EN 61162-410:2002

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 410: Multiple talkers and multiple listeners - Ship systems interconnection - Transport profile requirements and basic transport profile

Defines the general requirements of the T-profile and three implementations of the T-profile over the Internet V4 (IPV4) protocol suite.

Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt - Digitale Schnittstellen - Teil 410: Mehrere Datensender und mehrere Datenempfänger - Schiffssystemzusammenschaltung - Anforderungen an Transportprofile und Basistransportprofil

Matériels et systèmes de navigation et de radiocommunications maritimes - Interfaces numériques - Partie 410: Emetteurs multiples et récepteurs multiples - Interconnexion des systèmes embarqués - Exigences de la couche transport et couche transport de base

Pomorska navigacijska in radiokomunikacijska oprema in sistemi – Digitalni vmesniki - 410. del: Več govorcev (pošiljateljev) in več poslušalcev (prejemnikov); povezava sistemov - Zahteve transportnih profilov in osnovni transportni profil

General Information

• Status: Published
• Publication Date: 18-Feb-2002
• Withdrawal Date: 31-Jan-2005
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: CLC/SR 80 - Maritime navigation and radiocommunication equipment and systems
• Drafting Committee: IEC/TC 80 - IEC_TC_80
• Parallel Committee: IEC/TC 80 - IEC_TC_80
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 02-Aug-2023
• Completion Date: 23-Sep-2025
• Ref Project: SIST EN 61162-410:2004 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces -- Part 410: Multiple talkers and multiple listeners - Ship systems interconnection - Transport profile requirements and basic transport profile

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2004
3RPRUVNDQDYLJDFLMVNDLQUDGLRNRPXQLNDFLMVNDRSUHPDLQVLVWHPL±'LJLWDOQL
YPHVQLNLGHO9HþJRYRUFHYSRãLOMDWHOMHYLQYHþSRVOXãDOFHYSUHMHPQLNRY
SRYH]DYDVLVWHPRY=DKWHYHWUDQVSRUWQLKSURILORYLQRVQRYQLWUDQVSRUWQLSURILO
Maritime navigation and radiocommunication equipment and systems - Digital interfaces
-- Part 410: Multiple talkers and multiple listeners - Ship systems interconnection -
Transport profile requirements and basic transport profile
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt -
Digitale Schnittstellen -- Teil 410: Mehrere Datensender und mehrere Datenempfänger -
Schiffssystemzusammenschaltung - Anforderungen an Transportprofile und
Basistransportprofil
Matériels et systèmes de navigation et de radiocommunications maritimes - Interfaces
numériques -- Partie 410: Emetteurs multiples et récepteurs multiples - Interconnexion
des systèmes embarqués - Exigences de la couche transport et couche transport de
base
Ta slovenski standard je istoveten z: EN 61162-410:2002
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61162-410
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2002
ICS 47.020.70
English version
Maritime navigation and radiocommunication equipment and systems -
Digital interfaces
Part 410: Multiple talkers and multiple listeners –
Ship systems interconnection –
Transport profile requirements and basic transport profile
(IEC 61162-410:2001)
Matériels et systèmes de navigation Navigations- und Funkkommunikations-
et de radiocommunications maritimes - geräte und -systeme für die
Interfaces numériques Seeschifffahrt –
Partie 410: Emetteurs multiples Digitale Schnittstellen
et récepteurs multiples - Teil 410: Mehrere Datensender
Interconnexion des systèmes embarqués - und mehrere Datenempfänger -
Exigences de la couche transport et Schiffssystemzusammenschaltung -
couche transport de base Anforderungen an Transportprofile
(CEI 61162-410:2001) und Basistransportprofil
(IEC 61162-410:2001)
This European Standard was approved by CENELEC on 2002-02-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61162-410:2002 E
Foreword
The text of document 80/311/FDIS, future edition 1 of IEC 61162-410, prepared by IEC TC 80,
Maritime navigation and radiocommunication equipment and systems, was submitted to the IEC-
CENELEC parallel vote and was approved by CENELEC as EN 61162-410 on 2002-02-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-02-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B, C and D are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61162-410:2001 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61162-410:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
1)
IEC 61162-400 - Maritime navigation and EN 61162-400 -
radiocommunication equipment and
systems - Digital interfaces
Part 400: Multiple talkers and multiple
listeners - Ship systems interconnection
- Introduction and general principles
1)
ISO 8802-3 - Information technology - --
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements - Part 3: Carrier sense
multiple access with collision detection
(CSMA/CD) access method and
physical layer specifications
1)
ISO/IEC 9595 - Information technology - --
Open Systems Interconnection -
Common management information
service
1)
ISO/IEC 9596-1 - Information technnology - --
Open Systems Interconnection -
Common management information
protocol -- Part 1: Specification
RFC 768 1980 User Datagram Protocol (UDP), Internet--
Activities Board recommended standard
RFC 793 1981 Transmission Control Protocol (TCP),--
Internet Activities Board recommended
standard
RFC 826 1982 Address Resolution Protocol (ARP),--
Internet Activities Board elective
standard
1)
Undated reference.
Publication Year Title EN/HD Year
RFC 894 1984 Internet Protocol on Ethernet Networks,--
Internet Activities Board elective
standard
RFC 1157 1990 Simple Network Management Protocol--
(SNMP)
RFC 1189 1990 Common Management Information--
Services and Protocols for the Internet
(CMOT and CMIP)
RFC 1213 1991 Management Information Base for--
Network Management of TCP/IP-based
Internets: MIB-II
RFC 1305 1992 Network Time Protocol, Version 3 ---
Specification and Implementation
RFC 2030 1996 Simple Network Time Protocol (SNTP),--
Version 4 for IPv4, IPv6 and OSI
RFC 2500 1999 Inernet Official Protocol Standards ---
Internet Activities Board standard

INTERNATIONAL IEC
STANDARD
61162-410
First edition
2001-11
Maritime navigation and radiocommunication
equipment and systems –
Digital interfaces –
Part 410:
Multiple talkers and multiple listeners –
Ship systems interconnection –
Transport profile requirements
and basic transport profile
 IEC 2001  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
XB
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61162-410  IEC:2001(E)
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope and object .8
2 Normative references.9
3 Definitions .10
4 Transport layer service specification .15
4.1 General .15
4.2 T-profile network and host computer addressing .15
4.2.1 Introduction .15
4.2.2 Addressing scheme .15
4.2.3 Unique and singular hosts on the network .16
4.2.4 Non-segmented logical network .16
4.2.5 Size of network .16
4.3 Communication services requirements.16
4.3.1 Introduction .16
4.3.2 Connectivity and data transfer internally and externally.16
4.3.3 Service classes.16
4.4 Time services .19
4.4.1 General .19
4.4.2 Services .19
4.5 Management services.20
4.5.1 General .20
4.5.2 Services .20
4.6 Graceful degradation facility.21
5 Transport layer interface (TLI).21
5.1 Overview .21
5.1.1 LNAC and TLI.22
5.2 General principles.22
5.2.1 TLI, TP network service classes and connection points .22
5.2.2 Connection point capabilities.23
5.2.3 Attributes of TP network.25
5.2.4 Attributes of connection point .26
5.2.5 Connection point states.26
5.3 TLI service overview .29
5.3.1 General .29
5.3.2 TLI management services .29
5.3.3 Connection point management.30
5.3.4 Data management .33
6 T-profile for redundant Internet .36
6.1 Introduction .36
6.1.1 Rationale for the use of Internet protocols .36
6.1.2 Relationship to basic Internet protocols .36
6.1.3 Rationale for use of Ethernet.37

61162-410  IEC:2001(E) – 3 –
6.2 Transport profile architecture .37
6.2.1 General .37
6.2.2 Redundancy.38
6.2.3 Communication services .39
6.3 Message formats .39
6.3.1 General format.39
6.3.2 Special reliable link messages .40
6.3.3 Broadcast messages.40
6.4 Reliable stream protocol .41
6.4.1 Introduction .41
6.4.2 Connection management .41
6.4.3 Data transmission .45
6.4.4 Data reception .46
6.4.5 Link close .47
6.5 Reliable message service .47
6.5.1 Introduction .47
6.5.2 Data reception .47
6.5.3 Data transmission on the urgent link .47
6.6 Unreliable message service .47
6.6.1 Introduction .47
6.6.2 Connection management .47
6.6.3 Message length limitation.49
6.6.4 Data transmission .49
6.6.5 Data reception .49
6.7 Time services .50
6.7.1 Introduction .50
6.7.2 Time management architecture.50
6.7.3 Client interfaces.50
6.7.4 System integration requirements .51
6.8 Network management services .51
6.8.1 Introduction .51
6.8.2 Physical architecture.51
6.8.3 Required safety precautions.51
6.8.4 NMA requirements .51
6.8.5 Network element requirements.51
7 T-profile for non-redundant Internet.52
7.1 Introduction .52
7.2 Relationship to redundant Internet protocol .52
7.3 Redundancy .52
7.4 Reliable stream protocol .53
7.5 Reliable message service .53
7.6 Unreliable message service .53
7.7 Time services .53
7.8 Network management services .53
8 T-profile for wide area networks (MAU-LNA communication link) .53
8.1 Introduction .53
8.1.1 General architecture .53
8.1.2 TP network and NNN code definitions .54

– 4 – 61162-410  IEC:2001(E)
8.2 Relationship to non-redundant Internet T-profile.54
8.3 Reliable stream service .55
8.4 Reliable message service .55
8.5 Other services .55
Annex A (informative) Typical software library structure.56
Annex B (informative) Channel synchronization example .57
Annex C (informative) NTP and SNTP overview.58
Annex D (informative) Overview of Internet network management services .59

61162-410  IEC:2001(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 410: Multiple talkers and multiple listeners –
Ship systems interconnection –
Transport profile requirements and basic transport profile
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61162-410 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems
The text of this standard is based on the following documents:
FDIS Report on voting
80/311/FDIS 80/326/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
The special typographical conventions and nomenclature used in this standard are defined in
IEC 61162-400 annex A.
– 6 – 61162-410  IEC:2001(E)
Annexes A, B, C and D are for information only.
The committee has decided that the contents of this publication will remain unchanged until
June 2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
61162-410  IEC:2001(E) – 7 –
INTRODUCTION
International Standard IEC 61162 is a four-part standard which specifies four digital interfaces
for applications in marine navigation, radiocommunication and system integration.
The four parts are:
IEC 61162-1 Single talker and multiple listeners
IEC 61162-2 Single talker and multiple listeners, high speed transmission
IEC 61162-3 Multiple talkers and multiple listeners – Serial data instrument network
IEC 61162-4 Multiple talkers and multiple listeners – Ship systems interconnection.
Part 4 of the standard is subdivided into a number of individual standards with part numbers in
the 400 series.
This part of the standard contains the specification of the requirements to an IEC 61162-4
transport profile (T-profile) and also the specification of one implementation, based on
redundant Ethernet and Internet protocol functionality. The T-profile is the protocol transport
mechanisms that offer simple message or byte stream transport services to the higher protocol
layers (defined in other parts of the standard). In addition, the T-profile also offers services for
time distribution and physical network management.
The use of Internet and Ethernet protocols offer low cost and high efficiency data transport in
any kind of system. However, for safety related applications, certain measures have to be
taken to avoid that particulars of office-quality and off-the-shelf technology create safety risks.
This part of the standard specifies mechanisms by which a certain degree of quality of service
can be guaranteed from these networks, including the provision of redundancy.
Other T-profile documents will be prepared with specifications of the same T-profile require-
ments over other transport protocols. This will be issued in the same number series as this
standard (IEC 61162-41x).
Relationship with the other parts of the IEC 61162 series of standards is defined in annex B to
IEC 61162-400.
– 8 – 61162-410  IEC:2001(E)
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 410: Multiple talkers and multiple listeners –
Ship systems interconnection –
Transport profile requirements and basic transport profile
1 Scope and object
This part of IEC 61162-4 defines the general requirements of the T-profile and three
implementations of the T-profile over the Internet V4 (IPV4) protocol suite. Part 400 of this
standard defines the relationship between the different protocol levels (T-profile, A-profile and
companion standards) and part 401 defines the A-profile, the immediate user of the protocol
level defined in this part.
The different components of the IEC 61162-4 standard are defined in IEC 61162-400. The
T-profile is the specification of the communication services and the communication protocols
used by the LNA to implement the A-profile functionality. Basically, the T-profile consists of the
following components:
a) a transport layer interface (TLI) definition that specifies the services and the semantics that
will be available to the application level of the LNA (and in some cases the MAU). This
includes data transport as well as time and network management services. The TLI will be
general to all T-profiles and is defined in this part 410 of the standard,
b) A T-profile protocol definition that specifies how the services provided by the TLI and
additional time distribution and physical network management services are implemented on
the protocol level. This part 410 contains a number of alternative T-profile protocol
specifications using the Internet V4 series of standards. Additional parts of this standard
will address other T-profiles based on other protocol families.
Note that the time distribution and network management functionality may or may not include
specific TLI services. For some systems this functionality may be interfaced to directly by the
underlying operating system. Note also that time distribution and network management are not
strictly speaking transport related protocol functionality. However, the implementation of these
services is normally dependent on the transport protocols in use and is, thus, placed in the
T-profile part of the standard.
The purpose of this standard is to define and describe the services that will be provided at the
transport level interface in a way which is completely independent of the underlying network
environment as well as defining one possible implementation of these services over the
Internet V4 protocols. The separation of service and protocol definitions allows the
specification of several different transport profiles, each one dedicated to a specific network
environment, and to use the same transport service interface in all cases.
Clause 4 defines the transport level services and clause 5 describes the transport layer
interface through which the services are offered. These clauses define the general, network
independent services.
Clause 6 defines the transport profile architecture for redundant Ethernet and Internet
protocols version 4 (IPV4). Clause 7 defines the architecture for a local area non-redundant
Internet network. These clauses define two specific implementations of the T-profile services.

61162-410  IEC:2001(E) – 9 –
Clause 8 defines a simple MAU-LNA protocol for use over wide area network (WAN) TCP/IP
links. This can be used to implement a WAN architecture for the overall system. The WAN
architecture is not intended for integrated ship control systems, but can be used for remote test
integration and remote maintenance and diagnostics. The WAN protocol can also be used to
support MAUs that are located in other host computers than the LNA, but on one local network
(conformance class 4).
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61162. For dated references, subsequent amendments
to, or revisions of, any of these publications do not apply. However, parties to agreements
based on this part of IEC 61162 are encouraged to investigate the possibility of applying the
most recent editions of the normative documents indicated below. For undated references, the
latest edition of the normative document referred to applies. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 61162-400, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 400: Multiple talkers and multiple listeners – Ship systems interconnection –
Introduction and general principles
ISO 8802-3, Information technology – Telecommunications and information exchange between
systems – Local and metropolitan area networks – Specific requirements – Part 3: Carrier
sense multiple access with collision detection (CSMA/CD) access method and physical layer
specifications
ISO/IEC 9595: Information technology – Open Systems Interconnection – Common manage-
ment information service
ISO/IEC 9596-1: Information technology – Open Systems Interconnection – Common manage-
ment information protocol – Part 1: Specification
RFC 768:1980, User Datagram Protocol (UDP), Internet Activities Board recommended
standard
RFC 793:1981, Transmission Control Protocol (TCP), Internet Activities Board recommended
standard
RFC 826:1982, Address Resolution Protocol (ARP), Internet Activities Board elective standard
RFC 894:1984, Internet Protocol on Ethernet Networks, Internet Activities Board elective
standard
RFC 1157:1990, Simple Network Management Protocol (SNMP)
RFC 1189:1990, Common Management Information Services and Protocols for the Internet
(CMOT and CMIP)
RFC 1213:1991, Management Information Base for Network Management of TCP/IP-based
Internets: MIB-II
RFC 1305:1992, Network Time Protocol, Version 3 – Specification and Implementation
RFC 2030:1996, Simple Network Time Protocol (SNTP), Version 4 for IPv4, IPv6 and OSI
RFC 2500:1999, Internet Official Protocol Standards – Internet Activities Board standard

– 10 – 61162-410  IEC:2001(E)
NOTE RFC (request for comments) is a document, issued by the Internet engineering task force (IETF) the
International standardization body for the Internet, that describes a part of the Internet protocol. Some RFCs are
accepted as official Internet standards and listed in the “Internet Official Protocol Standards” itself an RFC.
3 Definitions
For the purpose of this part of IEC 61162, the definitions in IEC 61162-400 and the following
definitions apply:
3.1
broadcast
see multicast
3.2
CL – connectionless
a connectionless communication means that sender and receiver do not have to know each
other. There is no association established between sender(s) and receiver(s) before messages
are sent (see also peer-to-peer and client-server)
3.3
client-server
a client-server communication link is established by the client after a server has allowed the
connection attempt by the establishment of a listening connection point. The client is the active
part while the server allows the connection (see also connectionless and peer-to-peer)
3.4
CMIP – common management information protocol
see ISO/IEC 9595 and ISO/IEC 9596-1
3.5
CMIS – common management information services
see ISO/IEC 9595 and ISO/IEC 9596-1
3.6
CMOT – CMIS/CMIP over TCP/IP
an Internet proposed standard protocol. Its status is elective (see RFC 1189)
3.7
CO – connection-oriented
the opposite of CL (connectionless). A data exchange where an association between sender
and receiver exists
3.8
connection point
an entity that can represent a communication link end point (for established connections) or a
connection attempt between two host computers in some state. It is also used for
connectionless communication, but in this case it represents just the local host computer’s port
to the network
3.9
Ethernet
refers to a carrier sense multiple access collision detect (CSMA/CD) local area network
protocol standard as defined in ISO/IEC 8802-3. The medium access control (MAC) frame
format shall use the Internet protocol type (0800) in the length/protocol field (see RFC 894).
Any type of Ethernet can be used in systems compliant with this standard as long as they fulfil
relevant technical requirements and the system integrator ensures compatibility between the
integrated components. The most relevant technologies are:

61162-410  IEC:2001(E) – 11 –
• 10Base-5 – thick coaxial, shared media bus – can be used in environments that require
noise immunity;
• 10Base-2 – thin (RG58) coaxial, shared media bus – can be used in environments with low
noise immunity requirements;
• 10Base-T – shielded or unshielded twisted pair – used in conjunction with a repeating or
switching hub;
• 10Base-F – fibre optic media, as above, but for very high noise immunity applications;
• 100Base-TX – shielded or unshielded twisted pair, as above. Note that this medium
requires special precautions to extend network lengths beyond 200 m;
• 100Base-FX – fibre optic, as previous, but for very high noise immunity.
The recommended solution is the use of non-duplex switching hubs with 10 and/or 100 megabit
links to the host computers.
The system integrator must make sure that the relevant physical characteristics of the selected
network solution satisfies the requirements defined in ISO/IEC 8802-3 and other applicable
standards
3.10
ICMP – Internet control message protocol
an integral part of the Internet protocols (see 3.12)
3.11
IGMP – Internet group management protocol
a protocol used between hosts and multicast routers on a single physical network to establish
hosts' membership in particular multicast groups. Multicast routers use this information, in
conjunction with a multicast routing protocol, to support IP multicast forwarding across the
Internet. The IGMP standard is part of the Internet RFC system, but is currently not used in this
standard
3.12
IP – Internet protocol.
refers to RFC 2500. All required parts as defined by that document shall be implemented in an
Internet compliant protocol stack. It is also required that the system in question implements the
ARP (see RFC 826) address resolution protocol. Optionally, other address resolution schemes
can be used at the discretion of the system integrator.
RFC 2500 will give additional information as to which additional standards apply to conforming
implementations of the Internet protocol.
RFC 1918 lists a set of reserved private address spaces that can be used for a ship-board
control network that must not be connected to off-ship or other ship-board Internets. For the
purpose of this standard, it is recommended that the following network addresses are used:
172.16.0.1 to 172.16.255.254 (network mask 255.255.0.0 – class B)
3.13
IPV4 – Internet protocol version 4
the version used in this issue of the standard (see previous subclause)
3.14
IPV6 – Internet protocol version 6
the proposed next generation Internet protocol. It is currently not sufficiently accepted to be
viable as the basis of this standard, but future generations of this standard are expected to
migrate to IPV6
3.15
LAN – local area network
a network within a delimited physical area. Typical for control system networks (see also WAN,
MAN)
– 12 – 61162-410  IEC:2001(E)
3.16
LNAC – LNA communication module interface
a variant of TLI that is dedicated to MAU-LNA communication
3.17
loop-back interface
refers to the loop-back function in the Internet protocol whereby an Internet message can be
sent between two entities on the same network host. The complete class A network number
127 is assigned the “loop-back” function (see RFC1060). The address 127.0.0.1 will be used
for the loop-back
3.18
MA – management agent
an SNMP agent located in a network element (NE)
3.19
MAN – metropolitan area network
a network between LAN and WAN. The area the network covers is more than local, but not
worldwide
3.20
MIB – management information base
basis for physical network management protocol
[RFC 1213]
3.21
MTU – maximum transmission unit
the largest message that can be transmitted over a given T-profile without fragmentation. For
Ethernet, the MTU is 1 500 octets
3.22
multicast
a transport mechanism by which any number of computer hosts can be reached with one
transmitted message. This transport mechanism is referred to as multicast or broadcast. The
T-profile specification defines the actual physical mechanism that is used to implement this
service
3.23
NE – network element
term used within SNMP to identify a managed entity in a network. This is typically a host
computer with its protocol entities, a router, a gateway or a switch
3.24
NMA – network management applications
applications within a NMS
3.25
NMS – network management station
a host computer, with software implementing one or more NMA, that is responsible for physical
network monitoring (see MIB and SNMP)
3.26
NNN – network node number
an identification of one node on a TP network. This is typically the Internet host number
(excluding the network part of the address) for IPV4 networks. The NNN shall be unique and
unambiguous for one node, even if this node is on a redundant network with two different
network addresses. The NNN is a 32-bit unsigned integer

61162-410  IEC:2001(E) – 13 –
3.27
NTP – network time protocol
all references in this standard address the Internet time distribution and synchronization
protocol described in RFC 1305
3.28
OSI – open systems interconnect
this term is defined in IEC 61162-400
3.29
peer-to-peer
a two-way communication link that can be established by both sides concurrently. The T-profile
shall make sure that only one link is established and that the link has the same identification on
both sides (see client-server and connectionless)
3.30
primary network
a redundant network has two independent transport paths between any two nodes (primary and
secondary network). The primary network is the transport path defined as the one that is
normally used when connections are established between the nodes, and that normally is to be
used if non-redundant nodes are attached to the network. However, the T profile will be able to
use the secondary network in the same manner as the primary (i.e. accept incoming connects
that arrive on the secondary network alone). The T-profile may process request on the
secondary network after requests on the primary
3.31
priority
assigns importance to messages or message streams transported through the communication
network. Three levels are defined: urgent, normal and low.
It must (as a minimum) act as a rudimentary bandwidth allocation scheme where high priority
(importance) data is serviced before lower priority data
3.32
QoS – quality of service
degree to which a certain protocol (typically T-profile) supplies certain services to the higher
levels
[IEC 61162-400]
3.33
redundant IPV4
reference to a redundant Internet means a T-profile as defined in clause 6 of this standard.
Where the standard redundant IPV4 network is used (LNADR_IPV4R), the following addresses
are used:
172.16.0.1 to 172.16.255.254 (network mask 255.255.0.0 – “primary”).
172.17.0.1 to 172.17.255.254 (network mask 255.255.0.0 – “secondary”).
Other addresses can be used when the system integrator defines new T-profile networks for
use in a specific implementation (LNADR_IPV4RE).
Both networks will be of the same class (class B for the standard network) and each network
node will have the same node address on the primary and secondary networks.
For all IP networks the following port numbers will be used:

– 14 – 61162-410  IEC:2001(E)
Table 1 – Internet IPV4 protocol port numbers
Port type Protocol Port
LNA-LNA listening port (normal) TCP 23305
LNA-LNA listening port (urgent) TCP 23306
LNA-MAU listening port (normal) TCP 23303
LNA-MAU listening port (urgent) TCP 23304
MAU-MAU stream listening ports TCP 22307-
ABC0 (standard broadcast) UDP 23307 (23308)
ABC1 UDP 23309 (23310)
ABC2 UDP 23311 (23312)
ABC3 UDP 23313 (23314)
ABC4 UDP 23315 (23316)
ABC5 UDP 23317 (23318)
NOTE 1 The port numbers are different from the ones used in MiTS. This is done to support the co-existence of
MiTS and IEC 61162-4 networks.
NOTE 2 The stream ports will be selected by trying different port numbers in sequence, starting with the one
specified.
Two port numbers are listed for each UDP broadcast port. The first number (odd number) is
the mandatory listening (destination) port. The even number in parenthesis is the recom-
mended sending port (source) port. Other sending port numbers can be used if desired in an
implementation.
NOTE Some implementations of UDP can cause problems when the same port number is used for sending and
receiving. A typical problem is that sent broadcast messages are not received by the sending computer itself.
Likewise, two port numbers are used for the message ports to support differentiation between
normal and urgent messages. Implementations that do not support differentiation will use the
normal port (valid for MAU-LNA link only).
The same ports will be used for all IP type networks and on both the primary and secondary
side of a redundant network.
3.34
secondary network
represents the second transport path
See primary network (3.30)
3.35
SMI
structure and identification of management information is a model for description of the
structure of needed information
3.36
SNMP – simple network management protocol
Internet protocol used for physical network management
[RFC 1157]
3.37
TCP/IP – transmission control protocol/Internet protocol
refers to the reliable and stream oriented protocol defined by RFC 793. A system implementing
TCP/IP will also implement the Internet protocol as described above

61162-410  IEC:2001(E) – 15 –
3.38
TPN – TP network
definition of a physical network architecture with all relevant address and network parameters.
IEC 61162-410 defines a number of different TP networks based on the IPV4 family of
protocols
3.39
UDP – user datagram protocol
the unreliable message based protocol defined by RFC 768. A system implementing UDP shall
also implement the Internet protocol as described above
3.40
WAN – wide area network
a network that, in principle, can span the entire world. A typical example is the Internet
4 Transport layer service specification
4.1 General
The transport layer will provide the upper layers (the MAUs and the A-profile) with functions for
the following services:
− communication
...