Internet DRAFT - draft-ietf-psamp-mib
draft-ietf-psamp-mib
Network Working Group T. Dietz, Ed.
Internet-Draft NEC Europte Ltd.
Expires: December 25, 2006 B. Claise
Cisco Systems
June 23, 2006
Definitions of Managed Objects for Packet Sampling
<draft-ietf-psamp-mib-06.txt>
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Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This memo defines managed objects for sampling and filtering
techniques for IP packet selection. These objects provide
information about managed nodes supporting packet sampling, including
packet sampling capabilities and configuration. They also allow to
configure packet sampling concerning the IP interface at which
packets are sampled and the packet selections methods used for
sampling.
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Table of Contents
1. Open Issues/TODOs . . . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. PSAMP Documents Overview . . . . . . . . . . . . . . . . . . . 3
4. The Internet-Standard Management Framework . . . . . . . . . . 4
5. Structure of the PSAMP MIB module . . . . . . . . . . . . . . 4
5.1. The Sampling Group . . . . . . . . . . . . . . . . . . . . 5
5.1.1. Selecting All Packets . . . . . . . . . . . . . . . . 5
5.1.2. Systematic Count-based Sampling . . . . . . . . . . . 6
5.1.3. Systematic Time-based Sampling . . . . . . . . . . . . 6
5.1.4. Random n-out-of-N Sampling . . . . . . . . . . . . . . 6
5.1.5. Uniform Probabilistic Sampling . . . . . . . . . . . . 6
5.1.6. Non-Uniform Probabilistic Sampling . . . . . . . . . . 7
5.1.7. Flow State Sampling . . . . . . . . . . . . . . . . . 7
5.2. The Filtering Methods Group . . . . . . . . . . . . . . . 7
5.2.1. Match Filtering . . . . . . . . . . . . . . . . . . . 7
5.2.2. Hash Filtering . . . . . . . . . . . . . . . . . . . . 7
5.2.3. Router State Filtering . . . . . . . . . . . . . . . . 8
5.3. The Hash Functions Group . . . . . . . . . . . . . . . . . 9
6. Definition . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 43
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 43
9. Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . 43
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.1. Normative References . . . . . . . . . . . . . . . . . . . 43
10.2. Informative References . . . . . . . . . . . . . . . . . . 44
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 45
Intellectual Property and Copyright Statements . . . . . . . . . . 46
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1. Open Issues/TODOs
o Align MIB with other drafts, esp. the Sampling Techniques one.
o Is the selecting all method mandatory for all implementations?
o Describe row status objects to writable tables.
o Elaborate conformance statements.
o Add option template id to each parameter set for exporting option
data.
o Check data type for "microseconds", protocol type, port, template
id and maybe some others.
o Need to achieve a common layout and naming on the different MIB
parts.
o Elaborate security considerations, particularly concerning SET
operations.
2. 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 PSAMP devices performing packet selection
by sampling, filtering and hashing.
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 packet samples to
a collector is modeled according to [I-D.ietf-psamp-protocol]. The
exporter uses the IPFIX protocol as specified in [I-D.ietf-ipfix-
protocol].
The MIB presented here is a module of the IPFIX MIB [I-D.dietz-ipfix-
mib]. It starts at an Object ID in the IPFIX MIB and imports the
textual conventions defined there.
3. PSAMP Documents Overview
PSAMP Framework: [I-D.ietf-psamp-framework] "A Framework for Packet
Selection and Reporting" The document describes the PSAMP
framework for network elements to select subsets of packets by
statistical and other methods, and to export a stream of reports
on the selected packets to a collector. Definitions of
terminology and the use of the terms "must", "should" and "may" in
this document are informational only.
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PSAMP Sampling Techniques: [I-D.ietf-psamp-sample-tech] "Sampling and
Filtering Techniques for IP Packet Selection", describes the set
of packet selection techniques supported by PSAMP.
PSAMP MIB: "Definitions of Managed Objects for Packet Sampling" (this
document) describes the PSAMP Management Information Base.
PSAMP Protocol: [I-D.ietf-psamp-protocol] "Packet Sampling (PSAMP)
Protocol Specifications" specifies the export of packet
information from a PSAMP Exporting Process to a PSAMP Colleting
Process.
PSAMP Information Model: [I-D.ietf-psamp-info] "Information Model for
Packet Sampling Exports" defines an information and data model for
PSAMP.
Section 5 describes the structure of the PSAMP MIB module and section
6 contains the formal definition. Security issues are finally
discussed in section 7.
4. 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].
5. Structure of the PSAMP MIB module
The PSAMP MIB module is structure according to the sample techniques
document [I-D.ietf-psamp-sample-tech]. The main structure follows
the building blocks of the PSAMP framework [I-D.ietf-psamp-
framework], describing sampling/filtering at an observation point
then exporting the collected information to one or more collectors.
The objects needed for exporting the information and describing and
configuring the selection methods used in the metering process are
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already defined in the IPFIX MIB Exporter Module [I-D.dietz-ipfix-
mib].
The PSAMP MIB Module contains parameter sets for the sampling and
filtering methods described in [I-D.ietf-psamp-sample-tech]. The
sampling and filtering methods and their parameter sets are
controlled by three groups of objects: The sampling group, the
filtering group and the hash functions group. The sampling group and
the filtering group define the parameters for the sampling and
filtering methods. The hash functions group defines the available
hash functions for hash based filtering. Finally we have the
statistics group that represent all objects collecting the optional
statistical values like packets observed by a hash function or
reports sent to a collector.
In the next sections we will briefly describe every object group and
its usage.
5.1. The Sampling Group
The first group of objects contains information about sampling
methods. Each sampling method is covered by an individual sub-tree
of this group. The following objects are defined for each method
except the first: a sub-group of objects indicating specific
capabilities and limits of the method that may be empty if no
capabilities or limits are available, and a sub-group specifying sets
of parameters in a table. Each row in the parameter set table
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]. The PSAMP MIB document specifies all methods defined
in the sample tech document. If some object need further
specification then OBJECT IDENTIFIERS are used as pointers to
functions or parameters that are out of the scope of this document.
They can be implemented in a vendor specific way or may be documented
in another document or a later version of this document. An
implementer may specify e.g., one or more functions used for non-
uniform probabilistic sampling. The seven methods specified in this
document 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.
5.1.1. Selecting All Packets
This trivial packet selection method is alway available. If it is
applied, all packets will be selected.
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5.1.2. 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,
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.
5.1.3. 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.
5.1.4. 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 psampSampRandOutOfNMaxSample the maximum size of n supported by
the implementation.
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 psampSampRandOutOfNSample gives
the number of elements n taken from the parent population N. With
these two parameters you sample n packets out of N.
5.1.5. Uniform Probabilistic Sampling
The uniform probabilistic sampling method has no capabilities and
only one parameter in the psampSampUniProbParamSetTable, the
psampSampUniProbProbability. This object gives the probability that
a packet is sampled. The probability is equal for every packet. The
given 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).
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5.1.6. Non-Uniform Probabilistic Sampling
The non-uniform probabilistic sampling method has also no
capabilities defined. The psampSampNonUniProbParamSetTable contains
two parameters, the psampSampNonUniProbFunction and the
psampSampNonUniProbFuncParam. Those two objects point to the
function that computes the probability that a packet is sampled and
the parameters used for that function. The definition of the
function and its parameters is implementation dependent and beyond
the scope of this document.
5.1.7. Flow State Sampling
The capabilities and parameter set of the flow state sampling method
are equal to those of the non-uniform probabilistic sampling method.
There are no capabilities defined and the
psampSampFlowStateParamSetTable hold two parameters pointing to the
flow state function and the parameters used by the flow state
function (psampSampFlowStateFunction and
psampSampFlowStateFuncParam). Again the function and its parameters
are implementation dependent and beyond the scope of this document.
5.2. The Filtering Methods Group
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 match filtering, the
hash filtering and the router state filtering.
5.2.1. Match Filtering
The match filtering method has no capabilities defined and contains
four parameters in the psampFilterMatchParamSetTable: The
psampFilterMatchFieldId contain the PSAMP or IPFIX field id defined
in the information model as reference what to match. The
psampFilterMatchStartValue and psampFilterMatchStopValue contain the
start and stop value to match the content against. In this way you
can match e.g., a range x-z of transport protocol ports by specifying
the field id that represents the transport protocol port and giving x
as start value and y as stop value. If a single value should be
matched than start and stop value must be equal. A mask
psampFilterMatchMask can be applied if it is applicable for the field
id. The encoding of the values is dependent on the field id and has
to be done according to the PSAMP protocol document.
5.2.2. Hash Filtering
Capabilities are not specified for the hash filtering method. But
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according to the sample tech document [I-D.ietf-psamp-sample-tech]
ten parameters are defined in the psampFilterHashParamSetTable. The
psampFilterHashAddrType specifies the address type to hash - either
IPv4 or IPv6. Then psampFilterHashHeaderBits specifies a bit mask
applied to the packet header selecting the bits to hash from the
packet header. Then psampFilterHashPayloadBytes gives the number of
payload bytes that should be included in the hashing. The final bits
that are selected from the payload bytes are masked with the
psampFilterHashPayloadBits.
The above parameters specified what gets feed into the hash function.
The following parameters specify the hash function itself. The
psampFilterHashFunction points to a hash function and
psampFilterHashFuncParam point to a function specific parameter set
for the hashing function. The number of input and output bits for
the hash function is specified with psampFilterHashInputBits and
psampFilterHashOutputBits. Finally the output may be masked with the
psampFilterHashOutputMask. The results gained by applying all those
parameters are then compared with the psampFilterHashSelection. The
psampFilterHashSelection contains the hash value ranges or single
hash values that get selected. The psampFilterHashSelection is a
human readable string containing only the ASCII characters 0-9, a-f,
comma(,) and dash(-). The ASCII string is defined as follows:
selections := selection | selections,selection
selection := range | value
range := value-value
value := 0x[0-9,a-f]* | [1-9][0-9]*
The two hash functions given in the sample tech document can be
referenced within this parameter set table and are also contained in
this PSAMP MIB document.
5.2.3. Router State Filtering
The router state filtering does also not specify any capabilities.
The parameter table psampFilterRStateParamSetTable contains six
parameters to specify the router state to filter against. The first
object psampFilterRStateFunction defines one of nine functions that
may be used as router state.
other: an other router state function that is not defined here. Then
psampFilterRStateVendorFunc points to the implementation specific
function that is used.
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ingressIf: packets that enter the probe at the interface specified by
psampFilterRStateIfIndex are matched.
egressIf: packets that leave the probe at the interface specified by
psampFilterRStateIfIndex are matched.
aclViolation: packets that violate the access control list are
matched.
rpfFailure: packets for that the reverse path forwarding fails are
matched.
noResources: packets for that not enough resources are allocated will
be matched.
noRoute: packets that could not be routed further are matched.
originAS: packets that originate in an autonomous system specified by
the range of psampFilterRStateStartAS and psampFilterRStateStopAS
are matched.
destAS: packets whose destination is in an autonomous system
specified by the range of psampFilterRStateStartAS and
psampFilterRStateStopAS are matched.
The parameter psampFilterRStateIfIndex defaults to 0 if not used.
The parameters psampFilterRStateStartAS and psampFilterRStateStopAS
default to 0 if they are not used. If a single autonomous system
number should be matched psampFilterRStateStopAS remains 0.
5.3. The Hash Functions Group
The hash function group specifies the two hash functions defined in
the sample tech document [I-D.ietf-psamp-sample-tech]. The hash
functions are defined here so that they can be referenced by the hash
filter above. The design of the hash function part of the MIB SHOULD
be taken as a guideline for vendor specific hash function
definitions.
The two hash functions IPSX and Bob have both an empty parameter set
table since they both take now additional parameters than those
specified in the hash filter method. Other hash functions of course
could specify additional parameters.
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6. Definition
PSAMP-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Integer32, Unsigned32, mib-2
FROM SNMPv2-SMI -- RFC2578
TEXTUAL-CONVENTION, DateAndTime, DisplayString, RowStatus,
TruthValue
FROM SNMPv2-TC -- RFC2579
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- RFC2580
InterfaceIndexOrZero
FROM IF-MIB -- RFC2863
InetAddressType, InetAddress, InetAutonomousSystemNumber
FROM INET-ADDRESS-MIB -- RFC3291
PsampMethodAvailability, ipfixMIB, ipfixGroupMetering,
ipfixGroupReporting
FROM IPFIX-EXPORTER-MIB;
psampMIB MODULE-IDENTITY
LAST-UPDATED "200606221200Z" -- 22 June 2006
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.
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Copyright (C) The Internet Society (2006). 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 "200606221200Z" -- 22 June 2006
DESCRIPTION
"Initial version, published as RFC yyyy."
-- RFC Ed.: replace yyyy with actual RFC number & remove this notice
::= { ipfixMIB 3 }
-- 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
--==================================================================
psampSampCountBased OBJECT IDENTIFIER ::= { psampSamplingMethods 1 }
psampSampCountBasedAvail OBJECT-TYPE
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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 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 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
interval length and the spacing."
::= { psampSampCountBased 3 }
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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
"PSAMP-SAMPLE-TECH, Section 5.1"
-- Editor Note: get reference right!
::= { psampSampCountBasedParamSetEntry 2 }
psampSampCountBasedSpacing OBJECT-TYPE
SYNTAX Unsigned32
UNITS "number of packets"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When retrieved, this object specifies the sampling spacing
for systematic count-based sampling."
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REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { 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 maximum number
that can be specified for the sampling interval."
::= { psampSampTimeBasedCap 1 }
psampSampTimeBasedMaxSpacing OBJECT-TYPE
SYNTAX Unsigned32
UNITS "microseconds"
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"When retrieved, this object indicates 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. It is used in entries
of the psampInstanceTable as reference to this parameter
set."
::= { psampSampTimeBasedParamSetEntry 1 }
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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"
-- Editor Note: get reference right!
::= { 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"
-- Editor Note: get reference right!
::= { 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 of
random n-out-of-N sampling at the managed node."
DEFVAL { notAvailable }
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::= { 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 maximum number
that can be specified for the population size."
::= { psampSampRandOutOfNCap 1 }
psampSampRandOutOfNMaxSample OBJECT-TYPE
SYNTAX Unsigned32
UNITS "number of packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"When retrieved, this object indicates 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 psampSampRandOutOfNParamSetTable."
INDEX { psampSampRandOutOfNIndex }
::= { psampSampRandOutOfNParamSetTable 1 }
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PsampSampRandOutOfNParamSetEntry ::=
SEQUENCE {
psampSampRandOutOfNIndex Integer32,
psampSampRandOutOfNPopulation Unsigned32,
psampSampRandOutOfNSample 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"
-- Editor Note: get reference right!
::= { psampSampRandOutOfNParamSetEntry 2 }
psampSampRandOutOfNSample 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"
-- Editor Note: get reference right!
::= { psampSampRandOutOfNParamSetEntry 3 }
psampSampRandOutOfNRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
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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 ++++++++++++++++++++++++++++++++++++++++++++++++++++
-- 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
DESCRIPTION
"Defines an entry in the psampSampUniProbParamSetTable."
INDEX { psampSampUniProbIndex }
::= { psampSampUniProbParamSetTable 1 }
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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"
-- Editor Note: get reference right!
::= { 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
--==================================================================
psampSampNonUniProb OBJECT IDENTIFIER ::= { psampSamplingMethods 5 }
psampSampNonUniProbAvail OBJECT-TYPE
SYNTAX PsampMethodAvailability
MAX-ACCESS read-only
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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,
psampSampNonUniProbFuncParam OBJECT IDENTIFIER,
psampSampNonUniProbRowStatus RowStatus
}
psampSampNonUniProbIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
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
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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"
-- Editor Note: get reference right!
::= { psampSampNonUniProbParamSetEntry 2 }
psampSampNonUniProbFuncParam OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When retrieved, this object specifies the parameter set for
the function specified with psampSampNonUniProbFunction
that is used to compute the probability for sampling."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampSampNonUniProbParamSetEntry 3 }
psampSampNonUniProbRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampSampNonUniProbParamSetEntry 4 }
--==================================================================
--* 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
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flow state sampling at the managed node."
DEFVAL { notAvailable }
::= { psampSampFlowState 1 }
-- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++
psampSampFlowStateParamSetTable OBJECT-TYPE
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,
psampSampFlowStateFuncParam 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
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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"
-- Editor Note: get reference right!
::= { psampSampFlowStateParamSetEntry 2 }
psampSampFlowStateFuncParam OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When retrieved, this object specifies the parameter set for
the function specified with psampSampFlowStateFunction that
is used to determine the packet that is to be sampled."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampSampFlowStateParamSetEntry 3 }
psampSampFlowStateRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampSampFlowStateParamSetEntry 4 }
--==================================================================
-- Packet selection filtering methods group of objects
--==================================================================
psampFilteringMethods OBJECT IDENTIFIER ::= { psampObjects 2 }
--==================================================================
--* Method 0: Match filtering
--==================================================================
psampFilterMatch OBJECT IDENTIFIER ::= { psampFilteringMethods 0 }
psampFilterMatchAvail OBJECT-TYPE
SYNTAX PsampMethodAvailability
MAX-ACCESS read-only
STATUS current
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 24]
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DESCRIPTION
"When retrieved, this object indicates the availability of
match filtering at the managed node."
DEFVAL { notAvailable }
::= { psampFilterMatch 1 }
-- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++
psampFilterMatchParamSetTable OBJECT-TYPE
SYNTAX SEQUENCE OF
PsampFilterMatchParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists configurations of match filtering. The
match filtering is based on the IPFIX/PSAMP Information
Elements. The parameter set contains the Field Id, a value
or value range and a mask."
::= { psampFilterMatch 3 }
psampFilterMatchParamSetEntry OBJECT-TYPE
SYNTAX PsampFilterMatchParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines an entry in the psampFilterMatchParamSetTable."
INDEX { psampFilterMatchIndex }
::= { psampFilterMatchParamSetTable 1 }
PsampFilterMatchParamSetEntry ::=
SEQUENCE {
psampFilterMatchIndex Integer32,
psampFilterMatchFieldId Integer32,
psampFilterMatchStartValue OCTET STRING,
psampFilterMatchStopValue OCTET STRING,
psampFilterMatchMask OCTET STRING,
psampFilterMatchRowStatus RowStatus
}
psampFilterMatchIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index of this parameter set in the
psampFilterMatchParameterSetTable. It is used in entries of
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the psampInstanceTable as reference to this parameter set."
::= { psampFilterMatchParamSetEntry 1 }
psampFilterMatchFieldId OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The id of the field that is encoded as the FieldId defined
in the IPFIX/PSAMP Information Models."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1, ipfix and
psamp info model!!"
-- Editor Note: get reference right!
::= { psampFilterMatchParamSetEntry 2 }
psampFilterMatchStartValue OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of the field or the start of the value range if
psampFilterMatchStopValue is not equal to this value. The
data type and its encoding is the same as in PSAMP-PROTO."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1, PROTO!!"
-- Editor Note: get reference right!
::= { psampFilterMatchParamSetEntry 3 }
psampFilterMatchStopValue OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The final value of a value range. It should be equal to
psampFilterMatchStartValue if a single value should be
encoded. The data type and its encoding is the same as in
PSAMP-PROTO."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1, PROTO!!"
-- Editor Note: get reference right!
::= { psampFilterMatchParamSetEntry 4 }
psampFilterMatchMask OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 26]
Internet-Draft PSAMP MIB June 2006
"The value of the field is a mask like the netmask for IP
addresses if this is applicable for the given field Id
psampFilterMatchFieldId or empty if not. The data type and
its encoding is the same as in PSAMP-PROTO."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1, PROTO!!"
-- Editor Note: get reference right!
DEFVAL { ''H }
::= { psampFilterMatchParamSetEntry 5 }
psampFilterMatchRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampFilterMatchParamSetEntry 6 }
--==================================================================
--* 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 }
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
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parameter set describing a configuration contains ten
parameter describing the hash function, the input bits feed
into the hash function and the output of the function."
::= { 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,
psampFilterHashAddrType InetAddressType,
psampFilterHashHeaderBits OCTET STRING,
psampFilterHashPayloadBytes Integer32,
psampFilterHashPayloadBits OCTET STRING,
psampFilterHashFunction OBJECT IDENTIFIER,
psampFilterHashFuncParam OBJECT IDENTIFIER,
psampFilterHashInputBits Integer32,
psampFilterHashOutputBits Integer32,
psampFilterHashOutputMask OCTET STRING,
psampFilterHashSelection DisplayString,
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 }
psampFilterHashAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The address type the hash function is applied to (either
IPv4 or IPv6 packets)."
REFERENCE
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 28]
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"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 2 }
psampFilterHashHeaderBits OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (40))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The object specifies the header bits used for hashing. The
size is 40 bytes but when psampFilterHashAddrType is IPv4
then only the first 20 bytes are used."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 3 }
psampFilterHashPayloadBytes OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The number of bytes of payload used as input to the hash
function."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 4 }
psampFilterHashPayloadBits OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The object specifies the payload bits used for hashing. The
size depends on the value of psampFilterHashPayloadBytes."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 5 }
psampFilterHashFunction OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When retrieved, this object specifies the the hash function
executed by the current filtering method."
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::= { psampFilterHashParamSetEntry 6 }
psampFilterHashFuncParam OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When retrieved, this object specifies the the paramters
used in addition to those specified in this table."
::= { psampFilterHashParamSetEntry 7 }
psampFilterHashInputBits OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The number of bits used as input key to the hash function.
Usually this should be in the form of 2^x."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 8 }
psampFilterHashOutputBits OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The number of bits that form the output value of the hash
function. Usually this should be in the form of 2^x."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 9 }
psampFilterHashOutputMask OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The mask applied to the output bits of the hash function.
If less hash values are needed the number of hashes can be
reduced by masking the output value. The size is dependent
on the number of output bits. If the output mask is empty
then no mask is applied."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 30]
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DEFVAL { ''H }
::= { psampFilterHashParamSetEntry 10 }
psampFilterHashSelection OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object represents the hash values that select a
packet. It is represented in a human readable form. The
only allowed characters are [0-9a-f,-x]. A single hash
value is represented by its decimal ASCII notation or if
prefixed with 0x by its hexadecimal ASCII notation. A range
can be given by hash_value - hash_value and several single
values or ranges are separated by , (comma). So, if you
with to select hash values 0, 5 - 10 and 250-255 you could
specify: 0,5-10,0xfa-0xff"
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterHashParamSetEntry 11 }
psampFilterHashRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampFilterHashParamSetEntry 12 }
--==================================================================
--* 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
router state filtering at the managed node."
DEFVAL { notAvailable }
::= { psampFilterRState 1 }
-- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 31]
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-- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++
psampFilterRStateParamSetTable OBJECT-TYPE
SYNTAX SEQUENCE OF
PsampFilterRStateParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists configurations of router state filtering.
A parameter set describing a configuration contains six
parameters: the router state function executed, and then
some parameters that are used dependent on the router state
function, like interface index or autonomous system number
range."
::= { psampFilterRState 3 }
psampFilterRStateParamSetEntry OBJECT-TYPE
SYNTAX PsampFilterRStateParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines an entry in the psampFilterRStateParamSetTable."
INDEX { psampFilterRStateIndex }
::= { psampFilterRStateParamSetTable 1 }
PsampFilterRStateParamSetEntry ::=
SEQUENCE {
psampFilterRStateIndex Integer32,
psampFilterRStateFunction INTEGER,
psampFilterRStateNegate TruthValue,
psampFilterRStateIfIndex InterfaceIndexOrZero,
psampFilterRStateStartAS InetAutonomousSystemNumber,
psampFilterRStateStopAS InetAutonomousSystemNumber,
psampFilterRStateVendorFunc OBJECT IDENTIFIER,
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 }
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psampFilterRStateFunction OBJECT-TYPE
SYNTAX INTEGER {
other (1),
ingressIf (2),
egressIf (3),
aclViolation (4),
rpfFailure (5),
noResources (6),
noRoute (7),
originAS (8),
destAS (9)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object indicates which function is applied to the
router state. The validity of the following objects depends
on the function selected here. The psampFilterRStateIfIndex
is only valid if the function is ingressIf or egressIf. The
psampFilterRstateStartAS/StopAS objects are only valid if
the function is originAS or destAS. The
psampFilterRStateVendor object is only valid if the function
other is chosen. Then it point to a vendor specific
function."
REFERENCE
"draft-ietf-psamp-sample-tech-04.txt, Section 5.1"
-- Editor Note: get reference right!
::= { psampFilterRStateParamSetEntry 2 }
psampFilterRStateNegate OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If set to true this object will negate the output of the
psampFilterRStateFunction."
DEFVAL { false }
::= { psampFilterRStateParamSetEntry 3 }
psampFilterRStateIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Used if the function is egressIf or ingressIf. Selects
the packet if the egressIf/ingressIf is the same as the
interface indicated by this object. If the object is not
used it contains a value of 0."
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DEFVAL { 0 }
::= { psampFilterRStateParamSetEntry 4 }
psampFilterRStateStartAS OBJECT-TYPE
SYNTAX InetAutonomousSystemNumber
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Used if the function is originAS or destAS. Selects the
packet if the AS Number lies in the range of
psampFilterRStateStartAS and psampFilterRStateStopAS. If
the object is not used it default to 0."
DEFVAL { 0 }
::= { psampFilterRStateParamSetEntry 5 }
psampFilterRStateStopAS OBJECT-TYPE
SYNTAX InetAutonomousSystemNumber
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Used if the function is originAS or destAS. Selects the
packet if the AS Number lies in the range of
psampFilterRStateStartAS and psampFilterRStateStopAS. If
psampFilterRStateStartAS is not 0 and this object is 0 then
the range is single value, the value given in
psampFilterRStateStartAS."
DEFVAL { 0 }
::= { psampFilterRStateParamSetEntry 6 }
psampFilterRStateVendorFunc OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Used if the function is any other than those defined here.
In this case a vendor specific router state function is
used. If the object is not used it defaults to
psampFilterRState."
DEFVAL { psampFilterRState }
::= { psampFilterRStateParamSetEntry 7 }
psampFilterRStateRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampFilterRStateParamSetEntry 8 }
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--==================================================================
-- Hash Function Group
--==================================================================
psampHashFunctions OBJECT IDENTIFIER ::= { psampObjects 3 }
--==================================================================
--* Hash Function 0: IPSX
--==================================================================
psampHashIPSX OBJECT IDENTIFIER ::= { psampHashFunctions 0 }
psampHashIPSXAvail OBJECT-TYPE
SYNTAX PsampMethodAvailability
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"When retrieved, this object indicates the availability of
the IPSX hash function at the managed node."
DEFVAL { notAvailable }
::= { psampHashIPSX 1 }
-- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++
psampHashIPSXParamSetTable OBJECT-TYPE
SYNTAX SEQUENCE OF
PsampHashIPSXParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists configurations the IPSX hash function.
Since this hash function takes no additional parameters the
table if available contains only one entry indicating that
the functions exists and can be referenced by the
psampFilterHashParamSetTable."
::= { psampHashIPSX 3 }
psampHashIPSXParamSetEntry OBJECT-TYPE
SYNTAX PsampHashIPSXParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines an entry in the psampHashIPSXParamSetTable."
INDEX { psampHashIPSXIndex }
::= { psampHashIPSXParamSetTable 1 }
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PsampHashIPSXParamSetEntry ::=
SEQUENCE {
psampHashIPSXIndex Integer32,
psampHashIPSXRowStatus RowStatus
}
psampHashIPSXIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index of this parameter set in the
psampHashIPSXParameterSetTable. It is used in entries of
the psampFilterHashParamSetTable as reference to this
parameter set."
::= { psampHashIPSXParamSetEntry 1 }
psampHashIPSXRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampHashIPSXParamSetEntry 2 }
--==================================================================
--* Hash Function 1: Bob
--==================================================================
psampHashBob OBJECT IDENTIFIER ::= { psampHashFunctions 1 }
psampHashBobAvail OBJECT-TYPE
SYNTAX PsampMethodAvailability
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"When retrieved, this object indicates the availability of
the Bob hash function at the managed node."
DEFVAL { notAvailable }
::= { psampHashBob 1 }
-- Capabilities ++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Parameter Set Table +++++++++++++++++++++++++++++++++++++++++++++
psampHashBobParamSetTable OBJECT-TYPE
SYNTAX SEQUENCE OF
PsampHashBobParamSetEntry
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 36]
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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists configurations the Bob hash function.
Since this hash function takes no additional parameters the
table if available contains only one entry indicating that
the functions exists and can be referenced by the
psampFilterHashParamSetTable."
::= { psampHashBob 3 }
psampHashBobParamSetEntry OBJECT-TYPE
SYNTAX PsampHashBobParamSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines an entry in the psampHashBobParamSetTable."
INDEX { psampHashBobIndex }
::= { psampHashBobParamSetTable 1 }
PsampHashBobParamSetEntry ::=
SEQUENCE {
psampHashBobIndex Integer32,
psampHashBobRowStatus RowStatus
}
psampHashBobIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index of this parameter set in the
psampHashBobParameterSetTable. It is used in entries of the
psampFilterHashParamSetTable as reference to this parameter
set."
::= { psampHashBobParamSetEntry 1 }
psampHashBobRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row of the table."
::= { psampHashBobParamSetEntry 2 }
--==================================================================
-- Conformance information
--==================================================================
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psampCompliances OBJECT IDENTIFIER ::= { psampConformance 1 }
psampGroups OBJECT IDENTIFIER ::= { psampConformance 2 }
--==================================================================
-- Compliance statements
--==================================================================
psampCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"An implementation that complies to this module must
implement the objects defined in the mandatory groups
ipfixGroupMetering and ipfixGroupReporting. The
implementation of all other objects depends on the
implementation of the corresponding functionality in the
equipment."
MODULE -- this module
MANDATORY-GROUPS {
psampGroupSelectAll,
ipfixGroupMetering,
ipfixGroupReporting
}
GROUP psampGroupSampCountBased
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupSampTimeBased
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupSampRandOutOfN
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupSampUniProb
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupSampNonUniProb
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupSampFlowState
DESCRIPTION
"These objects must be implemented if the corresponding
sampling function is implemented in the equipment."
GROUP psampGroupFilterMatch
DESCRIPTION
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 38]
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"These objects must be implemented if the corresponding
filter function is implemented in the equipment."
GROUP psampGroupFilterHash
DESCRIPTION
"These objects must be implemented if the corresponding
filter function is implemented in the equipment."
GROUP psampGroupFilterRState
DESCRIPTION
"These objects must be implemented if the corresponding
filter function is implemented in the equipment."
GROUP psampGroupHashIPSX
DESCRIPTION
"These objects must be implemented if the corresponding
hash function is implemented in the equipment."
GROUP psampGroupHashBob
DESCRIPTION
"These objects must be implemented if the corresponding
hash function is implemented in the equipment."
::= { psampCompliances 1 }
--==================================================================
-- MIB groupings
--==================================================================
psampGroupSelectAll OBJECT-GROUP
OBJECTS {
psampSelectAllAvail
}
STATUS current
DESCRIPTION
"The select all Method that must be present on all PSAMP
complient devices."
::= { psampGroups 1 }
psampGroupSampCountBased OBJECT-GROUP
OBJECTS {
psampSampCountBasedAvail,
psampSampCountBasedMaxInterval,
psampSampCountBasedMaxSpacing,
psampSampCountBasedInterval,
psampSampCountBasedSpacing,
psampSampCountBasedRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if count based sampling is
implemented."
::= { psampGroups 2 }
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 39]
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psampGroupSampTimeBased OBJECT-GROUP
OBJECTS {
psampSampTimeBasedAvail,
psampSampTimeBasedMaxInterval,
psampSampTimeBasedMaxSpacing,
psampSampTimeBasedInterval,
psampSampTimeBasedSpacing,
psampSampTimeBasedRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if time based sampling is
implemented."
::= { psampGroups 3 }
psampGroupSampRandOutOfN OBJECT-GROUP
OBJECTS {
psampSampRandOutOfNAvail,
psampSampRandOutOfNMaxPopulation,
psampSampRandOutOfNMaxSample,
psampSampRandOutOfNPopulation,
psampSampRandOutOfNSample,
psampSampRandOutOfNRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if random n-out-of-N sampling is
implemented."
::= { psampGroups 4 }
psampGroupSampUniProb OBJECT-GROUP
OBJECTS {
psampSampUniProbAvail,
psampSampUniProbProbability,
psampSampUniProbRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if uniform probabilistic sampling
is implemented."
::= { psampGroups 5 }
psampGroupSampNonUniProb OBJECT-GROUP
OBJECTS {
psampSampNonUniProbAvail,
psampSampNonUniProbFunction,
psampSampNonUniProbFuncParam,
psampSampNonUniProbRowStatus
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 40]
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}
STATUS current
DESCRIPTION
"These objects are needed if non-uniform probabilistic
sampling is implemented."
::= { psampGroups 6 }
psampGroupSampFlowState OBJECT-GROUP
OBJECTS {
psampSampFlowStateAvail,
psampSampFlowStateFunction,
psampSampFlowStateFuncParam,
psampSampFlowStateRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if flow state sampling is
implemented."
::= { psampGroups 7 }
psampGroupFilterMatch OBJECT-GROUP
OBJECTS {
psampFilterMatchAvail,
psampFilterMatchFieldId,
psampFilterMatchStartValue,
psampFilterMatchStopValue,
psampFilterMatchMask,
psampFilterMatchRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if match filtering is implemented."
::= { psampGroups 8 }
psampGroupFilterHash OBJECT-GROUP
OBJECTS {
psampFilterHashAvail,
psampFilterHashAddrType,
psampFilterHashHeaderBits,
psampFilterHashPayloadBytes,
psampFilterHashPayloadBits,
psampFilterHashFunction,
psampFilterHashFuncParam,
psampFilterHashInputBits,
psampFilterHashOutputBits,
psampFilterHashOutputMask,
psampFilterHashSelection,
psampFilterHashRowStatus
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 41]
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}
STATUS current
DESCRIPTION
"These objects are needed if hash filtering is implemented."
::= { psampGroups 9 }
psampGroupFilterRState OBJECT-GROUP
OBJECTS {
psampFilterRStateAvail,
psampFilterRStateFunction,
psampFilterRStateNegate,
psampFilterRStateIfIndex,
psampFilterRStateStartAS,
psampFilterRStateStopAS,
psampFilterRStateVendorFunc,
psampFilterRStateRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if router state filtering is
implemented."
::= { psampGroups 10 }
psampGroupHashIPSX OBJECT-GROUP
OBJECTS {
psampHashIPSXAvail,
psampHashIPSXRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if the IPSX hash function is
implemented."
::= { psampGroups 11 }
psampGroupHashBob OBJECT-GROUP
OBJECTS {
psampHashBobAvail,
psampHashBobRowStatus
}
STATUS current
DESCRIPTION
"These objects are needed if the Bob hash function is
implemented."
::= { psampGroups 12 }
END
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7. 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.
8. IANA Considerations
This document requires no assignment to be made by IANA.
9. Acknowledgment
This document is a product of the PSAMP working group.
10. References
10.1. Normative References
[I-D.ietf-psamp-framework]
Duffield, N., "A Framework for Packet Selection and
Reporting", draft-ietf-psamp-framework-10 (work in
progress), January 2005.
[I-D.ietf-psamp-sample-tech]
Zseby, T., "Sampling and Filtering Techniques for IP
Packet Selection", draft-ietf-psamp-sample-tech-07 (work
in progress), July 2005.
[I-D.ietf-psamp-protocol]
Claise, B., "Packet Sampling (PSAMP) Protocol
Specifications", draft-ietf-psamp-protocol-05 (work in
progress), April 2006.
[I-D.ietf-ipfix-protocol]
Claise, B., "IPFIX Protocol Specification",
draft-ietf-ipfix-protocol-20 (work in progress),
April 2006.
[I-D.dietz-ipfix-mib]
Dietz, T., Kobayashi, A., and B. Claise, "Definitions of
Managed Objects for IP Flow Information Export",
draft-dietz-ipfix-mib-00 (work in progress), June 2006.
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 43]
Internet-Draft PSAMP MIB June 2006
[RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "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.
10.2. Informative References
[I-D.ietf-psamp-info]
Dietz, T., "Information Model for Packet Sampling
Exports", draft-ietf-psamp-info-04 (work in progress),
March 2006.
[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.
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 44]
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Authors' Addresses
Thomas Dietz (editor)
NEC Europte Ltd.
Network Laboratories
Kurfuersten-Anlage 36
Heidelberg 69115
DE
Phone: +49 6221 4342-128
Email: dietz@netlab.nec.de
Benoit Claise
Cisco Systems
De Kleetlaan 6a b1
Degem 1831
BE
Phone: +32 2 704 5622
Email: bclaise@cisco.com
Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 45]
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Acknowledgment
Funding for the RFC Editor function is currently provided by the
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Dietz & Claise draft-ietf-psamp-mib-06.txt [Page 46]