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    OCI

    Table 1: Alarm Details

    Parameter

    Description

    Code

    oci

    Description/Cause

    Open Connection Indication, ODU: The local interface has received an ODU-OCI signal from the far-end NE, indicating that an optical cross-connect is not present on an upstream node.

    Note: The local interface that receives the ODU-OCI signal raises this alarm only if the local interface is part of a cross-connect. If the local interface is not part of a cross-connect, the received ODU-OCI signal is ignored.

    An interface transmits an ODU-OCI signal downstream if the interface is open (that is, not part of any cross-connect).

    For multiplexed ODU interfaces, the ODU-OCI signal is transmitted (and therefore received) on the containing ODU interface, not on the individual ODU sub-interfaces. The containing ODU interface transmits the ODU-OCI signal if none of the contained ODU sub-interfaces is part of a cross-connect. The containing ODU interface stops transmitting the ODU-OCI signal if at least one of the contained ODU sub-interfaces is part of a cross-connect. The ODU-OCI signal on multiplexed interfaces does not indicate which specific sub-interface is open (that is, not part of a cross-connect).

    Entities Affected

    OTN ODU interfaces (see respective table below).

    Default Severity

    Critical

    Service Affecting

    Yes (true).

    Alarm Clearing

    See Clearing an OCI alarm.

    Related Fault Hierarchy

    See OTN interface fault hierarchy.

    Table 2: OTN ODU Interfaces

    Entity Name

     

    Fault Indicator

    Module

    Indicator

    Status

    odu4:<chassis>/<slot>/<2>/<1>/<subport.och.tributary>

    UFM6

    Fault LED, 200G line port

    On

    odu2e:<chassis>/<slot>/<2>/<1>/<subport.och.tributary.sub-interface>

    odu4:<chassis>/<slot>/<1>/<1>

    UFM4

    Fault LED, 100G line port

    odu4:<chassis>/<slot>/<subslot>/<port>

    1x CFP BIC

    Fault LED, 100G line port

    odu2:<chassis>/<slot>/<subslot>/<port.sub-interface>

    odu2e:<chassis>/<slot>/<subslot>/<port.sub-interface>

    Note: Supported on UFM3 only.

    odu2:<chassis>/<slot>/<subslot>/<port>

    12x SFP+ BIC

    Fault LED, 10G port

    odu2e:<chassis>/<slot>/<subslot>/<port>

    Note: Supported on UFM3 only.

    Clearing an OCI Alarm

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

    1. Provision the missing cross-connect. For information, see the BTI7800 Series Software Configuration Guide.
    2. Check for alarms on the local interface.
      • If the alarm clears, you have completed this procedure.
      • If the alarm does not clear, contact your next level of support.

    Modified: 2017-04-25