Standing Conditions
SQM-P (Path-Loss of Sequence)
The corresponding SNMP name for this condition is“lossofSequenceHigherOrderPath”.
AIDTYPE Default
Severity
Probable Cause Suggested Corrective Action
STS1,
STS3C
CR The path is configured as a
member of a virtual
concatenation bundle and
the sequence indicator
values were found to be in
error.
The most probable causes
of this are:
• A difference in the
provisioned bundle
size, member paths,
or order of member
paths between the
near and far-end,
• A difference in the
provisioned properties
of the GFP mapping
facilities between the
near and far-end,
• Impairment of the
received signal
affecting one or more
of the paths,
• Mis-connection of
cross-connected
paths used to form the
virtual concatenation
bundle at an
intermediate cross-
connection point
between the near and
far-end,
• Equipment failure at
the near or far-end.
1 Verify that the GFP facility which employs the path
as a member of its virtually concatenated bundle is
correctly provisioned and is operating in-service
normal (“In Service”).
2 Verify that the far-end GFP facility instance is also
correctly and consistently provisioned relative to the
near-end instance, and that it is operating in-service
normal (“In Service”) state.
3 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).
4 Verify that the incoming optical fiber 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.
5 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,
otherwise locate the source of the signal problem
upstream and repair the problem.
6 Verify that each intermediate point through which
the paths within the bundle pass are correctly cross-
connected.
7 Replace the near-end plug supporting the facility.
8 Replace the far-end plug supporting the facility.
9 Replace the near-end module supporting the facility.
10 Replace the far-end module supporting the facility.
VC4
Table 404: SQM-P (Standing Condition)
984 FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A