很简单,通过console进去
Restoring Passwords
Before You Begin
Ensure that you are accessing the controller CLI through the console port.
Procedure
Step 1 After the controller boots up, enter Restore-Password at the User prompt.
Note For security reasons, the text that you enter does not appear on the controller console.
Step 2 At the Enter User Name prompt, enter a new username.
Step 3 At the Enter Password prompt, enter a new password.
Step 4 At the Re-enter Password prompt, reenter the new password. The controller validates and stores your entries
in the database.
Step 5 When the User prompt reappears, enter your new username.
Step 6 When the Password prompt appears, enter your new password. The controller logs you in with your new
username and password.