This accessible-for-notify enumerated value reports why a login attempt failed authentication: exceedRetries(1), authTimeout(2), or otherReason(3), and is only populated as a varbind in the hpnicfLogInAuthenFailure trap. An admin uses this to distinguish a user who simply mistyped a password too many times from one whose session timed out during authentication, which matters when investigating possible brute-force attempts versus network issues. For example, repeated hpnicfLogInAuthenFailure traps all carrying exceedRetries(1) for the same terminal source would suggest a brute-force login attempt worth investigating.