SIST EN IEC 61784-2-0:2023

Industrial networks - Profiles - Part 2-0: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - General concepts and terminology (IEC 61784-2-0:2023)

IEC 61784-2-0:2023 specifies:
basic principles of performance indicators expressing RTE performance of a CP (see 5.1);
how an application-dependent class could be used to find out a suitable CP to meet application requirements (see 5.2);
characteristics of RTE performance indicators (see 5.3);
the methodology of a conformance test for an RTE end device for one or more CPs (see Clause 6).

Industrielle Kommunikationsnetze - Profile - Teil 2-0: Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Allgemeine Konzepte und Terminologie (IEC 61784-2-0:2023)

Réseaux industriels – Profils – Partie 2-0: Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur l’ISO/IEC/IEEE 8802-3 – Concepts généraux et terminologie (IEC 61784-2-0:2023)

L'IEC 61784-2-0:2023 spécifie:
les principes de base des indicateurs de performance exprimant la performance RTE d’un CP (voir 5.1);
la façon dont une classe dépendante de l’application peut être utilisée pour rechercher un CP adapté aux exigences d’une application (voir 5.2);
les caractéristiques des indicateurs de performance RTE (voir 5.3);
la méthodologie d’un essai de conformité d’un élément final RTE pour un ou plusieurs CP (voir l’Article 6).

Industrijska omrežja - Profili - 2-0. del: Dodatni profili procesnih vodil v realnem času po ISO/IEC 8802-3 - Splošni koncept in terminologija (IEC 61784-2-0:2023)

Skupina standardov IEC 61784-2 določa dodatne komunikacijske profile (CP) za obstoječe družine komunikacijskih profilov (CPF) iz skupine standardov IEC 61784-1 in dodatne družine komunikacijskih profilov z vsaj enim ali komunikacijskim profilom. Ti dodatni komunikacijski profili temeljijo na skupini standardov IEC 61158 in skupini standardov IEC 61784-1 ter uporabljajo določbe iz standarda ISO/IEC/IEEE 8802-3 (splošno znan kot ethernet) za nižje komunikacijske ravni. Ti komunikacijski profili Real-Time Ethernet (RTE) zagotavljajo soobstoj komunikacijskih rešitev Real-Time Ethernet in aplikacij na osnovi standarda ISO/IEC/IEEE 8802-3.
OPOMBA 1: Vsi komunikacijski profili temeljijo na standardih ali osnutkih standardov ali mednarodnih standardih, ki jih je objavila komisija IEC, oziroma na standardih ali mednarodnih standardih, ki so jih določili drugi organi za standarde ali procesi odprtih standardov.
OPOMBA 2: Komunikacijski profili RTE uporabljajo komunikacijska omrežja v skladu s standardom ISO/IEC 8802-3 in z njimi povezane omrežne komponente ali IEC 61588 ter v nekaterih primerih za pridobitev funkcij RTE te standarde spremenijo.
Ta del standarda IEC 61784-2 določa:
– skupno terminologijo za vse družine komunikacijskih profilov v skupini standardov IEC 61784-2 (glej točke od 3.1 do 3.3);
– dogovore, ki jih je treba uporabiti v specifikaciji komunikacijskih profilov RTE (glej 3.4);
– kako naj se navede skladnost naprave z družino komunikacijskih profilov ali komunikacijskim profilom (glej točko 4).
Ta dokument določa tudi:
– osnovna načela kazalnikov uspešnosti, ki izražajo uspešnost RTE komunikacijskega profila (glej 5.1);
– kako bi se lahko razred, ki je odvisen od aplikacije, uporabil za iskanje ustreznega komunikacijskega profila za izpolnitev zahtev aplikacije (glej 5.2);
– značilnosti kazalnikov uspešnosti RTE (glej 5.3);
– metodologijo preskusa skladnosti za končno napravo RTE za enega ali več komunikacijskih profilov (glej točko 6).

General Information

• Status: Published
• Publication Date: 05-Oct-2023
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• ICS: 35.100.20 - Data link layer
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jul-2023
• Due Date: 08-Sep-2023
• Completion Date: 06-Oct-2023
• Ref Project: EN IEC 61784-2-0:2023 - Industrial networks - Profiles - Part 2-0: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 - General concepts and terminology

Relations

• Splited From: SIST EN IEC 61784-2:2019 - Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC 8802-3 (IEC 61784-2:2019)
• Effective Date: 18-Apr-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2023
Industrijska omrežja - Profili - 2-0. del: Dodatni profili procesnih vodil v realnem
času po ISO/IEC 8802-3 - Splošni koncept in terminologija (IEC 61784-2-0:2023)
Industrial networks - Profiles - Part 2-0: Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3 - General concepts and terminology (IEC 61784-2-0:2023)
Industrielle Kommunikationsnetze - Profile - Teil 2-0: Zusätzliche Feldbusprofile für
Echtzeitnetzwerke basierend auf ISO/IEC/IEEE 8802-3 - Allgemeine Konzepte und
Terminologie (IEC 61784-2-0:2023)
Réseaux industriels Profils Partie 2-0: Profils de bus de terrain supplémentaires pour
les réseaux en temps réel fondés sur lISO/IEC/IEEE 8802-3 Concepts généraux et
terminologie (IEC 61784-2-0:2023)
Ta slovenski standard je istoveten z: EN IEC 61784-2-0:2023
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.05 Večslojne uporabniške Multilayer applications
rešitve
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61784-2-0

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2023
ICS 35.100.20; 35.240.50 Supersedes EN IEC 61784-2:2019 (partially)
English Version
Industrial networks - Profiles - Part 2-0: Additional real-time
fieldbus profiles based on ISO/IEC/IEEE 8802-3 - General
concepts and terminology
(IEC 61784-2-0:2023)
Réseaux industriels - Profils - Partie 2-0: Profils de bus de Industrielle Kommunikationsnetze - Profile - Teil 2-0:
terrain supplémentaires pour les réseaux en temps réel Zusätzliche Feldbusprofile für Echtzeitnetzwerke basierend
fondés sur l'ISO/IEC/IEEE 8803-3 - Concepts généraux et auf ISO/IEC/IEEE 8802-3 - Allgemeine Konzepte und
terminologie Terminologie
(IEC 61784-2-0:2023) (IEC 61784-2-0:2023)
This European Standard was approved by CENELEC on 2023-04-26. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61784-2-0:2023 E

European foreword
The text of document 65C/1209/FDIS, future edition 1 of IEC 61784-2-0, prepared by SC 65C
"Industrial networks" of IEC/TC 65 "Industrial-process measurement, control and automation" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61784-2-0:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-01-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-04-26
document have to be withdrawn
This document, together with other parts of the same series, partially supersedes EN IEC 61784-
2:2019 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61784-2-0:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 61158-1:2023 NOTE Approved as EN IEC 61158-1:2023 (not modified)
IEC 61158-2 NOTE Approved as EN IEC 61158-2
IEC 61158-3 (series) NOTE Approved as EN 61158-3 (series)
IEC 61158-4 (series) NOTE Approved as EN 61158-4 (series)
IEC 61158-5 (series) NOTE Approved as EN 61158-5 (series)
IEC 61158-6 (series) NOTE Approved as EN 61158-6 (series)
IEC 61784-1-0 NOTE Approved as EN IEC 61784-1-0
IEC 61918:2018 NOTE Approved as EN IEC 61918:2018 (not modified)
IEC 61918:2018/AMD1:2022 NOTE Approved as EN IEC 61918:2018/A1:2022 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61158 series Industrial communication networks - EN IEC 61158 series
Fieldbus specifications
IEC 61784-1 series Industrial communication networks - EN IEC 61784-1 series
Profiles Part 1: Fieldbus profiles
IEC 61784-2 series Industrial communication networks - EN IEC 61784-2 series
Profiles - Part 2: Additional fieldbus profiles
for real-time networks based on
ISO/IEC/IEEE 8802-3
ISO/IEC/IEEE 8802-3 - Telecommunications and exchange - -
between information technology systems -
Requirements for local and metropolitan
area networks - Part 3: Standard for
Ethernet
IEEE Std 802 2014 IEEE Standard for Local and metropolitan - -
area networks: Overview and Architecture
IEEE Std 802.1AB 2016 IEEE Standard for Local and metropolitan - -
area networks: Station and Media Access
Control Connectivity Discovery
IEEE Std 802.1AS 2020 IEEE standard for Local and metropolitan - -
area networks - Timing and
Synchronization for Time-Sensitive
Applications
IEEE Std 802.1Q 2018 IEEE Standard for Local and metropolitan - -
area networks - Media Access Control
(MAC) Bridges and Bridged Networks

IEC 61784-2-0 ®
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial networks – Profiles –
Part 2-0: Additional real-time fieldbus profiles based on ISO/IEC/IEEE 8802-3 –
General concepts and terminology
Réseaux industriels – Profils –
Partie 2-0: Profils de bus de terrain supplémentaires pour les réseaux en temps
réel fondés sur l’ISO/IEC/IEEE 8802-3 – Concepts généraux et terminologie
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6622-9
– 2 – IEC 61784-2-0:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms and acronyms . 10
3.3 Common symbols . 11
3.4 Conventions . 11
3.4.1 Conventions common to all layers . 11
3.4.2 Physical layer . 13
3.4.3 Data-link layer . 13
3.4.4 Application layer . 14
4 Conformance to communication profiles . 14
5 RTE performance indicators . 15
5.1 Basic principles of performance indicators . 15
5.2 Application requirements . 16
5.3 Performance indicators . 16
5.3.1 Delivery time . 16
5.3.2 Number of RTE end-stations . 17
5.3.3 Basic network topology . 17
5.3.4 Number of switches between RTE end-stations . 17
5.3.5 Throughput RTE . 17
5.3.6 Non-RTE bandwidth . 17
5.3.7 Time synchronization accuracy . 17
5.3.8 Non-time-based synchronization accuracy . 18
5.3.9 Redundancy recovery time . 18
6 Conformance tests . 18
6.1 Concept . 18
6.2 Methodology . 19
6.3 Test conditions and test cases . 19
6.4 Test procedure and measuring . 19
6.5 Test report . 20
Bibliography . 21

Figure 1 – Example of graphical representation of consistent indicators . 16
Figure 2 – Conformance test overview . 18

Table 1 – Layout of profile (sub)clause selection tables . 12
Table 2 – Contents of (sub)clause selection tables . 12
Table 3 – Layout of service selection tables . 12
Table 4 – Contents of service selection tables . 13

IEC 61784-2-0:2023 © IEC 2023 – 3 –
Table 5 – Layout of parameter selection tables . 13
Table 6 – Contents of parameter selection tables. 13
Table 7 – Layout of class attribute selection tables . 14
Table 8 – Contents of class attribute selection tables . 14
Table 9 – Basic network topology types . 17

– 4 – IEC 61784-2-0:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL NETWORKS –
PROFILES –
Part 2-0: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
General concepts and terminology

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Attention is drawn to the fact that the use of some of the associated protocol types is restricted
by their intellectual-property-right holders. In all cases, the commitment to limited release of
intellectual-property-rights made by the holders of those rights permits a layer protocol type to
be used with other layer protocols of the same type, or in other type combinations explicitly
authorized by their respective intellectual property right holders.
NOTE Combinations of protocol types are specified in the IEC 61784-1 series and the IEC 61784-2 series.
IEC 61784-2-0 has been prepared by subcommittee 65C: Industrial networks, of IEC technical
committee 65: Industrial-process measurement, control and automation. It is an International
Standard.
This first edition, together with the other parts of the same series, cancels and replaces the
fourth edition of IEC 61784-2 published in 2019. This first edition constitutes a technical revision.

IEC 61784-2-0:2023 © IEC 2023 – 5 –
This edition includes the following significant technical changes with respect to
IEC 61784-2:2019:
a) split of the original IEC 61784-2 into several subparts, one subpart for the material of a
generic nature, and one subpart for each Communication Profile Family specified in the
original document.
The text of this International Standard is based on the following documents:
Draft Report on voting
65C/1209/FDIS 65C/1237/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 61784-2 series, published under the general title
Industrial networks – Profiles – Part 2: Additional real-time fieldbus profiles based on
ISO/IEC/IEEE 8802-3, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 6 – IEC 61784-2-0:2023 © IEC 2023
INTRODUCTION
The IEC 61784-2 series provides additional Communication Profiles (CP) to the existing
Communication Profile Families (CPF) of the IEC 61784-1 series and additional CPFs with one
or more CPs. These profiles meet the industrial automation market objective of identifying Real-
Time Ethernet (RTE) communication networks coexisting with ISO/IEC/IEEE 8802-3 –
commonly known as Ethernet. These RTE communication networks use provisions of
ISO/IEC/IEEE 8802-3 for the lower communication stack layers and additionally provide more
predictable and reliable real-time data transfer and means for support of precise
synchronization of automation equipment.
More specifically, these profiles help to correctly state the compliance of RTE communication
networks with ISO/IEC/IEEE 8802-3, and to avoid the spreading of divergent implementations.
Adoption of Ethernet technology for industrial communication between controllers and even for
communication with field devices promotes the use of Internet technologies in the field area.
This availability would be unacceptable if it causes the loss of features required in the field area
for industrial communication automation networks, such as:
• real-time,
• synchronized actions between field devices like drives,
• efficient, frequent exchange of very small data records.
These new RTE profiles can take advantage of the improvements of Ethernet networks in terms
of transmission bandwidth and network span.
Another implicit but essential requirement is that the typical Ethernet communication
capabilities, as used in the office world, are fully retained, so that the software involved remains
applicable.
The market is in need of several network solutions, each with different performance
characteristics and functional capabilities, matching the diverse application requirements. RTE
performance indicators, whose values will be provided with RTE devices based on
communication profiles specified in the IEC 61784-2 series, enable the user to match network
devices with application-dependent performance requirements of an RTE network.

IEC 61784-2-0:2023 © IEC 2023 – 7 –
INDUSTRIAL NETWORKS –
PROFILES –
Part 2-0: Additional real-time fieldbus profiles
based on ISO/IEC/IEEE 8802-3 –
General concepts and terminology

1 Scope
The IEC 61784-2 series defines additional Communication Profiles (CPs) for the existing
Communication Profile Families (CPFs) of the IEC 61784-1 series and additional CPFs with one
or more CPs. These additional CPs are based on the IEC 61158 series, the IEC 61784-1 series,
and use provisions from ISO/IEC/IEEE 8802-3 (commonly known as Ethernet) for the lower
communication stack layers. These Real-Time Ethernet (RTE) communication profiles provide
Real-Time Ethernet communication solutions able to coexist with ISO/IEC/IEEE 8802-3 based
applications.
NOTE 1 All CPs are based on standards or draft standards or International Standards published by the IEC or on
standards or International Standards established by other standards bodies or open standards processes.
NOTE 2 The RTE communication profiles use ISO/IEC/IEEE 8802-3 communication networks and its related
network components or IEC 61588 and in some cases amend those standards to obtain RTE features.
This part of IEC 61784-2 defines:
• a common terminology for all CPFs in the IEC 61784-2 series (see 3.1 to 3.3);
• conventions to be used in the specification of the RTE communication profiles (see 3.4);
• how conformance of a device to a CPF or a CP should be stated (see Clause 4).
This document also specifies:
• basic principles of performance indicators expressing RTE performance of a CP (see 5.1);
• how an application-dependent class could be used to find out a suitable CP to meet
application requirements (see 5.2);
• characteristics of RTE performance indicators (see 5.3);
• the methodology of a conformance test for an RTE end device for one or more CPs (see
Clause 6).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
NOTE All parts of the IEC 61158 series, as well as the IEC 61784-1 series and the IEC 61784-2 series, are
maintained simultaneously. Cross-references to these documents within the text therefore refer to the editions as
dated in this list of normative references.
IEC 61158 (all parts), Industrial communication networks – Fieldbus specifications
IEC 61784-1 (all parts), Industrial networks – Profiles – Part 1: Fieldbus profiles

– 8 – IEC 61784-2-0:2023 © IEC 2023
IEC 61784-2 (all parts), Industrial networks – Profiles – Part 2: Additional real-time fieldbus
profiles based on ISO/IEC/IEEE 8802-3
ISO/IEC/IEEE 8802-3, Telecommunications and exchange between information technology
systems – Requirements for local and metropolitan area networks – Part 3: Standard for
Ethernet
IEEE Std 802-2014, IEEE Standard for Local and Metropolitan Area Networks: Overview and
Architecture
IEEE Std 802.1AB-2016, IEEE Standard for Local and metropolitan area networks – Station and
Media Access Control Connectivity Discovery
IEEE Std 802.1AS-2020, IEEE Standard for Local and Metropolitan Area Networks – Timing
and Synchronization for Time-Sensitive Applications
IEEE Std 802.1Q-2018, IEEE Standard for Local and Metropolitan Area Networks – Bridges and
Bridged Networks
3 Terms, definitions, abbreviated terms, acronyms, and conventions
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC/IEEE 8802-3,
IEEE Std 802-2014, IEEE Std 802.1AB-2016, IEEE Std 802.1AS-2020, IEEE Std 802.1Q-2018,
and the following, apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
active network
network in which data transmission between non-immediately-connected devices is dependent
on active elements within those intervening devices that form the connection path
[SOURCE: IEC 61918:20
...