Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    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.

    Modified: 2017-03-24