Standing Conditions
LOFLOM-ODU (ODU-Loss of
Frame/LOM)
The corresponding SNMP name for this condition is
“lossOfFrameLossOfMultiFrameOdu”.
AIDTYPE Default
Severity
Probable Cause Suggested Corrective Action
CH CR The receiver is unable to
lock onto the framing
pattern, and/or to verify
the correct sequence in
the multi-frame alignment
signal that is obtained by
demultiplexing the
incoming
(network side) signal.
This may be due to a
degraded signal or failure
of the upstream
equipment that originated
the signal.
1 Verify that both the near-end and far-end
facilities are provisioned correctly and
are in-service, and that the far-end
associated client facility is provisioned
correctly and is in-service.
2 Verify that the incoming cable is the
correct cable and that the transmit and
receive ports are connected to their
proper respective portions of the cable
(i.e. that the fibers are not swapped
between transmit and receive or that a
crossover cable has not been used in
place of a straight cable for electrical
Ethernet connections).
3 Verify that the incoming cable (electrical
or optical) is firmly connected to the
receive port associated with the facility
and that the connector is not physically
impaired by obstructions, dirt or
component damage. Clean the
connector or replace the cable, plug or
module, as appropriate, depending upon
the cause determined from the physical
examination.
4 Verify that a signal is present at the
cable termination and that the signal
conforms to the required specifications
(e.g. minimum and maximum power
levels). If the signal meets the required
specifications proceed to the next step
below, otherwise locate the source of
the signal problem upstream and repair
the problem.
5 Replace the plug or module supporting
the facility.
Table 254: LOFLOM-ODU (Standing Condition)
876 FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A
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