User-based lockout compliance

NOTE:

User-based lockout is available only on switches running KB software.

When a specified number of unsuccessful authentication attempts have occurred, remote users can be locked out. If the system-configured usernames (manager, operator, and local users) are not unique, the user-based lockout delay feature cannot be enabled. If lockout-delay with the user-based-lockout feature is enabled, the manager, operator, or local user creation fails for duplicate usernames. Users currently locked out are unlocked after reboot.