6.1 Abnormal ONU Status in GPON Upstream
Transmission
This section describes what to do if an optical network unit (ONU) is abnormal when the
MA5612 uses a gigabit-capable passive optical network (GPON) port for upstream transmission.
An ONU can be an optical network terminal (ONT) or a multi dwelling unit (MDU). In this
document, the MA5612 is considered an ONU.
6.1.1 GPON ONU Registration Failure
The ONU registration failure is a fault in which the values of
Run state
,
Config state
, and
Match state
of an ONU are abnormal as queried by running the
display ont info
command on
the OLT.
l
The ONU running status refers to the current running status of the ONU. It indicates whether
the ONU is online and whether the ONU can carry service. The ONU status is classified
into three types: ONU Run state, ONU Config state, and ONU Match state.
–
If the ONU running status is offline, the OLT cannot issue any command to the ONU.
–
If the ONU running status is online. In this case, whether the service can be forwarded
is determined by the ONU configuration status.
l
The ONU configuration status indicates whether the configuration restoration is enabled
and whether the configuration restoration is complete. The ONU configuration status has
the following states: initial, normal, configuring (config), and configuration failure (failed).
When an ONU goes online, the ONU is in the configuration restoration stage.
–
The first status is initial. Soon the initial is complete and the ONU enters the config
state.
–
In the config state, the ONU capability and configuration data are restored. The duration
of the config state is determined by the amount of the data configured on the ONU.
–
If the configuration restoration is successful, the ONU transitions from the config state
to the normal state.
–
If the configuration restoration fails, the ONU transits from the config state to the failed
state and the service cannot be carried forward.
l
The ONU matching status indicates whether the actual ONU capability is the same as the
service profile bound to the ONU. The status includes: initial, mismatch, and match. To
some extent, the matching status is determined by the ONU running status and configuration
status.
–
The matching status of the ONU can be queried only when the ONU running status is
online and the configuration status is normal. The matching status is match when the
hardware capability is the same as the ONU service profile bound with the ONU.
Otherwise, the status is mismatch.
–
In other configuration states, the matching status is initial.
–
The ONU matching status does not affect the normal forwarding of the service flow,
and only indicates whether the actual ONU capability is the same as the service profile
bound to the ONU.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide
6 System Fault Handling
Issue 01 (2012-07-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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