Introduction xxv Assessment Test xl Chapter 1 Network Fundamentals 1 Network Components 2 Next-Generation Firewalls and IPS 6 Network Topology Architectures 10 Physical Interfaces and Cables 17 Ethernet Cabling 19 Summary 24 Exam Essentials 24 Review Questions 26 Chapter 2 TCP/IP 29 Introducing TCP/IP 30 TCP/IP and the DoD Model 31 IP Addressing 60 IPv4 Address Types 67 Summary 71 Exam Essentials 71 Review Questions 73 Chapter 3 Easy Subnetting 75 Subnetting Basics 76 Summary 102 Exam Essentials 102 Review Questions 103 Chapter 4 Troubleshooting IP Addressing 105 Cisco''s Way of Troubleshooting IP 106 Summary 114 Exam Essentials 114 Review Questions 115 Chapter 5 IP Routing 117 Routing Basics 119 The IP Routing Process 121 Configuring IP Routing 132 Configuring IP Routing in Our Network 141 Dynamic Routing 150 Routing Information Protocol (RIP) 152 Summary 159 Exam Essentials 159 Review Questions 161 Chapter 6 Open Shortest Path First (OSPF) 163 Open Shortest Path First (OSPF) Basics 164 Configuring OSPF 171 OSPF and Loopback Interfaces 179 Verifying OSPF Configuration 182 Summary 188 Exam Essentials 188 Review Questions 189 Chapter 7 Layer 2 Switching 193 Switching Services 194 Configuring Catalyst Switches 204 Summary 215 Exam Essentials 215 Review Questions 216 Chapter 8 VLANs and Inter-VLAN Routing 219 VLAN Basics 220 Identifying VLANs 224 Routing Between VLANs 229 Configuring VLANs 231 Summary 247 Exam Essentials 247 Review Questions 248 Chapter 9 Enhanced Switched Technologies 251 Spanning Tree Protocol (STP) 252 Types of Spanning-Tree Protocols 259 Modifying and Verifying the Bridge ID 267 Spanning-Tree Failure Consequences 273 PortFast and BPDU Guard 275 EtherChannel 278 Summary 284 Exam Essentials 284 Review Questions 285 Chapter 10 Access Lists 289 Perimeter, Firewall, and Internal Routers 290 Introduction to Access Lists 291 Standard Access Lists 295 Extended Access Lists 303 Monitoring Access Lists 313 Summary 316 Exam Essentials 316 Review Questions 317 Chapter 11 Network Address Translation (NAT) 319 When Do We Use NAT? 320 Types of Network Address Translation 322 NAT Names 322 How NAT Works 323 Testing and Troubleshooting NAT 328 Summary 333 Exam Essentials 333 Review Questions 334 Chapter 12 IP Services 337 Exploring Connected Devices Using CDP and LLDP 338 Network Time Protocol (NTP) 347 SNMP 348 Syslog 352 Secure Shell (SSH) 357 Summary 358 Exam Essentials 358 Review Questions 360 Chapter 13 Security 363 Network Security Threats 365 Three Primary Network Attacks 365 Network Attacks 366 Security Program Elements 374 Layer 2 Security Features 378 Authentication Methods 381 Managing User Accounts 386 Security Password Policy Elements 389 User-Authentication Methods 398 Setting Passwords 400 Summary 407 Exam Essentials 407 Review Questions 408 Chapter 14 First Hop Redundancy Protocol (HSRP) 411 Client Redundancy Issues 412 Introducing First Hop Redundancy Protocol (FHRP) 414 Hot Standby Router Protocol (HSRP) 416 Summary 429 Exam Essentials 429 Review Questions 430 Chapter 15 Virtual Private Networks (VPNs) 433 Virtual Private Networks 434 GRE Tunnels 441 Summary 447 Exam Essentials 447 Review Questions 448 Chapter 16 Quality of Service (QoS) 451 Quality of Service 452 Trust Boundary 454 QoS Mechanisms 455 Summary 461 Exam Essentials 461 Review Questions 462 Chapter 17 Internet Protocol Version 6 (IPv6) 465 Why Do We Need IPv6? 467 The Benefits and Uses of IPv6 467 IPv6 Addressing and Expressions 469 How IPv6 Works in an Internetwork 473 IPv6 Routing Protocols 483 Configuring IPv6 on Our Internetwork 484 Configuring Routing on Our Internetwork 487 Summary 490 Exam Essentials 490 Review Questions 492 Chapter 18 Troubleshooting IP, IPv6, and VLANs 495 Endpoints 496 Servers 497 IP Config 498 Troubleshooting IP Network Connectivity 507 Troubleshooting IPv6 Network Connectivity 522 Troubleshooting VLAN Connectivity 531 Summary 544 Exam Essentials 545 Review Questions 546 Chapter 19 Wireless Technologies 549 Wireless Networks 551 Basic Wireless Devices 553 Wireless Principles 556 Nonoverlapping Wi-Fi channels 565 Radio Frequency (RF) 569 Wireless Security 581 Summary 588 Exam Essentials 588 Review Question 590 Chapter 20 Configuring Wireless Technologies 595 WLAN Deployment Models 596 Setting Up a Wireless LAN Controller (WLC) 602 Joining Access Points (APs) 607 Wireless LAN Controllers (WLC) 610 WLC Port Types 611 WLC Interface Types 614 AP Modes 629 AP and WLC Management Access Connections 633 Summary 655 Exam Essentials 655 Review Questions 657 Chapter 21 Virtualization, Automation, and Programmability 661 Virtual Machine Fundamentals 662 Virtualization Components 665 Virtualization Features 666 Virtualization Types 668 Virtualization Solutions 669 Automation Components 670 Summary 684 Exam Essentials 684 Review Questions 685 Chapter 22 SDN Controllers 689 Traditional Network Monitoring Systems (NMS) 690 Traditional Network Configuration Managers (NCM) 699 Traditional Networking 702 Introduction to SDN 706 Separating the Control Plane 709 Controller-Based Architectures 710 SDN Network Components 712 DNA Center Overview 718 Summary 736 Exam Essentials 737 Review Questions 738 Chapter 23 Configuration Management 743 Team Silos 744 DevOps 748 Infrastructure as Code (IaC) 748 Ansible 750 Ansible Tower/AWX 763 Puppet 764 Summary 781 Exam Essentials 782 Review Questions 783 Appendix Answer to Review Questions 787 Chapter 1: Network Fundamentals 788 Chapter 2: TCP/IP 788 Chapter 3: Easy Subnetting 789 Chapter 4: Troubleshooting IP Addressing 790 Chapter 5: IP Routing 791 Chapter 6: Open Shortest Path First (OSPF) 792 Chapter 7: Layer 2 Switching 792 Chapter 8: VLANs and Inter-VLAN Routing 794 Chapter 9: Enhanced Switched Technologies 795 Chapter 10: Access Lists 796 Chapter 11: Network Address Translation (NAT) 797 Chapter 12: IP Services 797 Chapter 13: Security 798 Chapter 14: First Hop Redundancy Protocol (HSRP) 799 Chapter 15: Virtual Private Networks (VPNs) 800 Chapter 16: Quality of Service (QoS) 801 Chapter 17: Internet Protocol Version 6 (IPv6) 802 Chapter 18: Troubleshooting IP, IPv6, and VLANs 803 Chapter 19: Wireless Technologies 803 Chapter 20: Configuring Wireless Technologies 805 Chapter 21: Virtualization, Automation, and Programmability 806 Chapter 22: SDN Controllers 806 Chapter 23: Configuration Management 808 Index 809.