Cisco NCS 2000 series Troubleshooting Manual page 327

Alarm Troubleshooting
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DETAILED STEPS
Step 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.
Step 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.
Step 3
Display the optical thresholds by clicking one of the following tabs:
• For the OPT-BST, OPT-AMP-C, or OPT-AMP-17-C cards, click the Provisioning > Opt. Ampli. Line > Optics
Thresholds tabs and click the Alarm checkbox in the Type panel.
• For the OSC-CSM cards, click the Provisioning > Optical Line > Optics Thresholds tabs.
• For the 40-SMR1-C and 40-SMR2-C cards, click the Provisioning > Optical Line > Optics Thresholds tabs.
Step 4 Verify that OSC Fail Low thresholds are correct according with Cisco TransportPlanner configuration file. To identify
the MP value:
a) In node view (single-shelf mode) or shelf view (multishelf mode), click the Provisioning > WDM-ANS >
Provisioning tabs.
b) Identify the following parameter: east or west side Rx channel OSC LOS threshold.
Step 5 If the port power is below the threshold, verify that OSC connections have been created on the other side of the span.
If the connections are not present, refer to the Configuration guide for procedures.
Step 6 If OSC connections are present, check the OSC transmitted power using CTC on the far-end node. Refer to the Turn
Up Node chapter of the Configuration guide for the proper procedure.
Step 7 If the transmitted OSC value is out of range, troubleshoot that problem first.
Step 8
If the OSC value is within range, come back to the port reporting the LOS-O alarm and clean the fiber according to
site practice. If no site practice exists, complete the fiber-cleaning procedure in the Maintain the Node chapter of the
Configuration guide.
Step 9 If the alarm does not clear, look for and troubleshoot any other alarm that could identify the source of the problem.
Step 10 If no other alarms exist that could be the source of the LOS-O, place all of the card ports in OOS,DSBLD (or
Locked,disabled) administrative state.
Step 11 Complete the
If OSC connections are present, check the OSC transmitted power using CTC on the far-end node. Refer
to the Turn Up Node chapter of the Configuration guide for the proper procedure.
If the transmitted OSC value is out of range, troubleshoot that problem first.
If the OSC value is within range, come back to the port reporting the LOS-O alarm and clean the fiber
according to site practice. If no site practice exists, complete the fiber-cleaning procedure in the Maintain
the Node chapter of the Configuration guide.
If the alarm does not clear, look for and troubleshoot any other alarm that could identify the source of
the problem.
If no other alarms exist that could be the source of the LOS-O, place all of the card ports in OOS,DSBLD
(or Locked,disabled) administrative state.
Complete the Physically Replace a Card, on page 453
Physically Replace a Card, on page 453
procedure for the reporting card.
procedure for the reporting card.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
Clear the LOS-O Alarm
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