ETSI TS 102 675-1 V1.1.1 (2009-11)

ETSI TS 102 675-1 V1.1.1 (2009-11)
Technical Specification


Satellite Earth Stations and Systems (SES);
Broadband Satellite Multimedia (BSM);
Part 1: Performance Management at the SI-SAP

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2 ETSI TS 102 675-1 V1.1.1 (2009-11)



Reference
DTS/SES-00292
Keywords
architecture, broadband, management,
multimedia, satellite
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3 ETSI TS 102 675-1 V1.1.1 (2009-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 8
4 Objectives of performance management . 9
4.1 Performance Quality Assurance . 10
4.2 Performance Monitoring . 10
4.3 Performance Management Control . 10
4.4 Performance Analysis . 10
5 Information model for performance management . 10
6 Hierarchy (actors and roles) . 12
6.1 Performance Management Operations . 12
6.2 PM Roles . 12
6.2.1 PM traffic node (ST) . 13
6.2.2 PM server (B-NMS). 13
7 Management of BSM performance parameters . 14
7.1 BSM SI-SAP Performance Parameters . 14
7.1.1 Retrieving BSM SI-SAP Performance Parameters . 14
7.1.2 Calculating BSM SI-SAP Performance Parameters . 15
7.1.2.1 QID-level Performance Parameters. 15
7.1.2.1.1 List of IP flows associated to a QID [IP(QID )] and List of SD queues associated to a QID
i
[SD(QID )] . 16
i
7.1.2.1.2 Time from [t ] and type of [m ] last QID modification . 16
mod QID
7.1.2.1.3 Transmission Delay [D ] . 16
T
7.1.2.1.4 Maximum Hardware Delay [D ] . 17
hw
7.1.2.1.5 Rate [R]. 17
7.1.2.1.6 Slack Term [S] . 17
7.1.2.1.7 Traffic Pattern [r, b, p, m, M] . 18
7.1.2.2 SI-SAP-level Performance Parameters . 18
7.1.2.2.1 Number of active QIDs [N ] . 18
QID
7.1.2.2.2 List of QIDs [QID ] . 18
i
7.1.2.2.3 Available Data Rate [R ] . 18
ava
7.1.2.2.4 All-QIDs Transmission Delay [D ] . 18
T
7.1.2.2.5 All-QIDs Maximum Hardware Delay [D ] . 18
hw
7.1.2.2.6 All-QIDs Rate [R]. 18
7.1.2.2.7 All-QIDs Slack Term [S] . 18
7.1.2.3 Summary of QID Elementary Attributes . 19
7.2 BSM IP performance parameters . 19
7.2.1 Tools for Measuring BSM IP performance parameters . 20
7.2.1.1 RMON . 20
7.2.1.2 RTFM . 22
7.2.1.3 IPFIX . 22
7.2.1.4 PSAMP . 23
7.2.1.5 OWAMP . 23
7.2.2 Calculating BSM IP performance parameters. 24
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4 ETSI TS 102 675-1 V1.1.1 (2009-11)
7.2.2.1 Two-Measurement-Points BSM IP Performance Parameters . 24
7.2.2.1.1 IP Packet Transfer Delay (IPTD) and Delay Variation (IPDV) . 25
7.2.2.1.2 IP Packet Loss Ratio (IPLR) . 25
7.2.2.1.3 Spurious IP Packet Rate (SIPR) . 25
7.2.2.1.4 IP Packet Reordered Ratio (IPRR) . 25
7.2.2.1.5 IP Service Availability (IPSA) . 25
7.2.2.2 Single-Measurement-Point BSM IP Performance Parameters . 26
7.2.2.2.1 IP Packet Error Ratio (IPER) . 26
7.2.2.2.2 IP Packet Throughput (IPPT) and Goodput (IPPG) . 26
Annex A (informative): Examples of Performance Management tests . 27
A.1 Active measurements . 27
A.2 Passive measurement . 28
Annex B (informative): IETF MIBs and BSM Performance Objects . 29
History . 31

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5 ETSI TS 102 675-1 V1.1.1 (2009-11)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Satellite Earth Stations and
Systems (SES).
The present document is part 1 of a multi-part deliverable covering Performance Management aspects in "Satellite Earth
Stations and Systems (SES); Broadband Satellite Multimedia (BSM)", as identified below:
Part 1: "Performance Management at the SI-SAP";
Part 2: "Performance Management Information Base".
Introduction
The BSM Technical Reports [i.1], [i.2] and [i.3] outlined the general requirements for performance in BSM networks;
Technical Specifications [1] and [2] have subsequently defined the BSM Management Functional Architecture and the
BSM Performance Parameters respectively. Outside ETSI, ITU and IETF (in the IPPM working group) have also
defined a large number of richly parameterized metrics and protocols to deal with Performance Management (PM);
these parameters and protocols have been taken into account in defining BSM performance parameters ([2] gives
references to ITU and IETF metrics), and to define the PM strategies specified in the present document for BSM
networks.
As a result, the focus of the present document is on setting a clear framework of PM for BSM networks and on trying to
present all M-plane functions and instruments that can be used to manage the defined performance parameters.
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6 ETSI TS 102 675-1 V1.1.1 (2009-11)
1 Scope
The present document defines generic Performance Management in BSM networks based on the management
architecture given in [1].
The present document provides a framework for the possible Management-plane (M-plane) performance-related
strategies, functions, and protocols that can be used to monitor performance parameters in BSM networks.
Performance Management is here understood to be restricted to BSM network performance measurement and
monitoring with all associated supporting functions; this is better explained in clause 4.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 102 672: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia
(BSM); Management Functional Architecture".
[2] ETSI TS 102 673: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia
(BSM); Performance Parameters".
[3] IETF RFC 1213: "Management Information Base for Network Management of TCP/IP-based
internets:MIB-II".
[4] IETF RFC 1445: "Administrative Model for version 2 of the Simple Network Management
Protocol (SNMPv2)".
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7 ETSI TS 102 675-1 V1.1.1 (2009-11)
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI TR 101 984: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia
(BSM); Services and architectures".
[i.2] ETSI TR 101 985: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia;
IP over Satellite".
[i.3] ETSI TR 102 157: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia;
IP Interworking over satellite; Performance, Availability and Quality of Service".
[i.4] ETSI TS 102 292: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia
(BSM) services and architectures; Functional architecture for IP interworking with BSM
networks".
[i.5] ETSI TS 102 464: "Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia
(BSM); Interworking with DiffServ Qos".
[i.6] IETF RFC 3289: "Management Information Base for the Differentiated Services Architecture".
[i.7] IETF RFC 3444: "On the Difference between Information Models and Data Models".
[i.8] ITU-T Recommendation M.3400: "TMN management functions".
[i.9] ITU-T Recommendation P.862 (02/2001): "Perceptual evaluation of speech quality (PESQ): An
objective method for end-to-end speech quality assessment of narrow-band telephone networks
and speech codecs".
[i.10] IETF RFC 2819: "Remote Network Monitoring Management Information Base".
[i.11] IETF RFC 3577: "Introduction to the RMON Family of MIB Modules".
[i.12] IETF RFC 2722: "Traffic Flow Measurement: Architecture".
[i.13] IETF RFC 2720: "Traffic Flow Measurement: Meter MIB".
[i.14] IETF RFC 3917: "Requirements for IP Flow Information Export (IPFIX)".
[i.15] IETF RFC 5101: "Specification of the IP Flow Information Export (IPFIX) Protocol for the
Exchange of IP Traffic Flow Information".
[i.16] RFC 5102: "Information Model for IP Flow Information Export".
[i.17] IETF RFC 5153: "IPFIX Implementation Guidelines".
[i.18] IETF RFC 5470: "Architecture for IP Flow Information Export".
[i.19] IETF RFC 5476: "Packet Sampling (PSAMP) Protocol Specifications".
[i.20] IETF RFC 5477: "Information Model for Packet Sampling Exports".
[i.21] IETF RFC 4656: "A One-way Active Measurement Protocol (OWAMP)".
[i.22] IETF RFC 1229: "Extensions to the generic-interface MIB".
[i.23] IETF RFC 2206: "RSVP Management Information Base using SMIv2".
[i.24] IETF RFC 2213: "Integrated Services Management Information Base using SMIv2".
[i.25] IETF RFC 2214: "Integrated Services Management Information Base Guaranteed Service
Extensions using SMIv2".
[i.26] IETF RFC 2863: "The Interfaces Group MIB".
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8 ETSI TS 102 675-1 V1.1.1 (2009-11)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in [1] and the following apply:
control plane: this has a layered structure and performs the call control and connection control functions; it deals with
the signalling necessary to set up, supervise and release calls and connections
management plane: this provides two types of functions, namely layer management and plane management functions:
- plane management functions: performs management functions related to a system as a whole and provides
co-ordination between all the planes
NOTE: Plane management has no layered structure.
- layer management functions: performs management functions (e.g. meta-signalling) relating to resources
and parameters residing in its protocol entities
NOTE: Layer Management handles the operation and maintenance (OAM) of information flows specific to the
layer concerned.
MIB: (also known as a managed object) one of any number of specific characteristics of a managed device
NOTE: MIBs comprise one or more object instances (identified by their OIDs), which are essentially variables.
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in [1] and the following apply:
B-NMS BSM Network Management System
BSM Broadband Satellite Multimedia
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
FTP File Transfer Protocol
HTTP Hypertext Transfer Protocol
ICMP Internet Control Message Protocol
ICPIF Calculated Planning Impairment Factor
IETF Internet Engineering Task Force
IP Internet Protocol
IPFIX IP Flow Information Export
IPPM IP Performance Metrics
ITU International Telecommunications Union
MIB Management Information Base
MP Measurement Point
MOS Mean Opinion Score
NAP Network Access Provider
OID Object Identifier
OSS Operations Support System
OWAMP One-Way Active Measurement Protocol
PESQ Perceptual Evaluation of Speech Quality
PM Performance Management
QID Queue IDentifier
QoS Quality of Service
RFC Request For Comments
RMON Remote Network Monitoring
RTFM Realtime Traffic Flow Measurement
SLA Service Level Agreement
SNMP Simple Network Management Protocol
SNO Satellite Network Operator
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9 ETSI TS 102 675-1 V1.1.1 (2009-11)
ST Satellite Terminal
VoIP Voice over Internet Protocol
4 Objectives of performance management
Network performance management functionalities are shifting from relatively simple availability measurements to those
based on detailed Quality-of-Service (QoS) performance assessment. This is because network element availability is
generally high and stable, with hardware or software infrastructure failures occurring infrequently, but at the same time
increasing variety of traffic (e.g. voice, video and data), and multi-tiered applications have led to an increase in the
volume and complexity of network traffic.
Hence network management is moving from the limited perspective of "device-aware" network management to a focus
on service delivery - a "service-aware" perspective that is both more comprehensive and more cost-effective. Being
service-aware means that it understands the traffic flowing over the network. Once armed with that understanding,
traffic flows can be prioritised and devices configured based on the value and priority of the important traffic.
Whereas this is true as well for satellite as for terrestrial networks, normally the satellite link represents, from the
performance management point of view, the weak ring in the end-to-end chain; thus one of the key objectives of
Performance Management in satellite networks is ultimately to ensure that Service Level Agreements between the
satellite service provider (SNO, NAP, etc.) and other service providers are met. Hence the aspects of Performance
Management which are of interest to different actors in the network need to be taken into account here.
The objectives of Performance Management can be divided into the following categories (or function set groups
according to ITU classification - see [i.8]):
• Performance Quality Assurance.
• Performance Monitoring.
• Performance Management Control.
• Performance Analysis.
These categories will be briefly explained in the following sub-clauses highlighting those which are relevant for the
present document. It should be then clear to the reader that the document deals primarily with Performance Monitoring
and Performance Analysis (assessment) in BSM networks.
Network performance assessment is, to a greater of lesser extent, included within Performance Monitoring up to the
level of monitoring required. Network performance assessment is based on network traffic measurements, which can be
performed in two ways:
• with active measurements, which are performed by injecting traffic with known properties into the network;
and/or
• with passive measurements, which consist of monitoring the existing traffic flow(s) at one or more
measurement points.
Quality of Service (QoS) is one of the main objectives for network services and is often a main constituent of the SLA
of a given NAP. QoS is directly related to network performance. QoS measurement or assessment lies logically above
network traffic measurements, and relate to the performance of networking applications; they exploit the measurement
data to derive quantitative considerations on the "health" of the network:
• Objective QoS relates to something concrete and quantitative (e.g. packet loss, delay, jitter, connection break
length, etc.);
• Subjective QoS corresponds to the service quality from the user perspective (Mean Opinion Score (MOS) tests
are often used), subjective QoS can be estimated within certain limits from the basis of objective QoS
(e.g. PESQ algorithm [i.9]).
In any case the performance parameters to be considered in BSM networks for performance monitoring and assessment
are those described in [2]; they refer to layer-3 (IP-layer) parameters and only indirectly, through the BSM SI-SAP
parameters (which are generalized representations of specific SD features), to lower-layer parameters.
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10 ETSI TS 102 675-1 V1.1.1 (2009-11)
4.1 Performance Quality Assurance
Performance Quality Assurance supports decision processes that establish, according to current state-of-the-art, SLAs,
and customer needs, the quality measures that are appropriate for a correct performance management. It concerns
setting the alert thresholds, selecting the types of test to perform, the frequency with which to perform tests, etc.
It is up to the BSM network operator how to deal with these decisions and these functions will not be elaborated further
in the present document.
4.2 Performance Monitoring
Performance Monitoring involves the continuous collection of data from the BSM network elements. The basic function
of Performance Monitoring is to track system, network or service activities in order to gather the appropriate data for
determining performance of the BSM network.
The operation is designed to measure the overall quality of the network connections, using monitored parameters in
order to detect service degradation in a timely way. It may also be designed to detect characteristic patterns of
impairment before service quality has dropped below an acceptable level.
These are key operations to be considered when defining the M-plane functions in BSM networks; they will be
addressed in clauses 6 and 7.
4.3 Performance Management Control
Performance Management Control has two main functional areas: on one side it supports the transfer of information to
control the monitoring functions within the network; on the other side it includes the application of traffic controls to
guarantee a proper network operation in terms of performance.
For the former area, the Performance Management Control deals, for example, with configuration of measurement
schedules, sampling intervals, alert thresholds, and other attributes for monitoring and for test traffic, etc. These are also
key operations to be considered when defining the M-plane functions in BSM networks; they will be addressed in
clauses 6 and 7. The present document will mainly refer to this set of functionalities as "Performance Monitoring
Configuration".
The second functional area (enforcement of traffic control policies) may affect the shaping and/or routing of traffic and
the processing of flows. It is very much linked to BSM network operator strategies, so it is considered out of the scope
of the present document and it will not be elaborated further in the present document.
4.4 Performance Analysis
Performance Analysis processes the measurement data and evaluates the performance level of the network and its
elements.
This kind of analysis depends on, and it is in fact derived from, the type of measurement performed. It is up to the BSM
network operator how to define the necessary analysis to be applied on the performed measurements and this will not be
elaborated in details in the present document. Anyway since performance assessment is necessary up to a certain level
and it is part of Performance Analysis some considerations will be given in the clauses 6 and 7.
5 Information model for performance management
BSM Performance Management takes into account measurements at the IP-layer and at the SI-SAP interface between
the BSM and lower layers. Layer-2 issues and layer-2 Measurement Point s (MPs) will not be considered here; so
satellites with On-Board Processing (OBP), as layer-2 MPs, will not be considered in the present document.
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11 ETSI TS 102 675-1 V1.1.1 (2009-11)
Considering the BSM management functional architecture in [1], to simplify the discussion in the present document, it
is assumed that every BSM ST implements a standard MIB-II [3] and SNMPv2 agent [4] (or later
...