Anthony Bruno, CCIE No. 2738, is an architect and technical resource manager with British Telecom (BT) with more than 27 years of experience in the internetworking field. Previously, he worked for International Network Services (INS) and Lucent Technologies, and he was a captain in the U.S. Air Force. He has consulted for many enterprise and service provider customers in the design, implementation, and optimization of large scale networks. Anthony leads architecture and design teams in building next-generation networks for customers.

Anthony completed a master of science degree in electrical engineering at the University of Missouri–Rolla in 1994 and a bachelor of science in electrical engineering at the University of Puerto Rico–Mayaguez in 1990. For the past 20 years, he has coauthored five editions of the CCDA Official Cert Guide for Cisco Press.

Outside work, Anthony enjoys running marathons and Spartan obstacle races, and he has finished seven Ironman distance triathlons. He is also an avid genealogist and ancestry tree researcher. Anthony also enjoys piloting his Mavic Pro drone during trips.

Steve Jordan, CCIE No. 11293, is a Principal Architect with J. Network Architects and has 23 years of experience in the field of internetworking. For the last 13 years, Steve has specialized in data center and network security architectures involving compute, network, security,storage, and virtualization. Over the years, Steve has consulted with many enterprise and service provider customers in both pre-sales and post-sales engineering and architecture roles, along with working at several Cisco Gold Partners. He has extensive experience in data center and security architecture design and has implemented solutions in many financial, energy, retail, healthcare,education, and telecommunications industries. Steve is a 15-Year triple CCIE in the tracks of Routing & Switching, Storage Networking, and Data Center. His other certifications include CCNA, CCNP Enterprise, VMware VCIX6-NV, and VCP6-NV.

Steve lives in Houston, Texas; and when he is not working on technology, Steve can be found traveling to new places, home brewing, and trading stocks.

For the past 14 years, Steve was also the coauthor for three editions of the CCDA Official Cert Guide.

Chapter 1 Internet Protocol Version 4 (IPv4) Design 2 “Do I Know This Already?” Quiz 2 Foundation Topics 4 IPv4 Header 5 IPv4 Addressing 10 IPv4 Address Subnets 16 IPv4 Addressing Design 23 Address Assignment and Name Resolution 29 References and Recommended Readings 35 Exam Preparation Tasks 36 Review All Key Topics 36 Complete Tables and Lists from Memory 37 Define Key Terms 37 Q&A 37 Chapter 2 Internet Protocol Version 6 (IPv6) Design 44 “Do I Know This Already?” Quiz 44 Foundation Topics 47 Introduction to IPv6 47 IPv6 Header 49 IPv6 Address Representation 50 IPv6 Address Scope Types and Address Allocations 52 IPv6 Mechanisms 58 IPv6 Routing Protocols 64 IPv4-to-IPv6 Migration Strategies and Deployment Models 67 References and Recommended Readings 77 Exam Preparation Tasks 79 Review All Key Topics 79 Complete Tables and Lists from Memory 80 Define Key Terms 80 Q&A 80 Chapter 3 Routing Protocol Characteristics, EIGRP, and IS-IS 90 “Do I Know This Already?” Quiz 90 Foundation Topics 92 Routing Protocol Characteristics 92 Routing Protocol Metrics and Loop Prevention 100 EIGRP 105 IS-IS 115 References and Recommended Readings 121 Exam Preparation Tasks 121 Review All Key Topics 122 Complete Tables and Lists from Memory 122 Define Key Terms 122 Q&A 122 Chapter 4 OSPF, BGP, and Route Manipulation 132 “Do I Know This Already?” Quiz 132 Foundation Topics 134 OSPFv2 134 OSPFv3 144 BGP 147 Route Manipulation 161 References and Recommended Readings 168 Exam Preparation Tasks 169 Review All Key Topics 169 Complete Tables and Lists from Memory 170 Define Key Terms 170 Q&A 170 Chapter 5 IP Multicast and Network Management 178 “Do I Know This Already?” Quiz 178 Foundation Topics 180 IP Multicast Review 180 Network Management Design 188 References and Recommended Readings 200 Exam Preparation Tasks 202 Review All Key Topics 202 Complete Tables and Lists from Memory 203 Define Key Terms 203 Q&A 203 Chapter 6 Enterprise LAN Design and Technologies 210 “Do I Know This Already?” Quiz 210 Foundation Topics 211 Hierarchical Network Models 212 LAN Media 221 Spanning Tree Protocol Design Considerations 228 References and Recommended Readings 233 Exam Preparation Tasks 234 Review All Key Topics 234 Complete Tables and Lists from Memory 234 Define Key Terms 234 Q&A 234 Chapter 7 Advanced Enterprise Campus Design 242 “Do I Know This Already?” Quiz 242 Foundation Topics 244 Campus LAN Design and Best Practices 244 High Availability Network Services 252 References and Recommended Readings 264 Exam Preparation Tasks 264 Review All Key Topics 264 Complete Tables and Lists from Memory 264 Define Key Terms 264 Q&A 265 Chapter 8 WAN for the Enterprise 272 “Do I Know This Already?” Quiz 272 Foundation Topics 274 WAN Overview 274 WAN Transport Technologies 276 Site-to-Site VPN Design 284 References and Recommended Readings 291 Exam Preparation Tasks 292 Review All Key Topics 292 Complete Tables and Lists from Memory 293 Define Key Terms 293 Q&A 293 Chapter 9 WAN Availability and QoS 298 “Do I Know This Already?” Quiz 298 Foundation Topics 300 WAN Design Methodologies 300 Design for High Availability 303 Internet Connectivity 307 Backup Connectivity 309 QoS Strategies 310 Designing End-to-End QoS Policies 312 References and Recommended Readings 315 Exam Preparation Tasks 316 Review All Key Topics 316 Complete Tables and Lists from Memory 316 Define Key Terms 317 Q&A 317 Chapter 10 SD-Access Design 322 “Do I Know This Already?” Quiz 322 Foundation Topics 324 SD-Access Architecture 324 SD-Access Fabric Design Considerations for Wired and Wireless Access 332 References and Recommended Readings 340 Exam Preparation Tasks 341 Review All Key Topics 341 Complete Tables and Lists from Memory 342 Define Key Terms 342 Q&A 342 Chapter 11 SD-WAN Design 348 “Do I Know This Already?” Quiz 348 Foundation Topics 350 SD-WAN Architecture 350 SD-WAN Design Considerations 356 References and Recommended Readings 366 Exam Preparation Tasks 366 Review All Key Topics 366 Complete Tables and Lists from Memory 367 Define Key Terms 367 Q&A 367 Chapter 12 Automation 374 “Do I Know This Already?” Quiz 374 Foundation Topics 376 Introduction to Network APIs and Protocols 376 YANG, NETCONF, and RESTCONF Explored 380 IETF, OpenConfig, and Cisco YANG Models 386 Model-Driven Telemetry 387 References and Recommended Readings 391 Exam Preparation Tasks 392 Review All Key Topics 392 Complete Tables and Lists from Memory 393 Define Key Terms 393 Q&A 393 Chapter 13 Final Preparation 398 Getting Ready 398 Tools for Final Preparation 399 Suggested Plan for Final Review/Study 402 Summary 402 Appendix A Answers to the “Do I Know This Already?” Quiz Questions Q&A Questions 404 Appendix B CCNP Enterprise Design ENSLD 300-420 Official Cert Guide Exam Updates 428 Appendix C OSI Model, TCP/IP Architecture, and Numeric Conversion 430 Glossary 445 Online Elements: Appendix D Memory Tables Appendix E Memory Tables A Appendix F: Study Planner TOC, 9780136575191, 6/4/2020