Cisco NCS 2000 series Troubleshooting Manual page 136

Condition B2 - OPWR-LowDEGrade Alarm
Note
b) Verify that the power value coming out of DROP_TX port of the coupled 32DMX-O or 40DMX card is correct:
• In card view, click the Provisioning > Optical Chn: > Parameters tabs.
• The Power field value must be the same as that in the VOA Power Ref field. If it is not, take the appropriate
corrective action for the alarm according to
c) Check and clean the LC fiber fan-out according to site practice. The fiber numbers (1 to 8) must correspond to the
wavelength managed.
d) Repeat Step
32DMX-O or 40DMX card.
e) Check and, if necessary, clean the LC-LC adapter.
f) If necessary, replace and bad devices (maximum tolerance is 1 dB).
Note
Warning
g) If the alarm condition persists even after the cabling is checked or fixed, replace the 32MUX-O or 40MUX card
(refer to the Upgrade, Add, and Remove Cards and Nodes chapter of the Configuration Guide. Before replacing
the card, log into the Technical Support Website at http://www.cisco.com/techsupport for more information or call
Cisco TAC (1 800 553-2447) in order to report a service-affecting problem).
Condition B2 - OPWR-LowDEGrade Alarm
SUMMARY STEPS
1. Verify the alarm validity:
2.
3.
4. Verify the correct behavior of the TXP, MXP, or line card that is the signal source of the channel
(wavelength) that is alarmed:
5. If the cards referenced in Step 3 and Step 4 are operating properly, go to Step 6. If not, take the appropriate
corrective actions according to the alarm raised on the card (see
6. If the alarmed card is a 32MUX-O or 40MUX card, go to Step 8.
7. If the alarmed card is a 32WSS or 40WSS-C card, verify the proper cabling of the EXP_RX port (common
input port for all pass-through channels) on the WSS card:
8. Verify the proper cabling of the alarmed ADD_RX port on the 32MUX-O or 40MUX card:
DETAILED STEPS
Step 1
Verify the alarm validity:
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
90
A patch-panel tray is normally used to manage fiber connections (for patch-panel cabling details, refer
to the Turn Up a Node chapter in the Configuration Guide).
10.e, on page 90 for the MPO-LC multifiber cable coming out of the DROP_TX port of the coupled
If no site practice exists for cleaning fibers, complete the procedure in the Maintain the Node chapter of
the Configuration Guide.
High-performance devices on this card can get hot during operation. To remove the card, hold it
by the faceplate and bottom edge. Allow the card to cool before touching any other part of it or
before placing it in an antistatic bag. Statement 201
Alarm Troubleshooting, on page 99
Alarm Troubleshooting, on page
General Troubleshooting
99).