Introduction XXVIII

Chapter 1

Basic Device Configuration 1
Introduction - 1.0 1
- Why Should I Take This Module? - 1.0.1 1
- What Will I Learn to Do in This Module? - 1.0.2 1
Configure a Switch with Initial Settings - 1.1 1
- Switch Boot Sequence - 1.1.1 1
- The boot system Command - 1.1.2 2
- Switch LED Indicators - 1.1.3 2
- Recovering from a System Crash - 1.1.4 4
- Switch Management Access - 1.1.5 5
- Switch SVI Configuration Example - 1.1.6 5
- Lab: Basic Switch Configuration - 1.1.7 6
Configure Switch Ports - 1.2 7
- Duplex Communication - 1.2.1 7
- Configure Switch Ports at the Physical Layer - 1.2.2 7
- Auto-MDIX - 1.2.3 8
- Switch Verification Commands - 1.2.4 9
- Verify Switch Port Configuration - 1.2.5 9
- Network Access Layer Issues - 1.2.6 10
- Interface Input and Output Errors - 1.2.7 12
- Troubleshooting Network Access Layer Issues - 1.2.8 13
- Syntax Checker - Configure Switch Ports - 1.2.9 13
Secure Remote Access - 1.3 13
- Telnet Operation - 1.3.1 13
- SSH Operation - 1.3.2 14
- Verify the Switch Supports SSH - 1.3.3 14
- Configure SSH - 1.3.4 14
- Verify SSH is Operational - 1.3.5 16
- Packet Tracer - Configure SSH - 1.3.6 16
Basic Router Configuration - 1.4 17
- Configure Basic Router Settings - 1.4.1 17
- Syntax Checker - Configure Basic Router Settings - 1.4.2 18
- Dual Stack Topology - 1.4.3 18
- Configure Router Interfaces - 1.4.4 18
- Syntax Checker - Configure Router Interfaces - 1.4.5 19
- IPv4 Loopback Interfaces - 1.4.6 19
- Packet Tracer - Configure Router Interfaces - 1.4.7 20
Verify Directly Connected Networks - 1.5 20
- Interface Verification Commands - 1.5.1 20
- Verify Interface Status - 1.5.2 20
- Verify IPv6 Link Local and Multicast Addresses - 1.5.3 21
- Verify Interface Configuration - 1.5.4 22
- Verify Routes - 1.5.5 22
- Filter Show Command Output - 1.5.6 24
- Syntax Checker - Filter Show Command Output - 1.5.7 26
- Command History Feature - 1.5.8 26
- Syntax Checker - Command History Features - 1.5.9 26
- Packet Tracer - Verify Directly Connected Networks - 1.5.10 26
- Check Your Understanding - Verify Directly Connected Networks - 1.5.11 27
Module Practice and Quiz - 1.6 27
- Packet Tracer - Implement a Small Network - 1.6.1 27
- Lab - Configure Basic Router Settings - 1.6.2 27
- What Did I Learn in This Module? - 1.6.3 27
Chapter Quiz - Basic Device Configuration 29
Your Chapter Notes 29

Chapter 2

Switching Concepts 31
Introduction - 2.0 31
- Why Should I Take This Module? - 2.0.1 31
- What Will I Learn to Do in This Module? - 2.0.2 31
Frame Forwarding - 2.1 31
- Switching in Networking - 2.1.1 31
- The Switch MAC Address Table - 2.1.2 32
- The Switch Learn and Forward Method - 2.1.3 32
- Video - MAC Address Tables on Connected Switches - 2.1.4 33
- Switching Forwarding Methods - 2.1.5 33
- Store-and-Forward Switching - 2.1.6 33
- Cut-Through Switching - 2.1.7 33
- Activity - Switch It! 34
Switching Domains - 2.2 34
- Collision Domains - 2.2.1 34
- Broadcast Domains - 2.2.2 34
- Alleviate Network Congestion - 2.2.3 35
- Check Your Understanding - Switching Domains - 2.2.4 36
Module Practice and Quiz - 2.3 36
- What Did I Learn in This Module? - 2.3.1 36
Chapter Quiz - Switching Concepts 37
Your Chapter Notes 37

Chapter 3

VLANs 39
Introduction - 3.0 39
- Why Should I Take This Module? - 3.0.1 39
- What Will I Learn to Do in This Module? - 3.0.2 39
Overview of VLANs - 3.1 39
- VLAN Definitions - 3.1.1 39
- Benefits of a VLAN Design - 3.1.2 40
- Types of VLANs - 3.1.3 41
- Packet Tracer - Who Hears the Broadcast? - 3.1.4 43
- Check Your Understanding - Overview of VLANs - 3.1.5 43
VLANs in a Multi-Switched Environment - 3.2 43
- Defining VLAN Trunks - 3.2.1 43
- Network without VLANs - 3.2.2 43
- Network with VLANs - 3.2.3 43
- VLAN Identification with a Tag - 3.2.4 44
- Native VLANs and 802.1Q Tagging - 3.2.5 44
- Voice VLAN Tagging - 3.2.6 45
- Voice VLAN Verification Example - 3.2.7 46
- Packet Tracer - Investigate a VLAN Implementation - 3.2.8 46
- Check Your Understanding - VLANs in a Multi-Switch Environment - 3.2.9 46
VLAN Configuration - 3.3 46
- VLAN Ranges on Catalyst Switches - 3.3.1 46
- VLAN Creation Commands - 3.3.2 48
- VLAN Creation Example - 3.3.3 48
- VLAN Port Assignment Commands - 3.3.4 48
- VLAN Port Assignment Example - 3.3.5 49
- Data and Voice VLANs - 3.3.6 49
- Data and Voice VLAN Example - 3.3.7 49
- Verify VLAN Information - 3.3.8 50
- Change VLAN Port Membership - 3.3.9 51
- Delete VLANs - 3.3.10 52
- Syntax Checker - VLAN Configuration - 3.3.11 53
- Packet Tracer - VLAN Configuration - 3.3.12 53
VLAN Trunks - 3.4 53
- Trunk Configuration Commands - 3.4.1 53
- Trunk Configuration Example - 3.4.2 54
- Verify Trunk Configuration - 3.4.3 54
- Reset the Trunk to the Default State - 3.4.4 55
- Packet Tracer - Configure Trunks - 3.4.5 56
- Lab - Configure VLANs and Trunking - 3.4.6 57
Dynamic Trunking Protocol - 3.5 57
- Introduction to DTP - 3.5.1 57
- Negotiated Interface Modes - 3.5.2 58
- Results of a DTP Configuration - 3.5.3 58
- Verify DTP Mode - 3.5.4 59
- Packet Tracer - Configure DTP - 3.5.5 59
- Check Your Understanding - Dynamic Trunking Protocol - 3.5.6 59
Module Practice and Quiz - 3.6 59
- Packet Tracer - Implement VLANs and Trunking - 3.6.1 59
- Lab - Implement VLANs and Trunking - 3.6.2 60
- What Did I Learn in This Module? - 3.6.3 60
Chapter Quiz - VLANs 62
Your Chapter Notes 62

Chapter 4

Inter-VLAN Routing 63
Introduction - 4.0 63
- Why Should I Take This Module? - 4.0.1 63
- What Will I Learn to Do in This Module? - 4.0.2 63
Inter-VLAN Routing Operation - 4.1 63
- What is Inter-VLAN Routing? - 4.1.1 63
- Legacy Inter-VLAN Routing - 4.1.2 64
- Router-on-a-Stick Inter-VLAN Routing - 4.1.3 64
- Inter-VLAN Routing on a Layer 3 Switch - 4.1.4 65
- Check Your Understanding - Inter-VLAN Routing Operation - 4.1.5 66
Router-on-a-Stick Inter-VLAN Routing - 4.2 66
- Router-on-a-Stick Scenario - 4.2.1 66
- S1 VLAN and Trunking Configuration - 4.2.2 66
- S2 VLAN and Trunking Configuration - 4.2.3 68
- R1 Subinterface Configuration - 4.2.4 69
- Verify Connectivity Between PC1 and PC2 - 4.2.5 70
- Router-on-a-Stick Inter-VLAN Routing Verification - 4.2.6 71
- Packet Tracer - Configure Router-on-a-Stick Inter-VLAN Routing - 4.2.7 73
- Lab - Configure Router-on-a-Stick Inter-VLAN Routing - 4.2.8 74
Inter-VLAN Routing using Layer 3 Switches - 4.3 74
- Layer 3 Switch Inter-VLAN Routing - 4.3.1 74
- Layer 3 Switch Scenario - 4.3.2 74
- Layer 3 Switch Configuration - 4.3.3 75
- Layer 3 Switch Inter-VLAN Routing Verification - 4.3.4 76
- Routing on a Layer 3 Switch - 4.3.5 77
- Routing Scenario on a Layer 3 Switch - 4.3.6 77
- Routing Configuration on a Layer 3 Switch - 4.3.7 77
- Packet Tracer - Configure Layer 3 Switching and Inter-VLAN Routing - 4.3.8 80
Troubleshoot Inter-VLAN Routing - 4.4 80
- Common Inter-VLAN Issues - 4.4.1 80
- Troubleshoot Inter-VLAN Routing Scenario - 4.4.2 81
- Missing VLANs - 4.4.3 81
- Switch Trunk Port Issues - 4.4.4 84
- Switch Access Port Issues - 4.4.5 85
- Router Configuration Issues - 4.4.6 87
- Check Your Understanding - Troubleshoot Inter-VLAN Routing - 4.4.7 89
- Packet Tracer - Troubleshoot Inter-VLAN Routing - 4.4.8 89
- Lab - Troubleshoot Inter-VLAN Routing - 4.4.9 89
Module Practice and Quiz - 4.5 89
- Packet Tracer - Inter-VLAN Routing Challenge - 4.5.1 89
- Lab - Implement Inter-VLAN Routing - 4.5.2 89
- What Did I Learn in This Module? - 4.5.3 89
- Chapter Quiz - Inter-VLAN Routing 92
Your Chapter Notes 92

Chapter 5

STP Concepts 93
Introduction - 5.0 93
- Why Should I Take This Module? - 5.0.1 93
- What Will I Learn to Do in This Module? - 5.0.2 93
Purpose of STP - 5.1 94
- Redundancy in Layer 2 Switched Networks - 5.1.1 94
- Spanning Tree Protocol - 5.1.2 94
- STP Recalculation - 5.1.3 94
- Issues with Redundant Switch Links - 5.1.4 94
- Layer 2 Loops - 5.1.5 94
- Broadcast Storm - 5.1.6 95
- The Spanning Tree Algorithm - 5.1.7 95
- Video - Observe STP Operation - 5.1.8 97
- Packet Tracer - Investigate STP Loop Prevention - 5.1.9 97
- Check Your Understanding - Purpose of STP - 5.1.10 97
STP Operations - 5.2 97
- Steps to a Loop-Free Topology - 5.2.1 97
- 1. Elect the Root Bridge - 5.2.2 98
- Impact of Default BIDs - 5.2.3 98
- Determine the Root Path Cost - 5.2.4 99
- 2. Elect the Root Ports - 5.2.5 99
- 3. Elect Designated Ports - 5.2.6 100
- 4. Elect Alternate (Blocked) Ports - 5.2.7 100
- Elect a Root Port from Multiple Equal-Cost Paths - 5.2.8 100
- STP Timers and Port States - 5.2.9 101
- Operational Details of Each Port State - 5.2.10 102
- Per-VLAN Spanning Tree - 5.2.11 103
- Check Your Understanding - STP Operations - 5.2.12 103
Evolution of STP - 5.3 103
- Different Versions of STP - 5.3.1 103
- RSTP Concepts - 5.3.2 104
- RSTP Port States and Port Roles - 5.3.3 104
- PortFast and BPDU Guard - 5.3.4 105
- Alternatives to STP - 5.3.5 105
- Check Your Understanding - Evolution of STP - 5.3.6 106
Module Practice and Quiz - 5.4 106
- What Did I Learn in This Module? - 5.4.1 106
Chapter Quiz - STP Concepts 109
Your Chapter Notes 109

Chapter 6

EtherChannel 111
Introduction - 6.0 111
- Why Should I Take This Module? - 6.0.1 111
- What Will I Learn to Do in This Module? - 6.0.2 111
EtherChannel Operation - 6.1 111
- Link Aggregation - 6.1.1 111
- EtherChannel - 6.1.2 112
- Advantages of EtherChannel - 6.1.3 112
- Implementation Restrictions - 6.1.4 112
- AutoNegotiation Protocols - 6.1.5 113
- PAgP Operation - 6.1.6 113
- PAgP Mode Settings Example - 6.1.7 114
- LACP Operation - 6.1.8 114
- LACP Mode Settings Example - 6.1.9 115
- Check Your Understanding - EtherChannel Operation 116
Configure EtherChannel - 6.2 116
- Configuration Guidelines - 6.2.1 116
- LACP Configuration Example - 6.2.2 116
- Syntax Checker - Configure EtherChannel - 6.2.3 117
- Packet Tracer - Configure EtherChannel 117
Verify and Troubleshoot EtherChannel - 6.3 117
- Verify EtherChannel - 6.3.1 117
- Common Issues with EtherChannel Configurations - 6.3.2 120
- Troubleshoot EtherChannel Example - 6.3.3 120
- Packet Tracer - Troubleshoot EtherChannel - 6.3.4 123
Module Practice and Quiz - 6.4 123
- Packet Tracer - Implement EtherChannel - 6.4.1 123
- Lab - Implement EtherChannel - 6.4.2 124
- What Did I Learn in This Module? - 6.4.3 124
Chapter Quiz - EtherChannel 126
Your Chapter Notes 126

Chapter 7

DHCPv4 127
Introduction - 7.0 127
- Why Should I Take This Module? - 7.0.1 127
- What Will I Learn to Do in This Module? - 7.0.2 127
DHCPv4 Concepts - 7.1 127
- DHCPv4 Server and Client - 7.1.1 127
- DHCPv4 Operation - 7.1.2 128
- Steps to Obtain a Lease - 7.1.3 128
- Steps to Renew a Lease - 7.1.4 129
- Check Your Understanding - DHCPv4 Concepts - 7.1.5 130
Configure a Cisco IOS DHCPv4 Server - 7.2 130
- Cisco IOS DHCPv4 Server - 7.2.1 130
- Steps to Configure a Cisco IOS DHCPv4 Server - 7.2.2 130
- Configuration Example - 7.2.3 131
- DHCPv4 Verification Commands - 7.2.4 132
- Verify DHCPv4 is Operational - 7.2.5 132
- Syntax Checker - Configure DHCPv4 - 7.2.6 134
- Disable the Cisco IOS DHCPv4 Server - 7.2.7 134
- DHCPv4 Relay - 7.2.8 135
- Other Service Broadcasts Relayed - 7.2.9 137
- Packet Tracer - Configure DHCPv4 - 7.2.10 137
Configure a DHCPv4 Client - 7.3 137
- Cisco Router as a DHCPv4 Client - 7.3.1 137
- Configuration Example - 7.3.2 138
- Home Router as a DHCPv4 Client - 7.3.3 138
- Syntax Checker - Configure a Cisco Router as DHCP Client - 7.3.4 138
Module Practice and Quiz - 7.4 138
- Packet Tracer - Implement DHCPv4 - 7.4.1 138
- Lab - Implement DHCPv4 - 7.4.2 139
- What Did I Learn in This Module? - 7.4.3 139
Chapter Quiz - DHCPv4 141
Your Chapter Notes 141

Chapter 8

SLAAC and DHCPv6 143
Introduction - 8.0 143
- Welcome - 8.0.1 143
- What Will I Learn to Do in This Module? - 8.0.2 143
IPv6 GUA Assignment - 8.1 143
- IPv6 Host Configuration - 8.1.1 143
- IPv6 Host Link-Local Address - 8.1.2 144
- IPv6 GUA Assignment - 8.1.3 144
- Three RA Message Flags - 8.1.4 145
- Check Your Understanding - IPv6 GUA Assignment - 8.1.5 145
SLAAC - 8.2 145
- SLAAC Overview - 8.2.1 145
- Enabling SLAAC - 8.2.2 146
- SLAAC Only Method - 8.2.3 147
- ICMPv6 RS Messages - 8.2.4 147
- Host Process to Generate Interface ID - 8.2.5 148
- Duplicate Address Detection - 8.2.6 148
- Check Your Understanding - SLAAC - 8.2.7 149
DHCPv6 - 8.3 149
- DHCPv6 Operation Steps - 8.3.1 149
- Stateless DHCPv6 Operation - 8.3.2 150
- Enable Stateless DHCPv6 on an Interface - 8.3.3 151
- Stateful DHCPv6 Operation - 8.3.4 151
- Enable Stateful DHCPv6 on an Interface - 8.3.5 152
- Check Your Understanding - DHCPv6 - 8.3.6 152
Configure DHCPv6 Server - 8.4 152
- DHCPv6 Router Roles - 8.4.1 152
- Configure a Stateless DHCPv6 Server - 8.4.2 153
- Configure a Stateless DHCPv6 Client - 8.4.3 155
- Configure a Stateful DHCPv6 Server - 8.4.4 157
- Configure a Stateful DHCPv6 Client - 8.4.5 160
- DHCPv6 Server Verification Commands - 8.4.6 162
- Configure a DHCPv6 Relay Agent - 8.4.7 163
- Verify the DHCPv6 Relay Agent - 8.4.8 164
- Check Your Understanding - Configure DHCPv6 Server - 8.4.9 165
Module Practice and Quiz - 8.5 165
- Lab - Configure DHCPv6 - 8.5.1 165
- What Did I Learn in This Module? - 8.5.2 166
Chapter Quiz - SLAAC and DHCPv6 168
Your Chapter Notes 168

Chapter 9

FHRP Concepts 169
Introduction - 9.0 169
- Why Should I Take This Module? - 9.0.1 169
- What Will I Learn to Do in This Module? - 9.0.2 169
First Hop Redundancy Protocols - 9.1 169
- Default Gateway Limitations - 9.1.1 169
- Router Redundancy - 9.1.2 170
- Steps for Router Failover - 9.1.3 171
- FHRP Options - 9.1.4 171
- Check Your Understanding - First Hop Redundancy Protocols - 9.1.5 172
HSRP - 9.2 172
- HSRP Overview - 9.2.1 172
- HSRP Priority and Preemption - 9.2.2 172
- HSRP States and Timers - 9.2.3 173
- Check Your Understanding - 9.2.4 174
Module Practice and Quiz - 9.3 174
- What Did I Learn in This Module? - 9.3.1 174
Chapter Quiz - FHRP Concepts 176
Packet Tracer - HSRP Configuration Guide 176
Your Chapter Notes 176

Chapter 10

LAN Security Concepts 177
Introduction - 10.0 177
- Why Should I Take This Module? - 10.0.1 177
- What will I learn in this module? - 10.0.2 177
Endpoint Security - 10.1 177
- Network Attacks Today - 10.1.1 177
- Network Security Devices - 10.1.2 178
- Endpoint Protection - 10.1.3 178
- Cisco Email Security Appliance - 10.1.4 179
- Cisco Web Security Appliance - 10.1.5 179
- Check Your Understanding - Endpoint Security 180
Access Control - 10.2 180
- Authentication with a Local Password - 10.2.1 180
- AAA Components - 10.2.2 181
- Authentication - 10.2.3 181
- Authorization - 10.2.4 181
- Accounting - 10.2.5 181
- 802.1X - 10.2.6 182
- Check Your Understanding - Access Control - 10.2.7 182
Layer 2 Security Threats 182
- Layer 2 Vulnerabilities - 10.3.1 182
- Switch Attack Categories - 10.3.2 183
- Switch Attack Mitigation Techniques - 10.3.3 183
- Check Your Understanding - Layer 2 Security Threats - 10.3.4 184
MAC Address Table Attack - 10.4 184
- Switch Operation Review - 10.4.1 184
- MAC Address Table Flooding - 10.4.2 184
- MAC Address Table Attack Mitigation - 10.4.3 185
- Check Your Understanding - MAC Address Table Attacks - 10.4.4 186
LAN Attacks - 10.5 186
- Video - VLAN and DHCP Attacks - 10.5.1 186
- VLAN Hopping Attacks - 10.5.2 186
- VLAN Double-Tagging Attack - 10.5.3 186
- DHCP Messages - 10.5.4 187
- DHCP Attacks - 10.5.5 187
- Video - ARP Attacks, STP Attacks, and CDP Reconnaissance - 10.5.6 188
ARP Attacks - 10.5.7 188
- Address Spoofing Attack - 10.5.8 189
- STP Attack - 10.5.9 190
- CDP Reconnaissance - 10.5.10 190
- Check Your Understanding - LAN Attacks - 10.5.11 191
Module Practice and Quiz - 10.6 191
- What Did I Learn in This Module? - 10.6.1 191
Chapter Quiz - LAN Security Concepts 193
Your Chapter Notes 193

Chapter 11

Switch Security Configuration 195
- Introduction - 11.0 195
- Why Should I Take This Module? - 11.0.1 195
- What will I learn in this module? - 11.0.2 195
Implement Port Security - 11.1 195
- Secure Unused Ports - 11.1.1 195
- Mitigate MAC Address Table Attacks - 11.1.2 196
- Enable Port Security - 11.1.3 196
- Limit and Learn MAC Addresses - 11.1.4 198
- Port Security Aging - 11.1.5 200
- Port Security Violation Modes - 11.1.6 201
- Ports in error-disabled State - 11.1.7 202
- Verify Port Security - 11.1.8 203
- Syntax Checker - Implement Port Security - 11.1.9 205
- Packet Tracer - Implement Port Security 205
Mitigate VLAN Attacks - 11.2 206
- VLAN Attacks Review - 11.2.1 206
- Steps to Mitigate VLAN Hopping Attacks - 11.2.2 206
- Syntax Checker - Mitigate VLAN Hopping Attacks - 11.2.3 207
Mitigate DHCP Attacks - 11.3 207
- DHCP Attack Review - 11.3.1 207
- DHCP Snooping - 11.3.2 207
- Steps to Implement DHCP Snooping - 11.3.3 208
- DHCP Snooping Configuration Example - 11.3.4 208
- Syntax Checker - Mitigate DHCP Attacks - 11.3.5 209
Mitigate ARP Attacks - 11.4 210
- Dynamic ARP Inspection - 11.4.1 210
- DAI Implementation Guidelines - 11.4.2 210
- DAI Configuration Example - 11.4.3 210
- Syntax Checker - Mitigate ARP Attacks - 11.4.4 211
Mitigate STP Attacks - 11.5 211
- PortFast and BPDU Guard - 11.5.1 211
- Configure PortFast - 11.5.2 212
- Configure BPDU Guard - 11.5.3 213
- Syntax Checker - Mitigate STP Attacks - 11.5.4 214
Module Practice and Quiz - 11.6 214
- Packet Tracer - Switch Security Configuration - 11.6.1 214
- Lab - Switch Security Configuration - 11.6.2 215
- What Did I Learn in This Module? - 11.6.3 215
Chapter Quiz - Switch Security Configuration 217
Your Chapter Notes 217

Chapter 12

WLAN Concepts 219
- Introduction - 12.0 219
- Why Should I Take This Module? - 12.0.1 219
- What will I learn in this module? - 12.0.2 219
Introduction to Wireless - 12.1 219
- Benefits of Wireless - 12.1.1 219
- Types of Wireless Networks - 12.1.2 220
- Wireless Technologies - 12.1.3 220
- 802.11 Standards - 12.1.4 221
- Radio Frequencies - 12.1.5 222
- Wireless Standards Organizations - 12.1.6 223
- Check Your Understanding - Introduction to Wireless - 12.1.7 223
WLAN Components - 12.2 223
- Video - WLAN Components - 12.2.1 223
- Wireless NICs - 12.2.2 223
- Wireless Home Router - 12.2.3 224
- Wireless Access Points - 12.2.4 224
- AP Categories - 12.2.5 224
- Wireless Antennas - 12.2.6 225
- Check Your Understanding - WLAN Components - 12.2.7 226
WLAN Operation - 12.3 226
- Video - WLAN Operation - 12.3.1 226
- 802.11 Wireless Topology Modes - 12.3.2 226
- BSS and ESS - 12.3.3 226
- 802.11 Frame Structure - 12.3.4 227
- CSMA/CA - 12.3.5 227
- Wireless Client and AP Association - 12.3.6 228
- Passive and Active Discover Mode - 12.3.7 229
- Check Your Understanding - WLAN Operation - 12.3.8 229
CAPWAP Operation - 12.4 229
- Video - CAPWAP - 12.4.1 229
- Introduction to CAPWAP - 12.4.2 229
- Split MAC Architecture - 12.4.3 230
- DTLS Encryption - 12.4.4 230
- FlexConnect APs - 12.4.5 230
- Check Your Understanding - CAPWAP Operation - 12.4.6 231
Channel Management - 12.5 231
- Frequency Channel Saturation - 12.5.1 231
- Channel Selection - 12.5.2 231
- Plan a WLAN Deployment - 12.5.3 232
- Check Your Understanding - Channel Management - 12.5.4 233
WLAN Threats - 12.6 233
- Video - WLAN Threats - 12.6.1 233
- Wireless Security Overview - 12.6.2 233
- DoS Attacks - 12.6.3 233
- Rogue Access Points - 12.6.4 234
- Man-in-the-Middle Attack - 12.6.5 234
- Check Your Understanding - WLAN Threats - 12.6.6 234
Secure WLANs - 12.7 234
- Video - Secure WLANs - 12.7.1 234
- SSID Cloaking and MAC Address Filtering - 12.7.2 235
- 802.11 Original Authentication Methods - 12.7.3 235
- Shared Key Authentication Methods - 12.7.4 235
- Authenticating a Home User - 12.7.5 236
- Encryption Methods - 12.7.6 236
- Authentication in the Enterprise - 12.7.7 237
- WPA3 - 12.7.8 237
- Check Your Understanding - Secure WLANs - 12.7.9 238
Module Practice and Quiz - 12.8 238
- What Did I Learn in This Module? - 12.8.1 238
Chapter Quiz - WLAN Concepts 241
Your Chapter Notes 241

Chapter 13

WLAN Configuration 243
Introduction - 13.0 243
- Why Should I Take This Module? - 13.0.1 243
- What Will I Learn to Do in This Module? - 13.0.2 243
Remote Site WLAN Configuration - 13.1 243
- Video - Configure a Wireless Network - 13.1.1 243
- The Wireless Router - 13.1.2 244
- Log in to the Wireless Router - 13.1.3 244
- Basic Network Setup - 13.1.4 244
- Basic Wireless Setup - 13.1.5 245
- Configure a Wireless Mesh Network - 13.1.6 247
- NAT for IPv4 - 13.1.7 247
- Quality of Service - 13.1.8 247
- Port Forwarding - 13.1.9 248
- Packet Tracer - Configure a Wireless Network - 13.1.10 248
- Lab - Configure a Wireless Network - 13.1.11 248
Configure a Basic WLAN on the WLC - 13.2 248
- Video - Configure a Basic WLAN on the WLC - 13.2.1 248
- WLC Topology - 13.2.2 249
- Log in to the WLC - 13.2.3 249
- View AP Information - 13.2.4 249
- Advanced Settings - 13.2.5 250
- Configure a WLAN - 13.2.6 250
- Packet Tracer - Configure a Basic WLAN on the WLC - 13.2.7 252
Configure a WPA2 Enterprise WLAN on the WLC - 13.3 252
- Video - Define an SNMP and RADIUS Server on the WLC - 13.3.1 252
- SNMP and RADIUS - 13.3.2 252
- Configure SNMP Server Information - 13.3.3 253
- Configure RADIUS Server Information - 13.3.4 253
- Video - Configure a VLAN for a New WLAN - 13.3.5 253
- Topology with VLAN 5 Addressing - 13.3.6 253
- Configure a New Interface - 13.3.7 254
- Video - Configure a DHCP Scope - 13.3.8 255
- Configure a DHCP Scope - 13.3.9 255
- Video - Configure a WPA2 Enterprise WLAN - 13.3.10 256
- Configure a WPA2 Enterprise WLAN - 13.3.11 256
- Packet Tracer - Configure a WPA2 Enterprise WLAN on the WLC - 13.3.12 257
Troubleshoot WLAN Issues - 13.4 257
- Troubleshooting Approaches - 13.4.1 257
- Wireless Client Not Connecting - 13.4.2 258
- Troubleshooting When the Network Is Slow - 13.4.3 259
- Updating Firmware - 13.4.4 259
- Packet Tracer - Troubleshoot WLAN Issues - 13.4.5 260
Module Practice and Summary - 13.5 260
- Packet Tracer - WLAN Configuration - 13.5.1 260
- What Did I Learn in This Module? - 13.5.2 260
Chapter Quiz - WLAN Configuration 262
Your Chapter Notes 262

Chapter 14

Routing Concepts 263
Introduction - 14.0 263
- Why Should I Take This Module? - 14.0.1 263
- What Will I Learn to Do in This Module? - 14.0.2 263
Path Determination - 14.1 263
- Two Functions of Router - 14.1.1 263
- Router Functions Example - 14.1.2 264
- Best Path Equals Longest Match - 14.1.3 264
- IPv4 Address Longest Match Example - 14.1.4 264
- IPv6 Address Longest Match Example - 14.1.5 265
- Build the Routing Table - 14.1.6 265
- Check Your Understanding - Path Determination - 14.1.7 266
Packet Forwarding - 14.2 266
- Packet Forwarding Decision Process - 14.2.1 266
- End-to-End Packet Forwarding - 14.2.2 267
- Packet Forwarding Mechanisms - 14.2.3 268
- Check Your Understanding - Packet Forwarding - 14.2.4 269
Basic Router Configuration Review - 14.3 269
- Topology - 14.3.1 269
- Configuration Commands - 14.3.2 269
- Verification Commands - 14.3.3 271
- Filter Command Output - 14.3.4 276
- Packet Tracer - Basic Router Configuration Review - 14.3.5 278
IP Routing Table - 14.4 278
- Route Sources - 14.4.1 278
- Routing Table Principles - 14.4.2 280
- Routing Table Entries - 14.4.3 281
- Directly Connected Networks - 14.4.4 281
- Static Routes - 14.4.5 282
- Static Routes in the IP Routing Table - 14.4.6 282
- Dynamic Routing Protocols - 14.4.7 283
- Dynamic Routes in the IP Routing Table - 14.4.8 283
- Default Route - 14.4.9 284
- Structure of an IPv4 Routing Table - 14.4.10 285
- Structure of an IPv6 Routing Table - 14.4.11 286
- Administrative Distance - 14.4.12 287
- Check Your Understanding - IP Routing Table - 14.4.13 288
Static and Dynamic Routing - 14.5 288
- Static or Dynamic? - 14.5.1 288
- Dynamic Routing Evolution - 14.5.2 289
- Dynamic Routing Protocol Concepts - 14.5.3 290
- Best Path - 14.5.4 291
- Load Balancing - 14.5.5 291
- Check Your Understanding - Dynamic and Static Routing - 14.5.6 292
Module Practice and Quiz - 14.6 292
- What Did I Learn in This Module? - 14.6.1 292
Chapter Quiz - Routing Concepts 295
Your Chapter Notes 295

Chapter 15

IP Static Routing 297
Introduction - 15.0 297
- Why Should I Take This Module? - 15.0.1 297
- What Will I Learn to Do in This Module? - 15.0.2 297
Static Routes - 15.1 297
- Types of Static Routes - 15.1.1 297
- Next-Hop Options - 15.1.2 298
- IPv4 Static Route Command - 15.1.3 298
- IPv6 Static Route Command - 15.1.4 299
- Dual-Stack Topology - 15.1.5 300
- IPv4 Starting Routing Tables - 15.1.6 300
- IPv6 Starting Routing Tables - 15.1.7 301
- Check Your Understanding - Static Routes - 15.1.8 303
Configure IP Static Routes - 15.2 303
- IPv4 Next-Hop Static Route - 15.2.1 303
- IPv6 Next-Hop Static Route - 15.2.2 304
- IPv4 Directly Connected Static Route - 15.2.3 305
- IPv6 Directly Connected Static Route - 15.2.4 306
- IPv4 Fully Specified Static Route - 15.2.5 307
- IPv6 Fully Specified Static Route - 15.2.6 308
- Verify a Static Route - 15.2.7 308
- Syntax Checker - Configure Static Routes - 15.2.8 310
Configure IP Default Static Routes - 15.3 311
- Default Static Route - 15.3.1 311
- Configure a Default Static Route - 15.3.2 311
- Verify a Default Static Route - 15.3.3 312
- Syntax Checker - Configure Default Static Routes - 15.3.4 313
Configure Floating Static Routes - 15.4 313
- Floating Static Routes - 15.4.1 313
- Configure IPv4 and IPv6 Floating Static Routes - 15.4.2 314
- Test the Floating Static Route - 15.4.3 315
- Syntax Checker - Configure Floating Static Route - 15.4.4 316
Configure Static Host Routes - 15.5 316
- Host Routes - 15.5.1 316
- Automatically Installed Host Routes - 15.5.2 316
- Static Host Routes - 15.5.3 317
- Configure Static Host Routes - 15.5.4 317
- Verify Static Host Routes - 15.5.5 317
- Configure IPv6 Static Host Route with Link-Local Next-Hop - 15.5.6 318
- Syntax Checker - Configure Static Host Routes - 15.5.7 318
Module Practice and Quiz - 15.6 318
- Packet Tracer - Configure IPv4 and IPv6 Static and Default Routes - 15.6.1 318
- Lab - Configure IPv4 and IPv6 Static and Default Routes - 15.6.2 318
- What Did I Learn in This Module? - 15.6.3 319
Chapter Quiz - IP Static Routing 321
Your Chapter Notes 321

Chapter 16

Troubleshoot Static and Default Routes 323
Introduction - 16.0 323
- Why Should I Take This Module? - 16.0.1 323
- What Will I Learn to Do in This Module? - 16.0.2 323
Packet Processing with Statics Routes - 16.1 323
- Static Routes and Packet Forwarding - 16.1.1 323
- Check Your Understanding - Packet Processing with Static Routes - 16.1.2 324
- Troubleshoot IPv4 Static and Default Route Configuration - 16.2 324
Network Changes - 16.2.1 324
- Common Troubleshooting Commands - 16.2.2 324
- Solve a Connectivity Problem - 16.2.3 326
- Syntax Checker - Troubleshoot IPv4 Static and Default Routes - 16.2.4 329
Module Practice and Quiz - 16.3 329
- Packet Tracer - Troubleshoot Static and Default Routes - 16.3.1 329
- Lab - Troubleshoot Static and Default Routes - 16.3.2 330
- What Did I Learn in This Module? - 16.3.3 330
Chapter Quiz - Troubleshoot Static and Default Routes 332
Your Chapter Notes 332

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