EasyManua.ls Logo

Cisco 2800 Series User Manual

Cisco 2800 Series
266 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #46 background imageLoading...
Page #46 background image
4
Basic Software Configuration Using the Cisco IOS Command-Line Interface
OL-5593-01
How to Perform a Basic Software Configuration Using the Cisco IOS CLI
What to Do Next
Proceed to the “Configuring the Enable and Enable Secret Passwords” section on page 4.
Configuring the Enable and Enable Secret Passwords
To provide an additional layer of security, particularly for passwords that cross the network or are stored
on a TFTP server, you can use either the enable password command or enable secret command. Both
commands accomplish the same thing—they allow you to establish an encrypted password that users
must enter to access privileged EXEC (enable) mode.
We recommend that you use the enable secret command because it uses an improved encryption
algorithm. Use the enable password command only if you boot an older image of the Cisco IOS
software or if you boot older boot ROMs that do not recognize the enable secret command.
For more information, see the “Configuring Passwords and Privileges” chapter in the Cisco IOS Security
Configuration Guide. Also see the
Improving Security on Cisco Routers tech note.
Restrictions
If you configure the enable secret command, it takes precedence over the enable password command;
the two commands cannot be in effect simultaneously.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
enable password password
4.
enable secret password
5.
end
6.
enable
7.
end
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.

Table of Contents

Other manuals for Cisco 2800 Series

Question and Answer IconNeed help?

Do you have a question about the Cisco 2800 Series and is the answer not in the manual?

Cisco 2800 Series Specifications

General IconGeneral
Power SupplyInternal power supply
Product TypeRouter
Form FactorRack-mountable
Connectivity TechnologyWired
Power DeviceInternal power supply
Operating SystemCisco IOS
Integrated ServicesSecurity, voice
WAN InterfacesT1/E1, Serial
LAN InterfacesFast Ethernet, Gigabit Ethernet
Expansion Slots4
Data Link ProtocolEthernet, Fast Ethernet, Gigabit Ethernet
Network/Transport ProtocolIP, TCP
Remote Management ProtocolSNMP, Telnet
FeaturesVPN support, Quality of Service (QoS), VLAN support
Voltage RequiredAC 100-240 V
Security FeaturesFirewall, VPN, Access Control Lists (ACLs)

Summary

Preface

Objectives

Describes the objectives of the software configuration documentation.

Audience

Identifies the intended audience for the Cisco router configuration documentation.

Conventions

Explains the conventions used to convey instructions and information in the documents.

Obtaining Documentation

Provides information on how to obtain Cisco documentation and additional literature.

Obtaining Technical Assistance

Details how to obtain technical assistance from Cisco Systems.

Overview

Cisco 2800 Series Software Configuration Documentation

Basic Software Configuration

Covers foundational steps for configuring Cisco 2800 series routers.

Performing Initial Configuration

Initial Configuration Using the Cisco Router and Security Device Manager

Details initial router configuration using the Cisco Router and Security Device Manager (SDM).

Initial Configuration Using the Setup Command Facility

Explains how to perform initial router configuration using the setup command facility.

Initial Configuration Using the Command-Line Interface

Describes how to perform initial router configuration using the Cisco IOS command-line interface (CLI).

Verifying the Initial Configuration

Basic Software Configuration Using the Setup Command Facility

Using the Setup Command Facility to Perform Basic Configuration

Details how to use the setup command facility for basic router configuration.

Examples of Using the Setup Command Facility to Configure Interface Parameters

Fast Ethernet Interface Configuration

Provides an example of configuring a Fast Ethernet interface using the setup command facility.

Gigabit Ethernet Interface Configuration

Provides an example of configuring a Gigabit Ethernet interface using the setup command facility.

ISDN BRI Provisioning by Switch Type

Defining ISDN Service Profile Identifiers

Explains how service providers assign SPIDs and how to define them on the router.

Channelized E1/T1 ISDN PRI Interface Configuration

E1/T1 PRI Mode

Provides a sample configuration for E1/T1 PRI mode.

Completing the Configuration

Basic Software Configuration Using the Cisco IOS Command-Line Interface

Prerequisites for Basic Software Configuration Using the Cisco IOS CLI

Outlines the prerequisites for performing basic software configuration using the Cisco IOS CLI.

How to Perform a Basic Software Configuration Using the Cisco IOS CLI

Provides a step-by-step guide on performing basic software configuration using the Cisco IOS CLI.

Configuring the Router Hostname

Configuring the Enable and Enable Secret Passwords

Configuring the Console Idle Privileged EXEC Timeout

Configuring Fast Ethernet and Gigabit Ethernet Interfaces

Specifying a Default Route or Gateway of Last Resort

Configuring Virtual Terminal Lines for Remote Console Access

Configuring the Auxiliary Line

Verifying Network Connectivity

Saving Your Router Configuration

Saving Backup Copies of Your Configuration and System Image

Additional References

Related Documents—Basic Software Configuration

Lists documents related to basic software configuration using the Cisco IOS CLI.

Secured Branch Router Configuration Example

Before You Begin

Outlines prerequisites and components used in the secured branch router configuration.

Configure

Section dedicated to configuring the secured branch router.

Verify

Section for commands to verify the secured branch router configuration.

Troubleshoot

Section providing information to troubleshoot the secured branch router configuration.

IP Communication Solution for Group Applications Configuration Example

Introduction

Introduces the IP communication solution for group applications configuration example.

Prerequisites

Lists the prerequisites for implementing the IP communication solution.

Components Used

Details the software and hardware components used in the IP communication solution example.

Configure

Network Diagram

Illustrates the network setup for the IP communication solution.

Configurations

Presents the configurations for the Cisco 3845 router.

Verify

show telephony-service

Shows IP telephony services available for Cisco CallManager server.

show ephone registered

Verifies IP phone registration and lists associated information.

show commands for the voice gateway

Lists commands to verify voice gateway configuration.

show commands for CE

Lists commands to verify Content Engine (CE) configuration.

show and service commands on Cisco CME for Cisco Unity Express

Lists commands to verify Cisco CME and Cisco Unity Express configuration.

Troubleshoot

Troubleshooting Reference Documents and Commands

Provides references and commands for troubleshooting Cisco CME-based Cisco Unity Express implementations.

Easy VPN Configuration Example

Introduction

Introduces the Easy VPN (EzVPN) sample configuration.

Before You Begin

Lists terms and requirements for the Easy VPN configuration example.

Components Used

Details the software and hardware versions used in the Easy VPN configuration example.

Configure

Section for configuring Easy VPN features.

Verify

Section for verifying Easy VPN configuration.

Troubleshoot

Section for troubleshooting Easy VPN configuration.

Hoot and Holler over V3PN Configuration Example

Introduction

Introduces the Hoot and Holler over V3PN configuration example for multicast voice over VPN.

Prerequisites

Lists prerequisites for understanding the Hoot and Holler over V3PN configuration.

Components Used

Details the software and hardware used in the Hoot and Holler over V3PN configuration.

Configure

Section for configuring Hoot and Holler over V3PN.

Verify

Section for verifying Hoot and Holler over V3PN configuration.

Verifying Branch 2 Router

Provides output examples for verifying the Branch 2 router configuration.

Upgrading the System Image

Restrictions for Upgrading the System Image

Outlines restrictions related to upgrading the system image.

Information About Upgrading the System Image

Provides concepts to understand before upgrading the system image.

How to Upgrade the System Image

Provides information on performing system image upgrade tasks.

Saving Backup Copies of Your Old System Image and Configuration

Recommends saving backup copies of the current system image and configuration.

Ensuring Adequate DRAM for the New System Image

Guides on checking if the router has enough DRAM for the new system image.

Ensuring Adequate Flash Memory for the New System Image

Describes how to check flash memory and delete files to make room for a new system image.

Loading the New System Image from the Cisco IOS Software

Describes how to load a new system image from the Cisco IOS software.

Loading the New System Image from ROM Monitor Mode

Explains how to load a new system image from ROM monitor mode.

Using CompactFlash Memory Cards

Requirements and Restrictions

Outlines requirements and restrictions for using CompactFlash memory cards.

Online Insertion and Removal

Describes the Online Insertion and Removal (OIR) feature for CF memory cards.

How to Format CompactFlash Memory Cards

Provides procedures for formatting CompactFlash memory cards.

File Operations on CompactFlash Memory Cards

Describes various file operations on external CF memory cards.

Deleting Files

Explains how to delete files from a CF memory card.

Directory Operations on a CompactFlash Memory Card

Details directory operations for external CF memory cards.

Creating a New Directory

Describes how to create a new directory in flash memory.

Removing a Directory

Explains how to remove a directory from flash memory.

Using the ROM Monitor

Prerequisites for Using the ROM Monitor

Outlines the prerequisites for using the ROM monitor.

Information About the ROM Monitor

Provides concepts to understand before using the ROM monitor.

Tips for Using ROM Monitor Commands

Provides tips for using ROM monitor commands effectively.

How to Use the ROM Monitor—Typical Tasks

Provides procedures for common ROM monitor tasks.

Entering ROM Monitor Mode

Details two methods for entering ROM monitor mode.

Setting the Configuration Register to Boot to ROM Monitor Mode

Describes how to set the configuration register to boot into ROM monitor mode.

Displaying Commands and Command Syntax in ROM Monitor Mode (?, help, -?)

Explains how to display ROM monitor commands and syntax options.

Loading a System Image (boot)

Describes how to load a system image using the boot ROM monitor command.

Downloading Files over the Router Console Port (xmodem)

Explains how to download files over the console port using the Xmodem Protocol.

Modifying the Configuration Register (confreg)

Describes how to modify the configuration register using the confreg ROM monitor command.

Recovering the System Image (tftpdnld)

Details how to download a Cisco IOS software image from a remote TFTP server using tftpdnld.

Troubleshooting Links

Password Recovery Procedures

Provides access to procedures for recovering lost passwords.

Troubleshooting Router Crashes

Offers resources for troubleshooting router crashes.

Troubleshooting Router Hangs

Provides resources for troubleshooting router hangs.

Technical Assistance Center (TAC) Website

Provides a link to the Cisco Technical Assistance Center (TAC) website.

Related product manuals