The OPWR- HDEG alarm is raised on the 80-WXC-C ports when the optical power level exceeds the saturation
limit of the OCM. The OCM saturation is caused by a power level that is outside the set power range of the
OCM. The OCM power range is tuned using the LOS or OPWR-LFAIL threshold values associated with the
80-WXC-C port. The saturation level is +30dBm.
The OPWR-HDEG alarm may be raised on the WSS pass through ports of a ROADM configuration when
the attenuation is increased at the span level.
Note
Clear the OPWR-HDEG Alarm
SUMMARY STEPS
1.
Verify fiber continuity to the port by following site practices. Refer to the Network Reference chapter
of the Configuration guide for a procedure to detect a fiber cut.
2.
If the cabling is good, confirm that the LED is correctly illuminated on the physical card. A green
ACT/SBY LED indicates an active card. A red ACT/SBY LED indicates a failed card.
3.
Verify that the power read by photodiode on the port is within the expected range as projected by Cisco
TransportPlanner. The application generates a spreadsheet of values containing this information.
4.
If the optical power level is within specifications, check the opwrMin threshold. (These are listed in the
Configuration guide.) Refer to the
Cisco Transport Planner DWDM Operations Guide
and decide what
value to use for modifying the power level:
5.
If the received optical power level is within specifications, refer to the
Cisco Transport Planner DWDM
Operations Guide
to determine the correct levels and check the opwrMin threshold. (These are listed
in the Configuration guide.) If necessary, modify the value as required.
6.
If the optical power is outside of the expected range, verify that all involved optical signal sources,
namely the TXP or MXP trunk port or an ITU-T line card, are in IS administrative state by clicking the
correct tab:
7.
If the port is in IS (or Unlocked) state but its output power is outside of the specifications, complete the
Clear the LOS-P (OCH) Alarm, on page 284
procedure. (These specifications are listed in the
Configuration guide.)
8.
If the signal source is IS and within expected range, come back to the unit reporting OPWR-HDEG and
clean all connected fiber in the same line direction as the reported alarm according to site practice. If
no site practice exists, complete the procedure in the Maintain the Node chapter of the Configuration
guide.
9.
Repeat Steps
to
for any other port on the card reporting the
OPWR-HDEG alarm.
10.
If the optical power is outside of the expected range for the 80-WXC-C card, check the power level
coming from the another card port that is connected to the alarmed 80-WXC-C port and verify if a bulk
attenuator was installed as provisioned by CTP.
11.
If the OCM power range is incorrect for the 80-WXC-C card, verify if the Channel LOS Threshold
parameter associated with the failing port and wavelength was imported correctly from CTP to CTC
using the NE update file and if the parameter was applied to the card ports using the Launch ANS
function.
12.
If the alarm does not clear, look for and troubleshoot any other alarm that could identify the source of
the problem.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
323
Alarm Troubleshooting
Clear the OPWR-HDEG Alarm
