Zig Zsiga, CCDE 2016::32, CCIE #44883, has been in the networking industry for 20 years. He is currently a principal architect supporting the Cisco CX US public sector business and customers. Zig holds an active CCDE and two CCIE certifications, one in Routing and Switching and the second in Service Provider. He also holds a bachelor of science in computer science from Park University. He is a father, a husband, a United States Marine, a gamer, a nerd, a geek, and a big soccer fan. Zig loves all technology and can usually be found in the lab learning and teaching others. This is his second published book, and he is also the host of the Zigbits Network Design Podcast (ZNDP), where he interviews leading industry experts about network design. All of Zig's content is located at https://zigbits.tech. Zig lives in Upstate New York, USA, with his wife, Julie, and their son, Gunnar.

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• Introduction xliPart I What is Network Design?Chapter 1 Network Design 2“Do I Know This Already?” Quiz 2Foundation Topics 4Network Design Fundamentals 6Network Design Techniques 21Network Design Pitfalls 36Summary 39Exam Preparation Tasks 39Review All Key Topics 39Complete Tables and Lists from Memory 40Define Key Terms 40Reference 40Chapter 2 Designing for Business Success 42“Do I Know This Already?” Quiz 42Foundation Topics 44Business Success 44Project Management 55Summary 64References 65Exam Preparation Tasks 65Review All Key Topics 65Complete Tables and Lists from Memory 65Define Key Terms 65Chapter 3 What's the Purpose of the Network? 66“Do I Know This Already?” Quiz 67Foundation Topics 69Business Applications 69Service Models 72The Cloud 73Data Management 80Summary 81Reference 81Exam Preparation Tasks 82Review All Key Topics 82Complete Tables and Lists from Memory 82Define Key Terms 82Chapter 4 Security Is Pervasive 84“Do I Know This Already?” Quiz 85Foundation Topics 87Zero Trust Architecture 91Security CIA Triad 95Regulatory Compliance 96Summary 98Reference 99Exam Preparation Tasks 99Review All Key Topics 99Complete Tables and Lists from Memory 100Define Key Terms 100Chapter 5 Reference Architecture Models and Frameworks 102“Do I Know This Already?” Quiz 102Foundation Topics 104Reference Architecture Models and Frameworks 104Summary 115Reference 116Exam Preparation Tasks 116Review All Key Topics 116Complete Tables and Lists from Memory 117Define Key Terms 117Part II Core Technology DesignChapter 6 Transport Technologies 118“Do I Know This Already?” Quiz 118Foundation Topics 120Layer 2 Media Access 120Virtual Private Wire Service Design Considerations 124EVPN Design Model 134Summary 142Reference 142Exam Preparation Tasks 143Review All Key Topics 143Complete Tables and Lists from Memory 143Define Key Terms 143Chapter 7 Layer 2 Technologies 144“Do I Know This Already?” Quiz 144Foundation Topics 147Layer 2 Core Technologies 147Layer 2 LAN Common Design Models 152STP-Based Models 152Summary 156Reference 156Exam Preparation Tasks 157Review All Key Topics 157Complete Tables and Lists from Memory 157Define Key Terms 157Chapter 8 Layer 3 Technologies 158“Do I Know This Already?” Quiz 159Foundation Topics 161Enterprise Layer 3 Routing 161BGP Routing 206Enterprise Routing Design Recommendations 225Summary 227Reference 227Exam Preparation Tasks 227Review All Key Topics 227Complete Tables and Lists from Memory 228Define Key Terms 228Chapter 9 Network Virtualization 230“Do I Know This Already?” Quiz 230Foundation Topics 232MPLS 232Software-Defined Networks 266Summary 275References 275Exam Preparation Tasks 276Review All Key Topics 276Complete Tables and Lists from Memory 276Define Key Terms 276Chapter 10 Security 278“Do I Know This Already?” Quiz 278Foundation Topics 280Infrastructure Security 281Perimeter Security and Intrusion Prevention 292Network Control and Identity Management 294Summary 298Reference 299Exam Preparation Tasks 299Review All Key Topics 299Complete Tables and Lists from Memory 299Define Key Terms 299Chapter 11 Wireless 300“Do I Know This Already?” Quiz 300Foundation Topics 303IEEE 802.11 Standards and Protocols 303Enterprise Wireless Network Design 309Summary 313Reference 313Exam Preparation Tasks 313Review All Key Topics 314Complete Tables and Lists from Memory 314Define Key Terms 314Chapter 12 Automation 316“Do I Know This Already?” Quiz 317Foundation Topics 318Zero-Touch Provisioning 318Infrastructure as Code 319CI/CD Pipelines 321Summary 324Reference 324Exam Preparation Tasks 324Review All Key Topics 324Complete Tables and Lists from Memory 325Define Key Terms 325Chapter 13 Multicast Design 326“Do I Know This Already?” Quiz 327Foundation Topics 329Multicast Switching 329Multicast Routing 332Multicast Design Considerations 344Summary 350References 351Exam Preparation Tasks 351Review All Key Topics 351Complete Tables and Lists from Memory 351Define Key Terms 351Chapter 14 Network Services and Management 352“Do I Know This Already?” Quiz 353Foundation Topics 355IPv6 Design Considerations 355Quality of Service Design Considerations 369Network Management 390Summary 400References 400Exam Preparation Tasks 400Review All Key Topics 400Complete Tables and Lists from Memory 401Define Key Terms 401Part III Enterprise Network ArchitecturesChapter 15 Scalable Enterprise Campus Architecture Design 402“Do I Know This Already?” Quiz 402Foundation Topics 404Campus Hierarchical Design Models 404Campus Layer 3 Routing Design Considerations 411Campus Network Virtualization Design Considerations 413Summary 425References 425Exam Preparation Tasks 425Review All Key Topics 425Complete Tables and Lists from Memory 426Define Key Terms 426Chapter 16 Enterprise Internet Edge Architecture Design 428“Do I Know This Already?” Quiz 428Foundation Topics 429Enterprise Internet Edge Design Considerations 429Summary 443References 443Exam Preparation Tasks 444Review All Key Topics 444Complete Tables and Lists from Memory 444Define Key Terms 444Chapter 17 Enterprise WAN Architecture Design 446“Do I Know This Already?” Quiz 446Foundation Topics 448Enterprise WAN Module 448WAN Virtualization and Overlays Design Considerations and Techniques 471Enterprise WAN Migration to MPLS VPN Considerations 484Migrating from Legacy WAN to MPLS L3VPN WAN Scenario 484WAN Transport Virtualization Techniques Comparison 485Summary 488References 488Exam Preparation Tasks 488Review All Key Topics 488Complete Tables and Lists from Memory 489Define Key Terms 489Chapter 18 Final Preparation 490Getting Ready 490Tools for Final Preparation 491Summary 494Appendix A Answers to the “Do I Know This Already” Questions 496Appendix B Cisco Certified Design Expert CCDE 400-007 Exam Updates 514Glossary 517  Online Elements:Appendix C Memory TablesAppendix D Memory Tables AnswersAppendix E Study Planner  9780137601042, TOC, 3/23/2023

Zig Zsiga, CCDE 2016::32, CCIE #44883, has been in the networking industry for 20 years. He is currently a principal architect supporting the Cisco CX US public sector business and customers. Zig holds an active CCDE and two CCIE certifications, one in Routing and Switching and the second in Service Provider. He also holds a bachelor of science in computer science from Park University. He is a father, a husband, a United States Marine, a gamer, a nerd, a geek, and a big soccer fan. Zig loves all technology and can usually be found in the lab learning and teaching others. This is his second published book, and he is also the host of the Zigbits Network Design Podcast (ZNDP), where he interviews leading industry experts about network design. All of Zig's content is located at https://zigbits.tech. Zig lives in Upstate New York, USA, with his wife, Julie, and their son, Gunnar.

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• Introduction xliPart I What is Network Design?Chapter 1 Network Design 2“Do I Know This Already?” Quiz 2Foundation Topics 4Network Design Fundamentals 6Network Design Techniques 21Network Design Pitfalls 36Summary 39Exam Preparation Tasks 39Review All Key Topics 39Complete Tables and Lists from Memory 40Define Key Terms 40Reference 40Chapter 2 Designing for Business Success 42“Do I Know This Already?” Quiz 42Foundation Topics 44Business Success 44Project Management 55Summary 64References 65Exam Preparation Tasks 65Review All Key Topics 65Complete Tables and Lists from Memory 65Define Key Terms 65Chapter 3 What's the Purpose of the Network? 66“Do I Know This Already?” Quiz 67Foundation Topics 69Business Applications 69Service Models 72The Cloud 73Data Management 80Summary 81Reference 81Exam Preparation Tasks 82Review All Key Topics 82Complete Tables and Lists from Memory 82Define Key Terms 82Chapter 4 Security Is Pervasive 84“Do I Know This Already?” Quiz 85Foundation Topics 87Zero Trust Architecture 91Security CIA Triad 95Regulatory Compliance 96Summary 98Reference 99Exam Preparation Tasks 99Review All Key Topics 99Complete Tables and Lists from Memory 100Define Key Terms 100Chapter 5 Reference Architecture Models and Frameworks 102“Do I Know This Already?” Quiz 102Foundation Topics 104Reference Architecture Models and Frameworks 104Summary 115Reference 116Exam Preparation Tasks 116Review All Key Topics 116Complete Tables and Lists from Memory 117Define Key Terms 117Part II Core Technology DesignChapter 6 Transport Technologies 118“Do I Know This Already?” Quiz 118Foundation Topics 120Layer 2 Media Access 120Virtual Private Wire Service Design Considerations 124EVPN Design Model 134Summary 142Reference 142Exam Preparation Tasks 143Review All Key Topics 143Complete Tables and Lists from Memory 143Define Key Terms 143Chapter 7 Layer 2 Technologies 144“Do I Know This Already?” Quiz 144Foundation Topics 147Layer 2 Core Technologies 147Layer 2 LAN Common Design Models 152STP-Based Models 152Summary 156Reference 156Exam Preparation Tasks 157Review All Key Topics 157Complete Tables and Lists from Memory 157Define Key Terms 157Chapter 8 Layer 3 Technologies 158“Do I Know This Already?” Quiz 159Foundation Topics 161Enterprise Layer 3 Routing 161BGP Routing 206Enterprise Routing Design Recommendations 225Summary 227Reference 227Exam Preparation Tasks 227Review All Key Topics 227Complete Tables and Lists from Memory 228Define Key Terms 228Chapter 9 Network Virtualization 230“Do I Know This Already?” Quiz 230Foundation Topics 232MPLS 232Software-Defined Networks 266Summary 275References 275Exam Preparation Tasks 276Review All Key Topics 276Complete Tables and Lists from Memory 276Define Key Terms 276Chapter 10 Security 278“Do I Know This Already?” Quiz 278Foundation Topics 280Infrastructure Security 281Perimeter Security and Intrusion Prevention 292Network Control and Identity Management 294Summary 298Reference 299Exam Preparation Tasks 299Review All Key Topics 299Complete Tables and Lists from Memory 299Define Key Terms 299Chapter 11 Wireless 300“Do I Know This Already?” Quiz 300Foundation Topics 303IEEE 802.11 Standards and Protocols 303Enterprise Wireless Network Design 309Summary 313Reference 313Exam Preparation Tasks 313Review All Key Topics 314Complete Tables and Lists from Memory 314Define Key Terms 314Chapter 12 Automation 316“Do I Know This Already?” Quiz 317Foundation Topics 318Zero-Touch Provisioning 318Infrastructure as Code 319CI/CD Pipelines 321Summary 324Reference 324Exam Preparation Tasks 324Review All Key Topics 324Complete Tables and Lists from Memory 325Define Key Terms 325Chapter 13 Multicast Design 326“Do I Know This Already?” Quiz 327Foundation Topics 329Multicast Switching 329Multicast Routing 332Multicast Design Considerations 344Summary 350References 351Exam Preparation Tasks 351Review All Key Topics 351Complete Tables and Lists from Memory 351Define Key Terms 351Chapter 14 Network Services and Management 352“Do I Know This Already?” Quiz 353Foundation Topics 355IPv6 Design Considerations 355Quality of Service Design Considerations 369Network Management 390Summary 400References 400Exam Preparation Tasks 400Review All Key Topics 400Complete Tables and Lists from Memory 401Define Key Terms 401Part III Enterprise Network ArchitecturesChapter 15 Scalable Enterprise Campus Architecture Design 402“Do I Know This Already?” Quiz 402Foundation Topics 404Campus Hierarchical Design Models 404Campus Layer 3 Routing Design Considerations 411Campus Network Virtualization Design Considerations 413Summary 425References 425Exam Preparation Tasks 425Review All Key Topics 425Complete Tables and Lists from Memory 426Define Key Terms 426Chapter 16 Enterprise Internet Edge Architecture Design 428“Do I Know This Already?” Quiz 428Foundation Topics 429Enterprise Internet Edge Design Considerations 429Summary 443References 443Exam Preparation Tasks 444Review All Key Topics 444Complete Tables and Lists from Memory 444Define Key Terms 444Chapter 17 Enterprise WAN Architecture Design 446“Do I Know This Already?” Quiz 446Foundation Topics 448Enterprise WAN Module 448WAN Virtualization and Overlays Design Considerations and Techniques 471Enterprise WAN Migration to MPLS VPN Considerations 484Migrating from Legacy WAN to MPLS L3VPN WAN Scenario 484WAN Transport Virtualization Techniques Comparison 485Summary 488References 488Exam Preparation Tasks 488Review All Key Topics 488Complete Tables and Lists from Memory 489Define Key Terms 489Chapter 18 Final Preparation 490Getting Ready 490Tools for Final Preparation 491Summary 494Appendix A Answers to the “Do I Know This Already” Questions 496Appendix B Cisco Certified Design Expert CCDE 400-007 Exam Updates 514Glossary 517  Online Elements:Appendix C Memory TablesAppendix D Memory Tables AnswersAppendix E Study Planner  9780137601042, TOC, 3/23/2023

Zig Zsiga, CCDE 2016::32, CCIE #44883, has been in the networking industry for 20 years. He is currently a principal architect supporting the Cisco CX US public sector business and customers. Zig holds an active CCDE and two CCIE certifications, one in Routing and Switching and the second in Service Provider. He also holds a bachelor of science in computer science from Park University. He is a father, a husband, a United States Marine, a gamer, a nerd, a geek, and a big soccer fan. Zig loves all technology and can usually be found in the lab learning and teaching others. This is his second published book, and he is also the host of the Zigbits Network Design Podcast (ZNDP), where he interviews leading industry experts about network design. All of Zig's content is located at https://zigbits.tech. Zig lives in Upstate New York, USA, with his wife, Julie, and their son, Gunnar.

Select Guide Rating

• Introduction xliPart I What is Network Design?Chapter 1 Network Design 2“Do I Know This Already?” Quiz 2Foundation Topics 4Network Design Fundamentals 6Network Design Techniques 21Network Design Pitfalls 36Summary 39Exam Preparation Tasks 39Review All Key Topics 39Complete Tables and Lists from Memory 40Define Key Terms 40Reference 40Chapter 2 Designing for Business Success 42“Do I Know This Already?” Quiz 42Foundation Topics 44Business Success 44Project Management 55Summary 64References 65Exam Preparation Tasks 65Review All Key Topics 65Complete Tables and Lists from Memory 65Define Key Terms 65Chapter 3 What's the Purpose of the Network? 66“Do I Know This Already?” Quiz 67Foundation Topics 69Business Applications 69Service Models 72The Cloud 73Data Management 80Summary 81Reference 81Exam Preparation Tasks 82Review All Key Topics 82Complete Tables and Lists from Memory 82Define Key Terms 82Chapter 4 Security Is Pervasive 84“Do I Know This Already?” Quiz 85Foundation Topics 87Zero Trust Architecture 91Security CIA Triad 95Regulatory Compliance 96Summary 98Reference 99Exam Preparation Tasks 99Review All Key Topics 99Complete Tables and Lists from Memory 100Define Key Terms 100Chapter 5 Reference Architecture Models and Frameworks 102“Do I Know This Already?” Quiz 102Foundation Topics 104Reference Architecture Models and Frameworks 104Summary 115Reference 116Exam Preparation Tasks 116Review All Key Topics 116Complete Tables and Lists from Memory 117Define Key Terms 117Part II Core Technology DesignChapter 6 Transport Technologies 118“Do I Know This Already?” Quiz 118Foundation Topics 120Layer 2 Media Access 120Virtual Private Wire Service Design Considerations 124EVPN Design Model 134Summary 142Reference 142Exam Preparation Tasks 143Review All Key Topics 143Complete Tables and Lists from Memory 143Define Key Terms 143Chapter 7 Layer 2 Technologies 144“Do I Know This Already?” Quiz 144Foundation Topics 147Layer 2 Core Technologies 147Layer 2 LAN Common Design Models 152STP-Based Models 152Summary 156Reference 156Exam Preparation Tasks 157Review All Key Topics 157Complete Tables and Lists from Memory 157Define Key Terms 157Chapter 8 Layer 3 Technologies 158“Do I Know This Already?” Quiz 159Foundation Topics 161Enterprise Layer 3 Routing 161BGP Routing 206Enterprise Routing Design Recommendations 225Summary 227Reference 227Exam Preparation Tasks 227Review All Key Topics 227Complete Tables and Lists from Memory 228Define Key Terms 228Chapter 9 Network Virtualization 230“Do I Know This Already?” Quiz 230Foundation Topics 232MPLS 232Software-Defined Networks 266Summary 275References 275Exam Preparation Tasks 276Review All Key Topics 276Complete Tables and Lists from Memory 276Define Key Terms 276Chapter 10 Security 278“Do I Know This Already?” Quiz 278Foundation Topics 280Infrastructure Security 281Perimeter Security and Intrusion Prevention 292Network Control and Identity Management 294Summary 298Reference 299Exam Preparation Tasks 299Review All Key Topics 299Complete Tables and Lists from Memory 299Define Key Terms 299Chapter 11 Wireless 300“Do I Know This Already?” Quiz 300Foundation Topics 303IEEE 802.11 Standards and Protocols 303Enterprise Wireless Network Design 309Summary 313Reference 313Exam Preparation Tasks 313Review All Key Topics 314Complete Tables and Lists from Memory 314Define Key Terms 314Chapter 12 Automation 316“Do I Know This Already?” Quiz 317Foundation Topics 318Zero-Touch Provisioning 318Infrastructure as Code 319CI/CD Pipelines 321Summary 324Reference 324Exam Preparation Tasks 324Review All Key Topics 324Complete Tables and Lists from Memory 325Define Key Terms 325Chapter 13 Multicast Design 326“Do I Know This Already?” Quiz 327Foundation Topics 329Multicast Switching 329Multicast Routing 332Multicast Design Considerations 344Summary 350References 351Exam Preparation Tasks 351Review All Key Topics 351Complete Tables and Lists from Memory 351Define Key Terms 351Chapter 14 Network Services and Management 352“Do I Know This Already?” Quiz 353Foundation Topics 355IPv6 Design Considerations 355Quality of Service Design Considerations 369Network Management 390Summary 400References 400Exam Preparation Tasks 400Review All Key Topics 400Complete Tables and Lists from Memory 401Define Key Terms 401Part III Enterprise Network ArchitecturesChapter 15 Scalable Enterprise Campus Architecture Design 402“Do I Know This Already?” Quiz 402Foundation Topics 404Campus Hierarchical Design Models 404Campus Layer 3 Routing Design Considerations 411Campus Network Virtualization Design Considerations 413Summary 425References 425Exam Preparation Tasks 425Review All Key Topics 425Complete Tables and Lists from Memory 426Define Key Terms 426Chapter 16 Enterprise Internet Edge Architecture Design 428“Do I Know This Already?” Quiz 428Foundation Topics 429Enterprise Internet Edge Design Considerations 429Summary 443References 443Exam Preparation Tasks 444Review All Key Topics 444Complete Tables and Lists from Memory 444Define Key Terms 444Chapter 17 Enterprise WAN Architecture Design 446“Do I Know This Already?” Quiz 446Foundation Topics 448Enterprise WAN Module 448WAN Virtualization and Overlays Design Considerations and Techniques 471Enterprise WAN Migration to MPLS VPN Considerations 484Migrating from Legacy WAN to MPLS L3VPN WAN Scenario 484WAN Transport Virtualization Techniques Comparison 485Summary 488References 488Exam Preparation Tasks 488Review All Key Topics 488Complete Tables and Lists from Memory 489Define Key Terms 489Chapter 18 Final Preparation 490Getting Ready 490Tools for Final Preparation 491Summary 494Appendix A Answers to the “Do I Know This Already” Questions 496Appendix B Cisco Certified Design Expert CCDE 400-007 Exam Updates 514Glossary 517  Online Elements:Appendix C Memory TablesAppendix D Memory Tables AnswersAppendix E Study Planner  9780137601042, TOC, 3/23/2023