<pre>Network Working Group                                           R. Dietz
Request for Comments: 4150                                    Hifn, Inc.
Category: Standards Track                                        R. Cole
                                                                 JHU/APL
                                                             August 2005


                   <span class="h1">Transport Performance Metrics MIB</span>

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects used for monitoring
   selectable performance metrics and statistics derived from the
   monitoring of network packets and sub-application level transactions.
   The metrics can be defined through reference to existing IETF, ITU,
   and other standards organizations' documents.  The monitoring covers
   both passive and active traffic generation sources.




















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Table of Contents

   <a href="#section-1">1</a>. The Internet-Standard Management Framework ......................<a href="#page-2">2</a>
   <a href="#section-2">2</a>. Overview ........................................................<a href="#page-2">2</a>
      <a href="#section-2.1">2.1</a>. Terms ......................................................<a href="#page-5">5</a>
      <a href="#section-2.2">2.2</a>. Report Aggregation .........................................<a href="#page-5">5</a>
      <a href="#section-2.3">2.3</a>. Structure of the MIB .......................................<a href="#page-6">6</a>
      <a href="#section-2.4">2.4</a>. Statistics for Aggregation of Data: Conventions ............<a href="#page-7">7</a>
      <a href="#section-2.5">2.5</a>. Relationship to the Remote Monitoring MIB ..................<a href="#page-7">7</a>
      <a href="#section-2.6">2.6</a>. Relationship to RMON2-MIB Protocol Identifier Reference ....<a href="#page-7">7</a>
      <a href="#section-2.7">2.7</a>. Relationship to Standards-Based Performance Metrics ........<a href="#page-7">7</a>
      <a href="#section-2.8">2.8</a>. Relationship to Application Performance Measurement MIB ....<a href="#page-8">8</a>
   <a href="#section-3">3</a>. Statistics Perspective ..........................................<a href="#page-8">8</a>
      <a href="#section-3.1">3.1</a>. Statistics Structure ......................................<a href="#page-10">10</a>
      <a href="#section-3.2">3.2</a>. Statistics Analysis .......................................<a href="#page-11">11</a>
   <a href="#section-4">4</a>. Definitions ....................................................<a href="#page-11">11</a>
   <a href="#section-5">5</a>. Acknowledgements ...............................................<a href="#page-51">51</a>
   <a href="#section-6">6</a>. Security Considerations ........................................<a href="#page-52">52</a>
   <a href="#section-7">7</a>. Normative References ...........................................<a href="#page-53">53</a>
   <a href="#section-8">8</a>. Informative References .........................................<a href="#page-54">54</a>

<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>.  The Internet-Standard Management Framework</span>

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to <a href="./rfc3410#section-7">section&nbsp;7 of
   RFC 3410</a> [<a href="./rfc3410" title="&quot;Introduction and Applicability Statements for Internet- Standard Management Framework&quot;">RFC3410</a>].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   <a href="./rfc2578">RFC 2578</a> [<a href="./rfc2578" title="&quot;Structure of Management Information Version 2 (SMIv2)&quot;">RFC2578</a>], STD 58, <a href="./rfc2579">RFC 2579</a> [<a href="./rfc2579" title="&quot;Textual Conventions for SMIv2&quot;">RFC2579</a>] and STD 58, <a href="./rfc2580">RFC 2580</a>
   [<a href="./rfc2580" title="&quot;Conformance Statements for SMIv2&quot;">RFC2580</a>].

<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>.  Overview</span>

   This document continues the architecture created in the RMON2-MIB
   [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>] by providing a major feature upgrade, primarily by
   providing new metrics and studies to assist in the analysis of
   performance for sub-application transaction flows in the network, in
   direct relationship to the transport of application layer protocols.

   Performance-monitoring agents have been widely used to analyze the
   parameters and metrics related to the perceived performance of
   distributed applications and services in networks.  The metrics
   collected by these agents have ranged from basic response time to a



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   combination of metrics related to the loss and re-transmission of
   datagrams and PDUs.  Although the metrics are becoming more useful in
   the implementation of service-level monitoring and troubleshooting
   tools, the lack of a standard method to report these has limited the
   deployment to very specific customer needs and areas.

   This document is intended to create a general framework for the
   collection and reporting of performance-related metrics on sub-
   application level transaction flows in a network.  The MIB in this
   document is directly linked to the current RMON2-MIB [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>], and
   uses the Protocol Directory as a key component in reporting the
   layering involved in the sub-application level transaction flows.

   The specific objectives of this document are to:

      + Provide a drill-down capability to complement the user-perceived
        monitoring defined within the Application Performance
        Measurement MIB (APM-MIB) [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].  This capability is
        intended to support trouble resolution, further characterization
        of performance, and a finer granularity of monitoring
        capabilities.  The APM-MIB provides a method for retrieving
        aggregated measurement data of the end-user's perception of
        application-level performance.  APM additionally provides
        thresholding and associated alarms if the end-user perceived
        performance degrades below defined thresholds.  The Transport
        Performance Metrics MIB (TPM-MIB) complements the APM-MIB
        capabilities by monitoring sub-application level transaction
        aspects not typically perceived by the end-user.  As an example,
        APM-MIB provides response time statistics of a typical web-
        browser application.  This application typically consists of DNS
        transactions, TCP connection establishment (or multiple
        establishments), HTTP download of the base page, and multiple
        downloads of the various embedded objects.  Ideally, TPM-MIB
        would provide statistics on the performance aspects of these
        multiple sub-application level transactions.

      + Provide additional performance metrics and related statistics.
        For troubleshooting and a finer granularity of performance
        monitoring, it is useful to provide measurements of additional
        metrics beyond those supported by the APM-MIB.

      + Support standards-based metrics and associated statistical
        aggregation by defining methods to reference those standards.
        The TPM-MIB provides a capability to describe metrics by
        reference to appropriate IETF, ITU, or other standards bodies
        defining metrics, including enterprise-specific standards
        bodies.  This capability is provided through the
        tpmMetricsDefTable.



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        Specifically, this MIB itself does not make references to metric
        specifications of the IETF, ITU and other organizations.
        Instead, it allows for the setup of the tpmMetricDefTable that
        does reference such IETF, ITU, and other metric specifications,
        and it allows pointers to such specifications to be dynamically
        listed in this table.  The following objects allow for that, and
        the DESCRIPTION clauses (of the objects below) explain how this
        is done:

               tpmMetricDefName OBJECT-TYPE
               tpmMetricDefReference OBJECT-TYPE
               tpmMetricDefGlobalID OBJECT-TYPE

        The tpmMetricDefGlobalID object contains a reference to the
        Object ID in a metrics registration MIB being developed in the
        IP Performance Metrics (IPPM) Working Group at the IETF; e.g.,
        the IPPM-REGISTRY-MIB [<a href="./rfc4148" title="&quot;IP Performance Metrics (IPPM) Metrics Registry&quot;">RFC4148</a>], which defines the metric.  For
        metrics defined within the IPPM Working Group, which are
        included in the IPPM-REGISTRY-MIB, this object is used to
        reference those metrics directly.  For metrics not included
        within the IPPM-REGISTRY-MIB, the value of this object is set
        to 0.0 for none.

        Examples of appropriate references include the ITU-T
        Recommendation Y.1540 [<a href="#ref-Y.1540" title="&quot;IP Data Transport Service - IP packet transfer performance metrics&quot;">Y.1540</a>] on IP packet transfer performance
        metrics, and the IETF documents from the IPPM WG; e.g., <a href="./rfc2681">RFC 2681</a>
        on the round trip delay metric [<a href="./rfc2681" title="&quot;A Round-Trip Delay Metric for IPPM&quot;">RFC2681</a>] or <a href="./rfc3393">RFC3393</a> on the delay
        variation metric [<a href="./rfc3393" title="&quot;IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)&quot;">RFC3393</a>].  Others include <a href="./rfc2679">RFC 2679</a> [<a href="./rfc2679" title="&quot;A One-way Delay Metric for IPPM&quot;">RFC2679</a>],
        <a href="./rfc2680">RFC2680</a> [<a href="./rfc2680" title="&quot;A One-Way Packet Loss Metric for IPPM&quot;">RFC2680</a>], and <a href="./rfc3432">RFC3432</a> [<a href="./rfc3432" title="&quot;Network Performance Measurement with Periodic Streams&quot;">RFC3432</a>].  Although no specific
        metric is mandatory, implementations should, at a minimum,
        support a round-trip delay and a round-trip loss metric.

      + Provide (as an option) a table storing the measurements of the
        metrics on a transaction by transaction basis.  There are times
        when it is useful to have access to the raw measurements.  The
        tpmCurReportTable optionally provides access to this capability.

   Although this document outlines the basic measurements of performance
   in regard to the transport of application flows, it does not attempt
   to measure or provide a means to measure the actual perceived
   performance of the application transactions or quality.  The detailed
   measurements of end-user-perceived performance are directly related
   to this document and may be found in the APM-MIB [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].

   The objects defined in this document are intended as an interface
   between an RMON agent and an RMON management application and are not
   intended for direct manipulation by humans.  Although some users may
   tolerate the direct display of some of these objects, few will



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   tolerate the complexity of manually manipulating objects to
   accomplish row creation.  These functions should be handled by the
   management application.

<span class="h3"><a class="selflink" id="section-2.1" href="#section-2.1">2.1</a>.  Terms</span>

   This document uses some terms that need introduction:

   DataSource
        A source of data for monitoring purposes.  This term is used
        exactly as defined in the RMON2-MIB [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>].

   protocol
        A specific protocol encapsulation, as identified for monitoring
        purposes.  This term is used exactly as defined in the RMON
        Protocol Identifiers document [<a href="./rfc2895" title="&quot;Remote Network Monitoring MIB Protocol Identifiers&quot;">RFC2895</a>].

   performance metric
        A specific, measured reporting metric, as identified for
        monitoring purposes.  There can be several metrics reported by
        an agent in the same implementation.  The metrics are extensible
        based on the agent implementation.

   application
        A network-based, high-level protocol performing useful work to
        an end-user of an end-system.  Typically, the application
        performs multiple request/response transactions to complete its
        work.  E.g., a web application downloading a web page completes
        DNS, TCP-connect, and multiple HTTP GET transactions prior to
        completing its task.

   transactions
        Elemental request/response transactions comprising more complex
        network-based applications.  E.g., a transaction may include an
        ftp get request and the file download in response.

<span class="h3"><a class="selflink" id="section-2.2" href="#section-2.2">2.2</a>.  Report Aggregation</span>

   This MIB module provides functions that aggregate measurements into
   higher-level summaries identical to the aggregation defined in the
   APM-MIB [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].  In addition to temporal aggregation of data, the
   Textual Convention, TransactionAggregationType, is imported from the
   APM-MIB, which specifies the nature of the spatial aggregation
   employed.







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<span class="h3"><a class="selflink" id="section-2.3" href="#section-2.3">2.3</a>.  Structure of the MIB</span>

   The objects are arranged in the following groups:

        -- tpmCapabilitiesGroup

        -- tpmAggregateReportsGroup

        -- tpmCurrentReportsGroup

        -- tpmExceptionReportsGroup

   These groups are the basic units of conformance.  If an agent
   implements a group, then it must implement all objects in that group.
   Although this section provides an overview of grouping and
   conformance information for this MIB module, the authoritative
   reference for such information is contained in the MODULE-COMPLIANCE
   and OBJECT-GROUP macros later in this MIB module.

   These groups are defined to provide a means of assigning object
   identifiers, and to provide a method for implementers of managed
   agents to know which objects they must implement.

<span class="h4"><a class="selflink" id="section-2.3.1" href="#section-2.3.1">2.3.1</a>.  The tpmCapabilitiesGroup</span>

   The tpmCapabilitiesGroup contains objects and tables that show the
   measurement protocol and metric capabilities of the agent.  This
   group primarily consists of the tpmTransMetricDirTable and the
   tpmMetricDefTable.

<span class="h4"><a class="selflink" id="section-2.3.2" href="#section-2.3.2">2.3.2</a>.  The tpmAggregateReportsGroup</span>

   The tpmAggregateReportsGroup is used to provide the collection of
   aggregated statistical measurements for the configured report
   intervals.  The tpmAggregateReportsGroup consists of the
   tpmAggrReportCntrlTable and the tpmAggrReportTable.

<span class="h4"><a class="selflink" id="section-2.3.3" href="#section-2.3.3">2.3.3</a>.  The tpmCurrentReportsGroup</span>

   The tpmCurrentReportsGroup is used to provide the collection of
   uncompleted measurements for the current configured report for those
   transactions caught in progress.  A history of these transactions is
   also maintained once the current transaction has been completed.  The
   tpmCurrentReportsGroup consists of the tpmCurReportTable and the
   tpmCurReportSize object.






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<span class="h4"><a class="selflink" id="section-2.3.4" href="#section-2.3.4">2.3.4</a>.  The tpmExceptionReportsGroup</span>

   The tpmExceptionReportsGroup is used to link immediate notifications
   of transactions that exceed certain thresholds defined in the
   apmExceptionGroup [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].  This group reports the aggregated sub-
   application measurements for those applications exceeding thresholds.
   The tpmExceptionReportsGroup consists of the tpmExcpReportTable.

<span class="h3"><a class="selflink" id="section-2.4" href="#section-2.4">2.4</a>.  Statistics for Aggregation of Data: Conventions</span>

   In order to measure the performance of traffic flows in a network,
   the proper analysis of a set of statistics is required.  Because a
   large majority of the statistics have a basis of time, the use of a
   simple statistical model is feasible.  Therefore, the MIB definitions
   within this document all use a basic set of statistical computed
   values to assist in further analysis by a management application.

   The remaining subsections in this section detail the common
   structured features the are applied to the performance metrics in the
   statistical format described above.  The tpmMetricsDefTable
   (discussed below) describes the set of metrics supported in this MIB
   module.

<span class="h3"><a class="selflink" id="section-2.5" href="#section-2.5">2.5</a>.  Relationship to the Remote Monitoring MIB</span>

   This document describes the implementation of an additional MIB for
   the support of performance-related metrics within the framework of
   the RMON2-MIB [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>].  The objects and table defined in this MIB
   module are an extension to the existing framework for the support of
   both Client/Server and Server push-related applications and services.

<span class="h3"><a class="selflink" id="section-2.6" href="#section-2.6">2.6</a>.  Relationship to RMON2-MIB Protocol Identifier Reference</span>

   This document uses the Protocol Identifiers outlined in the current
   Protocol Identifier Reference document, <a href="./rfc2895">RFC 2895</a> [<a href="./rfc2895" title="&quot;Remote Network Monitoring MIB Protocol Identifiers&quot;">RFC2895</a>].  The
   protocol index values throughout the document are a direct reference
   to the same relationship that exists between the RMON2-MIB [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>]
   and the Protocol Identifier Reference document, <a href="./rfc2895">RFC 2895</a> [<a href="./rfc2895" title="&quot;Remote Network Monitoring MIB Protocol Identifiers&quot;">RFC2895</a>].
   An important extension of the Protocol Identification to application-
   level verbs is found in <a href="./rfc3395">RFC 3395</a> [<a href="./rfc3395" title="&quot;Remote Network Monitoring MIB Protocol Identifiers Reference Extensions&quot;">RFC3395</a>].

<span class="h3"><a class="selflink" id="section-2.7" href="#section-2.7">2.7</a>.  Relationship to Standards-Based Performance Metrics</span>

   This document uses the tpmMetricsDefTable to describe the metrics
   supported by an instance of the TPM-MIB.  The performance metric
   index values throughout the document are a direct reference to the





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   metrics defined in that table.  The table defines metrics by directly
   referencing other standards that provide definitive descriptions of
   the metric.

<span class="h3"><a class="selflink" id="section-2.8" href="#section-2.8">2.8</a>.  Relationship to Application Performance Measurement MIB</span>

   This document uses the apmReportControlIndex, appLocalIndex, and
   apmReportIndex, as outlined in the current Application Performance
   Measurement MIB [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].  These objects are used to create a
   reference link for the purpose of reporting transaction flow details
   on application-level measurements.  As such, the TPM-MIB is designed
   to provide a drill-down extension to the APM-MIB.  Further, it draws
   heavily on the ideas and designs laid out in the APM-MIB.

<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>.  Statistics Perspective</span>

   When dealing with time-based measurements on application data
   packets, ideally all the timestamps and related data could be stored
   and forwarded for later analysis.  However, when faced with thousands
   of conversations per second on ever-faster networks, storing all the
   data, even if compressed, would take too much processing, memory, and
   manager download time to be practical.

   It is important to note that in dealing with network data we will be
   dealing with statistical populations and not samples.  Statistics
   books deal with both because the math is similar.  In collecting
   agent data, a population (i.e., all the data) must be processed.

   Because of the nature of application protocols, just sampling some of
   the packets will not give good results.  Missing just one critical
   packet, such as one that specified an ephemeral port on which data
   will be transmitted or what application will be run, can cause much
   valid data to be lost.

   The time-based measurements the agent collects will come from
   examining the entire group of data, i.e., the population.  The
   population will be finite.  The agent will seek only to provide
   information that will describe the actual data.  Analysis of that
   data will be left to the management station.

   The simplest form of representing a group of data is by frequency
   distributions, i.e., buckets.  Statistics provides a great many ways
   of analyzing this type of data, and there are some rules in creating
   the buckets.  First, the range needs to be known.  Second, a bucket
   size needs to be determined.  Fixed bucket sizes are best, although
   variable may be used if needed.  However, the statistics texts tend
   only to refer to operations of fixed-size buckets.  This method of
   describing data is expensive for an agent to implement.  First, the



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   agent must process a great amount of data at a time.  Storing the
   data, determining the range, locating the buckets, and then filling
   in the data after the fact takes a fair amount of storage and time.
   Fixing the range and bucket sizes in the beginning can be
   problematic, as the agent may have to adjust the values for each of
   the applications it collects data on.  Such numbers can be in the
   thousands.  Additional complexity arises in adding new protocols and
   even in describing the buckets themselves to the management
   application.  This is the approach taken in the APM-MIB.

   A complimentary approach is to provide frequency distribution
   statistics.  They describe aggregation such as mean and standard
   deviation that can be obtained by summation functions on the
   individual data elements in a population.  Analysis of the data
   described by these functions has been thoroughly studied, and
   interpretation of these values is available to anyone with an
   introduction to statistics.  In fact, frequency distributions are
   routinely analyzed to generate these varied numbers, which are then
   used for further analysis.  Note that frequency distributions, by
   their very nature, provide an exact characterization of the data.
   Whereas buckets will introduce error factors that are not present
   with direct analysis by summation-type formulas.  Because the TPM-MIB
   provides a drill-down capability to the APM MIB, it has to measure
   and store much more information than the APM-MIB.  For this reason,
   and in order to complement the APM-MIB, the TPM-MIB relies on
   statistical descriptions rather than a bucket description of the
   measurement data.

   The agent will provide data that can be used to calculate the most
   basic and useful statistical aggregates.  The agent will not perform
   the calculations and will not provide the statistical measurement
   directly.  There are several reasons why this is not desired.  The
   first is that finding the final measurement can be expensive in terms
   of computation and representation.  There are divisions and square
   roots, and the measurements are expressed as floating point values.
   The second is that by providing the variables to the statistical
   functions, those variables are scalable.  It is possible to combine
   smaller intervals into larger ones.

   An example is the arithmetic mean or average.  This is the sum of the
   data divided by the number of data elements.  The agent will provide
   the sum of the x and the number of elements N.  The management
   station can perform the division to obtain the average.  Given two
   samples, they can be combined by adding the sum of the x's and by
   adding the number of elements to get a combined sum and number of
   elements.  The average formula then works just the same.  Also, the
   sum of the x and the number of element variables are used in
   calculating other statistical measurement values.



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<span class="h3"><a class="selflink" id="section-3.1" href="#section-3.1">3.1</a>.  Statistics Structure</span>

   The data statistical elements, datum, of the metric have been chosen
   to maximize the amount of data available while minimizing the amount
   of memory needed to store the statistic and minimizing the CPU
   processing requirement needed to generate the statistic.

   The statistic data structure contains five unsigned integer datum.

       N        count of the number of data points for the metric
       S(X)     sum of all the data point values for the metric
       S(X2)    sum of all the data point values squared for the metric
       Xmax     maximum data point value for the metric
       Xmin     minimum data point value for the metric
       S(I*X)   sum of the data points multiplied by their order, i.e.,
                = SUM from i=1 to N { i*X sub i}

   A performance metric is used to describe events over a time interval.
   The measurement points can be processed immediately into the
   statistic and do not have to be stored for later processing.  For
   example, to count the number of events in a time interval, it is
   sufficient to increment a counter for each event.  It is not
   necessary to cache all the events and then to count them at the end
   of the interval.  The statistic is also designed to be easily
   scalable in terms of combining adjacent intervals.  For example, if
   an agent created a specific statistic every 30 seconds and a user
   table interval was set to 60 seconds, the 60-second statistic could
   be obtained by combining the two 30-second statistics.  The following
   rules will be applied when combining adjacent statistics.

       N         S(N)
       S(X)      S(S(X))
       S(X2)     S(S(X2))
       Xmax      MAX(Xmax)
       Xmin      MIN(Xmin)
       S(I*X)    S(I*X) + N*S(X) +S(I*X)
                 where the last two terms refer to the
                 statistics from the later 30 second period
                 and N is the count from the former 30 second
                 period.

   This structure gives a generic framework upon which the actual
   performance statistics will be defined.  Each specific statistical
   definition must address the specific significance, if any, given to
   each metric datum.  While a specific metric definition should try to
   conform to the generic framework, it is acceptable for a metric datum
   to not be used, and to have no meaning, for a specific metric.  In
   such cases the datum will default to a 0 value.



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<span class="grey"><a href="./rfc4150">RFC 4150</a>                        TPM-MIB                      August 2005</span>


<span class="h3"><a class="selflink" id="section-3.2" href="#section-3.2">3.2</a>.  Statistics Analysis</span>

   The actual meaning of a specific statistical datum is determined by
   the definition of the specific statistic.  The following is a
   discussion of the operations and observations that can be performed
   on a generic metric.  This means that the following may or may not
   apply and/or have meaning when applied to any specific metric.

   The following observations and analysis techniques are not all
   inclusive.  Rather these are the ones we have come up with at the
   time of writing this document.

       + Number.

       + Frequency.

       + The time interval is that specified in the control table.  It
         is not a metric datum, but it is associated with the metric
         sample.

       + Maximum

       + Minimum

       + Range

       + Arithmetic Mean

       + Root Mean Square

       + Variance

       + Standard Deviation

       + Slope of a least-squares line

   These are accessible from the statistical datum provided by this MIB
   module.

<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>.  Definitions</span>

   --
   -- RMON2-MIB extensions for the monitoring metrics related to the
   -- performance of transporting traffic in networks.
   --
   --    TPM Metric Collection
   --        * Application-to-Protocol transaction linkage
   --        * Metric-to-Protocol linkage



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   --        * Metric study control
   --        * Metrics for Client/Server Conversations
   --

   TPM-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       MODULE-IDENTITY, OBJECT-TYPE,
       Counter32, Unsigned32         FROM SNMPv2-SMI    --[<a href="./rfc2578" title="&quot;Structure of Management Information Version 2 (SMIv2)&quot;">RFC2578</a>]

       MODULE-COMPLIANCE,
       OBJECT-GROUP                  FROM SNMPv2-CONF   --[<a href="./rfc2580" title="&quot;Conformance Statements for SMIv2&quot;">RFC2580</a>]

       SnmpAdminString               FROM SNMP-FRAMEWORK-MIB --[<a href="./rfc3411" title="&quot;An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks&quot;">RFC3411</a>]

       RowStatus, TEXTUAL-CONVENTION, TimeStamp,
       StorageType                   FROM SNMPv2-TC  --[<a href="./rfc2579" title="&quot;Textual Conventions for SMIv2&quot;">RFC2579</a>]

       rmon, OwnerString             FROM RMON-MIB   --[<a href="./rfc2819" title="&quot;Remote Network Monitoring MIB&quot;">RFC2819</a>]

       protocolDirLocalIndex,
       ZeroBasedCounter32            FROM RMON2-MIB  --[<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>]

       ZeroBasedCounter64            FROM HCNUM-TC  --[<a href="./rfc2856" title="&quot;Textual Conventions for Additional High Capacity Data Types&quot;">RFC2856</a>]

       AppLocalIndex, TransactionAggregationType,
       RmonClientID, DataSourceOrZero,
       apmAppDirAppLocalIndex, apmExceptionIndex,
       apmReportGroup, apmExceptionGroup,
       apmAppDirResponsivenessType   FROM APM-MIB   --[<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>]

       SspmClockSource, SspmClockMaxSkew,
       SspmMicroSeconds              FROM SSPM-MIB;  --[<a href="./rfc4149" title="&quot;Definition of Managed Objects for Synthetic Sources for Performance Monitoring Algorithms&quot;">RFC4149</a>]

   -- Transaction Performance Monitoring MIB

   tpmMIB MODULE-IDENTITY
          LAST-UPDATED    "200507280000Z"  -- 28 July 2005
          ORGANIZATION    "IETF RMON MIB Working Group"
          CONTACT-INFO
            "E-mail: rmonmib@ietf.org
             Subscribe: rmonmib-request@ietf.org
                        w/ msg body: subscribe rmonmib

                     Russell Dietz
                     Hifn, Inc.
             Postal: 750 University Ave
                     Los Gatos, CA 95032-7695



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<span class="grey"><a href="./rfc4150">RFC 4150</a>                        TPM-MIB                      August 2005</span>


                     USA
                Tel: +1 408 399-3623
                Fax: +1 408 399-3501
             E-mail: rdietz@hifn.com

                     Robert G. Cole
                     Johns Hopkins University Applied Physics Laboratory
             Postal: MP2-170
                     11100 Johns Hopkins Road
                     Laurel, MD 20723-6099
                     USA
                Tel: +1 443 778-6951
             E-mail: robert.cole@jhuapl.edu"
          DESCRIPTION
             "This module defines extensions to the RMON2-MIB module
             for the collection of Performance Metrics related to
             application traffic in a network.  In particular,
             it describes managed objects used for monitoring
             selectable performance metrics and statistics
             derived from the monitoring of network packets and
             sub-application level transactions.

             In order to maintain the RMON 'look-and-feel', some of
             the text from the RMON2 [<a href="./rfc2021" title="&quot;Remote Network Monitoring Management Information Base Version 2 using SMIv2&quot;">RFC2021</a>] and HC-RMON [<a href="./rfc3273" title="&quot;Remote Network Monitoring Management Information Base for High Capacity Networks&quot;">RFC3273</a>]
             MIBs by Steve Waldbusser have been used in this MIB module.

             Copyright (C) The Internet Society (2005).  This version of
             this MIB module is part of <a href="./rfc4150">RFC 4150</a>; see the RFC itself for
             full legal notices."

          REVISION        "200507280000Z"   -- 28 July 2005
          DESCRIPTION
              "The original version of this MIB module,
              published as <a href="./rfc4150">RFC 4150</a>."
          ::= { rmon 30 }

   --
   -- Object Identifier Assignments
   --

   tpmCapabilities         OBJECT IDENTIFIER ::= { tpmMIB 1 }
   tpmReports              OBJECT IDENTIFIER ::= { tpmMIB 2 }
   tpmConformance          OBJECT IDENTIFIER ::= { tpmMIB 3 }

   -- tpmAggrReportCntrlTable OBJECT IDENTIFIER ::= { tpmReports 1 }
   -- tpmAggrReportTable      OBJECT IDENTIFIER ::= { tpmReports 2 }
   -- tpmCurReportTable       OBJECT IDENTIFIER ::= { tpmReports 3 }
   -- tpmCurReportSize        OBJECT IDENTIFIER ::= { tpmReports 4 }



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   -- tpmExcpReportTable      OBJECT IDENTIFIER ::= { tpmReports 5 }

   --
   -- Textual Conventions
   --

   TpmTransactionMetricIndex ::= TEXTUAL-CONVENTION
       DISPLAY-HINT "d"
       STATUS       current
       DESCRIPTION
           "An index used to identify an entry in the
           tpmTransMetricDir table uniquely.  Each such entry defines
           the protocol transaction and metric instance to be
           monitored for a specific application."
       SYNTAX       Unsigned32 (1..65535)

   TpmMetricDefID ::= TEXTUAL-CONVENTION
       DISPLAY-HINT "d"
       STATUS       current
       DESCRIPTION
           "An index that identifies through reference to a specific
           performance metrics.  The metrics are referenced
           through their type (connect, delay, loss, etc.), their
           directional characteristics (one-way, round trip, etc.),
           their name, and their reference to a documented definition."
       SYNTAX       Unsigned32 (1..2147483647)

   --
   -- The tpmCapabilitiesGroup
   --

   tpmClockResolution OBJECT-TYPE
       SYNTAX      SspmMicroSeconds
       MAX-ACCESS  read-only
       STATUS      current
       -- UNITS       Microseconds
       DESCRIPTION
           "A read-only variable indicating the resolution
            of the measurements possible by this device."
       ::= { tpmCapabilities 1 }

   tpmClockMaxSkew OBJECT-TYPE
       SYNTAX      SspmClockMaxSkew
       MAX-ACCESS  read-only
       STATUS      current
       -- UNITS       Seconds
       DESCRIPTION
           "A read-only variable indicating the maximum



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            offset error due to skew of the local clock
            over the time interval 86400 seconds, in seconds."
       ::= { tpmCapabilities 2 }

   tpmClockSource OBJECT-TYPE
       SYNTAX      SspmClockSource
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "A read-only variable indicating the source of the clock.
            This is provided to allow a user to determine how accurate
            the timing mechanism is compared with other devices."
       ::= { tpmCapabilities 3 }

   tpmTransMetricDirLastChange OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime at the time the
           tpmTransMetricDirTable was last modified, through
           modifications of the tpmTransMetricDirConfig object."
       ::= { tpmCapabilities 4 }

   tpmTransMetricDirTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmTransMetricDirEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table is used to describe and link sets of
           performance metrics and protocols to an entry in
           the application directory.  This table, with the
           tpmMetricDefTable, describes the capability of
           the agent to collection sub-application level
           data related to each entry in the
           apmAppDirectoryTable.

           This table lists the protocol transactions and their
           corresponding performance metrics that this agent
           has the capability to compute and collect, for the specified
           application.  There is one entry in this table for each such
           application, protocol transaction, and metric combination
           supported by this agent.  The entries in this
           table represent the metrics that are collected for each
           protocol transaction that comprise the application.
           The agent should boot up with this table pre-configured
           with those combinations of applications, protocol
           transactions, and metrics that it knows about and wishes to



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           monitor.  Implementations must populate the table with all
           possible application, protocol transaction, and metric
           combinations and have the default configuration objects
           set to supportedOff(2).  This table does not support the
           creation of new combinations by the management application.

           The deletion of an entry in the apmAppDirectoryTable will
           cause the removal of entries from this table.  These entries
           must be removed because the appLocalIndex value will no
           longer be visible in the apmAppDirectoryTable.  When an entry
           is created in the apmAppDirectoryTable and the agent has the
           ability to support metrics for these protocol transactions,
           the appropriate entries must be made in the
           tpmTransMetricDefTable."
       ::= { tpmCapabilities 5 }

   tpmTransMetricDirEntry OBJECT-TYPE
       SYNTAX      TpmTransMetricDirEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the tpmTransMetricDirTable.

           An example of the indexing of this entry is
           tpmTransMetricDirConfig.5.2  where 5 is the
           value of a valid and visible appLocalIndex object
           in the appLocalDir table.  The entries describe
           the transaction and metric pairs monitored for this
           application.  The tpmTransMetricProtocolIndex
           identifies the protocol transaction and the
           tpmMetricDefIndex describes the metric monitored."
       INDEX { tpmTransMetricAppLocalIndex, -- Application Index
               tpmTransMetricIndex    -- (Protocol,Metric) Index
             }
       ::= { tpmTransMetricDirTable 1 }

   TpmTransMetricDirEntry ::= SEQUENCE {
       tpmTransMetricAppLocalIndex   AppLocalIndex,
       tpmTransMetricIndex           TpmTransactionMetricIndex,
       tpmTransMetricProtocolIndex   Unsigned32,
       tpmTransMetricMetricIndex     Unsigned32,
       tpmTransMetricDirConfig       INTEGER
   }

   tpmTransMetricAppLocalIndex OBJECT-TYPE
       SYNTAX      AppLocalIndex
       MAX-ACCESS  not-accessible
       STATUS      current



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       DESCRIPTION
           "An index used to uniquely identify the application
           with which the entries in the tpmTransMetricDir
           table are associated."
       ::= { tpmTransMetricDirEntry 1 }

   tpmTransMetricIndex OBJECT-TYPE
       SYNTAX      TpmTransactionMetricIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "An index used to uniquely identify an entry in the
           tpmTransMetricDir table.  Each such entry defines
           protocol transaction and metric instance
           to be monitored for a specific application."
       ::= { tpmTransMetricDirEntry 2 }

   tpmTransMetricProtocolIndex OBJECT-TYPE
       SYNTAX      Unsigned32 (1..2147483647)
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The protocolDirLocalIndex of the particular transaction to
           be analyzed when computing and generating the selected metric
           for a specific application."
       ::= { tpmTransMetricDirEntry 3 }

   tpmTransMetricMetricIndex OBJECT-TYPE
       SYNTAX      Unsigned32 (1..2147483647)
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The tpmMetricDefinitionID of the particular metric to be
           generated."
       ::= { tpmTransMetricDirEntry 4 }

   tpmTransMetricDirConfig OBJECT-TYPE
       SYNTAX      INTEGER {
                       notSupported(1),
                       supportedOff(2),
                       supportedOn(3)
                   }
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "This object describes and configures the probe's support
           for this performance metric in relationship to the
           specified transaction and application.  The agent



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           creates entries in this table for all metric
           and transaction combinations that it can generate.  Because
           the probe will only populate this table with supported
           entries, and the table cannot have entries added, the
           notSupported(1) setting is only used to signify that other
           configuration parameters are causing the agent currently not
           to support the generation and collection of this metric for
           the specified protocol and application.  Also, the status of
           this object will not change to notSupported(1) due to a
           change to supportedOff(2) in the tpmMetricDir table.

           If the value of this object is notSupported(1), the probe
           will not perform computations for this performance metric and
           transaction combination and will not allow this object to be
           changed to any other value.  If the value of this object is
           supportedOn(3), the probe supports computations for this
           performance metric and protocol and is configured to perform
           the computations for this performance metric and protocol
           combination for the application for all interfaces.
           If the value of this object is supportedOff(2), the
           probe supports computations for this performance
           metric for the specified protocol, but is configured
           not to perform the computations for this performance
           metric and protocol for the application for any
           interfaces.  Whenever this value changes from
           supportedOn(3) to supportedOff(2), the probe shall
           cause the deletion of all entries in the tpmReportGroup
           tables, for all appropriate studies configured in the
           tpmAggrReportCntrlTable.

           The value of this object must persist across reboots."
       ::= { tpmTransMetricDirEntry 5 }

   --
   -- TPM Metric Definitions Table
   --

   tpmMetricDefTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmMetricDefEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The tpmMetricDefTable describes the metrics
           available to the TPM-MIB.  The tpmMetricDefTable
           can define metrics by referencing existing IETF,
           ITU, and other standards organizations' documents,
           including enterprise-specific documents.




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           Examples of appropriate references include the
           ITU-T Recommendation Y.1540 [<a href="#ref-Y.1540" title="&quot;IP Data Transport Service - IP packet transfer performance metrics&quot;">Y.1540</a>] on IP
           packet transfer performance metrics and the
           IETF documents from the IPPM WG; e.g., <a href="./rfc2681">RFC2681</a>
           on the round trip delay metric [<a href="./rfc2681" title="&quot;A Round-Trip Delay Metric for IPPM&quot;">RFC2681</a>] or
           <a href="./rfc3393">RFC3393</a> on the delay variation metric [<a href="./rfc3393" title="&quot;IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)&quot;">RFC3393</a>].
           Other examples include <a href="./rfc2679">RFC2679</a> [<a href="./rfc2679" title="&quot;A One-way Delay Metric for IPPM&quot;">RFC2679</a>], <a href="./rfc2680">RFC2680</a>
           [<a href="./rfc2680" title="&quot;A One-Way Packet Loss Metric for IPPM&quot;">RFC2680</a>], and <a href="./rfc3432">RFC3432</a> [<a href="./rfc3432" title="&quot;Network Performance Measurement with Periodic Streams&quot;">RFC3432</a>].  Although no
           specific metric is mandatory, implementations
           should, at a minimum, support a round-trip delay
           and a round-trip loss metric.

           This table contains one row per metric supported by this
           agent, and it should be populated during system
           initialization."
       ::= { tpmCapabilities 6 }

   tpmMetricDefEntry OBJECT-TYPE
       SYNTAX      TpmMetricDefEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Information about a particular metric."
       INDEX   { tpmMetricDefinitionID }
       ::= { tpmMetricDefTable 1 }

   TpmMetricDefEntry ::= SEQUENCE {
         tpmMetricDefinitionID              TpmMetricDefID,
         tpmMetricDefType                   INTEGER,
         tpmMetricDefDirType                INTEGER,
         tpmMetricDefName                   SnmpAdminString,
         tpmMetricDefReference              SnmpAdminString,
         tpmMetricDefGlobalID               OBJECT IDENTIFIER
   }

   tpmMetricDefinitionID     OBJECT-TYPE
       SYNTAX      TpmMetricDefID
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The index for this entry.  This object identifies
            the particular metric in this MIB module."
       ::= { tpmMetricDefEntry 1 }

   tpmMetricDefType   OBJECT-TYPE
       SYNTAX      INTEGER  {
                             other(1),
                             connectMetric(2),



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                             delayMetric(3),
                             lossMetric(4)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The basic type of metric indicated by this entry.

           The value 'other(1)' indicates that this metric cannot be
           characterized by any of the remaining enumerations specified
           for this object.

           The value 'connectMetric(2)' indicates that this metric
           measures connectivity characteristics.

           The value 'delayMetric(3)' indicates that this metric
           measures delay characteristics.

           The value 'lossMetric(4)' indicates that this metric
           measures loss characteristics."
       ::= { tpmMetricDefEntry 2 }

   tpmMetricDefDirType   OBJECT-TYPE
       SYNTAX      INTEGER  {
                             oneWay(1),
                             twoWay(2),
                             multiWay(3)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The directional characteristics of the this metric.

           The value 'oneWay(1)' indicates that this metric is measured
           with some sort of unidirectional test.

           The value 'twoWay(2)' indicates that this metric is measured
           with some sort of bidirectional test.

           The value 'multiWay(3)' indicates that this metric is
           measured with some combination of unidirectional and/or
           bidirectional tests."
       ::= { tpmMetricDefEntry 3 }

   tpmMetricDefName OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-only
       STATUS      current



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       DESCRIPTION
           "The textual name of this metric.  For example, if
           this tpmMetricDefEntry identified the IPPM metric for
           round trip delay, then this object should contain
           the value, e.g., 'Type-P-Round-Trip-Delay'."
       ::= { tpmMetricDefEntry 4 }

   tpmMetricDefReference OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "This object contains a reference to the document that
           defines this metric.  If this document is available online
           via electronic download, then a de-referencable URL
           should be specified in this object.  The implementation
           must support an HTTP URL type and may support additional
           types of de-referencable URLs such as an FTP type.

           For example, if this tpmMetricDefName identified the IPPM
           metric 'Type-P-Round-Trip-Delay', then this object should
           contain the value, e.g.,
           'http://www.ietf.org/rfc/rfc2681.txt'."
       ::= { tpmMetricDefEntry 5 }

   tpmMetricDefGlobalID OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "This object contains a reference to the Object ID
           in a metrics registration MIB being developed
           in the IPPM WG at the IETF; e.g., the
           IPPM-REGISTRY-MIB [<a href="./rfc4148" title="&quot;IP Performance Metrics (IPPM) Metrics Registry&quot;">RFC4148</a>], which defines the metric.
           In the event that this metric has no corresponding
           object identifier (OID) or until the IPPM-REGISTRY-MIB is
           defined, then the value should be set to 0.0 for none."
       ::= { tpmMetricDefEntry 6 }

   --
   -- The tpmAggregateReportsGroup
   --

   tpmAggrReportCntrlTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmAggrReportCntrlEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION



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           "The tpmAggrReportCntrlTable is the controlling entry
           that manages the population of studies in the Transport
           Aggregate Report for selected interfaces, metrics, and
           transaction protocols and applications.

           Note that this is not like the typical RMON
           controlTable and dataTable in which each entry creates
           its own data table.  Each entry in this table enables the
           creation of multiple data tables on a study basis.  For each
           interval, the study is updated in place, and the current
           data content of the table becomes invalid.

           The control table entries are persistent across
           system reboots."
       ::= { tpmReports 1 }

   tpmAggrReportCntrlEntry OBJECT-TYPE
       SYNTAX      TpmAggrReportCntrlEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the tpmAggrReportCntrlTable.

           An example of the indexing of this entry is
           tpmAggrReportCntrlDataSource.1"
       INDEX { tpmAggrReportCntrlIndex }
       ::= { tpmAggrReportCntrlTable 1 }

   TpmAggrReportCntrlEntry ::= SEQUENCE {
       tpmAggrReportCntrlIndex               Unsigned32,
       tpmAggrReportCntrlApmCntrlIndex       Unsigned32,
       tpmAggrReportCntrlDataSource          DataSourceOrZero,
       tpmAggrReportCntrlAggrType            TransactionAggregationType,
       tpmAggrReportCntrlInterval            Unsigned32,
       tpmAggrReportCntrlReqSize             Unsigned32,
       tpmAggrReportCntrlGrantedSize         Unsigned32,
       tpmAggrReportCntrlReqReports          Unsigned32,
       tpmAggrReportCntrlGrantedReports      Unsigned32,
       tpmAggrReportCntrlStartTime           TimeStamp,
       tpmAggrReportCntrlReportNumber        Unsigned32,
       tpmAggrReportCntrlInsertsDenied       Counter32,
       tpmAggrReportCntrlDroppedFrames       Counter32,
       tpmAggrReportCntrlOwner               OwnerString,
       tpmAggrReportCntrlStorageType         StorageType,
       tpmAggrReportCntrlStatus              RowStatus
   }

   tpmAggrReportCntrlIndex OBJECT-TYPE



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       SYNTAX      Unsigned32 (1..65535)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "An index that uniquely identifies an entry in the
           tpmAggrReportCntrlTable.  Each such entry defines a unique
           report whose results are placed in the tpmAggrReportTable on
           behalf of this tpmAggrReportCntrlEntry."
       ::= { tpmAggrReportCntrlEntry 1 }

   tpmAggrReportCntrlApmCntrlIndex OBJECT-TYPE
       SYNTAX      Unsigned32 (0..65535)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "This index associates this TpmAggrReportCntrlEntry directly
           with an existing ApmReportControlEntry.  This link is used
           to synchronize reports in the associated tpmAggrReportTable.

           A value of 0 (zero) enables an independent control table that
           will report entries to tpmAggrReportTable based only on the
           other objects in this table.

           A non-zero value indicates that this row is defined through
           the APM-MIB.  In this case, all row objects are set to their
           corresponding values in the APM-MIB.  In the event that a
           SET is issued to a row object, while the value of the
           tpmAggrReportCntrlApmCntrlIndex is non-zero, the agent
           MUST respond as if the object of the SET command
           had MAX-ACCESS of read-only.

           This object may not be modified if the associated
           tpmAggrReportCntrlStatus object is equal to active(1)."
       DEFVAL { 0 }
       ::= { tpmAggrReportCntrlEntry 2 }

   tpmAggrReportCntrlDataSource OBJECT-TYPE
       SYNTAX      DataSourceOrZero
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The source of the data for TPM Reports generated on
           behalf of this tpmAggrReportCntrlEntry.

           If the measurement is being performed by a probe, this should
           be set to the interface or port where data was received for
           analysis.  If the measurement isn't being performed by a
           probe this should be set to the primary interface over which



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           the measurement is being performed.  If the measurement isn't
           being performed by a probe and there is no primary interface,
           or if this information isn't known, this object should be
           set to 0.0.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object is set to the corresponding
           apmReportControlTable object in the APM-MIB [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].

           This object may not be modified if the associated
           tpmAggrReportCntrlStatus object is equal to active(1)."
       ::= { tpmAggrReportCntrlEntry 3 }

   tpmAggrReportCntrlAggrType OBJECT-TYPE
       SYNTAX      TransactionAggregationType
                -- INTEGER {
                --    flows(1),
                --    clients(2),
                --    servers(3),
                --    applications(4)
                -- }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The type of aggregation being performed for this set of
           reports.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlAggregationType object.

           This object may not be modified if the associated
           tpmAggrReportCntrlStatus object is equal to active(1)."
       ::= { tpmAggrReportCntrlEntry 4 }

   tpmAggrReportCntrlInterval OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "Seconds"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "The interval in seconds over which data is accumulated before
           being aggregated into a report in the tpmAggrReportTable.
           All reports with the same tpmAggrReportCntrlIndex will be
           based on the same interval.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value



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           of the apmReportControlControlInterval object.

           This object may not be modified if the associated
           tpmReportAggregateCntrlStatus object is equal to active(1)."
       DEFVAL { 3600 }
       ::= { tpmAggrReportCntrlEntry 5 }

   tpmAggrReportCntrlReqSize OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The maximum number of Client and Server combination
           entries requested for this report.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlRequestedSize object.

           When this object is created or modified, the probe
           should set tpmReportCntrlGrantedSize as closely to this
           object as is possible for the particular probe
           implementation and available resources.

           It is important to note that this value is the number of
           requested entries in the tpmAggrReportTable only.  Because
           the probe can derive this table from the apmReportTable, the
           probe must make sure that sufficient resources exist to
           support the creation of the apmReportTable, plus any
           additional resources required to convert or support this
           table.

           This object may not be modified if the associated
           tpmReportAggregateCntrlStatus object is equal to active(1)."
       ::= { tpmAggrReportCntrlEntry 6 }

   tpmAggrReportCntrlGrantedSize OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum number of performance entries in this report.

           When the associated tpmAggrReportCntrlReqSize object is
           created or modified, the probe should set this
           object as closely to the requested value as is
           possible for the particular implementation and
           available resources.  The probe must not lower this



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           value except as a result of a set to the associated
           tpmAggrReportCntrlReqSize object.

           It is an implementation-specific matter as to whether
           zero-valued entries are available."
       ::= { tpmAggrReportCntrlEntry 7 }

   tpmAggrReportCntrlReqReports OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The number of saved reports requested to be allocated on
           behalf of this entry.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlcwRequestedReportsDataSource object.

           This object may not be modified if the associated
           tpmReportAggregateCntrlStatus object is equal to active(1)."
       ::= { tpmAggrReportCntrlEntry 8 }

   tpmAggrReportCntrlGrantedReports OBJECT-TYPE
       SYNTAX      Unsigned32 (0..65535)
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of saved reports the agent has allocated based
           on the requested amount in tpmAggrReportCntrlReqReports.
           Because each report can have many entries, the total number
           of entries allocated will be this number multiplied by the
           value of tpmAggrReportCntrlGrantedSize, or by 1 if that
           object doesn't exist.

           When the associated tpmAggrReportCntrlReqReports object is
           created or modified, the agent should set this object as
           closely to the requested value as is possible for the
           particular implementation and available resources.  When
           considering available resources, the agent must consider its
           ability to allocate this many reports, each with the number
           of entries represented by tpmAggrReportCntrlGrantedSize, or
           by 1 if that object doesn't exist.

           Note that although the storage required for each report may
           fluctuate due to changing conditions, the agent must continue
           to have storage available to satisfy the full report size for
           all reports, when necessary.  Further, the agent must not



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           lower this value except as a result of a set to the
           associated tpmAggrReportCntrlReqSize object."
       ::= { tpmAggrReportCntrlEntry 9 }

   tpmAggrReportCntrlStartTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime when the system began processing the
           report in progress.  Note that the report in progress is not
           available.

           This object may be used by the management station to figure
           out the start time for all previous reports saved for this
           tpmAggrReportCntrlEntry, as reports are started at fixed
           intervals.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object is set to the corresponding
           apmReportControlTable object in the APM-MIB defined in
           the IETF's RMONMIB WG."
       ::= { tpmAggrReportCntrlEntry 10 }

   tpmAggrReportCntrlReportNumber OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of the report in progress.  When an
           tpmAggrReportCntrlEntry is activated, the first report will
           be numbered zero.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlReportNumber object."
       ::= { tpmAggrReportCntrlEntry 11 }

   tpmAggrReportCntrlInsertsDenied OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of attempts to add an entry to reports for
           this TpmAggrReportCntrlEntry that failed because the number
           of entries would have exceeded tpmAggrReportCntrlGrantedSize.

           This number is valuable in determining if enough entries have



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           been allocated for reports in light of fluctuating network
           usage.  Note that an entry that is denied will often be
           attempted again, so this number will not predict the exact
           number of additional entries needed, but it can be used to
           understand the relative magnitude of the problem.

           Also note that there is no ordering specified for the entries
           in the report; thus, there are no rules for which entries
           will be omitted when not enough entries are available.  As a
           consequence, the agent is not required to delete 'least
           valuable' entries first."
       ::= { tpmAggrReportCntrlEntry 12 }

   tpmAggrReportCntrlDroppedFrames OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "The total number of frames that were received by the agent
           and therefore not accounted for in the *StatsDropEvents, but
           for which the agent chose not to count for this entry for
           whatever reason.  Most often, this event occurs when the
           agent is out of some resources and decides to shed load from
           this collection.

           This count does not include packets that were not counted
           because they had MAC-layer errors.

           Note that if the alMatrixTables are not implemented or are
           inactive because no protocols are enabled in the protocol
           directory, this value should be 0.

           Note that, unlike the dropEvents counter, this number is the
           exact number of frames dropped."
       ::= { tpmAggrReportCntrlEntry 13 }

   tpmAggrReportCntrlOwner OBJECT-TYPE
       SYNTAX      OwnerString
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The entity that configured this entry and is
           therefore using the resources assigned to it.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlReportNumber object.




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           This object may not be modified if the associated
           tpmReportAggregateCntrlStatus object is equal to active(1)."
       ::= { tpmAggrReportCntrlEntry 14 }

   tpmAggrReportCntrlStorageType OBJECT-TYPE
       SYNTAX      StorageType
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The storage type of this tpmAggrReportCntrlEntry.  If the
           value of this object is 'permanent', no objects in this row
           need to be writable."

       ::= { tpmAggrReportCntrlEntry 15 }

   tpmAggrReportCntrlStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this performance control entry.

           An entry may not exist in the active state unless each
           object in the entry has an appropriate value.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object should be set by the agent to the value
           of the apmReportControlReportNumber object.

           Once this object is set to active(1), no objects in the
           tpmAggrReportCntrlTable can be changed.

           If this object is not equal to active(1), all associated
           entries in the tpmAggrReportTable shall be deleted."
       ::= { tpmAggrReportCntrlEntry 16 }

   --
   -- Transport Aggregate Report Table
   --

   tpmAggrReportTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmAggrReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains transport performance metric
           studies for each of the control table entries in
           tpmAggrReportCntrlTable.  These studies are



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           provided based on the selections and parameters
           found for the entry in the
           tpmAggregateReportCntrlTable.

           The performance statistics are specified in the
           tpmTransMetricDirTable associated with the
           application in question and indexed by
           appLocalIndex and tpmTransMetricIndex."
       ::= { tpmReports 2 }

   tpmAggrReportEntry OBJECT-TYPE
       SYNTAX      TpmAggrReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the tpmAggrReportTable.

           The tpmAggrReportCntrlIndex value in the index identifies the
           tpmAggrReportCntrlEntry on whose behalf this entry was
           created.

           The tpmAggrReportIndex value in the index identifies which
           report (in the series of reports) this entry is a part of.

           The tpmAggrReportAppLocalIndex value in the index identifies
           the application protocol that is being reported.

           The tpmTransMetricIndex value in the index identifies
           the transaction protocol-metric pair for the traffic flows
           aggregated in this entry.

           The protocolDirLocalIndex value in the index identifies the
           network layer protocol of the tpmAggrReportServerAddress.
           When the associated tpmAggrReportCntrlAggrType value is equal
           to applications(4) or clients(2), this value will equal 0.

           The tpmAggrReportServerAddress value in the index identifies
           the network layer address of the server in traffic flows
           aggregated in this entry.

           The tpmAggrReportApmNameClientID value in the index
           identifies the client in traffic flows aggregated in this
           entry.  If the associated tpmAggrReportCntrlAggrType is equal
           to applications(4) or servers(3), then this object will be
           set to 0.

           An example of the indexing of this entry is
           tpmAggrReportStatN.3.15.34.262.18.4.128.2.6.7.3256521"



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       INDEX { tpmAggrReportCntrlIndex,
               tpmAggrReportIndex,
               tpmAggrReportAppLocalIndex,       -- Application Layer
               tpmAggrReportTransMetricIndex,    -- Metric and Protocol
               protocolDirLocalIndex,            -- Network Layer
               tpmAggrReportServerAddress,
               tpmAggrReportApmNameClientID
             }
       ::= { tpmAggrReportTable 1 }

   TpmAggrReportEntry ::= SEQUENCE {
       tpmAggrReportIndex                    Unsigned32,
       tpmAggrReportAppLocalIndex            AppLocalIndex,
       tpmAggrReportTransMetricIndex         TpmTransactionMetricIndex,
       tpmAggrReportServerAddress            OCTET STRING,
       tpmAggrReportApmNameClientID          RmonClientID,
       tpmAggrReportStatN                    ZeroBasedCounter32,
       tpmAggrReportOverflowStatN            ZeroBasedCounter32,
       tpmAggrReportHCStatN                  ZeroBasedCounter64,
       tpmAggrReportStatSumX                 ZeroBasedCounter32,
       tpmAggrReportOverflowStatSumX         ZeroBasedCounter32,
       tpmAggrReportHCStatSumX               ZeroBasedCounter64,
       tpmAggrReportStatMaximum              ZeroBasedCounter32,
       tpmAggrReportStatMinimum              ZeroBasedCounter32,
       tpmAggrReportStatSumSq                ZeroBasedCounter32,
       tpmAggrReportOverflowStatSumSq        ZeroBasedCounter32,
       tpmAggrReportHCStatSumSq              ZeroBasedCounter64,
       tpmAggrReportStatSumIX                ZeroBasedCounter32,
       tpmAggrReportOverflowStatSumIX        ZeroBasedCounter32,
       tpmAggrReportHCStatSumIX              ZeroBasedCounter64,
       tpmAggrReportStatSumIXSq              ZeroBasedCounter32,
       tpmAggrReportOverflowStatSumIXSq      ZeroBasedCounter32,
       tpmAggrReportHCStatSumIXSq            ZeroBasedCounter64
   }

   tpmAggrReportIndex  OBJECT-TYPE
       SYNTAX      Unsigned32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The value of tpmAggrReportCntrlNumber for the report to
           which this entry belongs."
       ::= { tpmAggrReportEntry 1 }

   tpmAggrReportAppLocalIndex  OBJECT-TYPE
       SYNTAX      AppLocalIndex
       MAX-ACCESS  not-accessible
       STATUS      current



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       DESCRIPTION
           "The common application of the transactions aggregated
           in this entry."
       ::= { tpmAggrReportEntry 2 }

   tpmAggrReportTransMetricIndex OBJECT-TYPE
       SYNTAX      TpmTransactionMetricIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A unique index that identifies the transaction and
           metric associated with the statistics reported here."
       ::= { tpmAggrReportEntry 3 }

   tpmAggrReportServerAddress OBJECT-TYPE
       SYNTAX      OCTET STRING (SIZE (0..108))
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The network layer address of the server host in this
           conversation.

           This is represented as an octet string with specific
           semantics and length as identified by the
           protocolDirLocalIndex component of the index.

           Because this object is an index variable, it is encoded in
           the index according to the index encoding rules.  For
           example, if the protocolDirLocalIndex indicates an
           encapsulation of IPv4, this object is encoded as a length
           octet of 4, followed by the 4 octets of the IPv4 address,
           in network byte order.

           If the associated tpmAggrReportCntrlAggrType is equal to
           application(4) or client(2), then this object will be a null
           string and will be encoded simply as a length octet of 0."
       ::= { tpmAggrReportEntry 4 }

   tpmAggrReportApmNameClientID OBJECT-TYPE
       SYNTAX      RmonClientID
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A unique ID assigned to the machine represented by this
           mapping.  This ID is assigned by the agent using an
           implementation-specific algorithm."
       ::= { tpmAggrReportEntry 5 }




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   tpmAggrReportStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The count of the total number of data points for the
           specified metric.  This number always represents the
           total size of the statistical datum analyzed.  Each
           metric specifies the exact meaning of this object.

           This value represents the results for one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmAggrReportEntry 6 }

   tpmAggrReportOverflowStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmAggrReportStatN counter has overflowed.  Note
           that this object will only be instantiated if the
           associated tpmAggrReportHCStatN object is also
           instantiated for a particular dataSource."
       ::= { tpmAggrReportEntry 7 }

   tpmAggrReportHCStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmAggrReportStatN.
           Note that this object will only be instantiated if the
           agent supports high-capacity monitoring for a particular
           dataSource."
       ::= { tpmAggrReportEntry 8 }

   tpmAggrReportStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The sum of all the data point values for the specified
           metric.  This number always represents the total values
           of the statistical datum analyzed.  Each metric
           specifies the exact meaning of this object.




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           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmAggrReportEntry 9 }

   tpmAggrReportOverflowStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmAggrReportStatSumX counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmAggrReportHCStatSumX object is also
           instantiated for a particular dataSource."
       ::= { tpmAggrReportEntry 10 }

   tpmAggrReportHCStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmAggrReportStatSumX.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmAggrReportEntry 11 }

   tpmAggrReportStatMaximum OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The single maximum data point value observed during the
           study period for the specified metric.  This number always
           represents the maximum value of any single statistical
           datum analyzed.  Each metric specifies the exact meaning
           of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmAggrReportEntry 12 }

   tpmAggrReportStatMinimum OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current



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       DESCRIPTION
           "The single minimum data point value observed during the
           study period for the specified metric.  This number always
           represents the minimum value of any single statistical
           datum analyzed.  Each metric specifies the exact meaning
           of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmAggrReportEntry 13 }

   tpmAggrReportStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The sum of all the squared data point values for the
           specified metric.  This number always represents the
           total of the squared values of the statistical datum
           analyzed.  Each metric specifies the exact meaning of
           this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmAggrReportEntry 14 }

   tpmAggrReportOverflowStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmAggrReportStatSumSq counter has overflowed.
           Note that this object will only  be instantiated if
           the associated tpmAggrReportHCStatSumSq object
           is also instantiated for a particular dataSource."
       ::= { tpmAggrReportEntry 15 }

   tpmAggrReportHCStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmAggrReportStatSumSq.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular



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           dataSource."
       ::= { tpmAggrReportEntry 16 }

   tpmAggrReportStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "For each interval, each data point is associated with a
           value I, I = 1..N where N is the number of data points;
           tpmAggrReportStatSumIX is the multiplication of the
           data point value with the current I.  This value
           along with the other statistics values allow the
           calculation of the slope of the least-squares line
           through the data points."
       ::= { tpmAggrReportEntry 17 }

   tpmAggrReportOverflowStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmAggrReportStatSumIX counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmAggrReportHCStatSumIX object is also
           instantiated for a particular dataSource."
       ::= { tpmAggrReportEntry 18 }

   tpmAggrReportHCStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmAggrReportStatSumIX.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmAggrReportEntry 19 }

   tpmAggrReportStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "For each interval, each data point is associated with a
           value I, I = 1..N where N is the number of data points;
           tpmAggrReportStatSumIXSq is the multiplication



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           of the data point value with the current I.
           This value along with the other statistics
           values allow the calculation of the slope of
           the least-squares line through the data points."
       ::= { tpmAggrReportEntry 20 }

   tpmAggrReportOverflowStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmAggrReportStatSumIXSq counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmAggrReportHCStatSumIXSq object is also
           instantiated for a particular dataSource."
       ::= { tpmAggrReportEntry 21 }

   tpmAggrReportHCStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmAggrReportStatSumIXSq.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmAggrReportEntry 22 }

   --
   -- The tpmCurrentReportsGroup
   --

   tpmCurReportTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmCurReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table will contain entries associated with an
           apmReportControlEntry that consitute a current 'snapshot'
           of the metrics being collected in association with
           a set of TPM-related application transactions.
           This table contains all sub-flow metrics for transactions
           that have been started but have not yet finished (i.e.,
           current) and a history of those that have finished (i.e.,
           completed).  It may not always be obvious from the context
           whether a transaction is currently in-progress or has
           been completed.  Therefore, the completion status of a



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           transaction is indicated by the value of
           the tpmCurReportCompletion object."
       ::= { tpmReports 3 }

   tpmCurReportEntry OBJECT-TYPE
       SYNTAX      TpmCurReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the tpmCurReportTable.

           The tpmAggrReportControlIndex value in the index identifies
           the tpmAggrReportCntrlEntry on whose behalf this entry was
           created.  The tpmCurReportAppLocalIndex value in the
           index identifies the application protocol that is being
           reported.  The protocolDirLocalIndex value in the
           index identifies the network layer protocol
           of the tpmAggrReportServerAddress.  When the associated
           tpmAggrReportCntrlAggrType value is
           equal to applications(4), this value will equal 0.
           The tpmCurReportServerAddress value in the
           index identifies the network layer address of the
           server in traffic flows aggregated in this entry.
           The tpmCurReportCurrentApmNameClientID value in the
           index identifies the network layer address of the
           client in traffic flows aggregated in this entry.
           The tpmCurReportCurrentMetricIndex value in the
           index identifies the transported application protocol
           of the traffic flows aggregated in this entry.

           Note that the order of protocolDirLocalIndex variables is
           the opposite of that in the RMON2 MIB (application.network
           instead of network.application); the report entries are
           sorted by application first, server second, and client third.
           The tpmCurReportCntrIndex value in the index identifies
           the tpmAggrReportCntrlEntry on whose behalf this entry was
           created.  The tpmCurReportMetricIndex value in the index
           identifies the metric and protocol of the
           tpmCurReportServerAddress, via the tpmTransMetricDir
           table.

           An example of the indexing of this table is
           tpmCurReportStatisticN.3.34.262.18.4.128.2.6.6.3256521.29667"
       INDEX { tpmAggrReportCntrlIndex,
               tpmCurReportAppLocalIndex,         -- Application Layer
               tpmCurReportTransMetricIndex,      -- Metric and Protocol
               protocolDirLocalIndex,             -- Network Layer
               tpmCurReportServerAddress,



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               tpmCurReportApmNameClientID,
               tpmCurReportApmTransactionID
             }
       ::= { tpmCurReportTable 1 }

   TpmCurReportEntry ::= SEQUENCE {
       tpmCurReportAppLocalIndex              AppLocalIndex,
       tpmCurReportTransMetricIndex           TpmTransactionMetricIndex,
       tpmCurReportServerAddress              OCTET STRING,
       tpmCurReportApmNameClientID            RmonClientID,
       tpmCurReportApmTransactionID           Unsigned32,
       tpmCurReportMetricValue                ZeroBasedCounter32,
       tpmCurReportCompletion                 INTEGER
   }

   tpmCurReportAppLocalIndex  OBJECT-TYPE
       SYNTAX      AppLocalIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The common application of the transactions reported
           in this entry."
       ::= { tpmCurReportEntry 1 }

   tpmCurReportTransMetricIndex OBJECT-TYPE
       SYNTAX      TpmTransactionMetricIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A unique index that identifies the transaction and
           metric associated with the statistics reported here."
       ::= { tpmCurReportEntry 2 }

   tpmCurReportServerAddress OBJECT-TYPE
       SYNTAX      OCTET STRING (SIZE (0..108))
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The network server address for this tpmCurReportEntry.

           This is represented as an octet string with
           specific semantics and length as identified
           by the protocolDirLocalIndex component of the index.

           For example, if the protocolDirLocalIndex indicates an
           encapsulation of IPv4, this object is encoded as a length
           octet of 4, followed by the 4 octets of the IPv4 address,
           in network byte order."



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       ::= { tpmCurReportEntry 3 }

   tpmCurReportApmNameClientID OBJECT-TYPE
       SYNTAX      RmonClientID
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A unique ID assigned to the machine represented by this
           mapping.  This ID is assigned by the agent using an
           implementation-specific algorithm."
       ::= { tpmCurReportEntry 4 }

   tpmCurReportApmTransactionID OBJECT-TYPE
       SYNTAX      Unsigned32 (0..4294967295)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A unique value for this transaction amongst other
           transactions sharing the same application,
           transaction-layer protocol and metric, and
           server and client addresses.  Implementations may choose to
           use the value of the client's source port, when possible.

           If the tpmAggrReportCntrlApmCntrlIndex is non-zero,
           then this object is set to the corresponding
           apmTransactionID object in the APM-MIB developed
           in the IETF's RMONMIB WG."
       ::= { tpmCurReportEntry 5 }

   tpmCurReportMetricValue OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current value of the metric being evaluated.
           For some transaction types this value may be 0, e.g.,
           the current round-trip time for a DNS query.  For
           other transaction types, this will represent the
           current value of a continuously measured metric, e.g.,
           the current throughput of an FTP transaction."
       ::= { tpmCurReportEntry 6 }

   tpmCurReportCompletion OBJECT-TYPE
       SYNTAX      INTEGER {
                       current(1),
                       completed(2)
                   }
       MAX-ACCESS  read-only



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       STATUS      current
       DESCRIPTION
           "The status of this transaction.  It is not always obvious
           from context whether a transaction is ongoing or
           completed.  E.g., an ftp-GET transaction may last several
           minutes or hours, and a value found in the
           tpmCurReportMetricValue object lists to observed throughput
           for the transaction up to this point in time.  The value
           of the tpmCurReportCompletion indicates whether the
           transaction has been completed."
       ::= { tpmCurReportEntry 7 }

   tpmCurReportSize OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "The maximum number of completed transactions desired to be
           retained in the tpmCurReportTable.  If the agent doesn't have
           enough resources to retain this many, it will retain as many
           as possible.  Regardless of this value, the agent must
           attempt to keep records for all current transactions it is
           monitoring.

           The agent should consider this value to give a hint as to
           how many transactions to save.  This is not a hard limit,
           just a hint to a maximum value of interest.  If this value is
           reduced by the management station, the agent can take note,
           it may free some records, or it may do nothing.

           The value of this object must persist across reboots."
       ::= { tpmReports 4 }

   --
   -- The tpmExceptionReportsGroup
   --

   tpmExcpReportTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF TpmExcpReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains all sub-flow metrics for transactions
           that have been tagged by the apmExceptionTable filter
           as having had poor performance."
       ::= { tpmReports 5 }

   tpmExcpReportEntry OBJECT-TYPE



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       SYNTAX      TpmExcpReportEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A conceptual row in the tpmExcpReportTable.  This table
           contains aggregated information associated with
           exceptions counted in the apmExceptionTable.  The
           information is aggregated in a manner identical to the
           aggregation in the tpmAggrReportTable, with the exception
           that data only from transactions associated with a
           flagged application is included.

           The indexing into this table follows the indexing in the
           APM-MIB but adds the tpmTransMetricIndex to identify the
           sub-application transaction and metric pair."
       INDEX { apmAppDirAppLocalIndex,       -- Application
               apmAppDirResponsivenessType,  -- Responsiveness Type
               apmExceptionIndex,            -- Linkage to ApmExceptions
               tpmExcpReportTransMetricIndex -- Metric and Protocol
             }
       ::= { tpmExcpReportTable 1 }

   TpmExcpReportEntry ::= SEQUENCE {
       tpmExcpReportTransMetricIndex         TpmTransactionMetricIndex,
       tpmExcpReportStatN                    ZeroBasedCounter32,
       tpmExcpReportOverflowStatN            ZeroBasedCounter32,
       tpmExcpReportHCStatN                  ZeroBasedCounter64,
       tpmExcpReportStatSumX                 ZeroBasedCounter32,
       tpmExcpReportOverflowStatSumX         ZeroBasedCounter32,
       tpmExcpReportHCStatSumX               ZeroBasedCounter64,
       tpmExcpReportStatMaximum              ZeroBasedCounter32,
       tpmExcpReportStatMinimum              ZeroBasedCounter32,
       tpmExcpReportStatSumSq                ZeroBasedCounter32,
       tpmExcpReportOverflowStatSumSq        ZeroBasedCounter32,
       tpmExcpReportHCStatSumSq              ZeroBasedCounter64,
       tpmExcpReportStatSumIX                ZeroBasedCounter32,
       tpmExcpReportOverflowStatSumIX        ZeroBasedCounter32,
       tpmExcpReportHCStatSumIX              ZeroBasedCounter64,
       tpmExcpReportStatSumIXSq              ZeroBasedCounter32,
       tpmExcpReportOverflowStatSumIXSq      ZeroBasedCounter32,
       tpmExcpReportHCStatSumIXSq            ZeroBasedCounter64
   }

   tpmExcpReportTransMetricIndex OBJECT-TYPE
       SYNTAX      TpmTransactionMetricIndex
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION



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            "A unique index that identifies the transaction and
            metric associated with the data reported here."
       ::= { tpmExcpReportEntry 1 }

   tpmExcpReportStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The count of the total number of data points for the
           specified metric.  This number always represents the
           total size of the statistical datum analyzed.  Each
           metric specifies the exact meaning of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmExcpReportEntry 2 }

   tpmExcpReportOverflowStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated tpmExcpReportStatN
           counter has overflowed.  Note that this object will only
           be instantiated if the associated tpmExcpReportHCStatN
           object is also instantiated for a particular dataSource."
       ::= { tpmExcpReportEntry 3 }

   tpmExcpReportHCStatN OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmExcpReportStatN.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmExcpReportEntry 4 }

   tpmExcpReportStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The sum of all the data point values for the specified
           metric.  This number always represents the total values



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           of the statistical datum analyzed.  Each metric
           specifies the exact meaning of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmExcpReportEntry 5 }

   tpmExcpReportOverflowStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmExcpReportStatSumX counter has overflowed.
           Note that this object will only be instantiated if
           the associated tpmExcpReportHCStatSumX object is also
           instantiated for a particular dataSource."
       ::= { tpmExcpReportEntry 6 }

   tpmExcpReportHCStatSumX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmExcpReportStatSumX.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmExcpReportEntry 7 }

   tpmExcpReportStatMaximum OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The single maximum data point value observed during the
           study period for the specified metric.  This number always
           represents the maximum value of any single statistical
           datum analyzed.  Each metric specifies the exact meaning
           of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmExcpReportEntry 8 }

   tpmExcpReportStatMinimum OBJECT-TYPE



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       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The single minimum data point value observed during the
           study period for the specified metric.  This number always
           represents the minimum value of any single statistical
           datum analyzed.  Each metric specifies the exact meaning
           of this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmExcpReportEntry 9 }

   tpmExcpReportStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The sum of all the squared data point values for the
           specified metric.  This number always represents the
           total of the squared values of the statistical datum
           analyzed.  Each metric specifies the exact meaning of
           this object.

           This value represents the results of one metric and is
           related directly to the specific parameters of the metric
           and the Server and Client addresses involved."
       ::= { tpmExcpReportEntry 10 }

   tpmExcpReportOverflowStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmExcpReportStatSumSq counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmExcpReportHCStatSumSq object is also
           instantiated for a particular dataSource."
       ::= { tpmExcpReportEntry 11 }

   tpmExcpReportHCStatSumSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION



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           "The high-capacity version of tpmExcpReportStatSumSq.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmExcpReportEntry 12 }

   tpmExcpReportStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "For each interval, each data point is associated with a
           value I, I = 1..N where N is the number of data points;
           tpmExcpReportStatSumIX is the multiplication of the
           data point value with the current I.  This value along with
           the other statistics values allow the calculation of the
           slope of the least-squares line through the data points."
       ::= { tpmExcpReportEntry 13 }

   tpmExcpReportOverflowStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmExcpReportStatSumIX counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmExcpReportHCStatSumIX object is also
           instantiated for a particular dataSource."
       ::= { tpmExcpReportEntry 14 }

   tpmExcpReportHCStatSumIX OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmExcpReportStatSumIX.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmExcpReportEntry 15 }

   tpmExcpReportStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "For each interval, each data point is associated with a



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           value I, I = 1..N where N is the number of data points;
           tpmExcpReportStatSumIXSq is the multiplication of the data
           point value with the current I.  This value along with the
           other statistics values allow the calculation of the slope of
           the least-squares line through the data points."
       ::= { tpmExcpReportEntry 16 }

   tpmExcpReportOverflowStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of times the associated
           tpmExcpReportStatSumIXSq counter has overflowed.
           Note that this object will only be instantiated if the
           associated tpmExcpReportHCStatSumIXSq object is also
           instantiated for a particular dataSource."
       ::= { tpmExcpReportEntry 17 }

   tpmExcpReportHCStatSumIXSq OBJECT-TYPE
       SYNTAX      ZeroBasedCounter64
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The high-capacity version of tpmExcpReportStatSumIXSq.
           Note that this object will only be instantiated if the
           agent supports High Capacity monitoring for a particular
           dataSource."
       ::= { tpmExcpReportEntry 18 }

   --
   -- TPM Conformance
   --

   tpmMIBCompliances  OBJECT IDENTIFIER ::= { tpmConformance 1 }
   tpmGroups          OBJECT IDENTIFIER ::= { tpmConformance 2 }

   --
   -- TPM Compliance Statement
   --

   tpmMIBCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
           "Describes the requirements for conformance to
           the TPM-MIB.

           This compliance statement defines the following



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           TPM-MIB implementation:

            - tpmCapabilitiesGroup (minimum)
            - tpmAggregateReportsGroup (minimum)
            - tpmCurrentReportsGroup (optional)
            - tpmExceptionReportsGroup (optional).

           In order to implement the (optional)
           tpmExceptionReportsGroup, it is necessary
           to implement pieces of the APM-MIB as
           described in the tpmApmMIBCompliance MODULE
           below.  Further, in the event that the TPM-MIB
           is used to provide a drill-down capability,
           which is the true value of this MIB, then the
           tpmApmReportControlGroup must be implemented."
       MODULE -- this module

       MANDATORY-GROUPS
           { tpmCapabilitiesGroup,
             tpmAggregateReportsGroup }

       GROUP tpmCurrentReportsGroup
       DESCRIPTION
           "The implementation of this group is optional."

       GROUP tpmExceptionReportsGroup
       DESCRIPTION
           "The implementation of this group is optional.
           However, because the control for this reporting group
           resides with the APM-MIB module, the apmReportGroup
           and the apmExceptionGroup must also be implemented."

       ::= { tpmMIBCompliances 1 }

   --
   -- tpmCurrentReportsGroup Compliance
   --
   tpmCurrentReportsCompliance MODULE-COMPLIANCE
           STATUS  current
           DESCRIPTION
               "This defines the Current Reports compliance.
                This is useful when information on in-progress
                and historical transaction-level data is
                desired."
           MODULE -- this module

           MANDATORY-GROUPS
               { tpmCapabilitiesGroup,



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                 tpmAggregateReportsGroup,
                 tpmCurrentReportsGroup }

       ::= { tpmMIBCompliances 2 }

   --
   -- tpmExceptionReportsGroup Compliance
   --
   tpmExceptionReportsCompliance MODULE-COMPLIANCE
           STATUS  current
           DESCRIPTION
               "This defines the Exception Reports compliance.
                This is useful when information on
                transactions whose performance is deemed
                out-of-bounds."

           MODULE -- this module

           MANDATORY-GROUPS
               { tpmCapabilitiesGroup,
                 tpmAggregateReportsGroup,
                 tpmExceptionReportsGroup }

           MODULE APM-MIB

           MANDATORY-GROUPS
               { apmReportGroup,
                 apmExceptionGroup }

       ::= { tpmMIBCompliances 3 }

   --
   --  TPM-MIB Groups
   --

   tpmCapabilitiesGroup    OBJECT-GROUP
       OBJECTS { tpmClockResolution,
                 tpmClockMaxSkew,
                 tpmClockSource,
                 tpmTransMetricDirLastChange,
                 tpmTransMetricProtocolIndex,
                 tpmTransMetricMetricIndex,
                 tpmTransMetricDirConfig,
                 tpmMetricDefType,
                 tpmMetricDefDirType,
                 tpmMetricDefName,
                 tpmMetricDefReference,
                 tpmMetricDefGlobalID }



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       STATUS  current
       DESCRIPTION
           "The tpmCapabilitiesGroup specifies various capabilities
           associated with the monitoring agent."
       ::= { tpmGroups 1 }

   tpmAggregateReportsGroup    OBJECT-GROUP
       OBJECTS { tpmAggrReportCntrlApmCntrlIndex,
                 tpmAggrReportCntrlDataSource,
                 tpmAggrReportCntrlAggrType,
                 tpmAggrReportCntrlInterval,
                 tpmAggrReportCntrlReqSize,
                 tpmAggrReportCntrlGrantedSize,
                 tpmAggrReportCntrlReqReports,
                 tpmAggrReportCntrlGrantedReports,
                 tpmAggrReportCntrlStartTime,
                 tpmAggrReportCntrlReportNumber,
                 tpmAggrReportCntrlInsertsDenied,
                 tpmAggrReportCntrlDroppedFrames,
                 tpmAggrReportCntrlOwner,
                 tpmAggrReportCntrlStorageType,
                 tpmAggrReportCntrlStatus,
                 tpmAggrReportStatN,
                 tpmAggrReportOverflowStatN,
                 tpmAggrReportHCStatN,
                 tpmAggrReportStatSumX,
                 tpmAggrReportOverflowStatSumX,
                 tpmAggrReportHCStatSumX,
                 tpmAggrReportStatMaximum,
                 tpmAggrReportStatMinimum,
                 tpmAggrReportStatSumSq,
                 tpmAggrReportOverflowStatSumSq,
                 tpmAggrReportHCStatSumSq,
                 tpmAggrReportStatSumIX,
                 tpmAggrReportOverflowStatSumIX,
                 tpmAggrReportHCStatSumIX,
                 tpmAggrReportStatSumIXSq,
                 tpmAggrReportOverflowStatSumIXSq,
                 tpmAggrReportHCStatSumIXSq }
       STATUS  current
       DESCRIPTION
           "The tpmAggregateReportsGroup provides control
           and reporting of aggregate measurement
           statistics."
       ::= { tpmGroups 2 }

   tpmCurrentReportsGroup  OBJECT-GROUP
       OBJECTS { tpmCurReportMetricValue,



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                 tpmCurReportCompletion,
                 tpmCurReportSize }
       STATUS  current
       DESCRIPTION
           "The tpmCurrentReportsGroup contains metric
           information relating to ongoing measurements
           as well as historical values."
       ::= { tpmGroups 3 }

   tpmExceptionReportsGroup  OBJECT-GROUP
       OBJECTS { tpmExcpReportStatN,
                 tpmExcpReportOverflowStatN,
                 tpmExcpReportHCStatN,
                 tpmExcpReportStatSumX,
                 tpmExcpReportOverflowStatSumX,
                 tpmExcpReportHCStatSumX,
                 tpmExcpReportStatMaximum,
                 tpmExcpReportStatMinimum,
                 tpmExcpReportStatSumSq,
                 tpmExcpReportOverflowStatSumSq,
                 tpmExcpReportHCStatSumSq,
                 tpmExcpReportStatSumIX,
                 tpmExcpReportOverflowStatSumIX,
                 tpmExcpReportHCStatSumIX,
                 tpmExcpReportStatSumIXSq,
                 tpmExcpReportOverflowStatSumIXSq,
                 tpmExcpReportHCStatSumIXSq }
       STATUS  current
       DESCRIPTION
           "The tpmExceptionReportsGroup reports
           sub-application level statistics associated
           with errant applications."
       ::= { tpmGroups 4 }

   END

<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>.  Acknowledgements</span>

   This memo has been produced with a great deal of assistance from
   David Craver, Joseph Maixner, and John Metzger of Hifn, Inc.  The
   authors also gratefully acknowledge the beneficial discussions they
   have had with Carter Bullard of QoSient, LLC.  The tpmMetricDefTable
   was taken from Andy Bierman's performance management capabilities
   document, which was proposed early on in the RMON WG during the
   formation of the TPM and APM MIB work.  Finally, this MIB module
   draws heavily from the work of Steve Waldbusser and his APM-MIB
   [<a href="./rfc3729" title="&quot;Application Performance Measurement MIB&quot;">RFC3729</a>].




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<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>.  Security Considerations</span>

   This MIB relates to a system that provides a passive monitoring
   capability of a broadcast subnet, a switched subnet, or point-to-
   point subnets.  As such, it collects information relating to network
   layer addresses and traffic statistics relating to conversations and
   to application-level activities.  These statistics could be deemed
   sensitive in certain networking environments.

   There are a number of management objects defined in this MIB module
   with a MAX-ACCESS clause of read-write and/or read-create.  Such
   objects may be considered sensitive or vulnerable in some network
   environments.  The support for SET operations in a non-secure
   environment without proper protection can have a negative effect on
   network operations.  These are the tables and objects and their
   sensitivity/vulnerability:

      + The tpmTransMetricDirConfig object describes and configures the
        probe's support for a given performance metric in relation to a
        specified transaction and application.  The agent creates
        entries in this table for all metric and transaction
        combinations that it can generate, and this object controls the
        on/off switch for this capability.  If certain statistics for a
        supported transaction are deemed sensitive, then access to SET
        operations on this object should be protected.

      + The tpmAggrReportCntrlDataSource sets the interface on which the
        network addresses and conversational and application-level
        statistics will be collected.

      + The tpmAggrReportCntrlAggrType object controls the level of data
        aggregation implemented in the report tables.  For example, this
        object could be set to allow client-level information to be
        exposed.

   In order to implement this MIB module, an agent must make certain
   management information available about protocols and network
   addresses used within a managed system, which may be considered
   sensitive in some network environments.  Therefore some of the
   readable objects in this MIB module (i.e., objects with a MAX-ACCESS
   other than not-accessible) may be considered sensitive or vulnerable
   in some network environments.  It is thus important to control even
   GET and/or NOTIFY access to these objects and possibly to even
   encrypt the values of these objects when sending them over the
   network via SNMP.  These are the tables and objects and their
   sensitivity/vulnerability:





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      + The tpmAggrReportTable contains the statistical studies which
        the probe was configured to generate.  These tables contain the
        historical, aggregated data providing information on the network
        address and traffic statistics related to their conversations.

      + The tpmCurReportTable contains information on current
        transaction flows.  This table provides a view of the current
        activity on a subnet or a client machine.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPSec),
   even then, there is no control as to who on the secure network is
   allowed to access and GET/SET (read/change/create/delete) the objects
   in this MIB module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see <a href="./rfc3410#section-8">[RFC3410], section&nbsp;8</a>),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module is properly configured to give access to
   the objects only to those principals (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>.  Normative References</span>

   [<a id="ref-RFC2021">RFC2021</a>]   Waldbusser, S., "Remote Network Monitoring Management
               Information Base Version 2 using SMIv2", <a href="./rfc2021">RFC 2021</a>,
               January 1997.

   [<a id="ref-RFC2026">RFC2026</a>]   Bradner, S., "The Internet Standards Process -- Revision
               3", <a href="https://www.rfc-editor.org/bcp/bcp9">BCP 9</a>, <a href="./rfc2026">RFC 2026</a>, October 1996.

   [<a id="ref-RFC2578">RFC2578</a>]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
               Rose, M., and S. Waldbusser, "Structure of Management
               Information Version 2 (SMIv2)", STD 58, <a href="./rfc2578">RFC 2578</a>, April
               1999.

   [<a id="ref-RFC2579">RFC2579</a>]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
               Rose, M., and S. Waldbusser, "Textual Conventions for
               SMIv2", STD 58, <a href="./rfc2579">RFC 2579</a>, April 1999.






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   [<a id="ref-RFC2580">RFC2580</a>]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
               Rose, M., and S. Waldbusser, "Conformance Statements for
               SMIv2", STD 58, <a href="./rfc2580">RFC 2580</a>, April 1999.

   [<a id="ref-RFC2819">RFC2819</a>]   Waldbusser, S., "Remote Network Monitoring MIB", STD 59,
               <a href="./rfc2819">RFC 2819</a>, May 2000.

   [<a id="ref-RFC2856">RFC2856</a>]   Bierman, A., McCloghrie, K., and R. Presuhn, "Textual
               Conventions for Additional High Capacity Data Types", <a href="./rfc2856">RFC</a>
               <a href="./rfc2856">2856</a>, June 2000.

   [<a id="ref-RFC2895">RFC2895</a>]   Bierman, A., Bucci, C., and R. Iddon, "Remote Network
               Monitoring MIB Protocol Identifiers", <a href="./rfc2895">RFC 2895</a>, August
               2000.

   [<a id="ref-RFC3273">RFC3273</a>]   Waldbusser, S., "Remote Network Monitoring Management
               Information Base for High Capacity Networks", <a href="./rfc3273">RFC 3273</a>,
               July 2002.

   [<a id="ref-RFC3395">RFC3395</a>]   Bierman, A., Bucci, C., Dietz, R., and A. Warth "Remote
               Network Monitoring MIB Protocol Identifiers Reference
               Extensions", <a href="./rfc3395">RFC 3395</a>, September 2002.

   [<a id="ref-RFC3411">RFC3411</a>]   Harrington, D., Presuhn, R., and B. Wijnen, "An
               Architecture for Describing Simple Network Management
               Protocol (SNMP) Management Frameworks", <a href="./rfc3411">RFC 3411</a>,
               December 2002.

   [<a id="ref-RFC3729">RFC3729</a>]   Waldbusser, S., "Application Performance Measurement
               MIB", <a href="./rfc3729">RFC 3729</a>, March 2004.

   [<a id="ref-RFC4149">RFC4149</a>]   Kalbfleisch, K., Cole, R., and D. Romascanu, "Definition
               of Managed Objects for Synthetic Sources for Performance
               Monitoring Algorithms", <a href="./rfc4149">RFC 4149</a>, August 2005.

   [<a id="ref-RFC4148">RFC4148</a>]   Stephan, E., "IP Performance Metrics (IPPM) Metrics
               Registry", <a href="./rfc4148">RFC 4148</a>, August 2005.

<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>.  Informative References</span>

   [<a id="ref-RFC3410">RFC3410</a>]   Case, J., Mundy, R., Partain, D., and B. Stewart,
               "Introduction and Applicability Statements for Internet-
               Standard Management Framework", <a href="./rfc3410">RFC 3410</a>, December 2002.

   [<a id="ref-Y.1540">Y.1540</a>]    The ITU-T Recommendation Y.1540, "IP Data Transport
               Service - IP packet transfer performance metrics", ITU-T
               Rec.  Y.1540, December 2002.




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   [<a id="ref-RFC2679">RFC2679</a>]   Almes, G., Kalidindi, S., and M. Zekauskas, "A One-way
               Delay Metric for IPPM", <a href="./rfc2679">RFC 2679</a>, September 1999.

   [<a id="ref-RFC2680">RFC2680</a>]   Almes, G., Kalidindi, S., and M. Zekauskas, "A One-Way
               Packet Loss Metric for IPPM" <a href="./rfc2680">RFC 2680</a>, September 1999.

   [<a id="ref-RFC2681">RFC2681</a>]   Almes, G., Kalidindi, S., and M. Zekauskas, "A Round-Trip
               Delay Metric for IPPM", <a href="./rfc2681">RFC 2681</a>, September 1999.

   [<a id="ref-RFC3393">RFC3393</a>]   Demichelis, C. and P. Chimento, "IP Packet Delay
               Variation Metric for IP Performance Metrics (IPPM)", <a href="./rfc3393">RFC</a>
               <a href="./rfc3393">3393</a>, November 2002.

   [<a id="ref-RFC3432">RFC3432</a>]   Raisanen, V., Grotefeld, G., and A. Morton, "Network
               Performance Measurement with Periodic Streams", <a href="./rfc3432">RFC 3432</a>,
               November 2002.



































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Authors' Addresses

   Russell Dietz
   Hifn, Inc.
   750 University Ave
   Los Gatos, CA, USA 95032-7695

   Tel: +1 408 399-3623
   Fax: +1 408 399-3501
   EMail: rdietz@hifn.com


   Robert Cole
   Johns Hopkins University Applied Physics Laboratory
   MP2-170
   11100 Johns Hopkins Road
   Laurel, MD 20723-6099
   USA

   Tel: +1 443-778-6951
   EMail: robert.cole@jhuapl.edu






























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Full Copyright Statement

   Copyright (C) The Internet Society (2005).

   This document is subject to the rights, licenses and restrictions
   contained in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a>, and except as set forth therein, the authors
   retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
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   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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   The IETF invites any interested party to bring to its attention any
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.







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</pre>