25.9 Adaptive Retransmission 435

　　25.10 Comparison Of Retransmission Times 436

　　25.11 Buffers, Flow Control, And Windows 437

　　25.12 TCP?ˉs Three-Way Handshake 438

　　25.13 TCP Congestion Control 440

　　25.14 Versions Of TCP Congestion Control 441

　　25.15 Other Variations: SACK And ECN 441

　　25.16 TCP Segment Format 442

　　25.17 Summary 443

　　Chapter 26 Internet Routing And Routing Protocols 447

　　26.1 Introduction 447

　　26.2 Static Vs. Dynamic Routing 447

　　26.3 Static Routing In Hosts And A Default Route 448

　　26.4 Dynamic Routing And Routers 449

　　26.5 Routing In The Global Internet 450

　　26.6 Autonomous System Concept 451

　　26.7 The Two Types Of Internet Routing Protocols 451

　　26.8 Routes And Data Traffic 454

　　26.9 The Border Gateway Protocol (BGP) 454

　　26.10 The Routing Information Protocol (RIP) 456

　　26.11 RIP Packet Format 457

　　26.12 The Open Shortest Path First Protocol (OSPF) 458

　　26.13 An Example OSPF Graph 459

　　26.14 OSPF Areas 459

　　26.15 Intermediate System - Intermediate System (IS-IS) 460

　　26.16 Multicast Routing 461

　　26.17 Summary 465

　　PART V Other Networking Concepts & Technologies

　　Chapter 27 Network Performance (QoS And DiffServ) 469

　　27.1 Introduction 469

　　27.2 Measures Of Performance 469

　　27.3 Latency Or Delay 470

　　27.4 Capacity, Throughput, And Goodput 472

　　27.5 Understanding Throughput And Delay 473

　　27.6 Jitter 474

　　27.7 The Relationship Between Delay And Throughput 475

　　27.8 Measuring Delay, Throughput, And Jitter 476

　　27.9 Passive Measurement, Small Packets, And NetFlow 478

　　27.10 Quality Of Service (QoS) 479

　　27.11 Fine-Grain And Coarse-Grain QoS 480

　　27.12 Implementation Of QoS 482

　　27.13 Internet QoS Technologies 484

　　27.14 Summary 485

　　Chapter 28 Multimedia And IP Telephony (VoIP) 489

　　28.1 Introduction 489

　　28.2 Real-Time Data Transmission And Best-Effort Delivery 489

　　28.3 Delayed Playback And Jitter Buffers 490

　　28.4 Real-Time Transport Protocol (RTP) 491

　　28.5 RTP Encapsulation 492

　　28.6 IP Telephony 493

　　28.7 Signaling And VoIP Signaling Standards 494

　　28.8 Components Of An IP Telephone System 495

　　28.9 Summary Of Protocols And Layering 498

　　28.10 H.323 Characteristics 499

　　28.11 H.323 Layering 499

　　28.12 SIP Characteristics And Methods 500

　　28.13 An Example SIP Session 501

　　28.14 Telephone Number Mapping And Routing 502

　　28.15 Summary 503

　　Chapter 29 Network Security 507

　　29.1 Introduction 507

　　29.2 Criminal Exploits And Attacks 507

　　29.3 Security Policy 511

　　29.4 Responsibility And Control 512

　　29.5 Security Technologies 513

　　29.6 Hashing: An Integrity And Authentication Mechanism 513

　　29.7 Access Control And Passwords 514

　　29.8 Encryption: A Fundamental Security Technique 514

　　29.9 Private Key Encryption 515

　　29.10 Public Key Encryption 515

　　29.11 Authentication With Digital Signatures 516

　　29.12 Key Authorities And Digital Certificates 517

　　29.13 Firewalls 519

　　29.14 Firewall Implementation With A Packet Filter 520

　　29.15 Intrusion Detection Systems 522

　　29.16 Content Scanning And Deep Packet Inspection 522

　　29.17 Virtual Private Networks (VPNs) 523

　　29.18 The Use of VPN Technology For Telecommuting 525

　　29.19 Packet Encryption Vs. Tunneling 526

　　29.20 Security Technologies 528

　　29.21 Summary 529

　　Chapter 30 Network Management (SNMP) 533

　　30.1 Introduction 533

　　30.2 Managing An Intranet 533

　　30.3 FCAPS: The Industry Standard Model 534

　　30.4 Example Network Elements 536

　　30.5 Network Management Tools 536

　　30.6 Network Management Applications 538

　　30.7 Simple Network Management Protocol 539

　　30.8 SNMP?ˉs Fetch-Store Paradigm 539

　　30.9 The SNMP MIB And Object Names 540

　　30.10 The Variety Of MIB Variables 541

　　30.11 MIB Variables That Correspond To Arrays 541

　　30.12 Summary 542

　　Chapter 31 Software Defined Networking (SDN) 545

　　31.1 Introduction 545

　　31.2 Marketing Hype And Reality 545

　　31.3 Motivation For A New Approach 546

　　31.4 Conceptual Organization Of A Network Element 548

　　31.5 Control Plane Modules And The Hardware Interface 549

　　31.6 A New Paradigm: Software Defined Networking 550

　　31.7 Unanswered Questions 551

　　31.8 Shared Controllers And Network Connections 552

　　31.9 SDN Communication 553

　　31.10 OpenFlow: A Controller-To-Element Protocol 554

　　31.11 Classification Engines In Switches 555

　　31.12 TCAM And High-Speed Classification 556

　　31.13 Classification Across Multiple Protocol Layers 557

　　31.14 TCAM Size And The Need For Multiple Patterns 557

　　31.15 Items OpenFlow Can Specify 558

　　31.16 Traditional And Extended IP Forwarding 559

　　31.17 End-To-End Path With MPLS Using Layer 2 560

　　31.18 Dynamic Rule Creation And Control Of Flows 561

　　31.19 A Pipeline Model For Flow Tables 562

　　31.20 SDN?ˉs Potential Effect On Network Vendors 563

　　31.21 Summary 564

　　Chapter 32 The Internet Of Things 567

　　32.1 Introduction 567

　　32.2 Embedded Systems 567

　　32.3 Choosing A Network Technology 569

　　32.4 Energy Harvesting 570

　　32.5 Low Power Wireless Communication 570

　　32.6 Mesh Topology 571

　　32.7 The ZigBee Alliance 571

　　32.8 802.15.4 Radios And Wireless Mesh Networks 572

　　32.9 Internet Connectivity And Mesh Routing 573

　　32.10 IPv6 In A ZigBee Mesh Network 574

　　32.11 The ZigBee Forwarding Paradigm 575

　　32.12 Other Protocols In the ZigBee Stack 576

　　32.13 Summary 577

　　Chapter 33 Trends In Networking Technologies And Uses 579

　　33.1 Introduction 579

　　33.2 The Need For Scalable Internet Services 579

　　33.3 Content Caching (Akamai) 580

　　33.4 Web Load Balancers 580

　　33.5 Server Virtualization 581

　　33.6 Peer-To-Peer Communication 581

　　33.7 Distributed Data Centers And Replication 582

　　33.8 Universal Representation (XML) 582

　　33.9 Social Networking 583

　　33.10 Mobility And Wireless Networking 583

　　33.11 Digital Video 583

　　33.12 Higher-Speed Access And Switching 584

　　33.13 Cloud Computing 584

　　33.14 Overlay Networks 584

　　33.15 Middleware 586

　　33.16 Widespread Deployment Of IPv6 586

　　33.17 Summary 587

　　Appendix 1 A Simplified Application Programming Interface 589

　　Index 617

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