Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
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1
Perform the procedure “Path Power Trace” (p. 3-8) to identify the network path the
particular alarmed channel is traversing.
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2
The trouble point for the alarm is directly upstream of the alarmed point. Retrieve a list of
active alarms on the NE and resolve issues/alarms at the trouble point. Of particular
interest are card or wavelength tracker failures.
CLI alm
show condition
WEBUI Reports > Condition List
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3
Retrieve the configured fiber topology on the NE:
CLI show interface topology *
WEBUI Select Connections > Physical Topology.
Ensure that the physical fiber topology in the upstream direction from the alarmed port to
the ingress point into the NE matches the configured topology. Caution A changing the
physical fiber topology of the NE may be service impacting if the fiber is currently
carrying services. It is recommended to wait for a maintenance window before changing
the physical fiber topology of the NE.
Trouble-clearing procedures
OCHCOLLISION-OUT
OCHCOLLISION-OUT (Channel collision Output Direction)
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2-212
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
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