ISO 15784-2:2024
(Main)Intelligent transport systems — Data exchange involving roadside modules communication — Part 2: Centre to field device communications using Simple Network Management Protocol (SNMP)
Intelligent transport systems — Data exchange involving roadside modules communication — Part 2: Centre to field device communications using Simple Network Management Protocol (SNMP)
This document specifies a mechanism for exchanging data and messages in the following cases: a) exchange between a traffic management centre and ITS roadside equipment for traffic management; b) exchange between ITS roadside equipment used for traffic management. This document is not applicable to: — communication between traffic management centres and in-vehicle units; — communication between ITS roadside equipment and in-vehicle units; — in-vehicle communication; — in-cabinet communication; — motion video transmission from a camera or recorded media. This document is suitable for use when both of the following conditions apply: 1) The data to be exchanged can be defined as one or more elements that can be retrieved or stored – SNMP can support a wide variety of devices and has adopted the concept of a management information base (MIB), which identifies the configuration, control and monitoring parameters for ITS roadside equipment. This standardized approach is commonly used for network management applications for devices such as routers, switches, bridges and firewalls. It is also used in many regions to control devices such as dynamic message signs. 2) Guaranteed, deterministic, real-time exchange of data is not critical – SNMP operations typically require less than 100 ms, but the underlying network can cause multi-second delays in delivering messages or even lost messages; thus, SNMP is not intended for applications that require reliable sub-second communications. This document can be used for: — intermittent exchange of any defined data (normal SNMP operations allow messages to be structured by combining any group of elements into a retrieval or storage request); — repeated, frequent exchanges of the same message structure (with potentially different values), even on relatively low-bandwidth links; NOTE 1 The dynamic object feature, defined in ISO/TS 26048-1, can be used to eliminate a considerable amount of overhead that is normally associated with SNMP communications to make it more suitable for low-bandwidth links. — allowing ITS roadside equipment to issue exception reports when special conditions arise. NOTE 2 Exception reporting uses SNMP notifications in combination with the notification management features defined in ISO/TS 26048-1.
Systèmes intelligents de transport (SIT) — Échange de données impliquant la communication de modules en bordure de route — Partie 2: Communications par dispositif du centre au terrain en utilisant le protocole simple de gestion de réseau (SNMP)
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International
Standard
ISO 15784-2
Second edition
Intelligent transport systems —
2024-06
Data exchange involving roadside
modules communication —
Part 2:
Centre to field device communications
using Simple Network Management
Protocol (SNMP)
Systèmes intelligents de transport (SIT) — Échange de données
impliquant la communication de modules en bordure de route —
Partie 2: Communications par dispositif du centre au terrain en
utilisant le protocole simple de gestion de réseau (SNMP)
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Abbreviated terms . 4
5 Conformance and Conventions . 5
5.1 ASN.1 .5
5.2 SNMP Terminology .5
5.3 Format .5
5.4 Conformance .5
6 Architecture. 5
6.1 ITS services . .5
6.2 Physical view .5
6.3 Communications view .6
7 Requirements . 7
7.1 Overview .7
7.2 Terminology and internal architecture .8
7.3 Message Processing and Dispatching.8
7.4 Applications.8
7.4.1 Entity type .8
7.4.2 Command generator .8
7.4.3 Command responder .8
7.4.4 Notification originator .8
7.4.5 Notification receiver .9
7.4.6 Proxy forwarder .9
7.5 Security models .9
7.5.1 User-based security model .9
7.5.2 Transport security model.9
7.6 View-based access control .10
7.7 Protocol operations .10
7.7.1 General .10
7.7.2 Request ID variation .10
7.8 Transport mappings .10
7.8.1 Port numbers .10
7.8.2 UDP over IPv4 .10
7.8.3 UDP over IPv6 .10
7.8.4 TCP over IPv4 .11
7.8.5 TCP over IPv6 .11
7.8.6 Secure transport .11
7.9 Management information base (MIB) .11
7.9.1 Agent MIBs .11
7.9.2 Notification originator MIBs . 12
7.9.3 Proxy forwarder MIBs . 12
7.9.4 Other supported data . 12
7.10 Context engine ID discovery . 12
8 Performance .12
8.1 Overview . 12
8.2 Default response time . 12
Annex A (informative) Primer for SNMP . 14
Annex B (informative) Encoding examples . 17
iii
Bibliography . 19
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
This second edition cancels and replaces the first edition (ISO 15784-2:2015), which has been technically
revised. It also incorporates the Amendment ISO 15784-2:2015/Amd 1:2020.
The main changes are as follows:
— support for Simple Network Management Protocol (SNMP) versions other than SNMP v
...
International
Standard
ISO 15784-2
Second edition
Intelligent transport systems —
Data exchange involving roadside
modules communication —
Part 2:
Centre to field device communications
using Simple Network Management
Protocol (SNMP)
Systèmes intelligents de transport (SIT) — Échange de données
impliquant la communication de modules en bordure de route —
Partie 2: Communications par dispositif du centre au terrain en
utilisant le protocole simple de gestion de réseau (SNMP)
PROOF/ÉPREUVE
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Abbreviated terms . 4
5 Conformance and Conventions . 5
5.1 ASN.1 .5
5.2 SNMP Terminology .5
5.3 Format .5
5.4 Conformance .5
6 Architecture. 5
6.1 ITS services . .5
6.2 Physical view .5
6.3 Communications view .6
7 Requirements . 7
7.1 Overview .7
7.2 Terminology and internal architecture .8
7.3 Message Processing and Dispatching.8
7.4 Applications.8
7.4.1 Entity type .8
7.4.2 Command generator .8
7.4.3 Command responder .8
7.4.4 Notification originator .8
7.4.5 Notification receiver .9
7.4.6 Proxy forwarder .9
7.5 Security models .9
7.5.1 User-based security model .9
7.5.2 Transport security model.9
7.6 View-based access control .10
7.7 Protocol operations .10
7.7.1 General .10
7.7.2 Request ID variation .10
7.8 Transport mappings .10
7.8.1 Port numbers .10
7.8.2 UDP over IPv4 .10
7.8.3 UDP over IPv6 .10
7.8.4 TCP over IPv4 .11
7.8.5 TCP over IPv6 .11
7.8.6 Secure transport .11
7.9 Management information base (MIB) .11
7.9.1 Agent MIBs .11
7.9.2 Notification originator MIBs . 12
7.9.3 Proxy forwarder MIBs . 12
7.9.4 Other supported data . 12
7.10 Context engine ID discovery . 12
8 Performance .12
8.1 Overview . 12
8.2 Default response time . 12
Annex A (informative) Primer for SNMP . 14
Annex B (informative) Encoding examples . 17
PROOF/ÉPREUVE
iii
Bibliography . 19
PROOF/ÉPREUVE
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
This second edition cancels and replaces the first edition (ISO 15784-2:2015), which has been technically
revised. It also incorporates the Amendment ISO 15784-2:2015/Amd 1:2020.
The main changes are as follows:
— support for Simple Network Management Pr
...
ISO/DISPRF 15784-2:2023(E)
ISO /TC 204/WG 9
Date: 2024-01-09
Secretariat: ANSI
Date: 2024-04-17
Intelligent transport systems — Data exchange involving roadside
modules communication — —
Part 2:
Centre to field device communications using Simple Network
Management Protocol (SNMP)
Systèmes intelligents de transport (SIT) — Échange de données impliquant la communication de modules en
bordure de route —
Partie 2: Communications par dispositif du centre au terrain en utilisant le protocole simple de gestion de
réseau (SNMP)
PROOF
ISO/DISPRF 15784-2:2023(E2024(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii
ii
ISO/DISPRF 15784-2:2023(E2024(en)
Contents Page
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Abbreviated terms . 4
5 Conformance and Conventions . 5
5.1 ASN.1 . 5
5.2 SNMP Terminology. 5
5.3 Format . 5
5.4 Conformance . 5
6 Architecture . 6
6.1 ITS services . 6
6.2 Physical view . 6
6.3 Communications view . 7
7 Requirements . 9
7.1 Overview . 9
7.2 Terminology and internal architecture . 10
7.3 Message Processing and Dispatching . 10
7.4 Applications . 10
7.4.1 Entity type . 10
7.4.2 Command generator . 10
7.4.3 Command responder . 10
7.4.4 Notification originator . 11
7.4.5 Notification receiver . 11
7.4.6 Proxy forwarder . 11
7.5 Security models . 11
7.5.1 User-based security model . 11
7.5.2 Transport security model . 12
7.6 View-based access control . 12
7.7 Protocol operations . 12
7.7.1 General . 12
7.7.2 Request ID variation . 12
7.8 Transport mappings . 12
7.8.1 Port numbers . 12
7.8.2 UDP over IPv4 . 12
7.8.3 UDP over IPv6 . 13
7.8.4 TCP over IPv4 . 13
7.8.5 TCP over IPv6 . 13
7.8.6 Secure transport . 13
7.9 Management information base (MIB) . 14
7.9.1 Agent MIBs . 14
7.9.2 Notification originator MIBs . 14
7.9.3 Proxy forwarder MIBs . 14
7.9.4 Other supported data . 14
iii
iii
ISO/DISPRF 15784-2:2023(E2024(en)
7.10 Context engine ID discovery . 15
8 Performance . 15
8.1 Overview . 15
8.2 Default response time . 15
Annex A (informative) Primer for SNMP . 16
A.1 Overview . 16
A.2 Object types . 16
A.3 SNMP objects . 17
A.4 SNMP messaging . 17
A.5 Message contents . 18
A.6 Communications layers . 18
Annex B (informative) Encoding examples . 19
B.1 Overview . 19
B.2 GetRequest-PDU . 19
B.3 Response-PDU . 20
B.4 SNMPv3 SetRequest-PDU with authentication . 21
Bibliography . 23
Foreword . v
0 Introduction . vi
0.1 Background . vi
0.2 Overview . vi
0.3 Document approach and layout . vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Symbols and abbreviated terms . 4
5 Conformance and Conventions . 5
5.1 ASN.1 . 5
5.2 SNMP Terminology. 5
5.3 Format . 5
5.4 Conformance . 5
6 Architecture . 5
6.1 ITS services . 5
6.2 Physical view . 6
6.3 Communications view . 6
7 Requirements . 7
7.1 Overview . 7
7.2 Terminology and internal architecture .
...
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