A step-by-step guide to managing critical technologies of today's converged services IP networks Effective IP Address Management (IPAM) has become crucial to maintaining high-performing IP services such as data, video, and voice over IP. This book provides a concise introduction to the three core IPAM networking technologies?IPv4 and IPv6 addressing, Dynamic Host Configuration Protocol (DHCP), and Domain Name System (DNS)?as well as IPAM practice and techniques needed to manage them cohesively. The book begins with a basic overview of IP networking, including a discussion of protocol layering, addressing, and routing. After a review of the IPAM technologies, the book introduces the major components, motivation, benefits, and basic approaches of IPAM. Emphasizing the necessity of a disciplined "network management" approach to IPAM, the subsequent chapters enable you to: Understand IPAM practices, including managing your IP address inventory and tracking of address transactions (such as allocation and splitting address space, discovering network occupancy, and managing faults and performance) Weigh the costs and justifications for properly implementing an IPAM strategy Use various approaches to automating IPAM functions through workflow Learn about IPv4-IPv6 co-existence technologies and approaches Assess security issues with DHCP network access control approaches and DNS vulnerabilities and mitigation including DNSSEC Evaluate the business case for IPAM, which includes derivation of the business case cost basis, identification of savings when using an IP address management system, associated costs, and finally net results Introduction to IP Address Management concludes with a business case example, providing a real-world financial perspective of the costs and benefits of implementing an IP address management solution. No other book covers all these subjects cohesively from a network management perspective, which makes this volume imperative for manager-level networking professionals who need a broad understanding of both the technical and business aspects of IPAM. In addition, technologists interested in IP networking and address management will find this book valuable. To obtain a free copy of the IPAM Configuration Guide please send an email to: ieeeproposals@wiley.com

Table of Contents:
Preface ix Acknowledgments xiii 1 IP Networking Overview 1 IP Networking 101 1 IP Networking 102 9 Highlights of Internet Protocol History 21 2 Internet Protocol Addressing 25 The IP Header 25 Binary Review 25 IP Addressing 26 Classless Addressing 33 Special Use IPv4 Addresses 34 IP Version 6 (IPv6) 35 IPv6 Address Allocations 39 IPv6 Address Autoconfiguration 41 Required Host IPv6 Addresses 45 Regional Internet Registries 46 Key IP Addressing Management Challenges 49 3 Dynamic Host Configuration Protocol (DHCP) 53 Introduction 53 DHCP Overview 54 DHCP for IPv6 (DHCPv6) 59 DHCP Server Deployment Considerations 64 Other Means of Dynamic Address Assignment 67 Key DHCP Management Challenges 67 4 The Domain Name System (DNS) 69 DNS Overview—Domains and Resolution 69 Name Resolution 71 Zones and Domains 74 Resolver Configuration 79 DNS Update 80 Resource Records 80 DNS Server Deployment Considerations 82 Key DNS Management Challenges 84 5 IP Address Management Overview 85 Key Elements of IP Address Management 85 Applications of Address Management Technologies 87 Potential Impacts of Inadequate IP Address Management 95 IP Address Management as Network Management 95 IP Address Management Business Benefits 96 Common Approaches and IPAM Evolution 99 6 IP Address Management Practices 101 FCAPS Summary 101 Common IP Management Tasks 102 Configuration Management 102 Fault Management 122 Accounting Management 126 Performance Management 130 Security Management 132 Disaster Recovery/Business Continuity 133 ITIL® Process Mappings 134 7 IP Address Management Workflow 139 What Is Workflow? 140 Workflow Realization 144 Workflow Benefits 145 Workflow Scenarios 147 Summary 153 8 IPv6 Deployment and IPv4 Co-Existence 155 Why Implement IPv6? 156 Dual Stack Approach 157 Tunneling Approaches 160 Translation Approaches 164 9 Security Considerations 169 DHCP and Network Access Security 169 Network Access Control (NAC) 170 Alternative Access Control Approaches 175 Securing DHCP Servers 179 DNS Vulnerabilities 182 Mitigation Approaches 186 DNS Security Extensions (DNSSEC) 187 10 IP Address Management Business Case 197 Business Case Overview 198 Business Case Cost Basis 198 Savings with IPAM Deployment 221 Business Case Expenses 222 Netting It Out: Business Case Results 224 Conclusion 225 Appendix A IPv4 DHCP Options 227 Appendix B DHCPv6 Options 241 Appendix C DNS Resource Record Summary 249 Glossary 253 Bibliography 255 Index 261