Table 5-1
Fault Location and Possible Cause
Fault Type
Possible Cause
ONT Registration Failure
l
The optical port on the ONT is abnormal.
l
The fiber connected to the ONT is faulty.
l
The optical power of the ONT is not within the
normal range.
l
The ONT does not exist.
l
The maximum logic distance configured for the
OLT port is inconsistent with the actual distance.
l
The automatically finding function is disabled on
the OLT port.
l
When the ONT is added, the configured SN is
inconsistent with the actual MAC address of the
ONT.
l
An ONT with the same SN is already connected to
the OLT.
Failed to access the Internet
l
The subscriber terminal or the subscriber loop is
faulty.
l
The PON port is faulty.
l
The data configuration of the upper-layer device is
incorrect.
l
The PON board is faulty.
l
The optical path is faulty.
l
The control board or the uplink interface board is
faulty.
l
There are network attacks.
l
Check whether the PC route conflict exists.
l
Check whether the WAN port obtains the address
successfully.
l
Check whether the IP address segment obtained by
the PC is correct.
l
Check whether the ONT WAN port and the ONT
address can be successfully pinged.
l
Check whether the WAN MAC of ONT MAC
address is all Fs.
l
The NAT conversion function for the bound WAN
port is not enabled.
l
The LAN port is a L2 port, but the PC does not obtain
the public network address.
EchoLife HG861 GPON Terminal
5 Troubleshooting
Issue 01 (2009-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5-3
