CISCO IOS in a Nutshell

Name

username — global

Synopsis

username name [nopassword | password password] [access-class access-list-number] [autocommand command] [callback-dialstring phone-number] 
    [callback-rotary rotary-group-number] [callback-line [tty] line-number 
    [ending-line-number]] [nocallback-verify] [noescape] [nohangup]

Configures

Username information for authentication

Default

None

Description

The username command provides authentication information for a user. It is used to build a username database on the router itself (as opposed to on an external server, like a RADIUS server). Many different types of information can be provided, using the following options:

nopassword

No password is required for the user; this option is useful when combined with autocommand.

password password

Specifies a password for the user.

access-class access-list-number

Specifies an outgoing access list for the user, overriding the access list specified in the access-class command in the line configuration.

autocommand command

Causes the specified command to be issued automatically when the user connects. This is commonly used to start PPP sessions.

callback-dialstring phone-number

Specifies the phone number to pass to the modem for asynchronous callback.

callback-rotary rotary-group-number

Specifies the rotary group to use for asynchronous callback.

callback-line tty line-number ending-line-number

Specifies which lines can be used for asynchronous callback. The optional tty keyword restricts the callback to TTY lines.

nocallback-verify ...