Appendix A Cisco IOS Software Basic Skills

Understanding Command Modes

Table A-2

Command Modes Summary

 

 

 

 

 

 

 

 

 

Mode

Access Method

Prompt

Exit and Entrance Method

About This Mode

 

 

 

 

 

User EXEC

Begin a session with

Router>

To exit a router session, enter

Use this mode for these tasks:

 

your router.

 

the logout command.

Change terminal settings.

 

 

 

 

 

 

 

 

 

 

Perform basic tests.

 

 

 

 

 

Display system information.

 

 

 

 

 

 

Privileged

Enter the enable

Router#

To exit to user EXEC

Use this mode for these tasks:

EXEC

command from user

 

 

mode, enter the disable

Configure your router

 

EXEC mode.

 

 

command.

 

 

 

 

operating parameters.

 

 

 

 

 

 

 

 

 

To enter global

Perform the verification steps

 

 

 

 

configuration mode,

 

 

 

 

 

shown in this guide.

 

 

 

 

enter the configure

 

 

 

 

 

To prevent unauthorized changes

 

 

 

 

command.

 

 

 

 

 

to your router configuration,

 

 

 

 

 

access to this mode should be

 

 

 

 

 

protected with a password as

 

 

 

 

 

described in “Enable Secret

 

 

 

 

 

Passwords and Enable Passwords”

 

 

 

 

 

later in this chapter.

 

 

 

 

 

 

Global

Enter the configure

Router

To exit to privileged

Use this mode to configure

configuration

command from

(config)#

 

EXEC mode, enter the

parameters that apply to your

 

privileged EXEC

 

 

exit or end command, or

router as a whole.

 

mode.

 

 

press Ctrl-Z.

Also, you can access the following

 

 

 

 

 

 

 

 

To enter interface

modes, which are described later in

 

 

 

 

configuration mode,

this table:

 

 

 

 

enter the interface

Interface configuration

 

 

 

 

command.

 

 

 

 

Router configuration

 

 

 

 

 

 

 

 

 

 

Line configuration

 

 

 

 

 

 

Interface

Enter the interface

Router

To exit to global

Use this mode to configure

configuration

command (with a

(config-if)#

 

configuration mode,

parameters for the router Ethernet

 

specific interface, such

 

 

enter the exit command.

and serial interfaces or

 

as interface atm 0)

 

To exit to privileged

subinterfaces.

 

from global

 

 

 

 

 

 

EXEC mode, enter the

 

 

 

configuration mode.

 

 

 

 

 

 

 

end command, or press

 

 

 

 

 

 

 

 

 

 

 

 

Ctrl-Z.

 

 

 

 

 

To enter subinterface

 

 

 

 

 

 

configuration mode,

 

 

 

 

 

 

specify a subinterface

 

 

 

 

 

 

with the interface

 

 

 

 

 

 

command.

 

 

 

 

 

 

 

 

 

Cisco Secure Router 520 Series Software Configuration Guide

 

OL-14210-01

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Cisco Systems 520 series manual As interface atm, Ctrl-Z