BDIEGR
BDIEGR (Egress Backward Defect Indication - ODU)
The OT port has detected a Backward Defect Indication at the OTUk Section layer
transmitting out of the client port. This defect indicates that the peer OTUk port has
detected a condition that is treated as Server Signal Failure (conditions such as LOS, LOF
or LOM would contribute to SSF).
This may be caused by the following reasons:
• A misconnected, damaged or dirty fiber on the trail between the local OTUk port
transmitter and the far end receiver
• OTS/OMS layer failure on the OCh trail
• The received power may not be within the acceptable range on the Far end input
Severity NR
Service affecting? No
Applicability 112SCX10, 112SX10L, 43SCX4, 43STX4, 43STX4P
Corrective Action
This procedure details the corrective action for a BDIEGR against the 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
Check the alarms/conditions along the OCh trail.
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2
Identify the farthest upstream alarm/condition relative to the far end OTUk port.
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3
Follow the procedure for clearing the identified alarm/condition.
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4
If the peer OTUk port is in a client domain (this would be the case when BDI is detected
on a client OT port provisioned as OTU2), request corrective action by client operators.
Trouble-clearing procedures BDIEGR (Egress Backward Defect Indication - ODU)
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2-48
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
E ND OF STEPS
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