Raymond Lacoste has dedicated his career to developing the skills of those interested in IT. In 2001, he began to mentor hundreds of IT professionals pursuing their Cisco certification dreams. This role led to teaching Cisco courses full time. Raymond is currently a master instructor for Cisco Enterprise Routing and Switching, AWS, ITIL, and CyberSecurity at StormWind Studios. Raymond treats all technologies as an escape room, working to uncover every mystery in the protocols he works with. Along this journey, Raymond has passed more than 120 exams, and his office wall includes certificates from Microsoft, Cisco, ISC2, ITIL, AWS, and CompTIA. If you were visualizing Raymond's office, you'd probably expect the usual network equipment, certifications, and awards. Those certainly take up space, but they aren't his pride and joy. Most impressive, at least to Raymond, is his gemstone and mineral collection; once he starts talking about it, he just can't stop. Who doesn't get excited by a wondrous barite specimen in a pyrite matrix? Raymond presently resides with his wife and two children in eastern Canada, where they experience many adventures together.

Brad Edgeworth, CCIE No. 31574 (R&S and SP), is an SD-WAN technical solutions architect at Cisco Systems. Brad is a distinguished speaker at Cisco Live, where he has presented on various topics. Before joining Cisco, Brad worked as a network architect and consultant for various Fortune 500 companies. Brad's expertise is based on enterprise and service provider environments, with an emphasis on architectural and operational simplicity. Brad holds a bachelor of arts degree in computer systems management from St. Edward's University in Austin, Texas. Brad can be found on Twitter as [...]

Introduction xxxv

Chapter 1 IPv4/IPv6 Addressing and Routing Review 2

Do I Know This Already? Quiz 3

Foundation Topics 7

IPv4 Addressing 7

DHCP for IPv4 11

IPv6 Addressing 19

IPv6 SLAAC, Stateful DHCPv6, and Stateless DHCPv6 22

Packet-Forwarding Process 31

Administrative Distance 38

Static Routes 41

Trouble Tickets 48

Exam Preparation Tasks 66

Review All Key Topics 66

Define Key Terms 68

Use the Command Reference to Check Your Memory 68

Chapter 2 EIGRP 72

Do I Know This Already? Quiz 72

Foundation Topics 74

EIGRP Fundamentals 74

EIGRP Configuration Modes 80

Path Metric Calculation 94

References in This Chapter 102

Exam Preparation Tasks 102

Review All Key Topics 103

Define Key Terms 103

Use the Command Reference to Check Your Memory 103

Chapter 3 Advanced EIGRP 106

Do I Know This Already? Quiz 106

Foundation Topics 108

Failure Detection and Timers 108

Route Summarization 114

WAN Considerations 119

Route Manipulation 129

References in This Chapter 135

Exam Preparation Tasks 135

Review All Key Topics 135

Define Key Terms 136

Use the Command Reference to Check Your Memory 136

Chapter 4 Troubleshooting EIGRP for IPv4 138

Do I Know This Already? Quiz 138

Foundation Topics 141

Troubleshooting EIGRP for IPv4 Neighbor Adjacencies 141

Troubleshooting EIGRP for IPv4 Routes 151

Troubleshooting Miscellaneous EIGRP for IPv4 Issues 162

EIGRP for IPv4 Trouble Tickets 169

Exam Preparation Tasks 184

Review All Key Topics 184

Define Key Terms 185

Use the Command Reference to Check Your Memory 185

Chapter 5 EIGRPv6 188

Do I Know This Already? Quiz 188

Foundation Topics 191

EIGRPv6 Fundamentals 191

Troubleshooting EIGRPv6 Neighbor Issues 197

Troubleshooting EIGRPv6 Routes 201

Troubleshooting Named EIGRP 204

EIGRPv6 and Named EIGRP Trouble Tickets 209

Exam Preparation Tasks 218

Review All Key Topics 218

Define Key Terms 219

Use the Command Reference to Check Your Memory 219

Chapter 6 OSPF 222

Do I Know This Already? Quiz 222

Foundation Topics 225

OSPF Fundamentals 225

OSPF Configuration 232

The Designated Router and Backup Designated Router 242

OSPF Network Types 246

Failure Detection 254

Authentication 255

References in This Chapter 257

Exam Preparation Tasks 258

Review All Key Topics 258

Define Key Terms 258

Use the Command Reference to Check Your Memory 258

Chapter 7 Advanced OSPF 260

Do I Know This Already? Quiz 260

Foundation Topics 262

Link-State Advertisements 262

OSPF Stubby Areas 284

OSPF Path Selection 294

Summarization of Routes 298

Discontiguous Network 305

Virtual Links 307

References in This Chapter 310

Exam Preparation Tasks 310

Review All Key Topics 310

Define Key Terms 311

Use the Command Reference to Check Your Memory 311

Chapter 8 Troubleshooting OSPFv2 314

Do I Know This Already? Quiz 314

Foundation Topics 317

Troubleshooting OSPFv2 Neighbor Adjacencies 317

Troubleshooting OSPFv2 Routes 332

Troubleshooting Miscellaneous OSPFv2 Issues 346

OSPFv2 Trouble Tickets 353

Exam Preparation Tasks 366

Review All Key Topics 366

Define Key Terms 367

Use the Command Reference to Check Your Memory 367

Chapter 9 OSPFv3 370

Do I Know This Already? Quiz 370

Foundation Topics 371

OSPFv3 Fundamentals 371

OSPFv3 Configuration 374

OSPFv3 LSA Flooding Scope 384

References in This Chapter 390

Exam Preparation Tasks 390

Review All Key Topics 390

Define Key Terms 391

Use the Command Reference to Check Your Memory 391

Chapter 10 Troubleshooting OSPFv3 392

Do I Know This Already? Quiz 392

Foundation Topics 394

Troubleshooting OSPFv3 for IPv6 394

OSPFv3 Trouble Tickets 401

Troubleshooting OSPFv3 Address Families 408

OSPFv3 AF Trouble Ticket 418

Exam Preparation Tasks 423

Review All Key Topics 423

Define Key Terms 424

Use the Command Reference to Check Your Memory 424

Chapter 11 BGP 426

Do I Know This Already? Quiz 426

Foundation Topics 428

BGP Fundamentals 428

Basic BGP Configuration 435

Understanding BGP Session Types and Behaviors 448

Multiprotocol BGP for IPv6 465

References in This Chapter 475

Exam Preparation Tasks 476

Review All Key Topics 476

Define Key Terms 477

Use the Command Reference to Check Your Memory 477

Chapter 12 Advanced BGP 480

Do I Know This Already? Quiz 480

Foundation Topics 482

Route Summarization 482

BGP Route Filtering and Manipulation 493

BGP Communities 507

Maximum Prefix 516

Configuration Scalability 517

References in This Chapter 519

Exam Preparation Tasks 520

Review All Key Topics 520

Define Key Terms 520

Use the Command Reference to Check Your Memory 521

Chapter 13 BGP Path Selection 524

Do I Know This Already? Quiz 524

Foundation Topics 526

Understanding BGP Path Selection 526

BGP Best Path 527

BGP Multipath 553

Exam Preparation Tasks 554

Review All Key Topics 554

Define Key Terms 554

Use the Command Reference to Check Your Memory 554

Chapter 14 Troubleshooting BGP 556

Do I Know This Already? Quiz 557

Foundation Topics 559

Troubleshooting BGP Neighbor Adjacencies 559

Troubleshooting BGP Routes 573

Troubleshooting BGP Path Selection 588

Troubleshooting BGP for IPv6 593

BGP Trouble Tickets 598

MP-BGP Trouble Ticket 614

Exam Preparation Tasks 617

Review All Key Topics 617

Define Key Terms 618

Use the Command Reference to Check Your Memory 618

Chapter 15 Route Maps and Conditional Forwarding 620

Do I Know This Already? Quiz 620

Foundation Topics 622

Conditional Matching 622

Route Maps 627

Conditional Forwarding of Packets 632

Trouble Tickets 637

Exam Preparation Tasks 645

Review All Key Topics 646

Define Key Terms 646

Use the Command Reference to Check Your Memory 646

Chapter 16 Route Redistribution 648

Do I Know This Already? Quiz 648

Foundation Topics 650

Redistribution Overview 650

Protocol-Specific Configuration 656

Reference in This Chapter 672

Exam Preparation Tasks 672

Review All Key Topics 672

Define Key Terms 673

Use the Command Reference to Check Your Memory 673

Chapter 17 Troubleshooting Redistribution 674

Do I Know This Already? Quiz 674

Foundation Topics 677

Troubleshooting Advanced Redistribution Issues 677

Troubleshooting IPv4 and IPv6 Redistribution 687

Redistribution Trouble Tickets 702

Exam Preparation Tasks 721

Review All Key Topics 722

Define Key Terms 722

Command Reference to Check Your Memory 723

Chapter 18 VRF, MPLS, and MPLS Layer 3 VPNs 724

Do I Know This Already? Quiz 724

Foundation Topics 727

Implementing and Verifying VRF-Lite 727

An Introduction to MPLS Operations 747

Forwarding Equivalence Class (FEC) 749

An Introduction to MPLS Layer 3 VPNs 755

Reference in This Chapter 762

Exam Preparation Tasks 762

Review All Key Topics 762

Define Key Terms 763

Use the Command Reference to Check Your Memory 763

Chapter 19 DMVPN Tunnels 766

Do I Know This Already? Quiz 766

Foundation Topics 769

Generic Routing Encapsulation (GRE) Tunnels 769

GRE Tunnel Configuration 769

GRE Sample Configuration 771

Next Hop Resolution Protocol (NHRP) 774

Dynamic Multipoint VPN (DMVPN) 776

DMVPN Configuration 779

Spoke-to-Spoke Communication 795

Problems with Overlay Networks 806

DMVPN Failure Detection and High Availability 810

IPv6 DMVPN Configuration 811

References in This Chapter 817

Exam Preparation Tasks 817

Review All Key Topics 817

Define Key Terms 818

Use the Command Reference to Check Your Memory 818

Chapter 20 Securing DMVPN Tunnels 820

Do I Know This Already? Quiz 820

Foundation Topics 821

Elements of Secure Transport 821

IPsec Fundamentals 823

IPsec Tunnel Protection 827

References in This Chapter 839

Exam Preparation Tasks 840

Review All Key Topics 840

Define Key Terms 840

Use the Command Reference to Check Your Memory 840

Chapter 21 Troubleshooting ACLs and Prefix Lists 842

Do I Know This Already? Quiz 842

Foundation Topics 845

Troubleshooting IPv4 ACLs 845

Troubleshooting IPv6 ACLs 850

Troubleshooting Prefix Lists 852

Trouble Tickets 855

Exam Preparation Tasks 863

Review All Key Topics 863

Define Key Terms 864

Use the Command Reference to Check Your Memory 864

Chapter 22 Infrastructure...