Alcatel-Lucent 1830 PSS-16 Maintenance And Trouble-Clearing User Manual page 397

Trouble-clearing procedures
LOM
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This may be caused by the following reasons:
• Damaged or dirty fiber connected to the far-end receiver
• Received power may not be within the acceptable range on OT port input
• Damaged or dirty transmitter inside pluggable module on the OT
• Problem at the upstream OT
Severity
Service affecting?
Applicability
Corrective Action
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
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.
This procedure details the corrective action for clearing the LOM declared on an OT port.
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 Query the receive power on the port where the LOM condition is present.
CLI
WEBUI
If the power is below a minimum threshold, the problem may be upstream from that port.
Visually inspect the OT port connection. Ensure that there are no loose fibers. If so,
connect the fiber properly.
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Check the immediate upstream OT for any alarm conditions. If there are any, clear the
2
failures.
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
Major
Yes
112SA1L, 112SCX10, 112SX10L, 11DPE12, 11DPE12E,
11QPA4, 11STAR1, 11STMM10, 11STGE12, 43SCX4, 43STA1P,
43STX4, 43STX4P, 4DPA4
NOTICE
Service-disruption hazard
"Reseating a Card" (p.
show interface <shelf slot port>
From the Equipment Tree, select the card, and select the desired port.
3-19).
LOM (Loss of Multiframe - OTU)
2-147