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.
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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
Dietz & Claise draft-ietf-psamp-mib-03.txt [Page 38]
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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
Dietz & Claise draft-ietf-psamp-mib-03.txt [Page 39]
Internet-Draft PSAMP MIB July 2004
[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
Dietz & Claise draft-ietf-psamp-mib-03.txt [Page 40]
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Dietz & Claise draft-ietf-psamp-mib-03.txt [Page 41]
Internet-Draft PSAMP MIB July 2004
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Dietz & Claise draft-ietf-psamp-mib-03.txt [Page 42]
