Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

BDI

 

Table 1: Condition Details

Parameter

Description

Code

bdi

Description/Cause

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.)

Entities Affected

OTN OTU interfaces (see respective table below).

Default Severity

Not alarmed.

Service Affecting

No (false).

Condition Clearing

See Clearing a BDI condition.

Related Fault Hierarchy

See OTN interface fault hierarchy.

Table 2: OTN OTU Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

otu4:<chassis>/<slot>/<2>/<1>/<subport.och.tributary>

UFM6

Fault LED, 200G line port

On

otu4:<chassis>/<slot>/<1>/<1>

UFM4

Fault LED, 100G line port

On

otu4:<chassis>/<slot>/<subslot>/<port>

1x CFP BIC

Fault LED, 100G port

otu2:<chassis>/<slot>/<subslot>/<port>

12x SFP+ BIC

Fault LED, 10G port

otu2e:<chassis>/<slot>/<subslot>/<port>

Note: Supported on UFM3 only.

Clearing a BDI Condition

Note

Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

  1. Check for and clear all alarms downstream of the local NE.
  2. 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.