rfc2720.txt

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    INDEX  { flowRuleInfoIndex }
    ::= { flowRuleSetInfoTable 1 }

FlowRuleSetInfoEntry ::= SEQUENCE {
    flowRuleInfoIndex         Integer32,
    flowRuleInfoSize          Integer32,
    flowRuleInfoOwner         UTF8OwnerString,
    flowRuleInfoTimeStamp     TimeStamp,
    flowRuleInfoStatus        RowStatus,
    flowRuleInfoName          OCTET STRING,
    flowRuleInfoRulesReady    TruthValue,
    flowRuleInfoFlowRecords   Integer32
    }

flowRuleInfoIndex OBJECT-TYPE
    SYNTAX  Integer32 (1..2147483647)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "An index which selects an entry in the flowRuleSetInfoTable.
        Each such entry contains control information for a particular
        RuleSet which the meter may run."
    ::= { flowRuleSetInfoEntry 1 }

flowRuleInfoSize OBJECT-TYPE
    SYNTAX  Integer32
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "Number of rules in this RuleSet.  Setting this variable will



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RFC 2720          Traffic Flow Measurement: Meter MIB       October 1999


        cause the meter to allocate space for these rules."
    ::= { flowRuleSetInfoEntry 2 }

flowRuleInfoOwner OBJECT-TYPE
    SYNTAX  UTF8OwnerString
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "Identifies the manager which 'owns' this RuleSet.  A manager
        must set this variable when creating a row in this table."
    ::= { flowRuleSetInfoEntry 3 }

flowRuleInfoTimeStamp OBJECT-TYPE
    SYNTAX  TimeStamp
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
        "Time this row's associated RuleSet was last changed."
    ::= { flowRuleSetInfoEntry 4 }

flowRuleInfoStatus OBJECT-TYPE
    SYNTAX  RowStatus
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "The status of this flowRuleSetInfoEntry. If this value is
        not active(1) the meter must not attempt to use the row's
        associated RuleSet.  Once its value has been set to active(1)
        a manager may not change any of the other variables in the
        row, nor the contents of the associated RuleSet.  Any attempt
        to do so should result in a notWritable(17) SNMP error-status
        for such variables or objects.

        To download a RuleSet, a manger could:
           - Locate an open slot in the RuleSetInfoTable.
           - Create a RuleSetInfoEntry by setting the status for this
               open slot to createAndWait(5).
           - Set flowRuleInfoSize and flowRuleInfoName as required.
           - Download the rules into the row's rule table.
           - Set flowRuleInfoStatus to active(1).

        The RuleSet would then be ready to run. The manager is not
        allowed to change the value of flowRuleInfoStatus from
        active(1) if the associated RuleSet is being referenced by any
        of the entries in the flowManagerInfoTable.

        Setting RuleInfoStatus to destroy(6) destroys the associated
        RuleSet together with any flow data collected by it."



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    ::= { flowRuleSetInfoEntry 5 }

flowRuleInfoName OBJECT-TYPE
    SYNTAX  OCTET STRING (SIZE (0..127))
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "An alphanumeric identifier used by managers and readers to
        identify a RuleSet.  For example, a manager wishing to run a
        RuleSet named WWW-FLOWS could search the flowRuleSetInfoTable
        to see whether the WWW-FLOWS RuleSet is already available on
        the meter.

        Note that references to RuleSets in the flowManagerInfoTable
        use indexes for their flowRuleSetInfoTable entries.  These may
        be different each time the RuleSet is loaded into a meter."
    ::= { flowRuleSetInfoEntry 6 }

flowRuleInfoRulesReady OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-create
    STATUS  deprecated
    DESCRIPTION
        "Indicates whether the rules for this row's associated RuleSet
        are ready for use.  The meter will refuse to 'run' the RuleSet
        unless this variable has been set to true(1).
        While RulesReady is false(2), the manager may modify the
        RuleSet, for example by downloading rules into it."
    ::= { flowRuleSetInfoEntry 7 }

flowRuleInfoFlowRecords OBJECT-TYPE
    SYNTAX  Integer32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
        "The number of entries in the flow table for this RuleSet.
        These may be current (waiting for collection by one or more
        meter readers) or idle (waiting for the meter to recover
        their memory)."
    ::= { flowRuleSetInfoEntry 8 }

--
-- Control Group:  Interface Info Table
--

flowInterfaceTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF FlowInterfaceEntry
    MAX-ACCESS  not-accessible



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    STATUS  current
    DESCRIPTION
        "An array of information specific to each meter interface."
    ::= { flowControl 2 }

flowInterfaceEntry OBJECT-TYPE
    SYNTAX  FlowInterfaceEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "Information about a particular interface."
    INDEX   { ifIndex }
    ::= { flowInterfaceTable 1 }

FlowInterfaceEntry ::= SEQUENCE {
    flowInterfaceSampleRate   Integer32,
    flowInterfaceLostPackets  Counter32
    }

flowInterfaceSampleRate OBJECT-TYPE
    SYNTAX  Integer32
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
        "The parameter N for statistical counting on this interface.
        Set to N to count 1/Nth of the packets appearing at this
        interface.  A sampling rate of 1 counts all packets.
        A sampling rate of 0 results in the interface being ignored
        by the meter.

        A meter should choose its own algorithm to introduce variance
        into the sampling so that exactly every Nth packet is counted.
        The IPPM Working Group's RFC 'Framework for IP Performance
        Metrics' [IPPM-FRM] explains why this should be done, and sets
        out an algorithm for doing it."
    DEFVAL { 1 }
    ::= { flowInterfaceEntry 1 }

flowInterfaceLostPackets OBJECT-TYPE
    SYNTAX  Counter32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
        "The number of packets the meter has lost for this interface.
        Such losses may occur because the meter has been unable to
        keep up with the traffic volume."
    ::= { flowInterfaceEntry 2 }




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RFC 2720          Traffic Flow Measurement: Meter MIB       October 1999


--
-- Control Group:  Meter Reader Info Table
--

-- Any meter reader wishing to collect data reliably for flows
-- should first create a row in this table.  It should write that
-- row's flowReaderLastTime object each time it starts a collection
-- pass through the flow table.

-- If a meter reader (MR) does not create a row in this table, e.g.
-- because its MIB view [RFC2575] did not allow MR create access to
-- flowReaderStatus, collection can still proceed but the meter will
-- not be aware of meter reader MR.  This could lead the meter to
-- recover flows before they have been collected by MR.

flowReaderInfoTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF FlowReaderInfoEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "An array of information about meter readers which have
        registered their intent to collect flow data from this meter."
    ::= { flowControl 3 }

flowReaderInfoEntry OBJECT-TYPE
    SYNTAX  FlowReaderInfoEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "Information about a particular meter reader."
    INDEX  { flowReaderIndex }
    ::= { flowReaderInfoTable 1 }

FlowReaderInfoEntry ::= SEQUENCE {
    flowReaderIndex            Integer32,
    flowReaderTimeout          Integer32,
    flowReaderOwner            UTF8OwnerString,
    flowReaderLastTime         TimeStamp,
    flowReaderPreviousTime     TimeStamp,
    flowReaderStatus           RowStatus,
    flowReaderRuleSet          Integer32
    }

flowReaderIndex OBJECT-TYPE
    SYNTAX  Integer32 (1..2147483647)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION



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        "An index which selects an entry in the flowReaderInfoTable."
    ::= { flowReaderInfoEntry 1 }

flowReaderTimeout OBJECT-TYPE
    SYNTAX  Integer32
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "Specifies the maximum time (in seconds) between flow data
        collections for this meter reader.  If this time elapses
        without a collection, the meter should assume that this meter
        reader has stopped collecting, and delete this row from the
        table.  A value of zero indicates that this row should not be
        timed out."
    ::= { flowReaderInfoEntry 2 }

flowReaderOwner OBJECT-TYPE
    SYNTAX  UTF8OwnerString
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "Identifies the meter reader which created this row."
    ::= { flowReaderInfoEntry 3 }

flowReaderLastTime OBJECT-TYPE
    SYNTAX  TimeStamp
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "Time this meter reader began its most recent data collection.

        This variable should be written by a meter reader as its first
        step in reading flow data.  The meter will set this LastTime
        value to its current Uptime, and set its PreviousTime value
        (below) to the old  LastTime.  This allows the meter to
        recover flows which have been inactive since PreviousTime,
        for these have been collected at least once.

        If the meter reader fails to write flowLastReadTime, collection
        may still proceed but the meter may not be able to recover
        inactive flows until the flowReaderTimeout has been reached
        for this entry."
    ::= { flowReaderInfoEntry 4 }

flowReaderPreviousTime OBJECT-TYPE
    SYNTAX  TimeStamp
    MAX-ACCESS  read-only
    STATUS  current



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    DESCRIPTION
        "Time this meter reader began the collection before last."
    ::= { flowReaderInfoEntry 5 }

flowReaderStatus OBJECT-TYPE
    SYNTAX  RowStatus
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "The status of this FlowReaderInfoEntry. A value of active(1)
        implies that the associated reader should be collecting data
        from the meter.  Once this variable has been set to active(1)
        a manager may only change this row's flowReaderLastTime and
        flowReaderTimeout variables."
    ::= { flowReaderInfoEntry 6 }

flowReaderRuleSet OBJECT-TYPE
    SYNTAX  Integer32 (1..2147483647)
    MAX-ACCESS  read-create
    STATUS  current
    DESCRIPTION
        "An index to the array of RuleSets.  Specifies a set of rules
        of interest to this meter reader.  The reader will attempt to
        collect any data generated by the meter for this RuleSet, and
        the meter will not recover the memory of any of the RuleSet's
        flows until this collection has taken place.  Note that a
        reader may have entries in this table for several RuleSets."
    ::= { flowReaderInfoEntry 7 }

--
-- Control Group:  Manager Info Table
--

-- Any manager wishing to run a RuleSet must create a row in this
-- table.  Once it has a table row, the manager may set the control
-- variables in its row so as to cause the meter to run any valid
-- RuleSet held by the meter.

-- A single manager may run several RuleSets; it must create a row
-- in this table for each of them.  In short, each row of this table
-- describes (and controls) a 'task' which the meter is executing.

flowManagerInfoTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF FlowManagerInfoEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "An array of information about managers which have



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        registered their intent to run RuleSets on this meter."
    ::= { flowControl 4 }