Cisco IOS Command Line InterfaceHonolulu Community CollegeCisco Academy Training CenterSemester 2Version 2.1

Overview 1. This chapter introduces the Cisco IOS,

software user interface for the router. 2. Covers:

Logging in and logging out. User-mode - to check router status. Privileged mode -access to config mode. Help features. Editing features.

Logging in Initially connect thru console port on router. AUX port is for modem connection. After logging, get a user-mode prompt, >. User-mode give limited set of commands. ENABLE command.

privileged-mode - full set of commands. Prompt is the pound sign, #.

EXIT to log out of the router. DISABLE to go back to user mode.

User-Mode Commands ? To display list of commands.

User-Mode Commands Spacebar or Return at “More” prompt

Privileged-Mode Privileged-mode gives full command set. Used to go into global configuration mode.

From the privileged prompt, #, the ? will give a list of available commands.

Help Functions At any point in entering a command, the ? will

give the options for the next part of the command.

Editing Commands

Command History The user interface provides a history or record

of commands you have entered. Default is last 10 commands saved. Terminal history size can change this to up to

256. Use up arrow and down arrow to retrieve

commands.

Summary Two primary modes in Cisco IOS.

User-mode: limited checks on configuration status.

Privileged-mode: detailed examination of router configuration, remote access, debugging, access to configuration mode.

Help functions (?), and editing (command history) are useful when making changes to router configuration.