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PerfHist-TC-MIB DEFINITIONS ::= BEGIN

IMPORTS
   MODULE-IDENTITY,
   Gauge32, mib-2
       FROM SNMPv2-SMI
   TEXTUAL-CONVENTION
       FROM SNMPv2-TC;

perfHistTCMIB MODULE-IDENTITY
     LAST-UPDATED "200308130000Z"
     ORGANIZATION "IETF AToM MIB WG"
     CONTACT-INFO
        "WG charter:
           http://www.ietf.org/html.charters/atommib-charter.html

         Mailing Lists:
           General Discussion: atommib@research.telcordia.com
           To Subscribe: atommib-request@research.telcordia.com

         Editor:  Kaj Tesink
         Postal:  Telcordia Technologies
                  331 Newman Springs Road
                  Red Bank, NJ 07701
                  USA
         Tel:     +1 732 758 5254
         E-mail:  kaj@research.telcordia.com"

     DESCRIPTION
      "This MIB Module provides Textual Conventions
       to be used by systems supporting 15 minute
       based performance history counts.

       Copyright (C) The Internet Society (2003).
       This version of this MIB module is part of
       RFC 3593;  see the RFC itself for full
       legal notices."
     REVISION      "200308130000Z"
     DESCRIPTION
      "Contact information and references updated.
       No technical changes have been applied.
       Published as RFC 3593."
     REVISION      "199811071100Z"
     DESCRIPTION
      "The RFC 2493 version of this MIB module."
     ::= { mib-2 58 }



-- The Textual Conventions defined below are organized
-- alphabetically

-- Use of these TCs assumes the following:
-- 0  The agent supports 15 minute based history
--    counters.
-- 0  The agent is capable of keeping a history of n
--    intervals of 15 minute performance data.  The
--    value of n is defined by the specific MIB
--    module but shall be 0 < n =< 96.
-- 0  The agent may optionally support performance
--    data aggregating the history intervals.
-- 0  The agent will keep separate tables for the
--    current interval, the history intervals, and
--    the total aggregates.
-- 0  The agent will keep the following objects.
--    If performance data is kept for multiple instances
--    of a measured entity, then
--    these objects are applied to each instance of
--    the measured entity (e.g., interfaces).
--
-- xyzTimeElapsed OBJECT-TYPE
--       SYNTAX  INTEGER (0..899)
--       MAX-ACCESS  read-only
--       STATUS  current
--       DESCRIPTION
--       "The number of seconds that have elapsed since
--       the beginning of the current measurement period.
--       If, for some reason, such as an adjustment in the
--       system's time-of-day clock, the current interval
--       exceeds the maximum value, the agent will return
--       the maximum value."
--       ::= { xxx }

-- xyzValidIntervals OBJECT-TYPE
--       SYNTAX  INTEGER (0..<n>)
--       MAX-ACCESS  read-only
--       STATUS  current
--       DESCRIPTION
--       "The number of previous near end intervals
--       for which data was collected.
--          [ The overall constraint on <n> is 1 =< n =< 96; ]
--          [ Define any additional constraints on <n> here. ]
--       The value will be <n> unless the measurement was
--       (re-)started within the last (<n>*15) minutes, in which
--       case the value will be the number of complete 15
--       minute intervals for which the agent has at least
--       some data.  In certain cases (e.g., in the case



--       where the agent is a proxy) it is possible that some
--       intervals are unavailable.  In this case, this
--       interval is the maximum interval number for
--       which data is available."
--       ::= { xxx }

-- xyzInvalidIntervals OBJECT-TYPE
--     SYNTAX  INTEGER (0..<n>)
--     MAX-ACCESS  read-only
--     STATUS  current
--     DESCRIPTION
--       "The number of intervals in the range from
--        0 to xyzValidIntervals for which no
--        data is available.  This object will typically
--        be zero except in cases where the data for some
--        intervals are not available (e.g., in proxy
--        situations)."
--       ::= { xxx }

PerfCurrentCount ::= TEXTUAL-CONVENTION
      STATUS  current
      DESCRIPTION
         "A counter associated with a
          performance measurement in a current 15
          minute measurement interval.  The value
          of this counter starts from zero and is
          increased when associated events occur,
          until the end of the 15 minute interval.
          At that time the value of the counter is
          stored in the first 15 minute history
          interval, and the CurrentCount is
          restarted at zero.  In the
          case where the agent has no valid data
          available for the current interval the
          corresponding object instance is not
          available and upon a retrieval request
          a corresponding error message shall be
          returned to indicate that this instance
          does not exist (for example, a noSuchName
          error for SNMPv1 and a noSuchInstance for
          SNMPv2 GET operation)."
       SYNTAX  Gauge32









PerfIntervalCount ::= TEXTUAL-CONVENTION
      STATUS  current
      DESCRIPTION
         "A counter associated with a
          performance measurement in a previous
          15 minute measurement interval.  In the
          case where the agent has no valid data
          available for a particular interval the
          corresponding object instance is not
          available and upon a retrieval request
          a corresponding error message shall be
          returned to indicate that this instance
          does not exist (for example, a noSuchName
          error for SNMPv1 and a noSuchInstance for
          SNMPv2 GET operation).
          In a system supporting
          a history of n intervals with
          IntervalCount(1) and IntervalCount(n) the
          most and least recent intervals
          respectively, the following applies at
          the end of a 15 minute interval:
          - discard the value of IntervalCount(n)
          - the value of IntervalCount(i) becomes that
            of IntervalCount(i-1) for n >= i > 1
          - the value of IntervalCount(1) becomes that
            of CurrentCount
          - the TotalCount, if supported, is adjusted."
       SYNTAX  Gauge32

PerfTotalCount ::= TEXTUAL-CONVENTION
      STATUS  current
      DESCRIPTION
         "A counter associated with a
          performance measurements aggregating the
          previous valid 15 minute measurement
          intervals.  (Intervals for which no valid
          data was available are not counted)"
       SYNTAX  Gauge32

END