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CCNA Portable Command Guide By Scott Empson

CCNA Portable Command Guide by Scott Empson

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Helps you memorize commands and concepts as you work to pass the CCNA exam (INTRO 640-821, ICND 640-811, or CCNA 640-801). This work covers CCNA topic areas such as TCP/IP; an Introduction to Cisco Devices; configuring a Router; Routing; Switches; Network Administration and Troubleshooting; Managing IP Services; WANs; and, Network Security.

CCNA Portable Command Guide Summary

CCNA Portable Command Guide by Scott Empson

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

  • 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
  • "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 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 (R) 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 (R) that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press.

About Scott Empson

Scott Empson is an instructor in the telecommunications department at the Northern Alberta Institute of Technology in Edmonton, Alberta, Canada, teaching Cisco (R) routing, switching, and network design courses in certificate, diploma, and applied degree programs at the post-secondary level. He is also the program coordinator of the Cisco Networking Academy (R) Program at NAIT, a Regional Academy covering Central and Northern Alberta. He has earned three undergraduate degrees and currently holds several industry certifications, including CCNP (R), CCDA (R), CCAI, and Network+.

Table of Contents



Chapter 1 How to Subnet

Class A-E Addresses

Converting Between Decimal Numbers and Binary

Subnetting a Class C Network Using Binary

Subnetting a Class B Network Using Binary

Binary ANDing

Question 1


Question 2


So Why AND?

Shortcuts in Binary ANDing

The Enhanced Bob Maneuver for Subnetting

Chapter 2 VLSM

IP Subnet Zero

VLSM Example

Step 1 Determine How Many H Bits Will Be Needed to

Satisfy the Largest Network

Step 2 Pick a Subnet for the Largest Network to Use

Step 3 Pick the Next Largest Network to Work With

Step 4 Pick the Third Largest Network to Work With

Step 5 Determine Network Numbers for Serial Links

Chapter 3 Route Summarization

Example for Understanding Route Summarization

Step 1: Summarize Winnipeg's Routes

Step 2: Summarize Calgary's Routes

Step 3: Summarize Edmonton's Routes

Step 4: Summarize Vancouver's Routes

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 44 exit Command 44 disable Command 45 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

The permanent Keyword (Optional)

Static Routes and Administrative Distance (Optional)

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


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

Spanning-Tree Verification

Change Spanning-Tree Priority of a Switch

Changing the Cost of Spanning Tree on an Interface

Changing the State of Spanning Tree on an Interface

Spanning Tree Portfast BPDU Guard Command


EtherChannel Configuration

Verification of EtherChannel

EtherChannel Tips

Chapter 14 VLANs

Displaying VLAN Information

Creating Static VLANs

Assigning Ports to VLANs

Assigning Ports Using the range Command (2950 Switch


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


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

The Configuration Register: A Visual Representation

The Configuration Register-What the Bits Mean

The Boot Field

Console Terminal Baud Rate Settings

Changing the Console Line Speed-CLI

Changing the Console Line Speed-ROM Monitor

Mode-1700/2600 Series

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


Configuring PAT: Many Private to One Public Address


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


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


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


Additional information

CCNA Portable Command Guide by Scott Empson
Used - Good
Pearson Education (US)
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This is a used book - there is no escaping the fact it has been read by someone else and it will show signs of wear and previous use. Overall we expect it to be in very good condition, but if you are not entirely satisfied please get in touch with us

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