Cover image for CCNA portable command guide : CCNA self-study
Title:
CCNA portable command guide : CCNA self-study
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Publication Information:
Indianapolis, IN : Cisco Press, 2006
ISBN:
9781587201585

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30000010116302 TK5105.5 E464 2006 Open Access Book Book
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Summary

Summary

Here are all the CCNA-level commands in one compact, portable resource. The features are: access all CCNA commands - use as a quick, offline resource for research and solutions; logical how-to topic groupings provide one-stop research; great for review before CCNA certification exams; compact size makes it easy to carry with you, wherever you go; and Create your own journal section with blank, lined pages allows you to personalize the book for your needs. Preparing for the CCNA(R) exam? Working as a network administrator? Here are all the CCNA-level commands you need in one condensed, portable resource. The CCNA Portable Command Guide is filled with valuable, easy-to-access information, and portable enough for use whether you're in the server room or the equipment closet. This book will help you memorize commands and concepts as you work to pass the CCNA exam (INTRO 640-821, ICND 640-811, or CCNA 640-801). The guide summarizes all CCNA certification-level Cisco IOS(R) Software commands, keywords, command arguments, and associated prompts, providing you with tips and examples of how to apply the commands to real-world scenarios. Configuration examples throughout the book provi


Author Notes

Scott Empson is an instructor in the telecommunications department at the Northern Alberta Institute of Technology in Edmonton, Alberta, Canada


Table of Contents

Introductionp. xx
Part I TCP/IPp. 1
Chapter 1 How to Subnetp. 3
Class A-E Addressesp. 3
Converting Between Decimal Numbers and Binaryp. 4
Subnetting a Class C Network Using Binaryp. 4
Subnetting a Class B Network Using Binaryp. 8
Binary ANDingp. 12
Question 1p. 12
Answerp. 12
Question 2p. 13
Answerp. 13
So Why AND?p. 14
Question 3p. 14
Answerp. 14
Shortcuts in Binary ANDingp. 15
Question 4p. 15
Answerp. 15
Proofp. 15
Question 5p. 16
Answerp. 16
Question 6p. 16
Answerp. 16
The Enhanced Bob Maneuver for Subnettingp. 16
Chapter 2 VLSMp. 21
IP Subnet Zerop. 21
VLSM Examplep. 22
Step 1 Determine How Many H Bits Will Be Needed to Satisfy the Largest Networkp. 23
Step 2 Pick a Subnet for the Largest Network to Usep. 23
Step 3 Pick the Next Largest Network to Work Withp. 24
Step 4 Pick the Third Largest Network to Work Withp. 25
Step 5 Determine Network Numbers for Serial Linksp. 27
Chapter 3 Route Summarizationp. 29
Example for Understanding Route Summarizationp. 29
Step 1 Summarize Winnipeg's Routesp. 30
Step 2 Summarize Calgary's Routesp. 31
Step 3 Summarize Edmonton's Routesp. 31
Step 4 Summarize Vancouver's Routesp. 32
Route Summarization and Route Flappingp. 34
Requirements for Route Summarizationp. 34
Part II Introduction to Cisco Devicesp. 35
Chapter 4 Cables and Connectionsp. 37
Connecting a Rollover Cable to Your Router or Switchp. 37
Terminal Settingsp. 37
LAN Connectionsp. 38
Serial Cable Typesp. 39
Which Cable to Use?p. 40
568A Versus 568B Cablesp. 42
Chapter 5 The Command-Line Interfacep. 43
Shortcuts for Entering Commandsp. 43
Using the [characters not reproducible] Key 'to Complete Commandsp. 43
Using the Question Mark for Helpp. 43
enable Commandp. 44
exit Commandp. 44
disable Commandp. 45
logout Commandp. 45
Setup Modep. 45
Keyboard Helpp. 45
History Commandsp. 46
show Commandsp. 47
Part III Configuring a Routerp. 49
Chapter 6 Configuring a Single Cisco Routerp. 51
Router Modesp. 51
Global Configuration Modep. 52
Configuring a Router Namep. 52
Configuring Passwordsp. 52
Password Encryptionp. 53
show Commandsp. 53
Interface Namesp. 54
Moving Between Interfacesp. 57
Configuring a Serial Interfacep. 57
Configuring an Ethernet/Fast Ethernet Interfacep. 57
Creating an MOTD Bannerp. 58
Setting the Clock Time Zonep. 58
Assigning a Local Host Name to an IP Addressp. 58
no ip domain-lookup Commandp. 59
logging synchronous Commandp. 59
exec-timeout Commandp. 60
Saving Configurationsp. 60
Erasing Configurationsp. 60
Configuration Example: Basic Router Configurationp. 60
Part IV Routingp. 65
Chapter 7 Static Routingp. 67
Static Routingp. 67
The permanent Keyword (Optional)p. 68
Static Routes and Administrative Distance (Optional)p. 68
Default Routingp. 69
Verifying Static Routesp. 69
Configuration Example: Static Routesp. 70
Chapter 8 RIPp. 73
IP Classlessp. 73
RIP Routing: Mandatory Commandsp. 73
RIP Routing: Optional Commandsp. 74
RIP Version 2p. 75
Troubleshooting RIP Issuesp. 75
RIP Version 2: Mandatory Commandsp. 76
RIP Version 2: Optional Commandsp. 76
Configuration Example: RIP-2 Routingp. 76
Chapter 9 IGRPp. 79
IGRP Routing: Mandatory Commandsp. 79
IGRP Routing: Optional Commandsp. 80
Troubleshooting IGRP Issuesp. 80
Chapter 10 EIGRPp. 81
Configuring EIGRPp. 81
EIGRP Auto Summarizationp. 82
Verifying EIGRPp. 82
Troubleshooting EIGRPp. 83
Configuration Example: EIGRPp. 83
Chapter 11 Single-Area OSPFp. 87
OSPF Routing: Mandatory Commandsp. 87
Wildcard Masksp. 88
Using Wildcard Masks with OSPF Areasp. 88
OSPF Routing: Optional Commandsp. 89
Loopback Interfacesp. 89
OSPF DR/BDR Electionp. 89
Modifying OSPF Cost Metricsp. 89
OSPF Authentication: Simplep. 90
OSPF Authentication Using MD5 Encryptionp. 90
OSPF Timersp. 91
Propagating a Default Routep. 91
Verifying OSPF Configurationp. 91
Troubleshooting OSPFp. 92
Configuration Example: Single-Area OSPFp. 93
Part V Switchesp. 97
Chapter 12 Configuring a Switchp. 99
Help Commandsp. 99
Command Modesp. 99
Verifying Commandsp. 100
Resetting Switch Configurationp. 100
Setting Host Namesp. 101
Setting Passwords: 1900 Series Switchesp. 101
Setting Passwords: 2900/2950 Series Switchesp. 102
Setting IP Address and Default Gatewayp. 102
Setting Interface Descriptionsp. 103
Setting Duplex Settings: 1900 or 2900/2950 Series Switchesp. 104
Setting Speed Settings: 2900/2950 Series Switchesp. 104
Setting Web-Based Interface for Configuration: 1900 and 2900/2950 Series Switchesp. 104
Managing the MAC Address Table: 1900 and 2900/2950 Series Switchesp. 105
Configuring Static MAC Addressesp. 105
Port Secrity: 1900 Series Switchesp. 105
Verifying Port Securityp. 106
Configuration Example: 2900 Series Switchp. 107
Chapter 13 Spanning Tree Protocol and EtherChannelp. 111
Spanning Tree Protocolp. 111
Spanning-Tree Verificationp. 111
Change Spanning-Tree Priority of a Switchp. 112
Changing the Cost of Spanning Tree on an Interfacep. 112
Changing the State of Spanning Tree on an Interfacep. 112
Spanning Tree Portfast BPDU Guard Commandp. 113
EtherChannelp. 113
EtherChannel Configurationp. 113
Verification of EtherChannelp. 114
EtherChannel Tipsp. 114
Chapter 14 VLANsp. 115
Displaying VLAN Informationp. 115
Creating Static VLANsp. 116
Assigning Ports to VLANsp. 117
Assigning Ports Using the range Command (2950 Switch Only)p. 118
Saving VLAN Configurationsp. 118
Erasing VLAN Configurationsp. 119
Troubleshooting VLANsp. 120
Configuration Example: 2900 Switch Configurationp. 121
Chapter 15 VTP and Inter-VLAN Communicationp. 125
Configuring ISL Trunksp. 125
Configuring Dot1Q Trunksp. 126
Verifying Trunkingp. 126
VTP Configurationp. 127
Confirming VTP Configurationp. 128
Inter-VLAN Communication: Router-on-a-Stickp. 129
Router-on-a-Stick Tipsp. 129
Configuration Example: VTP and Inter-VLAN Routingp. 130
Part VI Network Administration and Troubleshootingp. 141
Chapter 16 Backing Up and Restoring Cisco IOS Software and Configurationsp. 143
Boot System Commandsp. 143
Cisco IOS Software Prerelease 12.0 Commands Versus Cisco IOS Software 12.x Commandsp. 144
Backing Up Configurationsp. 144
Restoring Configurationsp. 145
Backing Up IOS to a TFTP Serverp. 145
Restoring/Upgrading IOS from a TFTP Serverp. 146
Restoring IOS from ROMmon Mode Using Xmodemp. 147
Restoring the IOS Using the ROMmon Environmental Variables and tftpdnld Commandp. 150
Upgrading Catalyst 1900 Firmware with a TFTP Serverp. 150
Copying IOS to TFTP Serverp. 151
Firmware Upgrade of Catalyst 2950 Series Switchesp. 152
Configuration Example: 2900 Series Switchp. 153
Chapter 17 Password Recovery Procedures and the Configuration Registerp. 157
The Configuration Registerp. 157
The Configuration Register: A Visual Representationp. 157
The Configuration Register-What the Bits Meanp. 158
The Boot Fieldp. 158
Console Terminal Baud Rate Settingsp. 159
Changing the Console Line Speed-CLIp. 159
Changing the Console Line Speed-ROM Monitor Mode-1700/2600 Seriesp. 159
Password Recovery Procedures for Cisco Routersp. 160
Password Recovery for 1900 Series Switchesp. 162
Password Recovery for 2900/2950 Series Switchesp. 164
Chapter 18 CDPp. 167
Cisco Discovery Protocolp. 167
Chapter 19 Telnetp. 169
Telnetp. 169
Chapter 20 Ping and traceroutep. 173
ICMP Redirect Messagesp. 173
ping Commandp. 173
pingp. 174
traceroutep. 175
Chapter 21 SNMP and Syslogp. 177
Configuring SNMPp. 177
Configuring Syslogp. 177
Chapter 22 Basic Troubleshootingp. 179
Viewing the Routing Tablep. 179
Determining the Gateway of Last Resortp. 180
Determining the Last Routing Updatep. 180
OSI Layer 3 Testingp. 180
OSI Layer 7 Testingp. 181
Interpreting the show interface Commandp. 181
Clearing Interface Countersp. 181
Using CDP to Troubleshootp. 182
traceroute Commandp. 182
show controllers Commandp. 182
debug Commandsp. 182
Using Timestampsp. 183
OS IP Verification Commandsp. 183
ip http server Commandp. 184
netstat Commandp. 184
Part VII Managing IP Servicesp. 185
Chapter 23 NATp. 187
Configuring Dynamic NAT: One Private to One Public Address Translationp. 187
Configuring PAT: Many Private to One Public Address Translationp. 189
Configuring Static NAT: One Private to One Permanent Public Address Translationp. 191
Verifying NAT and PAT Configurationp. 192
Troubleshooting NAT and PAT Configurationp. 192
Configuration Example: Port Address Translationp. 192
Chapter 24 DHCPp. 197
Configuring DHCPp. 197
Verifying and Troubleshooting DHCP Configurationp. 198
Configuring a DHCP Helper Addressp. 198
Configuration Example: DHCPp. 198
Part VIII Wide-Area Networksp. 203
Chapter 25 HDLC and PPPp. 205
Configuring HDLC Encapsulation on a Serial Linep. 205
Configuring PPP on a Serial Line (Mandatory Commands)p. 205
Configuring PPP on a Serial Line (Optional Commands): Compressionp. 206
Configuring PPP on a Serial Line (Optional Commands): Link Qualityp. 206
Configuring PPP on a Serial Line (Optional Commands): Multilinkp. 206
Configuring PPP on a Serial Line (Optional Commands): Authenticationp. 206
Verifying or Troubleshooting a Serial Link/PPP Encapsulationp. 208
Configuration Example: PPPp. 208
Chapter 26 ISDN and DDRp. 211
Configuring ISDN BRI: Setting the Switch Typep. 211
Configuring ISDN BRI: Setting SPIDsp. 212
Configuring ISDN PRIp. 212
Verifying ISDN Configurationp. 213
Troubleshooting ISDNp. 213
Configuring Legacy DDRp. 214
Configuring Dialer Profiles with DDRp. 215
Configuration Example: ISDN and DDR with No Dialer Profilesp. 218
Chapter 27 Frame Relayp. 223
Configuring Frame Relay: Setting the Frame Relay Encapsulation Typep. 223
Configuring Frame Relay: Setting the Frame Relay Encapsulation LMI Typep. 224
Configuring Frame Relay: Setting the Frame Relay DLCI Numberp. 224
Configuring a Frame Relay Mapp. 224
Configuring a Description of the Interface (Optional)p. 225
Configuring Frame Relay Using Subinterfacesp. 225
Verifying Frame Relayp. 226
Troubleshooting Frame Relayp. 226
Configuration Example: Frame Relayp. 227
Part IX Network Securityp. 233
Chapter 28 IP Access Control List Securityp. 235
Access List Numbersp. 235
ACL Keywordsp. 235
Creating Standard ACLsp. 236
Applying a Standard ACL to an Interfacep. 237
Verifying ACLsp. 237
Removing an ACLp. 238
Creating Extended ACLsp. 238
The established Keywordp. 239
Creating Named ACLsp. 240
Using Sequence Numbers in Named ACLsp. 241
Removing Specific Lines in a Named ACL Using Sequence Numbersp. 242
Sequence Number Tipsp. 242
Including Comments About Entries in ACLsp. 242
Applying an Extended ACL to an Interfacep. 243
Restricting Virtual Terminal Accessp. 243
Configuration Example: Access Control Listsp. 244
Part X Appendixesp. 247
Appendix A Complete Configuration Examplep. 249
Appendix B Binary/Hex/Decimal Conversion Chartp. 265
Appendix C Create Your Own Journal Herep. 275