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    Defining a Discontinuity Check to Validate Delta Values (SRC CLI)

    You can configure a monitor to use a discontinuity check to prevent sending false alarms when the value of the monitored object is reset between two samples.

    Use a discontinuity check when the sampling type for a monitor is delta-value and the test type is Boolean or threshold. You define a variable, called a discontinuity marker (a MIB object used to validate the delta, or difference, between values). Typically, the marker object is of the TimeTicks, DateAndTime, or Timestamp type.

    To define a discontinuity check:

    1. Configure an SNMP alarm with the sample type set to delta-value.

      See Configuring an SNMP Alarm on a C Series Controller (SRC CLI).

    2. From configuration mode, access the configuration statements that configures a discontinuity check. For example, for an alarm named ifErrorsDelta:
      [edit]user@host# edit snmp monitor alarm ifErrorsDelta delta-discontinuity-check
    3. Specify the name or object identifier (OID) of the discontinuity marker. For example:
      [edit snmp monitor alarm sequence-check ifErrorsDelta delta-discontinuity-check]user@host# set variable ifTable.ifEntry.ifLastChange

    Published: 2014-06-12