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Network Working Group                                      T. Dietz, Ed.
Internet-Draft                                          NEC Europte Ltd.
Expires: Dezember 30, 2004                                     B. Claise
                                                           Cisco Systems
                                                               July 2004


           Definitions of Managed Objects for Packet Sampling
                     <draft-ietf-psamp-mib-03.txt>

Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC2026.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups. Note that other
   groups may also distribute working documents as Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time. It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at http://
   www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on Dezember 30, 2004.

Copyright Notice

   Copyright (C) The Internet Society (2004). All Rights Reserved.

Abstract

   This memo defines managed objects for packet sampling. These objects
   provide information about managed nodes supporting packet sampling,
   including packet sampling capabilities, configuration and statistics.
   They also allow to configure packet sampling concerning the IP
   interface at which packets are sampled, the packet selections methods
   used for sampling, and the collector to which packet samples are
   exported.







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Table of Contents

   1.    Introduction . . . . . . . . . . . . . . . . . . . . . . . .  3

   2.    The Internet-Standard Management Framework . . . . . . . . .  3

   3.    Structure of the PSAMP MIB module  . . . . . . . . . . . . .  3
   3.1   The Sampling Methods Group . . . . . . . . . . . . . . . . .  4
   3.1.1 Selecting All Packets  . . . . . . . . . . . . . . . . . . .  4
   3.1.2 Systematic Count-based Sampling  . . . . . . . . . . . . . .  4
   3.1.3 Systematic Time-based Sampling . . . . . . . . . . . . . . .  5
   3.1.4 Random n-out-of-N Sampling . . . . . . . . . . . . . . . . .  5
   3.1.5 Uniform Probabilistic Sampling . . . . . . . . . . . . . . .  5
   3.1.6 Non-Uniform Probabilistic Sampling . . . . . . . . . . . . .  6
   3.1.7 Flow State Sampling  . . . . . . . . . . . . . . . . . . . .  6
   3.2   The Filtering Methods Group  . . . . . . . . . . . . . . . .  6
   3.2.1 Mask Filtering . . . . . . . . . . . . . . . . . . . . . . .  6
   3.2.2 Hash Filtering . . . . . . . . . . . . . . . . . . . . . . .  6
   3.2.3 Router State Filtering . . . . . . . . . . . . . . . . . . .  7
   3.3   The Reporting Group  . . . . . . . . . . . . . . . . . . . .  7
   3.4   The Instance Group . . . . . . . . . . . . . . . . . . . . .  7

   4.    Definition . . . . . . . . . . . . . . . . . . . . . . . . .  8

   5.    Security Considerations  . . . . . . . . . . . . . . . . . . 38

   6.    Open Issues  . . . . . . . . . . . . . . . . . . . . . . . . 38

   7.    Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . 39

         Normative References . . . . . . . . . . . . . . . . . . . . 39

         Informative References . . . . . . . . . . . . . . . . . . . 39

         Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 40

         Intellectual Property and Copyright Statements . . . . . . . 41














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1. Introduction

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

   This document is a product of the Packet Sampling (PSAMP) working
   group. Its purpose is to define standards-based MIB modules for
   monitoring and configuring managed nodes performing packet sampling.

   It is assumed that packet sampling is performed according to the
   framework defined in [I-D.ietf-psamp-framework]. Packet selection
   methods considered in the MIB module are specified in
   [I-D.ietf-psamp-sample-tech]. Configuration of the export of samples
   to a collector is modeled according to [I-D.ietf-psamp-protocol].

   Section 3 describes the structure of the PSAMP MIB module and section
   4 contains the formal definition. Security issues are discussed in
   section 5.

2. The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   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,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].

3. Structure of the PSAMP MIB module

   This draft does still not contain a complete PSAMP MIB module
   definition, but some essential components of it sketching the
   structure of the complete module. The sketch serves as input to a
   discussion of the MIB module structure, particular of the modeling of
   capabilities and configured packet sampling instances. Please find a
   (not complete) list of open issues at the end of the document.

   The PSAMP-MIB module defined below contains four groups of objects:
   the sampling methods group, the filtering methods group, the
   reporting group, and the instances group.




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3.1 The Sampling Methods Group

   The first group of objects contains information about sampling
   methods. Each sampling method is covered by an individual sub-tree of
   this group. For each method a single object indicating the
   availability of the method is defined. Furthermore, the following
   objects are defined for each method except the first: a sub-group of
   objects indicating specific capabilities and limits of the method,
   and a sub-group specifying sets of parameters in a table. Each
   parameter set uniquely specifies all parameters of a packet sampling
   instance of the method. Also all parameters sets contain a row
   status.

   Methods and parameters of methods are specified in
   [I-D.ietf-psamp-sample-tech]. So far, objects for six methods defined
   in this Internet drafts are contained in the PSAMP MIB module plus an
   additional trivial method. Some of the methods cannot be finished
   within the PSAMP framework because they need some assistance from the
   vendor side. The vendor must specify e.g., the algorithm used for
   non-uniform probabilistic sampling. The seven methods are selecting
   all, systematic count-based sampling, systematic time-based sampling,
   random n-out-of-N sampling, uniform probabilistic sampling,
   non-uniform probabilistic sampling and flow state sampling.

   All methods - except the selecting all method - have an object called
   psampSamp"MethodName"Avail indicating if the method is implemented
   and available in the managed node. The capability objects are
   following after that object. These objects depend on the sampling
   method. After the capabilities the parameter set table follows. The
   objects in the table also depend on the sampling method. These
   parameter sets are not necessarily instantiated at the managed node,
   but for each instantiated parameter set of a method, there MUST be an
   entry in the corresponding table.

   EDITOR NOTE: TBD define usage of RowStatus. The whole paragraph must
   be reviewed before the final version to remove remarks for final
   refinements that must be ready/solved in the final version.

3.1.1 Selecting All Packets

   This trivial packet selection method is alway available. If it is
   applied, all packets will be selected.

3.1.2 Systematic Count-based Sampling

   The systematic count-based sampling method has two capability
   objects: The psampSampCountBasedMaxInterval object indicates the
   maximum sampling interval in packets supported by the implementation,



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   whereas psampSampCountBasedMaxSpacing indicates the maximum spacing
   in packets supported by the implementation.

   Finally the psampSampCountBasedParamSetTable contains two parameters:
   the sampling interval length and the spacing specified in numbers of
   packets.

3.1.3 Systematic Time-based Sampling

   The systematic time-based sampling method has two capability objects:
   psampSampTimeBasedMaxInterval indicates the maximum sampling interval
   in microseconds supported by the implementation, whereas
   psampSampTimeBasedMaxSpacing indicates the maximum spacing in
   microseconds supported by the implementation.

   Finally the psampSampTimeBasedParamSetTable contains two parameters:
   the sampling interval length and the spacing specified in
   microseconds.

3.1.4 Random n-out-of-N Sampling

   The random n-out-of-N sampling method has two capability objects:
   psampSampRandOutOfNMaxPopulation specifying the maximum population N,
   and psampSampRandOutOfNMaxSize the maximum size of n supported by the
   implementation.

   EDITOR NOTE: maximum size of n should be naturally the same as the
   maximum population N! So we may drop psampSampRandOutOfNMaxSize in
   the next version.

   The random n-out-of-N sampling method has also two parameter objects
   in the psampSampRandOutOfNParamSetTable. The first one is
   psampSampRandOutOfNPopulation and gives the number of elements N in
   the parent population. The second psampSampRandOutOfNSize gives the
   number of elements n taken from the parent population N. With these
   two parameters you sample n packets out of N.

3.1.5 Uniform Probabilistic Sampling

   So far, the sub-group of objects specifying capabilities is empty for
   this method.

   EDITOR NOTE: this must be changed since we somehow can define some
   constraints now.

   The psampSampUniProbParamSetTable contains one parameters, the
   psampSampUniProbProbability and gives the probability that a packet
   is sampled. The probability is equal for every packet. The given



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   value must be divided by 4294967295 (=2^32-1), so a value of 0 means
   no packet is sampled (probability is 0) and a value of 4294967295
   means every packet is sampled (probability is 1).

3.1.6 Non-Uniform Probabilistic Sampling

   So far, the sub-group of objects specifying capabilities is empty for
   this method.

   The psampSampNonUniProbParamSetTable contains one parameters, the
   psampSampNonUniProbFunction object that points to another object
   (OID) describing the function that computes the propability that a
   packet is sampled.

   EDITOR NOTE: Do we need to define a standard function?

3.1.7 Flow State Sampling

   So far, the sub-group of objects specifying capabilities is empty for
   this method.

   The psampSampFlowStateParamSetTable contains one parameters, the
   psampSampFlowStateFunction object that points to another object (OID)
   describing the function that checks the flow state and decides if a
   packet is sampled.

   EDITOR NOTE: Do we need to define a standard function?

3.2 The Filtering Methods Group

   EDITOR NOTE: This section does need a complete rewrite. The rewrite
   is deferred until the input for the filtering methods from the other
   WG documents is stable.

   The second group contains information about the filtering methods.
   This group is build up similarly to the sampling methods group. It
   currently contains three filtering methods, the mask filtering, the
   hash filtering and the router state filtering.

3.2.1 Mask Filtering

   to be done...

3.2.2 Hash Filtering

   The first object in this group is psampHashFilteringAvailability
   indicating the availability of this method. So far, the sub-group of
   objects specifying capabilities is empty for this method.



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   EDITOR NOTE: The capabilites should somehow say what hash functions
   are available.

   The psampHashFilteringParameterSetTable contains a parameter set in
   each of its entries that completely specifies a configuration of an
   instance of the packet filtering method. These parameter sets are not
   necessarily instantiated at the managed node, but for each
   instantiated parameter set of this method, there MUST be an entry in
   this table. The parameter set contains one parameters, the
   psampHashFilteringFunction contains an object ID poiting to the hash
   function used.

3.2.3 Router State Filtering

   to be done...

3.3 The Reporting Group

   The reporting group of managed objects provides information on
   collectors to which sampled packets are exported and they allow to
   configure collectors.

   The group contains three tables, the psampCollectorTable, the
   psampCollectorGroupTable and the psampTemplateTable.

   Each entry in the psampCollectorTable specifies a collector by its IP
   address, used transport protocol and port number. Also it contains
   the number of reports sent to this collector.

   The psampCollectorGroupTable groups one or more collectors to a set
   of collectors where sampled packets are sent to. Thus reporting to
   more than one collector at the same time is possible.

   The psampTemplateTable lists all data templates that are used by the
   PSAMP exporter.

   EDITOR NOTE: These table must be completed and the templates must be
   somehow linked to the collector and an instance.

3.4 The Instance Group

   The instance group of managed objects provides information about
   active packet sampling instances at the managed node. It also allows
   to create new instances and to terminate them.

   The group contains two tables, the psampInstanceTable and the
   psampMethodChainTable. Each entry of the psampInstanceTable describes
   an instance by the IP interface it is acting at and by the collector



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   group to which reports on sampled packets are sent. Furthermore a
   start and stop time can be given when the sampling method should run.
   The collectors are specified by their index in the
   psampCollectorGroupTable. The number of packets sampled and sent by
   the instance is available as statistical value
   psampInstancePacketsObserved for each instance.

   The methods used for the instance can be retrieved through the index
   given in the psampInstanceTable. The index of the instance table is
   also the first index in the psampMethodChainTable. So each method
   entry with the same (first) index as the instance is used to produce
   the data record for the instance.

   The psampMethodChainTable describes the concatenation of methods for
   a given instance. If concatenation of methods is not supported on the
   managed node the table will hold exactly one entry per instance.

   The table has two indexes: the first one references an entry in the
   instance table and the second one is the running index for the
   method. The method itself is represented by a pointer (OID) to a
   paremeter set. The methods are applied in the order indicated by the
   second index psampMethodChainIndex. Assume the following table:

   1.4.4.1.2.5.1 = 1 (second index)
   1.4.4.1.2.5.2 = 2 (second index)
   1.4.4.1.3.5.1 = 1.3.6.1.2.1.XXX.1.1.2.3.1.10
     (pointer to a parmeter set psampSampTimeBasedParamSetTableEntry.10)
   1.4.4.1.3.5.2 = 1.3.6.1.2.1.XXX.1.1.1.3.1.4
     (pointer to a parmeter set psampSampCountBasedParamSetTableEntry.4)
   1.4.4.1.4.5.1 = xxx (status of the row)
   1.4.4.1.4.5.2 = xxx (status of the row)

   This would mean that the method psampSampTimeBased with parameter set
   psampSampTimeBasedParamSetTableEntry.10 is applied prior to the
   method psampSampCountBased with parameter set
   psampSampCountBasedParamSetTableEntry.4 for the instance with index
   5.

4. Definition
   PSAMP-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       MODULE-IDENTITY, OBJECT-TYPE, Integer32, Unsigned32, mib-2
           FROM SNMPv2-SMI                  -- RFC2578
       TEXTUAL-CONVENTION, DateAndTime, RowStatus
           FROM SNMPv2-TC                   -- RFC2579
       MODULE-COMPLIANCE, OBJECT-GROUP
           FROM SNMPv2-CONF                 -- RFC2580



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       InterfaceIndex                       -- RFC2863
           FROM IF-MIB
       InetAddressType, InetAddress
           FROM INET-ADDRESS-MIB;           -- RFC3291

   psampMIB MODULE-IDENTITY
       LAST-UPDATED "200401131200Z"         -- 13 February 2004
       ORGANIZATION "IETF Packet Sampling Working Group"
       CONTACT-INFO
           "WG charter:
              http://www.ietf.org/html.charters/psamp-charter.html

            Mailing Lists:
              General Discussion: psamp@ops.ietf.org
              To Subscribe: psamp-request@ops.ietf.org
              In Body: subscribe
              Archive: https://ops.ietf.org/lists/psamp/

            Editor:
              Thomas Dietz
              NEC Europe Ltd.
              Network Laboratories
              Kurfuersten-Anlage 36
              69115 Heidelberg
              Germany
              Phone: +49 6221 90511-28
              Email: dietz@netlab.nec.de"
       DESCRIPTION
           "The PSAMP MIB defines managed objects for packet sampling.
            These objects provide information about managed nodes
            supporting packet sampling, including packet sampling
            capabilities, configuration and statistics.  They also allow
            to configure packet sampling concerning the IP interface at
            which packets are sampled, the packet selections methods
            used for sampling, and the collector to which packet samples
            are exported.

            Copyright (C) The Internet Society (2004).  This version
            of this MIB module is part of RFC yyyy;  see the RFC
            itself for full legal notices."
   -- RFC Ed.: replace yyyy with actual RFC number & remove this notice

        --  Revision history

        REVISION     "200407151200Z"         -- 15 July 2004
        DESCRIPTION
            "Initial version, published as RFC yyyy."
   -- RFC Ed.: replace yyyy with actual RFC number & remove this notice



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       ::= { mib-2 XXX }
   -- XXX to be assigned by IANA.

   -- Textual Conventions

   PsampMethodAvailability ::= TEXTUAL-CONVENTION
       STATUS  current
       DESCRIPTION
           "Used to report the availability of a packet selection
           method:

            available(1) - the method is supported and can be used
            notAvailable(2) - the mothos is not available"
       SYNTAX      INTEGER {
                       available(1),
                       notAvailable(2)
                   }

   -- Top level structure of the MIB

   psampObjects       OBJECT IDENTIFIER ::= { psampMIB 1 }
   psampConformance   OBJECT IDENTIFIER ::= { psampMIB 2 }

   --==================================================================
   -- Packet selection sampling methods group of objects
   --==================================================================

   psampSamplingMethods        OBJECT IDENTIFIER ::= { psampObjects 1 }

   --==================================================================
   --* Method 0: Selecting All Packets
   --==================================================================

   psampSelectAll OBJECT IDENTIFIER ::= { psampSamplingMethods 0 }

   psampSelectAllAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of the trivial method of selecting all packets."
       DEFVAL { available }
       ::= { psampSelectAll 1 }

   --==================================================================
   --* Method 1: Systematic Count-based Sampling
   --==================================================================



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   psampSampCountBased OBJECT IDENTIFIER ::= { psampSamplingMethods 1 }

   psampSampCountBasedAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of systematic count-based sampling at the managed node."
       DEFVAL { notAvailable }
       ::= { psampSampCountBased 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   psampSampCountBasedCap OBJECT IDENTIFIER
       ::= { psampSampCountBased 2 }

   psampSampCountBasedMaxInterval OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the sampling interval."
       ::= { psampSampCountBasedCap 1 }

   psampSampCountBasedMaxSpacing OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the sampling spacing."
       ::= { psampSampCountBasedCap 2 }

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampCountBasedParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampSampCountBasedParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of systematic count-
           based packet sampling.  A parameter set describing a
           configuration contains two parameters: the sampling



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           interval length and the spacing."
       ::= { psampSampCountBased 3 }

   psampSampCountBasedParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampCountBasedParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampSampCountBasedParamSetTable."
       INDEX { psampSampCountBasedIndex }
       ::= { psampSampCountBasedParamSetTable 1 }

   PsampSampCountBasedParamSetEntry ::=
       SEQUENCE {
           psampSampCountBasedIndex     Integer32,
           psampSampCountBasedInterval  Unsigned32,
           psampSampCountBasedSpacing   Unsigned32,
           psampSampCountBasedRowStatus RowStatus
       }

   psampSampCountBasedIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampCountBasedParamSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampCountBasedParamSetEntry 1 }

   psampSampCountBasedInterval OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the sampling
          interval for systematic count-based sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampCountBasedParamSetEntry 2 }

   psampSampCountBasedSpacing OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-create



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       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the sampling
          spacing for systematic count-based sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampCountBasedParamSetEntry 3 }

   psampSampCountBasedRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampCountBasedParamSetEntry 4 }

   --==================================================================
   --* Method 2: Systematic Time-based Sampling
   --==================================================================

   psampSampTimeBased OBJECT IDENTIFIER ::= { psampSamplingMethods 2 }

   psampSampTimeBasedAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of systematic time-based sampling at the managed node."
       DEFVAL { notAvailable }
       ::= { psampSampTimeBased 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   psampSampTimeBasedCap OBJECT IDENTIFIER
       ::= { psampSampTimeBased 2 }

   psampSampTimeBasedMaxInterval OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "microseconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the sampling interval."
       ::= { psampSampTimeBasedCap 1 }

   psampSampTimeBasedMaxSpacing OBJECT-TYPE



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       SYNTAX      Unsigned32
       UNITS       "microseconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the sampling spacing."
       ::= { psampSampTimeBasedCap 2 }

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampTimeBasedParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampSampTimeBasedParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of systematic time-
           based packet sampling.  A parameter set describing a
           configuration contains two parameters: the sampling
           interval length and the spacing."
       ::= { psampSampTimeBased 3 }

   psampSampTimeBasedParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampTimeBasedParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampSampTimeBasedParamSetTable."
       INDEX { psampSampTimeBasedIndex }
       ::= { psampSampTimeBasedParamSetTable 1 }

   PsampSampTimeBasedParamSetEntry ::=
       SEQUENCE {
           psampSampTimeBasedIndex     Integer32,
           psampSampTimeBasedInterval  Unsigned32,
           psampSampTimeBasedSpacing   Unsigned32,
           psampSampTimeBasedRowStatus RowStatus
       }

   psampSampTimeBasedIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampTimeBasedParameterSetTable.



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          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampTimeBasedParamSetEntry 1 }

   psampSampTimeBasedInterval OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "microseconds"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies a sampling
          interval for systematic time-based sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampTimeBasedParamSetEntry 2 }

   psampSampTimeBasedSpacing OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "microseconds"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies a sampling
          spacing for systematic time-based sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampTimeBasedParamSetEntry 3 }

   psampSampTimeBasedRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampTimeBasedParamSetEntry 4 }

   --==================================================================
   --* Method 3: Random n-out-of-N Sampling
   --==================================================================

   psampSampRandOutOfN OBJECT IDENTIFIER ::= { psampSamplingMethods 3 }

   psampSampRandOutOfNAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability



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          of random n-out-of-N sampling at the managed node."
       DEFVAL { notAvailable }
       ::= { psampSampRandOutOfN 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   psampSampRandOutOfNCap OBJECT IDENTIFIER
       ::= { psampSampRandOutOfN 2 }

   psampSampRandOutOfNMaxPopulation OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the population size."
       ::= { psampSampRandOutOfNCap 1 }

   psampSampRandOutOfNMaxSize OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "number of packets"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the the maximum
          number that can be specified for the sampling size."
       ::= { psampSampRandOutOfNCap 2 }

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampRandOutOfNParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampSampRandOutOfNParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random n-out-of-N
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampSampRandOutOfN 3 }

   psampSampRandOutOfNParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampRandOutOfNParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the



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           psampSampRandOutOfNParamSetTable."
       INDEX { psampSampRandOutOfNIndex }
       ::= { psampSampRandOutOfNParamSetTable 1 }

   PsampSampRandOutOfNParamSetEntry ::=
       SEQUENCE {
           psampSampRandOutOfNIndex      Integer32,
           psampSampRandOutOfNPopulation Unsigned32,
           psampSampRandOutOfNSize       Unsigned32,
           psampSampRandOutOfNRowStatus  RowStatus
       }

   psampSampRandOutOfNIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampRandOutOfNParamSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampRandOutOfNParamSetEntry 1 }

   psampSampRandOutOfNPopulation OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "packets"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the number
          of elements in the parent population of the sampling
          algorithm."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampRandOutOfNParamSetEntry 2 }

   psampSampRandOutOfNSize OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "packets"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the number
          of elements that are sampled from the parent
          population of the sampling algorithm."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampRandOutOfNParamSetEntry 3 }



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   psampSampRandOutOfNRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampRandOutOfNParamSetEntry 4 }

   --==================================================================
   --* Method 4: Uniform Probabilistic Sampling
   --==================================================================

   psampSampUniProb OBJECT IDENTIFIER ::= { psampSamplingMethods 4 }

   psampSampUniProbAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of random uniform probabilistic sampling at the managed node."
       DEFVAL { notAvailable }
       ::= { psampSampUniProb 1 }

   psampSampUniProbCap OBJECT IDENTIFIER
       ::= { psampSampUniProb 2 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- No capabilities defined, yet.

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampUniProbParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampSampUniProbParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random probabilistic
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampSampUniProb 3 }

   psampSampUniProbParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampUniProbParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current



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       DESCRIPTION
           "Defines an entry in the
           psampSampUniProbParamSetTable."
       INDEX { psampSampUniProbIndex }
       ::= { psampSampUniProbParamSetTable 1 }

   PsampSampUniProbParamSetEntry ::=
       SEQUENCE {
           psampSampUniProbIndex       Integer32,
           psampSampUniProbProbability Unsigned32,
           psampSampUniProbRowStatus   RowStatus
       }

   psampSampUniProbIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampUniProbParameterSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampUniProbParamSetEntry 1 }

   psampSampUniProbProbability OBJECT-TYPE
       SYNTAX      Unsigned32 (0..4294967295)
       UNITS       "packets"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the number
          of elements in the parent population of the sampling
          algorithm."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampUniProbParamSetEntry 2 }

   psampSampUniProbRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampUniProbParamSetEntry 3 }

   --==================================================================
   --* Method 5: Non-Uniform Probabilistic Sampling
   --==================================================================



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   psampSampNonUniProb OBJECT IDENTIFIER ::= { psampSamplingMethods 5 }

   psampSampNonUniProbAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of random non-uniform probabilistic sampling at the managed
          node."
       DEFVAL { notAvailable }
       ::= { psampSampNonUniProb 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampNonUniProbParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampSampNonUniProbParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random probabilistic
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampSampNonUniProb 3 }

   psampSampNonUniProbParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampNonUniProbParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampSampNonUniProbParamSetTable."
       INDEX { psampSampNonUniProbIndex }
       ::= { psampSampNonUniProbParamSetTable 1 }

   PsampSampNonUniProbParamSetEntry ::=
       SEQUENCE {
           psampSampNonUniProbIndex     Integer32,
           psampSampNonUniProbFunction  OBJECT IDENTIFIER,
           psampSampNonUniProbRowStatus RowStatus
       }

   psampSampNonUniProbIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible



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       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampNonUniProbParameterSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampNonUniProbParamSetEntry 1 }

   psampSampNonUniProbFunction OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the function
          that is used to compute the probability for sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampNonUniProbParamSetEntry 2 }

   psampSampNonUniProbRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampNonUniProbParamSetEntry 3 }

   --==================================================================
   --* Method 6: Flow State Sampling
   --==================================================================

   psampSampFlowState OBJECT IDENTIFIER ::= { psampSamplingMethods 6 }

   psampSampFlowStateAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of flow state sampling at the managed node."
       DEFVAL { notAvailable }
       ::= { psampSampFlowState 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampSampFlowStateParamSetTable OBJECT-TYPE



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       SYNTAX      SEQUENCE OF
                   PsampSampFlowStateParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random probabilistic
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampSampFlowState 3 }

   psampSampFlowStateParamSetEntry OBJECT-TYPE
       SYNTAX      PsampSampFlowStateParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampSampFlowStateParamSetTable."
       INDEX { psampSampFlowStateIndex }
       ::= { psampSampFlowStateParamSetTable 1 }

   PsampSampFlowStateParamSetEntry ::=
       SEQUENCE {
           psampSampFlowStateIndex     Integer32,
           psampSampFlowStateFunction  OBJECT IDENTIFIER,
           psampSampFlowStateRowStatus RowStatus
       }

   psampSampFlowStateIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampSampFlowStateParameterSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampSampFlowStateParamSetEntry 1 }

   psampSampFlowStateFunction OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the function
          that is used to check the flow state for sampling."
       REFERENCE
           "draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
       ::= { psampSampFlowStateParamSetEntry 2 }



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   psampSampFlowStateRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampSampFlowStateParamSetEntry 3 }

   --==================================================================
   -- Packet selection filtering methods group of objects
   --==================================================================

   psampFilteringMethods        OBJECT IDENTIFIER ::= { psampObjects 2 }

   --==================================================================
   --* Method 0: Mask filtering
   --==================================================================

   psampFilterMask OBJECT IDENTIFIER ::= { psampFilteringMethods 0 }

   psampFilterMaskAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of mask filtering at the managed node."
       DEFVAL { notAvailable }
       ::= { psampFilterMask 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampFilterMaskParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampFilterMaskParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random probabilistic
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampFilterMask 3 }

   psampFilterMaskParamSetEntry OBJECT-TYPE
       SYNTAX      PsampFilterMaskParamSetEntry
       MAX-ACCESS  not-accessible



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       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampFilterMaskParamSetTable."
       INDEX { psampFilterMaskIndex }
       ::= { psampFilterMaskParamSetTable 1 }

   PsampFilterMaskParamSetEntry ::=
       SEQUENCE {
           psampFilterMaskIndex     Integer32,
           psampFilterMaskRowStatus RowStatus
       }

   psampFilterMaskIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampFilterMaskParameterSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampFilterMaskParamSetEntry 1 }

   psampFilterMaskRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampFilterMaskParamSetEntry 2 }

   --==================================================================
   --* Method 1: Hash filtering
   --==================================================================

   psampFilterHash OBJECT IDENTIFIER ::= { psampFilteringMethods 1 }

   psampFilterHashAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of hash filtering at the managed node."
       DEFVAL { notAvailable }
       ::= { psampFilterHash 1 }




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   psampFilterHashCapabilities OBJECT IDENTIFIER
       ::= { psampFilterHash 2 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampFilterHashParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampFilterHashParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of hash filtering.
           A parameter set describing a configuration
           contains one parameter: the hash function used."
       ::= { psampFilterHash 3 }

   psampFilterHashParamSetEntry OBJECT-TYPE
       SYNTAX      PsampFilterHashParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampFilterHashParamSetTable."
       INDEX { psampFilterHashIndex }
       ::= { psampFilterHashParamSetTable 1 }

   PsampFilterHashParamSetEntry ::=
       SEQUENCE {
           psampFilterHashIndex     Integer32,
           psampFilterHashFunction  OBJECT IDENTIFIER,
           psampFilterHashRowStatus RowStatus
       }

   psampFilterHashIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampFilterHashParamSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampFilterHashParamSetEntry 1 }

   psampFilterHashFunction OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER



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       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
          "When retrieved, this object specifies the the hash
          function executed by the current filtering method."
       ::= { psampFilterHashParamSetEntry 2 }

   psampFilterHashRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampFilterHashParamSetEntry 3 }

   --==================================================================
   --* Method 2: Router State filtering
   --==================================================================

   psampFilterRState OBJECT IDENTIFIER ::= { psampFilteringMethods 2 }

   psampFilterRStateAvail OBJECT-TYPE
       SYNTAX      PsampMethodAvailability
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
          "When retrieved, this object indicates the availability
          of mask filtering at the managed node."
       DEFVAL { notAvailable }
       ::= { psampFilterRState 1 }

   -- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++

   -- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++

   psampFilterRStateParamSetTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF
                   PsampFilterRStateParamSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists configurations of random probabilistic
           sampling.  A parameter set describing a configuration
           contains a single parameter only: the sampling rate."
       ::= { psampFilterRState 3 }

   psampFilterRStateParamSetEntry OBJECT-TYPE
       SYNTAX      PsampFilterRStateParamSetEntry



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       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the
           psampFilterRStateParamSetTable."
       INDEX { psampFilterRStateIndex }
       ::= { psampFilterRStateParamSetTable 1 }

   PsampFilterRStateParamSetEntry ::=
       SEQUENCE {
           psampFilterRStateIndex     Integer32,
           psampFilterRStateRowStatus RowStatus
       }

   psampFilterRStateIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The index of this parameter set in the
          psampFilterRStateParameterSetTable.
          It is used in entries of the psampInstanceTable as
          reference to this parameter set."
       ::= { psampFilterRStateParamSetEntry 1 }

   psampFilterRStateRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampFilterRStateParamSetEntry 2 }

   --==================================================================
   -- Reporting Group
   --==================================================================

   psampReporting        OBJECT IDENTIFIER ::= { psampObjects 3 }

   -- Collector Table +++++++++++++++++++++++++++++++++++++++++++++++++

   psampCollectorTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PsampCollectorEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists collectors to which sampled packets are
           exported."



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       ::= { psampReporting 1 }

   psampCollectorEntry OBJECT-TYPE
       SYNTAX      PsampCollectorEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the psampCollectorTable."
       INDEX { psampCollectorIndex }
       ::= { psampCollectorTable 1 }

   PsampCollectorEntry ::= SEQUENCE {
           psampCollectorIndex             Integer32,
           psampCollectorDstIpAddressType  InetAddressType,
           psampCollectorDstIpAddress      InetAddress,
           psampCollectorDstProtocol       Integer32,
           psampCollectorDstPort           Integer32,
           psampCollectorReportsSent       Integer32,
           psampCollectorRowStatus         RowStatus
       }

   psampCollectorIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The locally arbitrary, but unique identifier of
           a collector.

           The value is expected to remain constant at least from one
           re-initialization of the entity's network management system
           to the next re-initialization."
       ::= { psampCollectorEntry 1 }

   psampCollectorDstIpAddressType OBJECT-TYPE
       SYNTAX      InetAddressType
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The IP address type of the collector."
       ::= { psampCollectorEntry 2 }

   psampCollectorDstIpAddress OBJECT-TYPE
       SYNTAX      InetAddress
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The IP address of the collector."



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       ::= { psampCollectorEntry 3 }

   psampCollectorDstProtocol OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The transport protocol used for exporting sampled
           packets to the collector. Allowed values are ... "
       ::= { psampCollectorEntry 4 }

   psampCollectorDstPort OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The port number of the collector."
       ::= { psampCollectorEntry 5 }

   psampCollectorReportsSent OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of reports sent to the collector."
       ::= { psampCollectorEntry 6 }

   psampCollectorRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampCollectorEntry 7 }

   -- Collector Group Table +++++++++++++++++++++++++++++++++++++++++++

   psampCollectorGroupTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PsampCollectorGroupEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists groups of collectors to which sampled
           packets are exported. If sampled packets are exported to only
           one collector the group consists of exactly one collector."
       ::= { psampReporting 2 }

   psampCollectorGroupEntry OBJECT-TYPE



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       SYNTAX      PsampCollectorGroupEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the psampCollectorGroupTable."
       INDEX { psampCollectorGroupIndex, psampCollectorIndex }
       ::= { psampCollectorGroupTable 1 }

   PsampCollectorGroupEntry ::= SEQUENCE {
           psampCollectorGroupIndex                Integer32,
           psampCollectorGroupRowStatus            RowStatus
       }

   psampCollectorGroupIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The locally arbitrary, but unique identifier of
           a collector group.

           The value is expected to remain constant at least from one
           re-initialization of the entity's network management system
           to the next re-initialization."
       ::= { psampCollectorGroupEntry 1 }

   psampCollectorGroupRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampCollectorGroupEntry 3 }

   -- (Data) Template Table

   psampTemplateTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PsampTemplateEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists templates used by the exporter."
       ::= { psampReporting 3 }

   psampTemplateEntry OBJECT-TYPE
       SYNTAX      PsampTemplateEntry
       MAX-ACCESS  not-accessible
       STATUS      current



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       DESCRIPTION
           "Defines an entry in the psampTemplateTable."
       INDEX { psampTemplateIndex }
       ::= { psampTemplateTable 1 }

   PsampTemplateEntry ::= SEQUENCE {
           psampTemplateIndex       Integer32,
           psampTemplateId          Integer32,
           psampTemplateReportsSent Integer32,
           psampTemplateRowStatus   RowStatus
       }

   psampTemplateIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The locally arbitrary, but unique identifier of
           a template.

           The value is expected to remain constant at least from one
           re-initialization of the entity's network management system
           to the next re-initialization."
       ::= { psampTemplateEntry 1 }

   psampTemplateId OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The unique identifier for the template."
       REFERENCE
           "draft-ietf-ipfix-protocol-02.txt"
       ::= { psampTemplateEntry 2 }

   psampTemplateReportsSent OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of reports sent with this template."
       ::= { psampTemplateEntry 3 }

   psampTemplateRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION



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           "The status of this row of the table."
       ::= { psampTemplateEntry 4 }

   --==================================================================
   -- Instance Group
   --==================================================================

   psampInstances        OBJECT IDENTIFIER ::= { psampObjects 4 }

   psampInstanceTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PsampInstanceEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table lists active instances of packet sampling at
           the managed node."
       ::= { psampInstances 1 }

   psampInstanceEntry OBJECT-TYPE
       SYNTAX      PsampInstanceEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Defines an entry in the psampInstanceTable."
       INDEX { psampInstanceIndex }
       ::= { psampInstanceTable 1 }

   PsampInstanceEntry ::= SEQUENCE {
           psampInstanceIndex               Integer32,
           psampInstanceIfIndex             InterfaceIndex,
           psampInstanceStartTime           DateAndTime,
           psampInstanceStopTime            DateAndTime,
           psampInstanceTemplateIndex       Integer32,
           psampInstanceCollectorGroupIndex Integer32,
           psampInstancePacketsObserved     Integer32,
           psampInstanceReportsSent         Integer32,
           psampInstanceRowStatus           RowStatus
       }

   psampInstanceIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The locally arbitrary, but unique identifier of
           an instance.

           The value is expected to remain constant at least from one



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           re-initialization of the entity's network management system
           to the next re-initialization."
       ::= { psampInstanceEntry 1 }

   psampInstanceIfIndex OBJECT-TYPE
       SYNTAX      InterfaceIndex
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "Index of the IP interface at which the packet stream
           is observed by packet selection method 1."
       ::= { psampInstanceEntry 2 }

   psampInstanceStartTime OBJECT-TYPE
       SYNTAX      DateAndTime
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The date and time when collecting samples for this parameter
           set should start."
       ::= { psampInstanceEntry 3 }

   psampInstanceStopTime OBJECT-TYPE
       SYNTAX      DateAndTime
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The date and time when collecting samples for this parameter
           set should stop."
       ::= { psampInstanceEntry 4 }

   psampInstanceTemplateIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The Index of a template in the template table. This implies
           the knowledge about the method chain from the method chain
           table. Furthermore it links the instance, method chain
           (selector) and template together.

           The identified template is applied to the stream of packets
           observed at the interface."
       ::= { psampInstanceEntry 5 }

   psampInstanceCollectorGroupIndex OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-create



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       STATUS      current
       DESCRIPTION
           "The index of the collector group to which packet reports are
           sent."
       ::= { psampInstanceEntry 6 }

   psampInstancePacketsObserved OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of packets observed by method before selecting
           packets."
       ::= { psampInstanceEntry 7 }

   psampInstanceReportsSent OBJECT-TYPE
       SYNTAX      Integer32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of reports on sampled packets sent to the
           collector."
       ::= { psampInstanceEntry 8 }

   psampInstanceRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampInstanceEntry 9 }

   -- Method Chain Table ++++++++++++++++++++++++++++++++++++++++++++++

   psampMethodChainTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PsampMethodChainEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains method chains lists and
           connects them to instances used by export the data."
       ::= { psampInstances 4 }

   psampMethodChainEntry OBJECT-TYPE
       SYNTAX      PsampMethodChainEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION



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           "Defines an entry in the psampMethodChainTable."
       INDEX { psampInstanceIndex, psampMethodChainIndex }
       ::= { psampMethodChainTable 1 }

   PsampMethodChainEntry ::= SEQUENCE {
           psampMethodChainIndex     Integer32,
           psampMethodChainMethod    OBJECT IDENTIFIER,
           psampMethodChainRowStatus RowStatus
       }

   psampMethodChainIndex OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The locally arbitrary, but unique identifier of
           a template.

           The value is expected to remain constant at least from one
           re-initialization of the entity's network management system
           to the next re-initialization."
       ::= { psampMethodChainEntry 2 }

   psampMethodChainMethod OBJECT-TYPE
       SYNTAX      OBJECT IDENTIFIER
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The method used for the template at a certain position in
           the method chain."
       ::= { psampMethodChainEntry 3 }

   psampMethodChainRowStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
           "The status of this row of the table."
       ::= { psampMethodChainEntry 4 }

   --==================================================================
   -- Conformance information
   --==================================================================

    psampCompliances OBJECT IDENTIFIER ::= { psampConformance 1 }
    psampGroups      OBJECT IDENTIFIER ::= { psampConformance 2 }

   --==================================================================



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   -- Compliance statements
   --==================================================================

    psampCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
               "The compliance statement for the PSAMP-MIB."
       MODULE  -- this module
           MANDATORY-GROUPS { psampGroup }
       ::= { psampCompliances 1 }

   --==================================================================
   -- MIB groupings
   --==================================================================

    psampGroup OBJECT-GROUP
      OBJECTS {
                psampSelectAllAvail,

                psampSampCountBasedAvail,
                psampSampCountBasedMaxInterval,
                psampSampCountBasedMaxSpacing,
                psampSampCountBasedInterval,
                psampSampCountBasedSpacing,
                psampSampCountBasedRowStatus,

                psampSampTimeBasedAvail,
                psampSampTimeBasedMaxInterval,
                psampSampTimeBasedMaxSpacing,
                psampSampTimeBasedInterval,
                psampSampTimeBasedSpacing,
                psampSampTimeBasedRowStatus,

                psampSampRandOutOfNAvail,
                psampSampRandOutOfNMaxPopulation,
                psampSampRandOutOfNMaxSize,
                psampSampRandOutOfNPopulation,
                psampSampRandOutOfNSize,
                psampSampRandOutOfNRowStatus,

                psampSampUniProbAvail,
                psampSampUniProbProbability,
                psampSampUniProbRowStatus,

                psampSampNonUniProbAvail,
                psampSampNonUniProbFunction,
                psampSampNonUniProbRowStatus,




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                psampSampFlowStateAvail,
                psampSampFlowStateFunction,
                psampSampFlowStateRowStatus,

                psampFilterMaskAvail,
                psampFilterMaskRowStatus,

                psampFilterHashAvail,
                psampFilterHashFunction,
                psampFilterHashRowStatus,

                psampFilterRStateAvail,
                psampFilterRStateRowStatus,

                psampCollectorDstIpAddressType,
                psampCollectorDstIpAddress,
                psampCollectorDstProtocol,
                psampCollectorDstPort,

                psampCollectorReportsSent,
                psampCollectorRowStatus,

                psampCollectorGroupRowStatus,

                psampTemplateId,
                psampTemplateReportsSent,
                psampTemplateRowStatus,

                psampMethodChainMethod,
                psampMethodChainRowStatus,

                psampInstanceIfIndex,
                psampInstanceStartTime,
                psampInstanceStopTime,
                psampInstanceTemplateIndex,
                psampInstanceCollectorGroupIndex,
                psampInstancePacketsObserved,
                psampInstanceReportsSent,
                psampInstanceRowStatus
              }
      STATUS  current
      DESCRIPTION
          "The group of all accessible objects of the PSAMP MIB."
       ::= { psampGroups 1 }

   END





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5. Security Considerations

   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:

   To be done.

6. Open Issues

   o  is the selecting all method mandatory for all implementations?

   o  should we have standard functions for non-uniform probabilistic
      sampling, flow state sampling and the hash and router state
      filtering?

   o  describe row status objects to writable tables

   o  support for reporting from a single instance to multiple
      collectors may be refined

   o  elaborate conformance statements

   o  complete security considerations

   o  observed packets may be expanded to number of packets before
      sampling and after sampling or something similar.

   o  align wording with the other draft documents (e.g. instance vs.
      selector)

   o  check definition of selector, currently selector and instance
      represent not quite the same thing

   o  add option template id to each parameter set for exporting option
      data

   o  finish data template table and link it with the other elements.

   o  implement observation point for the sampling/filtering methods.

   o  change instance ifIndex to observation point in some way.

   o  improve the linking between instance and collector group like it



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      is between instance and method chain (take indexes to link those
      tables). Advantage: the collector must exist before an instance
      for it can be created. Same is true for instance and data template
      table.

   o  check data type for "microseconds", protocol type, port, template
      id and maybe some others

   o  ...


7. Acknowledgment

   This document is a product of the PSAMP working group.

Normative References

   [I-D.ietf-psamp-framework]
              Duffield, N., "A Framework for Passive Packet
              Measurement", draft-ietf-psamp-framework-05 (work in
              progress), January 2004.

   [I-D.ietf-psamp-sample-tech]
              Zseby, T., Molina, M., Raspall, F. and N. Duffield,
              "Sampling and Filtering Techniques for IP Packet
              Selection", draft-ietf-psamp-sample-tech-04 (work in
              progress), February 2004.

   [I-D.ietf-psamp-protocol]
              Claise, B., "Packet Sampling (PSAMP) Protocol
              Specifications", draft-ietf-psamp-protocol-01 (work in
              progress), February 2004.

   [RFC2578]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Structure of
              Management Information Version 2 (SMIv2)", STD 58, RFC
              2578, April 1999.

   [RFC2579]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Textual
              Conventions for SMIv2", STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D. and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

Informative References




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   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC3410]  Case, J., Mundy, R., Partain, D. and B. Stewart,
              "Introduction and Applicability Statements for
              Internet-Standard Management Framework", RFC 3410,
              December 2002.


Authors' Addresses

   Thomas Dietz (editor)
   NEC Europte Ltd.
   Network Laboratories
   Kurfuersten-Anlage 36
   69115 Heidelberg
   Germany

   Phone: +49 6221 90511-28
   EMail: dietz@netlab.nec.de


   Benoit Claise
   Cisco Systems
   De Kleetlaan 6a b1
   1831 Degem
   Belgium

   Phone: +32 2 704 5622
   EMail: bclaise@cisco.com





















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Intellectual Property Statement

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   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


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