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Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.13.2 VOA Failure Scenarios
Figure 1-33 LOS-P Indication on the VOA Port
Use the following procedure to troubleshoot and eventually fix issues related to the VOA start-up when
the optical power level of the incoming signal is lower than the minimum allowed by the MSTP
supported optical interfaces (32MUX-O and 32WSS cards).
Step 1 Verify the alarm validity:
a. Identify the DWDM nodes where the alarmed card is seated.
b. Double-click the card (either the 32MUX-O or the 32WSS card).
c. Click Alarms.
d. Verify that a LOS-P alarm is present on the ADD-RX port.
e. Click the Synchronize button in the bottom left of the window.
f. If the alarm is correctly reported, move to Step 2. If not, close the CTC application, delete the CTC
cache, and open the CTC connection again.
Note If the alarm inconsistency persists, 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.