Apscm - Cisco NCS 2000 series Troubleshooting Manual

Alarm Troubleshooting
If the condition does not clear, log into the Technical Support Website at
for more information or call Cisco TAC (1 800 553-2447).

APSCM

Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: OCN, STMN
The APS Channel Mismatch alarm occurs when the NCS expects a working channel but receives a protect
channel. In many cases, the working and protect channels are crossed and the protect channel is active. If the
fibers are crossed and the working line is active, the alarm does not occur. The APSCM alarm occurs only
on the NCS when bidirectional protection is used on OC-N cards in a 1+1 protection group configuration.
The APSCM alarm does not occur in an optimized 1+1 protection configuration.
Warning
The laser is on when the card is booted and the safety key is in the on position (labeled 1). The port does
not have to be in service for the laser to be on. The laser is off when the safety key is off (labeled 0).
Statement 293
Warning
Invisible laser radiation could be emitted from the end of the unterminated fiber cable or connector.
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm
could pose an eye hazard. Statement 1056
Warning
Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure. Statement 1057
Clear the APSCM Alarm
Before you begin
Caution Always use the supplied electrostatic discharge wristband when working with a powered system. Plug the
wristband cable into the ESD jack located on the lower-right edge of the shelf assembly.
SUMMARY STEPS
1. Verify that the working-card channel fibers are physically connected directly to the adjoining node
working-card channel fibers.
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Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
APSCM
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