Hi, friend,
You need to find where is the protect link connect
huawei(diagnose)%%display ont register-info gmac 0/3/0
{ <cr>||<K> }:
Command:
display ont register-info gmac 0/3/0
------------------------------------------------------------------------------
Index Time SN ONT-ID Status Cause
huawei(config-if-gpon-0/3)#display port ont-register-info
{ all<K>|portid<U><0,3> }:all
Command:
display port ont-register-info all
-------------------------------------------------------------------------------
F/S/P: 0/3/0
Find the same SN number and authentication failed port, can confirm the ONT connect to this port.
Thanks!