Introduction xxxi 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 18 IPv6 SLAAC, Stateful DHCPv6, and Stateless DHCPv6 22 Packet-Forwarding Process 30 Routing Information Sources 38 Static Routes 41 Trouble Tickets 47 Exam Preparation Tasks 65 Review All Key Topics 65 Define Key Terms 66 Command Reference to Check Your Memory 67 Chapter 2 EIGRP 70 "Do I Know This Already?" Quiz 70 Foundation Topics 73 EIGRP Fundamentals 73 EIGRP Configuration Modes 78 Path Metric Calculation 93 References in This Chapter 102 Exam Preparation Tasks 102 Review All Key Topics 102 Complete Tables and Lists from Memory 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 113 WAN Considerations 118 Route Manipulation 128 References in This Chapter 134 Exam Preparation Tasks 135 Review All Key Topics 135 Complete Tables and Lists from Memory 135 Define Key Terms 135 Use the Command Reference to Check Your Memory 135 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 190 Troubleshooting EIGRPv6 Neighbor Issues 197 Troubleshooting EIGRPv6 Routes 201 Troubleshooting Named EIGRP 204 EIGRPv6 and Named EIGRP Trouble Tickets 208 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 223 Foundation Topics 225 OSPF Fundamentals 225 OSPF Configuration 232 The Designated Router and Backup Designated Router 242 OSPF Network Types 245 Failure Detection 252 Authentication 253 References in This Chapter 255 Exam Preparation Tasks 255 Review All Key Topics 255 Define Key Terms 256 Use the Command Reference to Check Your Memory 256 Chapter 7 Advanced OSPF 258 "Do I Know This Already?" Quiz 258 Foundation Topics 261 Link-State Advertisements 261 OSPF Stubby Areas 281 OSPF Path Selection 292 Summarization of Routes 295 Discontiguous Network 302 Virtual Links 303 References in This Chapter 306 Exam Preparation Tasks 306 Review All Key Topics 307 Define Key Terms 308 Use the Command Reference to Check Your Memory 308 Chapter 8 Troubleshooting OSPFv2 310 "Do I Know This Already?" Quiz 310 Foundation Topics 312 Troubleshooting OSPFv2 Neighbor Adjacencies 312 Troubleshooting OSPFv2 Routes 327 Troubleshooting Miscellaneous OSPFv2 Issues 341 OSPFv2 Trouble Tickets 348 Exam Preparation Tasks 361 Review All Key Topics 361 Define Key Terms 362 Use the Command Reference to Check Your Memory 362 Chapter 9 OSPFv3 364 "Do I Know This Already?" Quiz 364 Foundation Topics 365 OSPFv3 Fundamentals 365 OSPFv3 Configuration 368 OSPFv3 LSA Flooding Scope 378 References in This Chapter 384 Exam Preparation Tasks 384 Review All Key Topics 384 Define Key Terms 385 Use the Command Reference to Check Your Memory 385 Chapter 10 Troubleshooting OSPFv3 386 "Do I Know This Already?" Quiz 386 Foundation Topics 388 Troubleshooting OSPFv3 for IPv6 388 OSPFv3 Trouble Tickets 395 Troubleshooting OSPFv3 Address Families 402 OSPFv3 AF Trouble Ticket 412 Exam Preparation Tasks 416 Review All Key Topics 416 Define Key Terms 417 Use the Command Reference to Check Your Memory 417 Chapter 11 BGP 420 "Do I Know This Already?" Quiz 420 Foundation Topics 422 BGP Fundamentals 422 Basic BGP Configuration 428 Understanding BGP Session Types and Behaviors 441 Multiprotocol BGP for IPv6 458 References in This Chapter 470 Exam Preparation Tasks 470 Review All Key Topics 470 Define Key Terms 471 Use the Command Reference to Check Your Memory 471 Chapter 12 Advanced BGP 474 "Do I Know This Already?" Quiz 474 Foundation Topics 476 Route Summarization 476 BGP Route Filtering and Manipulation 486 BGP Communities 499 Maximum Prefix 507 Configuration Scalability 509 References in This Chapter 511 Exam Preparation Tasks 511 Review All Key Topics 511 Define Key Terms 512 Use the Command Reference to Check Your Memory 512 Chapter 13 BGP Path Selection 514 "Do I Know This Already?" Quiz 515 Foundation Topics 516 Understanding BGP Path Selection 516 BGP Best Path 517 Weight 519 BGP Equal-Cost Multipath 542 Exam Preparation Tasks 543 Review All Key Topics 543 Define Key Terms 543 Use the Command Reference to Check Your Memory 544 Chapter 14 Troubleshooting BGP 546 "Do I Know This Already?" Quiz 547 Foundation Topics 549 Troubleshooting BGP Neighbor Adjacencies 549 Troubleshooting BGP Routes 562 Troubleshooting BGP Path Selection 577 Troubleshooting BGP for IPv6 583 BGP Trouble Tickets 587 MP-BGP Trouble Ticket 604 Exam Preparation Tasks 607 Review All Key Topics 607 Define Key Terms 608 Use the Command Reference to Check Your Memory 608 Chapter 15 Route Maps and Conditional Forwarding 610 "Do I Know This Already?" Quiz 610 Foundation Topics 612 Conditional Matching 612 Route Maps 618 Conditional Forwarding of Packets 623 Trouble Tickets 628 Exam Preparation Tasks 636 Review All Key Topics 637 Define Key Terms 637 Use the Command Reference to Check Your Memory 637 Chapter 16 Route Redistribution 640 "Do I Know This Already?" Quiz 640 Foundation Topics 641 Redistribution Overview 641 Reference in This Chapter 664 Exam Preparation Tasks 665 Review All Key Topics 665 Define Key Terms 665 Use the Command Reference to Check Your Memory 665 Chapter 17 Troubleshooting Redistribution 668 "Do I Know This Already?" Quiz 668 Foundation Topics 671 Troubleshooting Advanced Redistribution Issues 671 Troubleshooting IPv4 and IPv6 Redistribution 680 Redistribution Trouble Tickets 696 Exam Preparation Tasks 715 Review All Key Topics 715 Define Key Terms 716 Use the Command Reference to Check Your Memory 716 Chapter 18 VRF, MPLS, and MPLS Layer 3 VPNs 718 "Do I Know This Already?" Quiz 718 Foundation Topics 720 Implementing and Verifying VRF-Lite 720 An Introduction to MPLS Operations 734 An Introduction to MPLS Layer 3 VPNs 739 Reference in This Chapter 745 Exam Preparation Tasks 745 Review All Key Topics 745 Define Key Terms 746 Use the Command Reference to Check Your Memory 746 Chapter 19 DMVPN Tunnels 748 "Do I Know This Already?" Quiz 748 Foundation Topics 750 Generic Routing Encapsulation (GRE) Tunnels 750 Next Hop Resolution Protocol (NHRP) 756 Dynamic Multipoint VPN (DMVPN) 758 DMVPN Phase Comparison 760 DMVPN Configuration 761 Spoke-to-Spoke Communication 777 Problems with Overlay Networks 788 DMVPN Failure Detection and High Availability 792 IPv6 DMVPN Configuration 793 References in This Chapter 798 Exam Preparation Tasks 799 Review All Key Topics 799 Define Key Terms 799 Use the Command Reference to Check Your Memory 800 Chapter 20 Securing DMVPN Tunnels 802 "Do I Know This Already?" Quiz 802 Foundation Topics 803 Elements of Secure Transport 803 IPsec Fundamentals 805 IPsec Tunnel Protection 808 References in This Chapter 820 Exam Preparation Tasks 821 Review All Key Topics 821 Define Key Terms 821 Use the Command Reference to Check Your Memory 821 Chapter 21 Troubleshooting ACLs and Prefix Lists 824 "Do I Know This Already?" Quiz 824 Foundation Topics 827 Troubleshooting IPv4 ACLs 827 Troubleshooting IPv6 ACLs 830 Troubleshooting Prefix Lists 833 Trouble Tickets 836 Exam Preparation Tasks 844 Review All Key Topics 844 Define Key Terms 845 Use the Command Reference to Check Your Memory 845 Chapter 22 Infrastructure Security 846 "Do I Know This Already?" Quiz 846 Foundation Topics 849 Cisco IOS AAA Troubleshooting 849 Troubleshooting Unicast Reverse Path Forwarding (uRPF) 852 Troubleshooting Control Plane Policing (CoPP) 854 IPv6 First-Hop Security 863 Exam Preparation Tasks 864 Review All Key Topics 865 Define Key Terms 865 Use the Command Reference to Check Your Memory 865 Chapter 23 Device Management and Management Tools Troubleshooting 868 "Do I Know This Already?" Quiz 868 Foundation Topics 871 Device Management Troubleshooting.