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    LoSync

    Table 1: Alarm Details

    Parameter

    Description

    Code

    loSync

    Description

    Loss of Synchronization: The signal received on the local interface is sufficiently degraded that it cannot be synchronized.

    Entities Affected

    Ethernet interfaces (see respective table below).

    Possible Causes

    • Either the fiber link or the optical connection is severely degraded.
    • The far-end optical transmitter is faulty.

    Default Severity

    Critical

    Service Affecting

    Yes (true).

    Alarm Clearing

    See Clearing a LoSync alarm.

    Related Fault Hierarchy

    See Ethernet interface fault hierarchy.

    Table 2: Ethernet Interfaces

    Entity Name

     

    Fault Indicator

    Module

    Indicator

    Status

    100ge:<chassis>/<slot>/<subslot>/<port>/<subport>

    1x CFP BIC

    Fault LED, 100G port

    On

    100ge:<chassis>/<slot>/<1>/<port>

    UFM6

    Fault LED, 100G port

    10ge:<chassis>/<slot>/<1>/<port>/<subport>

    UFM6

    Fault LED, 10G port

    10ge:<chassis>/<slot>/<subslot>/<port>/<subport>

    12x SFP+ BIC

    Fault LED, 10G port

    Clearing a LoSync Alarm

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

    1. Retrieve detailed information for the interface, and ensure that the value of the Optical Power Rx counter is within the range indicated by the Optical Power Received Minimum Threshold and Optical Power Received Maximum Threshold values.
      show interface name:identifier detail
    2. Inspect the fiber connection, and ensure that the fiber is intact, thoroughly clean, and correctly connected to the port.
    3. Check for and clear alarms on the far-end optical transmitter.
    4. Check for alarms on the local interface.
      • If the alarm has cleared, you have completed this procedure.
      • If the alarm does not clear, contact your next level of support.

    Modified: 2017-07-06