Cisco NCS 1002 Troubleshooting Manual page 72

Clear the OTUK-BDI Alarm
Clear the OTUK-BDI Alarm
Step 1 At the near-end node, use site practices to clean trunk transmitting fiber toward the far-end node and the client receiving
fiber.
Step 2
At the far-end node, determine whether any OTUK-AIS condition, is present on the Trunk-RX. If so, the root cause to
be investigated is the Trunk-TX side on the near-end card (the one alarmed for OTUK-BDI) because that is the section
where the AIS bit is inserted.
Step 3 If there is no OTUK-AIS at the far-end node, continue to investigate performances of the Trunk-Rx: Look for other
OTU-related alarms, such as the OTUK-LOF condition or OTUK-SD condition at the far-end Trunk-RX. If either is
present, resolve the condition using the appropriate procedure in this chapter.
If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html
en/us/support/web/tsd-cisco-worldwide-contacts.html
your country.
OTUK-LOF Alarm
Default Severity: Critical (CR), Service-Affecting (SA)
Logical Objects: TRUNK
The Optical Transport Unit Loss of Frame (OTUK-LOF) alarm is raised when a frame loss is detected by an
invalid frame alignment in the received frames. This alarm indicates that the card has lost frame delineation
on the input data. Loss of frame occurs when the optical transport unit overhead frame alignment (FAS) area
is invalid for more than five frames and that the error persists more than three milliseconds.
This alarm is also raised when the FEC settings on trunk ports of the source and destination cards are different.
Clear the OTUK-LOF Alarm
Verify if the FEC settings on trunk ports of the source and destination cards are same.
If the alarm does not get cleared, you need to report a Service-Affecting (SA) problem. Log into the Technical Support
Website at http://www.cisco.com/c/en/us/support/index.html
en/us/support/web/tsd-cisco-worldwide-contacts.html
your country.
OTUK-SD Alarm
Default Severity: Not Alarmed (NA), Non Service-Affecting (NSA)
Logical Objects: TRUNK
The Optical Transport Unit Signal Degrade (OTUK-SD) alarm occurs when the quality of signal is so poor
that the bit error rate on the incoming optical line passed the signal degrade threshold.
Troubleshooting Guide for Cisco NCS 1002, IOS XR Release 6.3.x
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