Table 1: Condition Details
Backward Defect Indication, OTN: The local interface has received a BDI signal from the NE at the far end of the fiber, indicating that no OTN OTU signal is being transmitted downstream of (and away from) the local NE. (See also Maintenance Signaling.)
OTN OTU interfaces (see respective table below).
Related Fault Hierarchy
Table 2: OTN OTU Interfaces
Fault LED, 200G line port
Fault LED, 100G line port
1x CFP BIC
Fault LED, 100G port
12x SFP+ BIC
Fault LED, 10G port
Note: Supported on UFM3 only.
Clearing a BDI Condition
Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.
- Check for and clear all alarms downstream of the local NE.
- Check for conditions on the local interface.
If the condition clears, you have completed this procedure.
If the condition does not clear, contact your next level of support.