Olt Optical Transceiver Parameter; Auto Onu Fault Detection - Furukawa LW3008C User Manual

11.1.3

OLT Optical Transceiver Parameter

To set an optical transceiver parameter, use the following command.
Command
olt optic-param default
olt optic-param user1
To display the status of OLT's optic module parameter, use the following command.
Command
show olt optic-param [OLT-ID]
11.1.4

Auto ONU Fault Detection

If a certain ONU's laser is enabled consistently by an optical module's fault, all other normal
ONUs connected to the same OLT will be deregistered; a single ONU fault may cause a
whole network disruption. Preventing such a problem, the LW3008C provides the auto ONU
(ONT) fault detection feature. Normally, if an ONU (ONT) fault occurs, a specific error signal
is followed by the fault. Thus, the LW3008C validates whether an ONU (ONT) fault occurs by
detecting the specific error signal. The auto ONU fault detecting mechanism is as follows:
When detecting an error signal (an ONU fault) in a certain OLT, the LW3008C generates a
corresponding syslog message, and then disables the laser of each ONU currently
connected to the OLT one by one for 60 seconds. At the moment that the faulty ONU's laser
is disabled, the error signal also disappears, then the system realizes that which the faulty
ONU is and memorizes its serial number. After 60 seconds, when the disconnected ONUs
(ONTs) start to enable their laser, if the ONU having the same serial number memorized
before tries to enable its laser, the LW3008C disables the laser permanently. To resume the
laser, the ONU needs a power reset.
To enable/disable the auto ONU fault detection, use the following command.
Command
olt signal-check {enable |
disable}
olt signal-check auto-onu-block
{enable | disable}
To display a current configuration of the auto ONU fault detection, use the following command.
Mode
Set a default optic module parameter.
GPON-OLT
Set an user1 optic module parameter.
Mode
GPON
Shows the status of OLT's optic module parameter.
GPON-OLT
Mode
Enables/disables the auto ONU (ONT) fault detection.
(When an ONU fault occurs, the system will only
generate the syslog message.)
GPON-OLT
Enables/disables the auto ONU (ONT) fault detection.
(When an ONU fault occurs, the system will disable the
ONU's laser permanently.)
Description
Description
Description
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