©
ISO 2012
Road vehicles — Diagnostic
communication over Internet Protocol
(DoIP) —
Part 2:
Transport protocol and network layer
services
Véhicules routiers — Communication de diagnostic au travers du
protocole internet (DoIP) —
Partie 2: Protocole de transport et services de la couche réseau
INTERNATIONAL
STANDARD
ISO
13400-2
First edition
2012-06-01
Reference number
ISO 13400-2:2012(E)
ISO 13400-2:2012(E)
ii © ISO 2012 – All rights reserved
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ISO 13400-2:2012(E)
© ISO 2012 – All rights reserved iii
Contents Page
Forewor
............................................................................................................................................................................
iv
Introduction
........................................................................................................................................................................ v
1 Scope
...................................................................................................................................................................... 1
2 Normative references
......................................................................................................................................... 1
3 Terms,denitions,symbolsandabbreviatedterms
.................................................................................. 2
3.1 Termsanddenitions ......................................................................................................................................... 2
3.2 Symbols ................................................................................................................................................................. 3
3.3 Abbreviatedterms ............................................................................................................................................... 4
4 Conventions
.......................................................................................................................................................... 5
5 Document overview
............................................................................................................................................ 5
6 Basic requirements for implementation of internet protocols
................................................................ 7
6.1 General considerations ..................................................................................................................................... 7
6.2 Network layer requirements ............................................................................................................................. 8
6.3 Transport Layer requirements ......................................................................................................................... 9
6.4 Application layer requirements — Dynamic host control protocol (DHCP) ...................................... 14
6.5 Application layer requirements — Data transmission order ................................................................. 18
7 DoIP protocol — Technical description
....................................................................................................... 19
7.1 IP-basedvehiclecommunicationprotocol ................................................................................................. 19
7.2 Socket handling ................................................................................................................................................. 41
7.3 Timing and communication parameters .....................................................................................................48
7.4 Logical addressing ........................................................................................................................................... 49
7.5 Communication environments and recommended timings .................................................................. 50
8 Transport layer services
.................................................................................................................................. 50
8.1 General information .......................................................................................................................................... 50
8.2 SpecicationofDoIPlayerserviceprimitives ...........................................................................................52
8.3 Servicedataunitspecication ...................................................................................................................... 53
9 DoIP protocol usage
......................................................................................................................................... 54
9.1 General information .......................................................................................................................................... 54
9.2 Connectionestablishmentandvehiclediscovery ................................................................................... 54
9.3 DoIP session ....................................................................................................................................................... 56
9.4 Vehicle network integration ............................................................................................................................ 58
10 DoIP entity functional requirements
............................................................................................................ 64
11 Communication example message sequence charts
.............................................................................. 64
Bibliography
..................................................................................................................................................................... 67
ISO 13400-2:2012(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13400-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical
and electronic equipment.
ISO 13400 consists of the following parts, under the general title Road vehicles — Diagnostic communication
over Internet Protocol (DoIP):
— Part1:Generalinformationandusecasedenition
— Part 2: Transport protocol and network layer services
— Part 3: Wired vehicle interface based on IEEE 802.3
The following parts are under preparation:
— Part 4: Ethernet diagnostic connector
— Part5:Conformancetestspecication
iv
© ISO 2012 – All rights reserved
ISO 13400-2:2012(E)
Introduction
Vehicle diagnostic communication has been developed starting with the introduction of the rst legislated
emissions-related diagnostics and has evolved over the years, now covering various use cases ranging
from emission-related diagnostics to vehicle-manufacturer-specic applications like calibration or electronic
component software updates.
With the introduction of new in-vehicle network communication technologies, the interface between the
vehicle’s electronic control units and the external test equipment has been adapted several times to address
the specic characteristics of each new network communication technology requiring optimized data link
layer denitions and transport protocol developments in order to make the new in-vehicle networks usable for
diagnostic communication.
With increasing memory size of electronic control units, the demand to update this increasing amount of software
and an increasing number of functions provided by these control units, technology of the connecting network
and buses has been driven to a level of complexity and speed similar to computer networks. New applications
(x-by-wire, infotainment) require high band-width and real-time networks (like FlexRay, MOST), which cannot
be adapted to provide the direct interface to a vehicle. This requires gateways to route and convert messages
between the in-vehicle networks and the vehicle interface to external test equipment.
The intent of ISO 13400 (all parts) is to describe a standardized vehicle interface which
— separates in-vehicle network technology from the external test equipment vehicle interface requirements
to allow for a long-term stable external vehicle communication interface,
— utilizes existing industry standards to dene a long-term stable state-of-the-art communication standard
usable for legislated diagnostic communication as well as for manufacturer-specic use cases, and
— can easily be adapted to new physical and data link layers, including wired and wireless connections, by
using existing adaptation layers.
To achieve this, all parts of ISO 13400 are based on the Open Systems Interconnection (OSI) Basic Reference
Model specied in ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication systems into seven
layers. When mapped on this model, the services specied by ISO 14229-1, ISO 14229-2 and ISO 14229-5
are divided into
a) unied diagnostic services (layer 7), specied in ISO 14229-1, ISO 14229-5, ISO 27145-3,
b) presentation (layer 6):
1) for enhanced diagnostics, specied by the vehicle manufacturer,
2) for WWH-OBD (World-Wide Harmonized On-Board Diagnostics), specied in ISO 27145-2,
SAE J1930-DA, SAE J1939:2011, Appendix C (SPNs), SAE J1939-73:2010, Appendix A (FMI),
SAE J1979-DA, SAE J2012-DA,
c) session layer services (layer 5), specied in ISO 14229-2,
d) transport protocol (layer 4), specied in this part of ISO 13400,
e) network layer (layer 3) services, specied in this part of ISO 13400, and
f) physical and data link services (layers 1 and 2), specied in ISO 13400-3,
in accordance with Table 1.
© ISO 2012 – All rights reserved v
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