Cisco Systems IE 2000 Using the Command-Line Interface

CHAPTE R
2-1
Cisco IE 2000 Switch Software Configuration Guide
OL-25866-01
2
Using the Command-Line Interface
Information About Using the Command-Line Interface
This chapter describes the Cisco IOS command-line interfa ce (CLI) and how to use it to configure your
switch.
Command Modes
The Cisco IOS user interface is divided into many different modes. The commands available to you
depend on which mode you are currently in. Enter a question mark (?) at the system prompt to obtain a
list of commands available for each command mode.
When you start a session on the switch, you begin in user mode, often called user EXEC mode. Only a
limited subset of the commands are available in user EXEC mode. For exam ple, most of the user EXEC
commands are one-time commands, such as show commands, which show the current configuration
status, and clear commands, which clear counters or inte rfaces. The user EXEC commands are not saved
when the switch reboots.
To have access to all commands, you must enter privileged EXEC mode. You must enter a password to
enter privileged EXEC mode. From this mode, you can enter any p rivileged EXEC command or enter
global configuration mode.
Using the configuration modes (global, interface, and line), y ou can make changes to the running
configuration. If you save the configuration, these commands are stored and used when the switch
reboots. To access the various configuration modes, you must start at global configuration mode. From
global configuration mode, you can enter interface configuration mode and line configuration mode .