There are two ways you can configure local usernames without a password:

• By using the username user command without the password option, you create a username that has a blank password (the operator has to press ENTER at the Password: prompt)
• With the username user nopassword command, you create a user where the operator will not be prompted for the password at all.

Hopefully, you would use such usernames only with the autocommand option to give guest users a short overview of the router's operation (for example, display the interface status).

Note: this article is part of You've asked for it series.