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CCNA Command Quick Reference (Cisco Networking Academy Program) [Paperback]

Scott Empson
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Table of Contents

Introduction

Part I    CCNA 1

Part II   CCNA 2

Chapter 1         WANs and Routers

Connecting a Rollover Cable to Your Router or Switch

Terminal Settings

LAN Connections

Serial Cable Types

Which Cable to Use?

OS IP Verification Commands

Chapter 2         Introduction to Routers

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

Chapter 3         Configuring a 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 a 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

Chapter 4         Learning About Other Devices

Cisco Discovery Protocol

Telnet

ping

traceroute

Chapter 5         Managing Cisco IOS Software

Boot System Commands

Configuration Register

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

Password Recovery Procedures

Chapter 6         Routing and Routing Protocols

Static Routing

Default Routing

Verifying Static Routes

Configuration Example: Static Routes

Chapter 7         Distance Vector Routing Protocols

IP Classless

RIP Routing: Mandatory Commands

RIP Routing: Optional Commands

RIP Version 2

Troubleshooting RIP Issues

IGRP Routing: Mandatory Commands

IGRP Routing: Optional Commands

Troubleshooting IGRP Issues

Dynamic Routing Protocol Options


Troubleshooting Dynamic Routing Protocol Issues

Verifying Routing

Configuration Example: Dynamic Routing

Chapter 8         TCP/IP Suite Error and Control Messages

ICMP Redirect Messages

ping Command

Chapter 9         Basic Router Troubleshooting

Viewing the Routing Table

Determining the Gateway of Last Resort

Determining the Last Routing Update

OSI Layer 3 Testing

OSI Layer 7 Testing

Using CDP to Troubleshoot

traceroute Command

show controllers Command

debug Commands

Chapter 10       Intermediate TCP/IP

ip http server Command

netstat Command

Chapter 11       Access Control Lists (ACLs)

Access List Numbers

Wildcard Masks

ACL Keywords

Creating Standard ACLs

Applying a Standard ACL to an Interface

Verifying ACLs

Removing An ACL

Creating Extended ACLs

Applying an Extended ACL to an Interface

Creating Named ACLs

Restricting Virtual Terminal Access

Configuration Example: Access Control Lists

Configuration Example: CCNA 2

Part III  CCNA 3

Chapter 1         Introduction to Classless Routing

Variable-Length Subnet Masking (VLSM)

Subnet Zero

RIP Version 2: Mandatory Commands


RIP Version 2: Optional Commands

Configuration Example: RIP-2 Routing

Chapter 2         Single-Area OSPF

OSPF Routing: Mandatory Commands

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

Chapter 3         EIGRP

Configuring EIGRP

EIGRP Auto Summarization

Verifying EIGRP

Troubleshooting EIGRP

Configuration Example: EIGRP

Chapter 4         Switching Concepts

Chapter 5         Switches

Chapter 6         Switch Configuration

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

Upgrading Catalyst 1900 Firmware with a TFTP Server

Copying IOS to TFTP Server

Restoring/Upgrading IOS/Startup-Config from TFTP Server

Password Recovery for 1900 Series Switches

Password Recovery for 2900/2950 Series Switches

Firmware Upgrade of Catalyst 2950 Series Switches

Configuration Example: 2900 Series Switch

Chapter 7         Spanning Tree Protocol

Spanning-Tree Verification

Change Spanning-Tree Priority of a Switch

Changing the Stage of Spanning Tree on an Interface

Chapter 8         Virtual LANs

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 9         VLAN Trunking Protocol

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 IV CCNA 4

Chapter 1         Scaling IP Technologies

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

Configuring DHCP

Verifying and Troubleshooting DHCP Configuration

Configuring a DHCP Helper Address

Configuration Example: Port Address Translation

Chapter 2         WAN Technologies

Chapter 3         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 4         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 5         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

Chapter 6         Introduction to Network Administration

Configuring SNMP

Configuring Syslog

Part V  Appendixes

Appendix A      Subnetting

Class A–E Addresses

Converting Between Decimal Numbers and Binary

Subnetting a Class C Network Using Binary

Subnetting a Class B Network Using Binary

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