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    IsisAdjDown

    Table 1: Alarm Details

    Parameter

    Description

    Code

    isisAdjDown

    Description

    IS-IS AdjacencyDown: An IS-IS adjacency is down and no longer being considered for routing.

    Note: This alarm can be raised only after an adjacency (neighbor) has been established.

    Entities Affected

    Management interfaces (see respective table below).

    Possible Causes

    • A fiber is either cut or disconnected.
    • Equipment (for example, the router or module) on the neighbor side is down; for example, it is being restarted.

    Default Severity

    Major

    Service Affecting

    Yes (true).

    Alarm Clearing

    See Clearing an IsisAdjDown alarm.

    Related Fault Hierarchy

    Table 2: Management Interfaces

    Entity Name

     

    Fault Indicator

    Module

    Indicator

    Status

    mgt:n

    where n is an alphanumeric string.

    ROADM2, ILA

    Fault LED, L1 port

    On

    Fault LED, C<n> port

    sysmgt

    CMM

    See BTI7800 Series Module and BIC LED Behavior.

    Clearing an IsisAdjDown Alarm

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

    1. Do the following:
      • Inspect the fiber connection, and ensure that the fiber is intact, thoroughly clean, and correctly connected to the port.
      • Check the equipment on the neighbor side and ensure that it is powered on and operating.
    2. Check for alarms on the management 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