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Internetworking With TCP/IP: Volume I Principles, Protocols, and Architecture, Fifth Edition

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Internetworking With TCP/IP: Volume I Principles, Protocols, and Architecture, Fifth Edition

by Douglas E. Comer - Cisco Systems, Boxborough, MA 01719 and Department of Computer Sciences Purdue University, West Lafayette, IN 47907

Publisher: Addison-Wesley

Copyright Year: 2006

Publishing Date: 2005/06/30

eText ISBN-10: 0-13-187673-2

eText ISBN-13: 978-0-13-187673-6

Print ISBN-10: 0-13-187671-6

Print ISBN-13: 978-0-13-187671-2

Course: Networking, Computer Science

Pages: 688

eTextbook $48.00

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Table of Contents | Description

Instructor Resources | Student Resources

ABOUT THIS TITLE - TABLE OF CONTENTS

Foreword, xxiii

Foreword To The First Edition By The Late Jon Postel, xxv

What Others Have Said About The Fifth Edition Of Internetworking With TCP/IP, xxxi

About The Author, xxxiii

1. Introduction And Overview, 1

1.1. The Motivation For Internetworking, xxxiv

1.2. The TCP/IP Internet, 2

1.3. Internet Services, 2

1.4. History And Scope Of The Internet, 5

1.5. The Internet Architecture Board, 7

1.6. The IAB Reorganization, 7

1.7. Internet Request For Comments, 8

1.8. Future Growth And Technology, 9

1.9. Organization Of The Text, 10

1.10. Summary, 10

For Further Study, 11

2. Review Of Underlying Network Technologies, 13

2.1. Introduction, 13

2.2. Two Approaches To Network Communication, 14

2.3. Wide Area And Local Area Networks, 15

2.4. Ethernet Technology, 16

2.5. Switched Ethernet, 24

2.6. Asynchronous Transfer Mode, 25

2.7. Summary, 27

For Further Study, 28

3. Internetworking Concept And Architectural Model, 31

3.1. Introduction, 31

3.2. Application-Level Interconnection, 31

3.3. Network-Level Interconnection, 32

3.4. Properties Of The Internet, 33

3.5. Internet Architecture, 34

3.6. Interconnection Through IP Routers, 35

3.7. The User’s View, 36

3.8. All Networks Are Equal, 37

3.9. The Unanswered Questions, 38

3.10. Summary, 38

For Further Study, 38

4. Classful Internet Addresses, 41

4.1. Introduction, 41

4.2. Universal Identifiers, 41

4.3. The Original Classful Addressing Scheme, 42

4.4. Addresses Specify Network Connections, 43

4.5. Network And Directed Broadcast Addresses, 43

4.6. Limited Broadcast, 44

4.7. The All-0s Address, 45

4.8. Subnet And Classless Extensions, 45

4.9. IP Multicast Addresses, 45

4.10. Weaknesses In Internet Addressing, 46

4.11. Dotted Decimal Notation, 47

4.12. Loopback Address, 48

4.13. Summary Of Special Address Conventions, 48

4.14. Internet Addressing Authority, 48

4.15. Reserved Address Prefixes, 50

4.16. An Example, 50

4.17. Network Byte Order, 52

4.18. Summary, 52

For Further Study, 53

5. Mapping Internet Addresses To Physical Addresses (ARP), 57

5.1. Introduction, 57

5.2. The Address Resolution Problem, 57

5.3. Two Types Of Physical Addresses, 58

5.4. Resolution Through Direct Mapping, 58

5.5. Resolution Through Dynamic Binding, 59

5.6. The Address Resolution Cache, 60

5.7. ARP Cache Timeout, 61

5.8. ARP Refinements, 62

5.9. Relationship Of ARP To Other Protocols, 62

5.10. ARP Implementation, 62

5.11. ARP Encapsulation And Identification, 64

5.12. ARP Protocol Format, 64

5.13. Automatic ARP Cache Revalidation, 66

5.14. Reverse Address Resolution (RARP), 66

5.15. Summary, 67

For Further Study, 67

6. Internet Protocol: Connectionless Datagram Delivery (IPv4), 71

6.1. Introduction, 71

6.2. A Virtual Network, 71

6.3. Internet Architecture And Philosophy, 72

6.4. The Conceptual Service Organization, 72

6.5. Connectionless Delivery System, 73

6.6. Purpose Of The Internet Protocol, 73

6.7. The IPv4 Datagram, 74

6.8. Internet Datagram Options, 83

6.9. Summary, 89

For Further Study, 90

7. Internet Protocol: Forwarding IP Datagrams, 93

7.1. Introduction, 93

7.2. Forwarding In An Internet, 93

7.3. Direct And Indirect Delivery, 95

7.4. Table-Driven IP Forwarding, 97

7.5. Next-Hop Forwarding, 97

7.6. Default Routes, 100

7.7. Host-Specific Routes, 100

7.8. The IP Forwarding Algorithm, 100

7.9. Forwarding With IP Addresses, 101

7.10. Handling Incoming Datagrams, 103

7.11. Establishing Routing Tables, 104

7.12. Summary, 104

For Further Study, 105

8. Internet Protocol: Error And Control Messages (ICMP), 109

8.1. Introduction, 109

8.2. The Internet Control Message Protocol, 109

8.3. Error Reporting Vs. Error Correction, 110

8.4. ICMP Message Delivery, 111

8.5. ICMP Message Format, 112

8.6. Testing Destination Reachability And Status (Ping), 113

8.7. Echo Request And Reply Message Format, 114

8.8. Reports Of Unreachable Destinations, 115

8.9. Congestion And Datagram Flow Control, 116

8.10. Source Quench Format, 117

8.11. Route Change Requests From Routers, 118

8.12. Detecting Circular Or Excessively Long Routes, 119

8.13. Reporting Other Problems, 120

8.14. Clock Synchronization And Transit Time Estimation, 121

8.15. Older ICMP Messages No Longer Needed, 122

8.16. Summary, 123

For Further Study, 123

9. Classless And Subnet Address Extensions (CIDR), 127

9.1. Introduction, 127

9.2. Review Of Relevant Facts, 127

9.3. Minimizing Network Numbers, 128

9.4. Proxy ARP, 128

9.5. Subnet Addressing, 130

9.6. Flexibility In Subnet Address Assignment, 132

9.7. Variable-Length Subnets, 134

9.8. Implementation Of Subnets With Masks, 135

9.9. Subnet Mask Representation, 136

9.10. Forwarding In The Presence Of Subnets, 137

9.11. The Subnet Forwarding Algorithm, 138

9.12. A Unified Forwarding Algorithm, 139

9.13. Maintenance Of Subnet Masks, 140

9.14. Broadcasting To Subnets, 140

9.15. Anonymous Point-To-Point Networks, 141

9.16. Classless Addressing And Supernetting, 142

9.17. CIDR Address Blocks And Bit Masks, 143

9.18. Address Blocks And CIDR Notation, 144

9.19. A Classless Addressing Example, 145

9.20. Data Structures And Algorithms For Classless Lookup, 145

9.21. Longest-Match And Mixtures Of Route Types, 148

9.22. CIDR Blocks Reserved For Private Networks, 149

9.23. Summary, 150

For Further Study, 150

10. Protocol Layering, 155

10.1. Introduction, 155

10.2. The Need For Multiple Protocols, 155

10.3. The Conceptual Layers Of Protocol Software, 156

10.4. Functionality Of The Layers, 159

10.5. X.25 And Its Relation To The ISO Model, 160

10.6. Locus Of Intelligence, 163

10.7. The Protocol Layering Principle, 163

10.8. Layering In The Presence Of Network Substructure, 166

10.9. Two Important Boundaries In The TCP/IP Model, 168

10.10. The Disadvantage Of Layering, 169

10.11. The Basic Idea Behind Multiplexing And Demultiplexing, 170

10.12. Summary, 171

For Further Study, 172

11. User Datagram Protocol (UDP), 175

11.1. Introduction, 175

11.2. Identifying The Ultimate Destination, 175

11.3. The User Datagram Protocol, 176

11.4. Format Of UDP Messages, 177

11.5. UDP Pseudo-Header, 178

11.6. UDP Encapsulation And Protocol Layering, 179

11.7. Layering And The UDP Checksum Computation, 181

11.8. UDP Multiplexing, Demultiplexing, And Ports, 181

11.9. Reserved And Available UDP Port Numbers, 182

11.10. Summary, 184

For Further Study, 184

12. Reliable Stream Transport Service (TCP), 187

12.1. Introduction, 187

12.2. The Need For Stream Delivery, 187

12.3. Properties Of The Reliable Delivery Service, 188

12.4. Providing Reliability, 189

12.5. The Idea Behind Sliding Windows, 191

12.6. The Transmission Control Protocol, 193

12.7. Ports, Connections, And Endpoints, 194

12.8. Passive And Active Opens, 196

12.9. Segments, Streams, And Sequence Numbers, 197

12.10. Variable Window Size And Flow Control, 198

12.11. TCP Segment Format, 199

12.12. Out Of Band Data, 200

12.13. TCP Options, 201

12.14. TCP Checksum Computation, 203

12.15. Acknowledgements, Retransmission, And Timeouts, 204

12.16. Accurate Measurement Of Round Trip Samples, 207

12.17. Karn’s Algorithm And Timer Backoff, 208

12.18. Responding To High Variance In Delay, 209

12.19. Response To Congestion, 211

12.20. Fast Recovery And Other Modifications, 213

12.21. Explicit Feedback Mechanisms (SACK and ECN), 215

12.22. Congestion, Tail Drop, And TCP, 216

12.23. Random Early Detection (RED), 217

12.24. Establishing A TCP Connection, 219

12.25. Initial Sequence Numbers, 220

12.26. Closing a TCP Connection, 221

12.27. TCP Connection Reset, 222

12.28. TCP State Machine, 222

12.29. Forcing Data Delivery, 224

12.30. Reserved TCP Port Numbers, 224

12.31. TCP Performance, 225

12.32. Silly Window Syndrome And Small Packets, 226

12.33. Avoiding Silly Window Syndrome, 227

12.34. Summary, 230

For Further Study, 231

13. Routing Architecture: Cores, Peers, And Algorithms, 235

13.1. Introduction, 235

13.2. The Origin Of Routing Tables, 236

13.3. Forwarding With Partial Information, 237

13.4. Original Internet Architecture And Cores, 238

13.5. Beyond The Core Architecture To Peer Backbones, 240

13.6. Automatic Route Propagation, 241

13.7. Distance Vector (Bellman-Ford) Routing, 241

13.8. Reliability And Routing Protocols, 243

13.9. Link-State (SPF) Routing, 243

13.10. Summary, 244

For Further Study, 245

14. Routing Between Peers (BGP), 249

14.1. Introduction, 249

14.2. Routing Update Protocol Scope, 249

14.3. Determining A Practical Limit On Group Size, 250

14.4. A Fundamental Idea: Extra Hops, 251

14.5. Autonomous System Concept, 253

14.6. Exterior Gateway Protocols And Reachability, 254

14.7. BGP Characteristics, 255

14.8. BGP Functionality And Message Types, 256

14.9. BGP Message Header, 256

14.10. BGP OPEN Message, 257

14.11. BGP UPDATE Message, 259

14.12. Compressed Mask-Address Pairs, 259

14.13. BGP Path Attributes, 260

14.14. BGP KEEPALIVE Message, 262

14.15. Information From The Receiver’s Perspective, 262

14.16. The Key Restriction Of Exterior Gateway Protocols, 263

14.17. The Internet Routing Architecture, 265

14.18. BGP NOTIFICATION Message, 266

14.19. Summary, 267

For Further Study, 268

15. Routing Within An Autonomous System (RIP, OSPF), 271

15.1. Introduction, 271

15.2. Static Vs. Dynamic Interior Routes, 271

15.3. Routing Information Protocol (RIP), 274

15.4. Slow Convergence Problem, 276

15.5. Solving The Slow Convergence Problem, 277

15.6. RIP1 Message Format, 278

15.7. RIP2 Address Conventions, 280

15.8. RIP Route Interpretation And Aggregation, 280

15.9. RIP2 Extensions And Message Format, 281

15.10. The Disadvantage Of RIP Hop Counts, 282

15.11. Delay Metric (HELLO), 283

15.12. Delay Metrics And Oscillation, 283

15.13. Combining RIP, Hello, And BGP, 285

15.14. Gated: Inter-Autonomous System Communication, 286

15.15. The Open SPF Protocol (OSPF), 286

15.16. Routing With Partial Information, 293

15.17. Summary, 293

For Further Study, 294

16. Internet Multicasting, 297

16.1. Introduction, 297

16.2. Hardware Broadcast, 297

16.3. Hardware Origins Of Multicast, 298

16.4. Ethernet Multicast, 299

16.5. IP Multicast, 299

16.6. The Conceptual Pieces, 300

16.7. IP Multicast Addresses, 301

16.8. Multicast Address Semantics, 302

16.9. Mapping IP Multicast To Ethernet Multicast, 303

16.10. Hosts And Multicast Delivery, 303

16.11. Multicast Scope, 304

16.12. Extending Host Software To Handle Multicasting, 305

16.13. Internet Group Management Protocol, 305

16.14. IGMP Implementation, 306

16.15. Group Membership State Transitions, 308

16.16. IGMP Membership Query Message Format, 309

16.17. IGMP Membership Report Message Format, 310

16.18. Multicast Forwarding And Routing Information, 312

16.19. Basic Multicast Forwarding Paradigms, 313

16.20. Consequences Of TRPF, 315

16.21. Multicast Trees, 317

16.22. The Essence Of Multicast Route Propagation, 318

16.23. Reverse Path Multicasting, 318

16.24. Multicast Routing Protocols, 319

16.25. Reliable Multicast And ACK Implosions, 322

16.26. Summary, 323

For Further Study, 324

17. IP Switching And MPLS, 327

17.1. Introduction, 327

17.2. Switching Technology, 327

17.3. Large Networks, Label Swapping, And Paths, 328

17.4. Using Switching With IP, 329

17.5. IP Switching Technologies And MPLS, 330

17.6. Classification, Flows, And Higher Layer Switching, 331

17.7. Hierarchical Use Of MPLS, 331

17.8. MPLS Encapsulation, 332

17.9. Label Switching Router, 333

17.10. Control Processing And Label Distribution, 334

17.11. MPLS And Fragmentation, 334

17.12. Mesh Topology And Traffic Engineering, 335

17.13. Summary, 336

For Further Study, 336

18. Mobile IP, 339

18.1. Introduction, 339

18.2. Mobility, Routing, and Addressing, 339

18.3. Mobile IP Characteristics, 340

18.4. Overview Of Mobile IP Operation, 340

18.5. Mobile Addressing Details, 341

18.6. Foreign Agent Discovery, 341

18.7. Agent Registration, 342

18.8. Registration Message Format, 343

18.9. Communication With A Foreign Agent, 344

18.10. Datagram Transmission And Reception, 344

18.11. The Two-Crossing Problem, 345

18.12. Communication With Computers On the Home Network, 346

18.13. Summary, 346

For Further Study, 347

19. Private Network Interconnection (NAT, VPN), 349

19.1. Introduction, 349

19.2. Private And Hybrid Networks, 349

19.3. VPN Addressing And Routing, 351

19.4. Extending VPN Technology To Individual Hosts, 352

19.5. A VPN With Private Addresses, 352

19.6. Network Address Translation (NAT), 353

19.7. NAT Translation Table Creation, 354

19.8. Multi-Address NAT, 355

19.9. Port-Mapped NAT, 356

19.10. Interaction Between NAT And ICMP, 357

19.11. Interaction Between NAT And Applications, 358

19.12. NAT In The Presence Of Fragmentation, 358

19.13. Conceptual Address Domains, 359

19.14. Slirp And Iptables, 359

19.15. Summary, 360

For Further Study, 360

20. Client-Server Model Of Interaction, 363

20.1. Introduction, 363

20.2. The Client-Server Model, 363

20.3. A Simple Example: UDP Echo Server, 364

20.4. Time And Date Service, 366

20.5. The Complexity of Servers, 366

20.6. Broadcasting A Request, 368

20.7. Alternatives To The Client-Server Model, 368

20.8. Summary, 369

For Further Study, 369

21. The Socket Interface, 373

21.1. Introduction, 373

21.2. The UNIX I/O Paradigm And Network I/O, 373

21.3. Adding Network I/O to UNIX, 374

21.4. The Socket Abstraction, 375

21.5. Creating A Socket, 375

21.6. Socket Inheritance And Termination, 375

21.7. Specifying A Local Address, 376

21.8. Connecting Sockets To Destination Addresses, 377

21.9. Sending Data Through A Socket, 378

21.10. Receiving Data Through A Socket, 380

21.11. Obtaining Local And Remote Socket Addresses, 381

21.12. Obtaining And Setting Socket Options, 382

21.13. Specifying A Queue Length For A Server, 383

21.14. How A Server Accepts Connections, 383

21.15. Servers That Handle Multiple Services, 384

21.16. Obtaining And Setting Host Names, 385

21.17. Obtaining And Setting The Internal Host Domain, 386

21.18. Socket Library Calls, 386

21.19. Network Byte Order Conversion Routines, 387

21.20. IP Address Manipulation Routines, 389

21.21. Accessing The Domain Name System, 390

21.22. Obtaining Information About Hosts, 391

21.23. Obtaining Information About Networks, 392

21.24. Obtaining Information About Protocols, 393

21.25. Obtaining Information About Network Services, 393

21.26. An Example Client, 394

21.27. An Example Server, 396

21.28. Summary, 399

For Further Study, 400

22. Bootstrap And Autoconfiguration (DHCP), 403

22.1. Introduction, 403

22.2. History Of Bootstrapping, 403

22.3. Using IP To Determine An IP Address, 404

22.4. The DHCP Retransmission Policy, 405

22.5. The DHCP Message Format, 405

22.6. The Need For Dynamic Configuration, 408

22.7. DHCP Lease Concept, 409

22.8. Multiple Addresses And Relays, 409

22.9. Address Acquisition States, 410

22.10. Early Lease Termination, 411

22.11. Lease Renewal States, 412

22.12. DHCP Options And Message Type, 413

22.13. Option Overload, 414

22.14. DHCP And Domain Names, 414

22.15. Summary, 414

For Further Study, 415

23. The Domain Name System (DNS), 419

23.1. Introduction, 419

23.2. Names For Machines, 420

23.3. Flat Namespace, 420

23.4. Hierarchical Names, 421

23.5. Delegation Of Authority For Names, 422

23.6. Subset Authority, 422

23.7. Internet Domain Names, 423

23.8. Top-Level Domains, 424

23.9. Name Syntax And Type, 426

23.10. Mapping Domain Names To Addresses, 427

23.11. Domain Name Resolution, 429

23.12. Efficient Translation, 430

23.13. Caching: The Key To Efficiency, 431

23.14. Domain Name System Message Format, 431

23.15. Compressed Name Format, 435

23.16. Abbreviation Of Domain Names, 435

23.17. Inverse Mappings, 436

23.18. Pointer Queries, 437

23.19. Object Types And Resource Record Contents, 437

23.20. Obtaining Authority For A Subdomain, 439

23.21. Dynamic DNS Update And Notification, 439

23.22. DNS Security Extensions (DNSSEC), 440

23.23. Summary, 441

For Further Study, 441

24. Remote Login And Desktop (TELNET, SSH), 445

24.1. Introduction, 445

24.2. Remote Interactive Computing, 445

24.3. TELNET Protocol, 446

24.4. Accommodating Heterogeneity, 448

24.5. Passing Commands That Control The Remote Side, 449

24.6. Forcing The Server To Read A Control Function, 450

24.7. TELNET Options, 452

24.8. TELNET Option Negotiation, 452

24.9. Secure Shell (SSH), 453

24.10. Other Remote Access Technologies, 455

24.11. Summary, 455

For Further Study, 456

25. File Transfer And Access (FTP, TFTP, NFS), 459

25.1. Introduction, 459

25.2. Remote File Access, Transfer, And Storage Networks, 459

25.3. On-line Shared Access, 460

25.4. Sharing By File Transfer, 461

25.5. FTP: The Major TCP/IP File Transfer Protocol, 461

25.6. FTP Features, 461

25.7. FTP Process Model, 462

25.8. TCP Port Numbers And Data Connections, 463

25.9. The User’s View Of FTP, 464

25.10. Anonymous FTP, 464

25.11. Secure File Transfer (SSL-FTP, Scp, Sftp), 464

25.12. TFTP, 465

25.13. NFS, 467

25.14. Implementation Of NFS (RPC And XDR), 468

25.15. Summary, 469

For Further Study, 469

26. Electronic Mail (SMTP, POP, IMAP, MIME), 473

26.1. Introduction, 473

26.2. Electronic Mail, 473

26.3. Mailbox Names And Aliases, 474

26.4. Alias Expansion And Mail Forwarding, 475

26.5. TCP/IP Standards For Electronic Mail Service, 476

26.6. Simple Mail Transfer Protocol (SMTP), 477

26.7. Mail Retrieval And Mailbox Manipulation Protocols, 479

26.8. The MIME Extensions For Non-ASCII Data, 480

26.9. MIME Multipart Messages, 482

26.10. Summary, 483

For Further Study, 483

27. World Wide Web (HTTP), 487

27.1. Introduction, 487

27.2. Importance Of The Web, 487

27.3. Architectural Components, 488

27.4. Uniform Resource Locators, 488

27.5. An Example Document, 489

27.6. Hypertext Transfer Protocol, 490

27.7. HTTP GET Request, 490

27.8. Error Messages, 491

27.9. Persistent Connections And Lengths, 492

27.10. Data Length And Program Output, 492

27.11. Length Encoding And Headers, 493

27.12. Negotiation, 494

27.13. Conditional Requests, 495

27.14. Proxy Servers And Caching, 495

27.15. Caching, 496

27.16. Other HTTP Functionality, 497

27.17. HTTP, Security, And E-Commerce, 497

27.18. Summary, 498

For Further Study, 498

28. Voice And Video Over IP (RTP, RSVP, QoS), 501

28.1. Introduction, 501

28.2. Digitizing And Encoding, 501

28.3. Audio And Video Transmission And Reproduction, 502

28.4. Jitter And Playback Delay, 503

28.5. Real-time Transport Protocol (RTP), 504

28.6. Streams, Mixing, And Multicasting, 505

28.7. RTP Encapsulation, 506

28.8. RTP Control Protocol (RTCP), 506

28.9. RTCP Operation, 506

28.10. IP Telephony And Signaling, 508

28.11. Quality Of Service Controversy, 510

28.12. QoS, Utilization, And Capacity, 511

28.13. IntServ Resource Reservation (RSVP), 511

28.14. IntServ Enforcement (COPS), 512

28.15. DiffServ And Per-Hop Behavior, 513

28.16. Traffic Scheduling, 513

28.17. Traffic Policing, 515

28.18. Summary, 515

For Further Study, 516

29. Network Management (SNMP), 519

29.1. Introduction, 519

29.2. The Level Of Management Protocols, 519

29.3. Architectural Model, 520

29.4. Protocol Framework, 522

29.5. Examples of MIB Variables, 523

29.6. The Structure Of Management Information, 524

29.7. Formal Definitions Using ASN.1, 525

29.8. Structure And Representation Of MIB Object Names, 525

29.9. Simple Network Management Protocol, 530

29.10. SNMP Message Format, 532

29.11. An Example Encoded SNMP Message, 535

29.12. New Features In SNMPv3, 538

29.13. Summary, 538

For Further Study, 539

30. Internet Security And Firewall Design (IPsec, SSL), 543

30.1. Introduction, 543

30.2. Protecting Resources, 544

30.3. Information Policy, 545

30.4. Internet Security, 545

30.5. IP Security (IPsec), 546

30.6. IPsec Authentication Header, 546

30.7. Security Association, 547

30.8. IPsec Encapsulating Security Payload, 548

30.9. Authentication And Mutable Header Fields, 549

30.10. IPsec Tunneling, 550

30.11. Required Security Algorithms, 550

30.12. Secure Sockets (SSL and TLS), 551

30.13. Firewalls And Internet Access, 551

30.14. Multiple Connections And Weakest Links, 552

30.15. Firewall Implementation And Packet Filters, 552

30.16. Security And Packet Filter Specification, 553

30.17. The Consequence Of Restricted Access For Clients, 554

30.18. Stateful Firewalls, 554

30.19. Content Protection And Proxies, 555

30.20. Monitoring And Logging, 556

30.21. Summary, 556

For Further Study, 557

31. A Next Generation IP (IPv6), 561

31.1. Introduction, 561

31.2. Why Change?, 561

31.3. Beyond IPv4, 562

31.4. The Road To A New Version Of IP, 562

31.5. The Name Of The Next IP, 562

31.6. Features Of IPv6, 563

31.7. General Form Of An IPv6 Datagram, 564

31.8. IPv6 Base Header Format, 564

31.9. IPv6 Extension Headers, 566

31.10. Parsing An IPv6 Datagram, 566

31.11. IPv6 Fragmentation And Reassembly, 567

31.12. The Consequence Of End-To-End Fragmentation, 568

31.13. IPv6 Source Routing, 569

31.14. IPv6 Options, 569

31.15. Size Of The IPv6 Address Space, 571

31.16. IPv6 Colon Hexadecimal Notation, 571

31.18. The Duality Of Broadcast And Multicast, 573

31.19. An Engineering Choice And Simulated Broadcast, 573

31.20. Proposed IPv6 Address Space Assignment, 574

31.21. Embedded IPv4 Addresses And Transition, 574

31.22. Unspecified And Loopback Addresses, 576

31.23. Unicast Address Structure, 577

31.24. Interface Identifiers, 577

31.25. Local Addresses, 578

31.26. Autoconfiguration And Renumbering, 578

31.27. Summary, 579

For Further Study, 580

1. A Look At RFCs, 582

Introduction, 582

Importance Of Host And Gateway Requirements Documents, 583

RFC Numerology, 584

Browsing Through RFCs, 584

How To Obtain An RFC Over The Internet, 585

2. Glossary Of Internetworking Terms And Abbreviations, 586

TCP/IP Terminology, 586

A Glossary of Terms and Abbreviations In Alphabetical Order, 587

Bibliography, 624

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ABOUT THIS TITLE - DESCRIPTION

For junior to graduate-level courses in Computer Networks, Data Networks, Network Protocols, and Internetworking. This best-selling, conceptual introduction to TCP/IP internetworking protocols interweaves a clear discussion of fundamentals with the latest technologies. Leading author Doug Comer covers layering and shows how all protocols in the TCP/IP suite fit into the five-layer model. With a new focus on CIDR addressing, this revision addresses MPLS and IP switching technology, traffic scheduling, VOIP, Explicit Congestion Notification (ECN), and Selective ACKnowledgement (SACK).

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