CCNA Self-Study: CCNA Portable Command Guide

book cover
CCNA Self-Study: CCNA Portable Command Guide
By Scott Empson
Publisher: Cisco Press
Pub Date: November 11, 2005
ISBN: 1-58720-158-5
Pages: 312

Table of Contents

All the CCNA-level commands in one compact, portable resource 

  • Access all CCNA commandsuse 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

  • "Create your own journal" section with blank, lined pages allows you to personalize the book for your needs

Preparing for the CCNA® 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® 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 provide you with a better understanding of how these commands are used in simple network designs.


Nine CCNA topic areas are covered, including:

  • TCP/IP

  • An Introduction to Cisco Devices

  • Configuring a Router

  • Routing

  • Switches

  • Network Administration and Troubleshooting

  • Managing IP Services

  • WANs

  • Network Security

This book is part of the Cisco Press® Certification Self-Study Product Family, which offers readers a self-paced study routine for Cisco certification exams. Titles in the Cisco Press Certification Self-Study Product Family are part of a recommended learning program from Cisco Systems® that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press.

book cover
CCNA Self-Study: CCNA Portable Command Guide
By Scott Empson
Publisher: Cisco Press
Pub Date: November 11, 2005
ISBN: 1-58720-158-5
Pages: 312

Table of Contents

   About the Author
   About the Technical Reviewers
   Icons Used in This Book
   Command Syntax Conventions
      Networking Devices Used in the Preparation of This Book
      Who Should Read This Book?
      Organization of This Book
      Did I Miss Anything?
    Part I:  TCP/IP
      Chapter 1.  How to Subnet
      Class AE Addresses
      Converting Between Decimal Numbers and Binary
      Subnetting a Class C Network Using Binary
      Subnetting a Class B Network Using Binary
      Binary ANDing
      The Enhanced Bob Maneuver for Subnetting (or How to Subnet Anything in Under a Minute)
      Chapter 2.  VLSM
      IP Subnet Zero
      VLSM Example
      Chapter 3.  Route Summarization
      Example for Understanding Route Summarization
      Route Summarization and Route Flapping
      Requirements for Route Summarization
    Part II:  Introduction to Cisco Devices
      Chapter 4.  Cables and Connections
      Connecting a Rollover Cable to Your Router or Switch
      Terminal Settings
      LAN Connections
      Serial Cable Types
      Which Cable to Use?
      568A Versus 568B Cables
      Chapter 5.  The Command-Line Interface
      Shortcuts for Entering Commands
      Using the Key to Complete Commands
      Using the Question Mark for Help
      enable Command
      exit Command
      disable Command
      logout Command
      Setup Mode
      Keyboard Help
      History Commands
      show Commands
    Part III:  Configuring a Router
      Chapter 6.  Configuring a Single Cisco Router
      Router Modes
      Global Configuration Mode
      Configuring a Router Name
      Configuring Passwords
      Password Encryption
      show Commands
      Interface Names
      Moving Between Interfaces
      Configuring a Serial Interface
      Configuring an Ethernet/Fast Ethernet Interface
      Creating an MOTD Banner
      Setting the Clock Time Zone
      Assigning a Local Host Name to an IP Address
      no ip domain-lookup Command
      logging synchronous Command
      exec-timeout Command
      Saving Configurations
      Erasing Configurations
      Configuration Example: Basic Router Configuration
    Part IV:  Routing
      Chapter 7.  Static Routing
      Static Routing
      Default Routing
      Verifying Static Routes
      Configuration Example: Static Routes
      Chapter 8.  RIP
      IP Classless
      RIP Routing: Mandatory Commands
      RIP Routing: Optional Commands
      RIP Version 2
      Troubleshooting RIP Issues
      RIP Version 2: Mandatory Commands
      RIP Version 2: Optional Commands
      Configuration Example: RIP-2 Routing
      Chapter 9.  IGRP
      IGRP Routing: Mandatory Commands
      IGRP Routing: Optional Commands
      Troubleshooting IGRP Issues
      Chapter 10.  EIGRP
      Configuring EIGRP
      EIGRP Auto Summarization
      Verifying EIGRP
      Troubleshooting EIGRP
      Configuration Example: EIGRP
      Chapter 11.  Single-Area OSPF
      OSPF Routing: Mandatory Commands
      Wildcard Masks
      Using Wildcard Masks with OSPF Areas
      OSPF Routing: Optional Commands
      Loopback Interfaces
      OSPF DR/BDR Election
      Modifying OSPF Cost Metrics
      OSPF Authentication: Simple
      OSPF Authentication Using MD5 Encryption
      OSPF Timers
      Propagating a Default Route
      Verifying OSPF Configuration
      Troubleshooting OSPF
      Configuration Example: Single-Area OSPF
    Part V:  Switches
      Chapter 12.  Configuring a Switch
      Help Commands
      Command Modes
      Verifying Commands
      Resetting Switch Configuration
      Setting Host Names
      Setting Passwords: 1900 Series Switches
      Setting Passwords: 2900/2950 Series Switches
      Setting IP Address and Default Gateway
      Setting Interface Descriptions
      Setting Duplex Settings: 1900 or 2900/2950 Series Switches
      Setting Speed Settings: 2900/2950 Series Switches
      Setting Web-Based Interface for Configuration: 1900 and 2900/2950 Series Switches
      Managing the MAC Address Table: 1900 and 2900/2950 Series Switches
      Configuring Static MAC Addresses
      Port Security: 1900 Series Switches
      Verifying Port Security
      Configuration Example: 2900 Series Switch
      Chapter 13.  Spanning Tree Protocol and EtherChannel
      Spanning Tree Protocol
      Chapter 14.  VLANs
      Displaying VLAN Information
      Creating Static VLANs
      Assigning Ports to VLANs
      Assigning Ports Using the range Command (2950 Switch Only)
      Saving VLAN Configurations
      Erasing VLAN Configurations
      Troubleshooting VLANs
      Configuration Example: 2900 Switch Configuration
      Chapter 15.  VTP and Inter-VLAN Communication
      Configuring ISL Trunks
      Configuring Dot1Q Trunks
      Verifying Trunking
      VTP Configuration
      Confirming VTP Configuration
      Inter-VLAN Communication: Router-on-a-Stick
      Router-on-a-Stick Tips
      Configuration Example: VTP and Inter-VLAN Routing
    Part VI:  Network Administration and Troubleshooting
      Chapter 16.  Backing Up and Restoring Cisco IOS Software and Configurations
      Boot System Commands
      Cisco IOS Software Prerelease 12.0 Commands Versus Cisco IOS Software 12.x Commands
      Backing Up Configurations
      Restoring Configurations
      Backing Up IOS to a TFTP Server
      Restoring/Upgrading IOS from a TFTP Server
      Restoring IOS from ROMmon Mode Using Xmodem
      Restoring the IOS Using the ROMmon Environmental Variables and tftpdnld Command
      Upgrading Catalyst 1900 Firmware with a TFTP Server
      Copying IOS to TFTP Server
      Firmware Upgrade of Catalyst 2950 Series Switches
      Configuration Example: 2900 Series Switch
      Chapter 17.  Password Recovery Procedures and the Configuration Register
      The Configuration Register
      Password Recovery Procedures for Cisco Routers
      Password Recovery for 1900 Series Switches
      Password Recovery for 2900/2950 Series Switches
      Chapter 18.  CDP
      Cisco Discovery Protocol
      Chapter 19.  Telnet
      Chapter 20.  ping and traceroute
      ICMP Redirect Messages
      ping Command
      Chapter 21.  SNMP and Syslog
      Configuring SNMP
      Configuring Syslog
      Chapter 22.  Basic Troubleshooting
      Viewing the Routing Table
      Determining the Gateway of Last Resort
      Determining the Last Routing Update
      OSI Layer 3 Testing
      OSI Layer 7 Testing
      Interpreting the show interface Command
      Clearing Interface Counters
      Using CDP to Troubleshoot
      traceroute Command
      show controllers Command
      debug Commands
      Using Timestamps
      OS IP Verification Commands
      ip http server Command
      netstat Command
    Part VII:  Managing IP Services
      Chapter 23.  NAT
      Configuring Dynamic NAT: One Private to One Public Address Translation
      Configuring PAT: Many Private to One Public Address Translation
      Configuring Static NAT: One Private to One Permanent Public Address Translation
      Verifying NAT and PAT Configuration
      Troubleshooting NAT and PAT Configuration
      Configuration Example: Port Address Translation
      Chapter 24.  DHCP
      Configuring DHCP
      Verifying and Troubleshooting DHCP Configuration
      Configuring a DHCP Helper Address
      Configuration Example: DHCP
    Part VIII:  Wide-Area Networks
      Chapter 25.  HDLC and PPP
      Configuring HDLC Encapsulation on a Serial Line
      Configuring PPP on a Serial Line (Mandatory Commands)
      Configuring PPP on a Serial Line (Optional Commands): Compression
      Configuring PPP on a Serial Line (Optional Commands): Link Quality
      Configuring PPP on a Serial Line (Optional Commands): Multilink
      Configuring PPP on a Serial Line (Optional Commands): Authentication
      Verifying or Troubleshooting a Serial Link/PPP Encapsulation
      Configuration Example: PPP
      Chapter 26.  ISDN and DDR
      Configuring ISDN BRI: Setting the Switch Type
      Configuring ISDN BRI: Setting SPIDs
      Configuring ISDN PRI
      Verifying ISDN Configuration
      Troubleshooting ISDN
      Configuring Legacy DDR
      Configuring Dialer Profiles with DDR
      Configuration Example: ISDN and DDR with No Dialer Profiles
      Chapter 27.  Frame Relay
      Configuring Frame Relay: Setting the Frame Relay Encapsulation Type
      Configuring Frame Relay: Setting the Frame Relay Encapsulation LMI Type
      Configuring Frame Relay: Setting the Frame Relay DLCI Number
      Configuring a Frame Relay Map
      Configuring a Description of the Interface (Optional)
      Configuring Frame Relay Using Subinterfaces
      Verifying Frame Relay
      Troubleshooting Frame Relay
      Configuration Example: Frame Relay
    Part IX:  Network Security
      Chapter 28.  IP Access Control List Security
      Access List Numbers
      ACL Keywords
      Creating Standard ACLs
      Applying a Standard ACL to an Interface
      Verifying ACLs
      Removing an ACL
      Creating Extended ACLs
      The established Keyword
      Creating Named ACLs
      Using Sequence Numbers in Named ACLs
      Removing Specific Lines in a Named ACL Using Sequence Numbers
      Sequence Number Tips
      Including Comments About Entries in ACLs
      Applying an Extended ACL to an Interface
      Restricting Virtual Terminal Access
      Configuration Example: Access Control Lists
    Part X:  Appendixes
      Appendix A.  Complete Configuration Example
      Appendix B.  Binary/Hex/Decimal Conversion Chart
      Appendix C.  Create Your Own Journal Here