User Manual
UMN:CLI
V5824G
525
To modify an existing ONU profile, use the following command.
Command
Mode
Description
onu-profile
NAME
modify
GPON
Modifies an ONU profile.
NAME: ONU profile name
To delete a created ONU profile, use the following command.
Command
Mode
Description
no onu-profile
{
NAME
|
all
}
GPON
Deletes an ONU profile.
NAME: ONU profile name
11.3.2
Configuring ONU Profile
11.3.2.1
RX Optical Power Threshold
The ONUs periodically monitor the RX optical power and send the alarm message to their
OLT when the RX optical power exceeds the user-defined threshold. To set the transmit
rate of an UNI port, use the following command.
Command
Mode
Description
rx-power
threshold
{
low
VALUE
[
high
VALUE
]
|
high
VALUE
[
low
VALUE
] }
ONU-Profile
Sets the RX optical power threshold and sends RX
power high/low alarm to OLT when the RX power
exceeds the threshold or it is below the threshold.
VALUE: -127 to 0 dBm
no rx-power
threshold
[
low
|
high
]
Deletes the configured RX optical power threshold.
11.3.2.2
Rogue ONU
The first method is that after detecting the existence of a rogue ONT, the rouge ONT is
identified and isolated from the service by the OLT.
GPON OLT allocates the time slot for each ONU to transmit upstream traffic similarly to
the TDM method. The allocated time is announced by the bandwidth map that is
contained in the downstream GEM frame and the ONT only transmits the traffic based on
the allocated bandwidth map. Due to this nature of GPON technology, the wrong transmit
time of the ONT makes collision in upstream direction. This can be resulted from
continuous transmitting data of the malfunctioned ONT which is called
“Rogue ONT”.
The polling interval attribute represents the interval of polling optical transceiver at the
ONT. And the polling count for rogue ONT attribute represents the number of consecutive
polling, which results in abnormality, for declaring the optical transceiver as abnormal.
