Login problems may occur when the user name or password is incorrectly entered at login. If the default user name and password fail, the initial values may have been changed by an administrator-level user. You need the designated user name and password to log in to an NAE . If the passwords for all NAE users are forgotten, you need to reimage the network engine, which is similar to the factory reset of a smartphone.
Whenever you change the Security System database for a small-capacity network engine with Release 8.0 or later (NxE35, NxE45, or NxE25), you must issue the Reset Device command to ensure that the security database is archived to non-volatile memory. This step is not required for large-capacity engines (NxE55s). If you do not perform this step for a network engine that has a poor or dead battery, and that engine loses power, the latest changes to the Security System database are lost.
As a last resort, you can also reload the NAE with the NAE/NIE Update Tool, but that process deletes the archive database. For details, refer to the NAE Update Tool Help (LIT-12011524) .