Introduction

Your Study Plan

Part I Introduction to Networking

Chapter 1 Introduction to TCP/IP Networking

“Do I Know This Already?” Quiz

Foundation Topics

Perspectives on Networking

TCP/IP Networking Model

History Leading to TCP/IP

Overview of the TCP/IP Networking Model

TCP/IP Application Layer

TCP/IP Transport Layer

TCP/IP Network Layer

TCP/IP Data-Link and Physical Layers

Data Encapsulation Terminology

Names of TCP/IP Messages

OSI Networking Model and Terminology

Chapter Review

Chapter 2 Fundamentals of Ethernet LANs

“Do I Know This Already?” Quiz

Foundation Topics

An Overview of LANs

Typical SOHO LANs

Typical Enterprise LANs

The Variety of Ethernet Physical Layer Standards

Consistent Behavior over All Links Using the Ethernet Data-Link Layer

Building Physical Ethernet LANs with UTP

Transmitting Data Using Twisted Pairs

Breaking Down a UTP Ethernet Link

UTP Cabling Pinouts for 10BASE-T and 100BASE-T

UTP Cabling Pinouts for 1000BASE-T

Building Physical Ethernet LANs with Fiber

Fiber Cabling Transmission Concepts

Using Fiber with Ethernet

Sending Data in Ethernet Networks

Ethernet Data-Link Protocols

Sending Ethernet Frames with Switches and Hubs

Chapter Review

Chapter 3 Fundamentals of WANs and IP Routing

“Do I Know This Already?” Quiz

Foundation Topics

Wide-Area Networks

Leased-Line WANs

Ethernet as a WAN Technology

IP Routing

Network Layer Routing (Forwarding) Logic

How Network Layer Routing Uses LANs and WANs

How IP Addressing Helps IP Routing

How IP Routing Protocols Help IP Routing

Other Network Layer Features

Using Names and the Domain Name System

The Address Resolution Protocol

ICMP Echo and the ping Command

Chapter Review

Part I Review

Part II Implementing Ethernet LANs

Chapter 4 Using the Command-Line Interface

“Do I Know This Already?” Quiz

Foundation Topics

Accessing the Cisco Catalyst Switch CLI

Cisco Catalyst Switches

Accessing the Cisco IOS CLI

CLI Help Features

The debug and show Commands

Configuring Cisco IOS Software

Configuration Submodes and Contexts

Storing Switch Configuration Files

Copying and Erasing Configuration Files

Chapter Review

Chapter 5 Analyzing Ethernet LAN Switching

“Do I Know This Already?” Quiz

Foundation Topics

LAN Switching Concepts

Overview of Switching Logic

Forwarding Known Unicast Frames

Learning MAC Addresses

Flooding Unknown Unicast and Broadcast Frames

Avoiding Loops Using Spanning Tree Protocol

LAN Switching Summary

Verifying and Analyzing Ethernet Switching

Demonstrating MAC Learning

Switch Interfaces

Finding Entries in the MAC Address Table

Managing the MAC Address Table (Aging, Clearing)

MAC Address Tables with Multiple Switches

Chapter Review

Chapter 6 Configuring Basic Switch Management

“Do I Know This Already?” Quiz

Foundation Topics

Securing the Switch CLI

Securing User Mode and Privileged Mode with Simple Passwords

Securing User Mode Access with Local Usernames and Passwords

Securing User Mode Access with External Authentication Servers

Securing Remote Access with Secure Shell

Enabling IPv4 for Remote Access

Host and Switch IP Settings

Configuring IPv4 on a Switch

Configuring a Switch to Learn Its IP Address with DHCP

Verifying IPv4 on a Switch

Miscellaneous Settings Useful in the Lab

History Buffer Commands

The logging synchronous, exec-timeout, and no ip domain-lookup Commands

Chapter Review

Chapter 7 Configuring and Verifying Switch Interfaces

“Do I Know This Already?” Quiz

Foundation Topics

Configuring Switch Interfaces

Configuring Speed, Duplex, and Description

Configuring Multiple Interfaces with the interface range Command

Administratively Controlling Interface State with shutdown

Removing Configuration with the no Command

Autonegotiation

Analyzing Switch Interface Status and Statistics

Interface Status Codes and Reasons for Nonworking States

Interface Speed and Duplex Issues

Common Layer 1 Problems on Working Interfaces

Chapter Review

Part II Review

Part III Implementing VLANs and STP

Chapter 8 Implementing Ethernet Virtual LANs

“Do I Know This Already?” Quiz

Foundation Topics

Virtual LAN Concepts

Creating Multiswitch VLANs Using Trunking

Forwarding Data Between VLANs

VLAN and VLAN Trunking Configuration and Verification

Creating VLANs and Assigning Access VLANs to an Interface

VLAN Trunking Protocol

VLAN Trunking Configuration

Implementing Interfaces Connected to Phones

Troubleshooting VLANs and VLAN Trunks

Access VLANs Undefined or Disabled

Mismatched Trunking Operational States

The Supported VLAN List on Trunks

Mismatched Native VLAN on a Trunk

Chapter Review

Chapter 9 Spanning Tree Protocol Concepts

“Do I Know This Already?” Quiz

Foundation Topics

STP and RSTP Basics

The Need for Spanning Tree

What Spanning Tree Does

How Spanning Tree Works

Configuring to Influence the STP Topology

Details Specific to STP (and Not RSTP)

STP Activity When the Network Remains Stable

STP Timers That Manage STP Convergence

Changing Interface States with STP

Rapid STP Concepts

Comparing STP and RSTP

RSTP and the Alternate (Root) Port Role

RSTP States and Processes

RSTP and the Backup (Designated) Port Role

RSTP Port Types

Optional STP Features

Chapter Review

Chapter 10 RSTP and EtherChannel Configuration

“Do I Know This Already?” Quiz

Foundation Topics

Understanding RSTP Through Configuration

The Need for Multiple Spanning Trees

STP Modes and Standards

The Bridge ID and System ID Extension

How Switches Use the Priority and System ID Extension

RSTP Methods to Support Multiple Spanning Trees

Other RSTP Configuration Options

Configuring Layer 2 EtherChannel

Configuring a Manual Layer 2 EtherChannel

Configuring Dynamic EtherChannels

Physical Interface Configuration and EtherChannels

EtherChannel Load Distribution

Chapter Review

Part III Review

Part IV IPv4 Addressing

Chapter 11 Perspectives on IPv4 Subnetting

“Do I Know This Already?” Quiz

Foundation Topics

Introduction to Subnetting

Subnetting Defined Through a Simple Example

Operational View Versus Design View of Subnetting

Analyze Subnetting and Addressing Needs

Rules About Which Hosts Are in Which Subnet

Determining the Number of Subnets

Determining the Number of Hosts per Subnet

One Size Subnet Fits All—Or Not

Make Design Choices

Choose a Classful Network

Choose the Mask

Build a List of All Subnets

Plan the Implementation

Assigning Subnets to Different Locations

Choose Static and Dynamic Ranges per Subnet

Chapter Review

Chapter 12 Analyzing Classful IPv4 Networks

“Do I Know This Already?” Quiz

Foundation Topics

Classful Network Concepts

IPv4 Network Classes and Related Facts

Number of Hosts per Network

Deriving the Network ID and Related Numbers

Unusual Network IDs and Network Broadcast Addresses

Practice with Classful Networks

Practice Deriving Key Facts Based on an IP Address

Practice Remembering the Details of Address Classes

Chapter Review

Chapter 13 Analyzing Subnet Masks

“Do I Know This Already?” Quiz

Foundation Topics

Subnet Mask Conversion

Three Mask Formats

Converting Between Binary and Prefix Masks

Converting Between Binary and DDN Masks

Converting Between Prefix and DDN Masks

Practice Converting Subnet Masks

Identifying Subnet Design Choices Using Masks

Masks Divide the Subnet’s Addresses into Two Parts

Masks and Class Divide Addresses into Three Parts

Classless and Classful Addressing

Calculations Based on the IPv4 Address Format

Practice Analyzing Subnet Masks

Chapter Review

Chapter 14 Analyzing Existing Subnets

“Do I Know This Already?” Quiz

Foundation Topics

Defining a Subnet

An Example with Network 172.16.0.0 and Four Subnets

Subnet ID Concepts

Subnet Broadcast Address

Range of Usable Addresses

Analyzing Existing Subnets: Binary

Finding the Subnet ID: Binary

Finding the Subnet Broadcast Address: Binary

Binary Practice Problems

Shortcut for the Binary Process

Brief Note About Boolean Math

Finding the Range of Addresses

Analyzing Existing Subnets: Decimal

Analysis with Easy Masks

Predictability in the Interesting Octet

Finding the Subnet ID: Difficult Masks

Finding the Subnet Broadcast Address: Difficult Masks

Practice Analyzing Existing Subnets

A Choice: Memorize or Calculate

Chapter Review

Part IV Review

Part V IPv4 Routing

Chapter 15 Operating Cisco Routers

“Do I Know This Already?” Quiz

Foundation Topics

Installing Cisco Routers

Installing Enterprise Routers

Installing SOHO Routers

Enabling IPv4 Support on Cisco Router Interfaces

Accessing the Router CLI

Router Interfaces

Router Auxiliary Port

Chapter Review

Chapter 16 Configuring IPv4 Addresses and Static Routes

“Do I Know This Already?” Quiz

Foundation Topics

IP Routing

IPv4 Routing Process Reference

An Example of IP Routing

Configuring IP Addresses and Connected Routes

Connected Routes and the ip address Command

The ARP Table on a Cisco Router

Configuring Static Routes

Static Network Routes

Static Host Routes

Floating Static Routes

Static Default Routes

Troubleshooting Static Routes

IP Forwarding with the Longest Prefix Match

Using show ip route to Find the Best Route

Using show ip route address to Find the Best Route

Interpreting the IP Routing Table

Chapter Review

Chapter 17 IP Routing in the LAN

“Do I Know This Already?” Quiz

Foundation Topics

VLAN Routing with Router 802.1Q Trunks

Configuring ROAS

Verifying ROAS

Troubleshooting ROAS

VLAN Routing with Layer 3 Switch SVIs

Configuring Routing Using Switch SVIs

Verifying Routing with SVIs

Troubleshooting Routing with SVIs

VLAN Routing with Layer 3 Switch Routed Ports

Implementing Routed Interfaces on Switches

Implementing Layer 3 EtherChannels

Troubleshooting Layer 3 EtherChannels

Chapter Review

Chapter 18 Troubleshooting IPv4 Routing

“Do I Know This Already?” Quiz

Foundation Topics

Problem Isolation Using the ping Command

Ping Command Basics

Strategies and Results When Testing with the ping Command

Using Ping with Names and with IP Addresses

Problem Isolation Using the traceroute Command

traceroute Basics

Telnet and SSH

Common Reasons to Use the IOS Telnet and SSH Client

IOS Telnet and SSH Examples

Chapter Review

Part V Review

Part VI OSPF

Chapter 19 Understanding OSPF Concepts

“Do I Know This Already?” Quiz

Foundation Topics

Comparing Dynamic Routing Protocol Features

Routing Protocol Functions

Interior and Exterior Routing Protocols

Comparing IGPs

Administrative Distance

OSPF Concepts and Operation

OSPF Overview

Becoming OSPF Neighbors

Exchanging the LSDB Between Neighbors

Calculating the Best Routes with SPF

OSPF Areas and LSAs

OSPF Areas

How Areas Reduce SPF Calculation Time

(OSPFv2) Link-State Advertisements

Chapter Review

Chapter 20 Implementing OSPF

“Do I Know This Already?” Quiz

Foundation Topics

Implementing Single-Area OSPFv2

OSPF Single-Area Configuration

Wildcard Matching with the network Command

Verifying OSPF Operation

Verifying OSPF Configuration

Configuring the OSPF Router ID

Implementing Multiarea OSPF

Using OSPFv2 Interface Subcommands

OSPF Interface Configuration Example

Additional OSPFv2 Features

OSPF Passive Interfaces

OSPF Default Routes

OSPF Metrics (Cost)

OSPF Load Balancing

Chapter Review

Chapter 21 OSPF Network Types and Neighbors

“Do I Know This Already?” Quiz

Foundation Topics

OSPF Network Types

The OSPF Broadcast Network Type

The OSPF Point-to-Point Network Type

OSPF Neighbor Relationships

OSPF Neighbor Requirements

Issues That Prevent Neighbor Adjacencies

Issues That Allow Adjacencies but Prevent IP Routes

Chapter Review

Part VI Review

Part VII IP Version 6

Chapter 22 Fundamentals of IP Version 6

“Do I Know This Already?” Quiz

Foundation Topics

Introduction to IPv6

The Historical Reasons for IPv6

The IPv6 Protocols

IPv6 Routing

IPv6 Routing Protocols

IPv6 Addressing Formats and Conventions

Representing Full (Unabbreviated) IPv6 Addresses

Abbreviating and Expanding IPv6 Addresses

Representing the Prefix Length of an Address

Calculating the IPv6 Prefix (Subnet ID)

Finding the IPv6 Prefix

Working with More-Difficult IPv6 Prefix Lengths

Chapter Review

Chapter 23 IPv6 Addressing and Subnetting

“Do I Know This Already?” Quiz

Foundation Topics

Global Unicast Addressing Concepts

Public and Private IPv6 Addresses

The IPv6 Global Routing Prefix

Address Ranges for Global Unicast Addresses

IPv6 Subnetting Using Global Unicast Addresses

Assigning Addresses to Hosts in a Subnet

Unique Local Unicast Addresses

Subnetting with Unique Local IPv6 Addresses

The Need for Globally Unique Local Addresses

Chapter Review

Chapter 24 Implementing IPv6 Addressing on Routers

“Do I Know This Already?” Quiz

Foundation Topics

Implementing Unicast IPv6 Addresses on Routers

Static Unicast Address Configuration

Dynamic Unicast Address Configuration

Special Addresses Used by Routers

Link-Local Addresses

IPv6 Multicast Addresses

Miscellaneous IPv6 Addresses

Anycast Addresses

IPv6 Addressing Configuration Summary

Chapter Review

Chapter 25 Implementing IPv6 Routing

“Do I Know This Already?” Quiz

Foundation Topics

Connected and Local IPv6 Routes

Rules for Connected and Local Routes

Example of Connected IPv6 Routes

Examples of Local IPv6 Routes

Static IPv6 Routes

Static Routes Using the Outgoing Interface

Static Routes Using Next-Hop IPv6 Address

Static Default Routes

Static IPv6 Host Routes

Floating Static IPv6 Routes

Troubleshooting Static IPv6 Routes

The Neighbor Discovery Protocol

Discovering Neighbor Link Addresses with NDP NS and NA

Discovering Routers with NDP RS and RA

Using SLAAC with NDP RS and RA

Discovering Duplicate Addresses Using NDP NS and NA

NDP Summary

Chapter Review

Part VII Review

Part VIII Wireless LANs

Chapter 26 Fundamentals of Wireless Networks

“Do I Know This Already?” Quiz

Foundation Topics

Comparing Wired and Wireless Networks

Wireless LAN Topologies

Basic Service Set

Distribution System

Extended Service Set

Independent Basic Service Set

Other Wireless Topologies

Repeater

Workgroup Bridge

Outdoor Bridge

Mesh Network

RF Overview

Wireless Bands and Channels

APs and Wireless Standards

Chapter Review

Chapter 27 Analyzing Cisco Wireless Architectures

“Do I Know This Already?” Quiz

Foundation Topics

Autonomous AP Architecture

Cloud-based AP Architecture

Split-MAC Architectures

Comparing Wireless LAN Controller Deployments

Cisco AP Modes

Chapter Review

Chapter 28 Securing Wireless Networks

“Do I Know This Already?” Quiz

Foundation Topics

Anatomy of a Secure Connection

Authentication

Message Privacy

Message Integrity

Wireless Client Authentication Methods

Open Authentication

WEP

802.1x/EAP

Wireless Privacy and Integrity Methods

TKIP

CCMP

GCMP

WPA, WPA2, and WPA3

Chapter Review

Chapter 29 Building a Wireless LAN

“Do I Know This Already?” Quiz

Foundation Topics

Connecting a Cisco AP

Accessing a Cisco WLC

Connecting a Cisco WLC

Using WLC Ports

Using WLC Interfaces

Configuring a WLAN

Step 1. Configure a RADIUS Server

Step 2. Create a Dynamic Interface

Step 3. Create a New WLAN

Configuring WLAN Security

Configuring WLAN QoS

Configuring Advanced WLAN Settings

Finalizing WLAN Configuration

Chapter Review

Part VIII Review

Part IX Appendixes

Appendix A Numeric Reference Tables

Appendix B CCNA 200-301, Volume 1 Exam Updates

Appendix C Answers to the “Do I Know This Already?” Quizzes

Glossary

Online Appendixes

Appendix D Practice for Chapter 12: Analyzing Classful IPv4 Networks

Appendix E Practice for Chapter 13: Analyzing Subnet Masks

Appendix F Practice for Chapter 14: Analyzing Existing Subnets

Appendix G Practice for Chapter 22: Fundamentals of IP Version 6

Appendix H Practice for Chapter 24: Implementing IPv6 Addressing on Routers

Appendix I Study Planner

Appendix J Topics from Previous Editions

Appendix K Analyzing Ethernet LAN Designs

Appendix L Subnet Design

Appendix M Practice for Appendix L: Subnet Design

Appendix N Variable-Length Subnet Masks

Appendix O Spanning Tree Protocol Implementation

Appendix P LAN Troubleshooting

Appendix Q Troubleshooting IPv4 Routing Protocols

Appendix R Exam Topics Cross Reference

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