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IPv6 Fundamentals: A Straightforward Approach to Understanding IPv6


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  • Takes students s on a "journey" from the absolute basics of IPv6 to successful operation and implementation: explains everything, and leaves no confusing gaps in understanding
  • Uses a single consistent topology throughout, to promote comprehension
  • Authored by one of the Cisco Networking Academy's most popular and experienced instructors, reflecting extensive classroom experience

  • Copyright 2013
  • Edition: 1st
  • Book
  • ISBN-10: 1-58714-313-5
  • ISBN-13: 978-1-58714-313-7

To support future business continuity, growth, and innovation, organizations must transition to IPv6, the next generation protocol for defining how computers communicate over networks. IPv6 Fundamentals provides a thorough yet easy-to-understand introduction to the new knowledge and skills network professionals and students need to deploy and manage IPv6 networks.

Leading networking instructor Rick Graziani explains all the basics simply and clearly, one step at a time, providing all the details you’ll need to succeed. Building on this introductory coverage, he then introduces more powerful techniques that involve multiple protocols and processes and provides hands-on resources you can rely on for years to come.

You’ll begin by learning why IPv6 is necessary, how it was created, and how it works. Next, Graziani thoroughly introduces IPv6 addressing, configuration options, and routing protocols, including RIPng, EIGRP for IPv6, and OSPFv3. You’ll learn how to integrate IPv6 with IPv4, enabling both protocols to coexist smoothly as you move towards full reliance on IPv6.

Throughout, Graziani presents all the IOS command syntax you’ll need, offering specific examples, diagrams, and Cisco-focused IPv6 configuration tips. You’ll also find links to Cisco white papers and official IPv6 RFCs that support an even deeper understanding.

Rick Graziani teaches computer science and computer networking courses at Cabrillo College. He has worked and taught in the computer networking and IT field for nearly 30 years, and currently consults for Cisco and other leading clients. Graziani’s recent Cisco Networking Academy Conference presentation on IPv6 Fundamentals and Routing drew a standing audience and the largest virtual audience for any session at the event. He previously worked for companies including Santa Cruz Operation, Tandem Computers, and Lockheed.

·         Understand how IPv6 overcomes IPv4’s key limitations

·         Compare IPv6 with IPv4 to see what has changed and what hasn’t

·         Represent IPv6 addresses, including subnet addresses

·         Enable IPv6 on router interfaces using static, dynamic, EUI-64, unnumbered, SLAAC, and DHCPv6 approaches

·         Improve network operations with ICMPv6 and Neighbor Discovery Protocol

·         Configure IPv6 addressing and Access Control Lists using a common topology

·         Work with IPv6 routing tables and configure IPv6 static routes

·         Compare, configure, and verify each IPv6 IGP routing protocol

·         Implement stateful and stateless DHCPv6 services

·         Integrate IPv6 with other upper-level protocols, including DNS, TCP, and UDP

·         Use dual-stack techniques to run IPv4 and IPv6 on the same device

·         Establish coexistence between IPv4 and IPv6 through manual, 6to4, or ISATAP tunneling

·         Promote a smooth transition with NAT64 (Network Address Translation IPv6 to IPv4)


This book is part of the Cisco Press Fundamentals Series. Books in this series introduce networking professionals to new networking technologies, covering network topologies, sample deployment concepts, protocols, and management techniques.

Sample Pages

Download the sample pages (includes Chapter 3 and Index)

Table of Contents

    Introduction xvi

Part I: Background Justification and Perspective for IPv6

Chapter 1 Introduction to IPv6 1

    IPv4 1

    Early Years of the Internet 2

    IPv5 5

    History of IPv6 5

    Benefits of IPv6 7

    IPv6: When? 8

    IPv4 Address Depletion 9

        CIDR 10

        NAT and Private Addresses 12

        Exhaustion of IPv4 Address Space 15

    Migrating to IPv6 17

Chapter 2 The IPv6 Protocol 23

    IPv4 Header 23

    IPv6 Header 27

    Packet Analysis Using Wireshark 31

    Extension Headers 33

        Hop-by-Hop Options Extension Header 36

        Routing Extension Header 38

        Fragment Extension Header 39

        IPsec: AH and ESP Extension Headers 40

        IPsec 40

        Transport and Tunnel Modes 41

        Encapsulating Security Payload (ESP) Extension Header 42

        Authentication Header (AH) Extension Header 43

        Destination Options Extension Header 45

        No Next Header 46

    Comparing IPv4 and IPv6 46

        IPv4 and IPv6 Header Comparisons 46

        Other Differences 47

        Larger Maximum Transmission Unit (MTU) 47

        User Datagram Protocol (UDP) 48

        Fragmentation 48

Part II: IPv6: The Protocol

Chapter 3 IPv6 Addressing 51

    Hexadecimal Number System 51

    Representation of IPv6 Addresses 54

        Rule 1: Omission of Leading 0s 55

        Rule 2: Omission of all-0s hextets 57

        Combining Rule 1 and Rule 2 58

    Prefix Notation 60

    Brief Look at IPv6 Address Types 63

        Unicast Addresses 63

        Anycast Addresses 64

        Multicast Addresses 64

    Structure of a Global Unicast Address 64

        Global Routing Prefix 65

        Subnet ID 65

        Interface ID 65

        3-1-4 Rule 65

    Putting It Together 67

    Subnetting 71

        Extending the Subnet Prefix 73

        Subnetting on a Nibble Boundary 75

        Subnetting Within a Nibble 76

        Limiting the Interface ID Space 77

Chapter 4 IPv6 Address Types 81

    IPv6 Address Space 82

    Unicast Address 84

        Global Unicast Address 85

        Manual Global Unicast Configuration 87

        Dynamic Configuration 99

        Link-local Unicast 107

        Dynamic Link-local Address: EUI-64 109

        Randomly Generated Interface IDs 110

        Static Link-local Address 111

        Link-local Addresses and Duplicate Address Detection 114

        Link-local Addresses and Default Gateways 115

        Isolated Link-local Address 116

        Loopback Address 116

        Unspecified Address 118

        Unique Local Address 119

        IPv4 Embedded Address 121

        IPv4-Compatible IPv6 Addresses 122

        IPv4-Mapped IPv6 Addresses 123

    Multicast 124

        Assigned Multicast Addresses 127

    Solicited-Node Multicast Addresses 130

    Anycast Address 132

Chapter 5 ICMPv6 and Neighbor Discovery Protocol 139

    General Message Format 140

    ICMP Error Messages 144

        Destination Unreachable 145

        Packet Too Big 146

        Path MTU Discovery 147

        Time Exceeded 148

        Parameter Problem 149

    ICMP Informational Messages 149

        Echo Request and Echo Reply 150

        Pinging a Global Unicast Address 151

        Pinging a Link-local Address 153

        Multicast Listener Discovery 155

    Neighbor Discovery Protocol 159

        Router Solicitation and Router Advertisement Messages 160

        Neighbor Solicitation and Neighbor Advertisement Messages 169

        Neighbor Cache and Destination Cache 172

        Address Resolution 174

        Duplicate Address Detection 180

        Neighbor Unreachability Detection 182

        Stateless Address Autoconfiguration 182

        Redirect Messages 184

Chapter 6 IPv6 Configuration 191

    Configuring Global Unicast Addresses 193

    Configuring Link-local Addresses 195

    The ipv6 enable Command 199

    Configuring a Global Unicast Address with the EUI-64 Option 200

    Removing an IPv6 Address 202

    Enabling IPv6 Packet Forwarding and ND Router Advertisements 203

    Neighbor Cache 205

    Tuning Neighbor Discovery Parameters 207

    Final Configurations 213

    IPv6 Access Control Lists 216

        Denying Access from FACE:C0DE to CAFE 217

        Permitting Local Telnet Access 221

Part III: Routing IPv6

Chapter 7 Introduction to Routing IPv6 227

    IPv6 Routing Table 228

        Code: Connected 231

        Code: Local 233

        Comparing IPv6 and IPv4 Routing Tables 234

    Configuring IPv6 Static Routes 237

        Changing the Administrative Distance 247

        Final Configurations and Verification 249

    CEF for IPv6 251

Chapter 8 IPv6 IGP Routing Protocols 255

    RIPng for IPv6 257

        Comparing RIPng for IPv6 and RIPv2 257

        Configuring RIPng on Cisco Routers 259

        Verifying RIPng 264

    EIGRP for IPv6 272

        Comparing EIGRP for IPv4 and EIGRP for IPv6 272

        Configuring EIGRP for IPv6 273

        Verifying EIGRP for IPv6 278

    OSPFv3 286

        Comparing OSPFv2 and OSPFv3 287

        Configuring OSPFv3 289

        Verifying OSPFv3 293

Chapter 9 DHCPv6 (Dynamic Host Configuration Protocol version 6) 303

    DHCPv6 Services 303

        DHCPv6 Terminology, Multicast Addresses, and Message Types 306

        DHCPv6 Communications 309

        Configuring Stateless DHCPv6 313

        Rapid Commit Option 318

        Configuring the Rapid Commit Option 319

        Relay Agent Communications 320

        Configuring the Relay Agent 322

    Other Upper-Layer Protocols 323

        DNS 323

        DNS Query and Response 326

        TCP and UDP 328

Chapter 10 Dual-Stack and Tunneling 333

    Dual-Stack 334

        IPv6 Address Format in URL Syntax 336

        Configuring a Dual-Stack Network 337

    Tunneling 344

        Manual Tunnels 349

        6to4 Tunnels 356

        6to4 Tunnels and Loopback Interfaces 364

        ISATAP 365

        Other Tunneling Technologies 373

Chapter 11 Network Address Translation IPv6 to IPv4 (NAT64) 377

    NAT64 378

        Traffic Initiated from IPv6-only Clients to IPv4-only Servers 379

        Configuration 383

        Traffic Initiated from IPv4-only Clients to IPv6-only Servers 387

    NAT-PT: Network Address Translation – Protocol Translation 389

        Application Level Gateway 390

        Using NAT-PT 391

        Static NAT-PT 394

        Dynamic NAT-PT 399

    Other Translation Techniques 402

9781587143137, TOC, 9/18/2012

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