The password has expired, so the local account becomes invalid S5700
Check the following links:
http://support.huawei.com/onlinetoolsweb/einfofinder/Log?module=4&language=en
http://support.huawei.com/hedex/pages/EDOC1000177841AEG11278/04/EDOC1000177841AEG11278/04/resources/dc/AAA_LOG_LOCAL_PASSWORD_EXPIRED.html?ft=99&id=


