ISO/IEC 9594-5:1990/Cor 1:1992

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-- INTERNATIONAL STANDARD ISO/IEC 9594-5 : 1990
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TZ TECHNICAL CORRIGENDUM 1
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Published 1992-10-15
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INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MExflYHAPOfiHAFi OPTAHM3A~MFl l-l0 CTAHAAPTM3A~MM. ORGANISATION INTERNATIONALE DE NORMALISATION
INTERNATIONAL ELECTROTECHNICAL COMMISSION . MExP,YHAPOAHAR 3JlEKTPOTEXHMqECKAFi KOMMCCMR l COMMISSION ELECTROTECHNIQUE INTERNATIONALE
Information technology - Open Systems Interconnection
- The Directory -
Part 5:
Protocol specifications
TECHNICAL CORRIGENDUM 1
- lnterconnexion de systemes ouverts - h ‘annuaire -
Technologies de l’informa tion
Partie 5: Spkification du protocole
RECTIFICATIF TECHNICMJE 1
Technical corrigendum 1 to International Standard ISO/IEC 9594-5 : 1990 was prepared by Joint Technical Committee ISO/IEC
JTC 1, Information technology.
Ref. No. ISO/IEC 9594-5 : 199O/Cor.l : 1992 (E)
UDC 681.3 : 621.39
information interchange, network interconnection, open Systems interconnection, directories, protocols.
Descriptors : data processing ,
0 ISO/IEC 1992
Printed in Switzerland
ISO/IEC 9594-5 : 1990Kor.l : 1992 (E)
Page 5
Clause 7
Add a new subclause 7.5 as follows:
7.5 Versions and the rules of extensibility
The Directory may be distributed and more than two Directory Application Entities may interoperate to
Service a request. The Directory AEs may be implemented conforming to the 1988 edition of the
specification or some future edition, which may or may not be represented by different version numbers.
The version number is negotiated to the highest common version number between two directly binding
Directory AEs.
Note - for examplc a version 1 & 2 DUA may bind to a version 1 DSA with a resulting agreed Version of 1. That DSA
may further bind to a version 1 & 2 DSA with a resulting agrecd Version of 1. Even though both the DUA and this
remote DSA ca-n support version 2, the negotiatcd Versions are 1.
Version negotiation is used only to support must be common
those aspects of communication which
between the two directly bound Directory AEs
Note - for example, basic understanding of PDU exchange (ROSE), common understanding of name resolution would
be aspects that would be agreed through Version negotiation.
A DUA may issue a request conforming to the highest level it supports. Using the rules of extensibility
defined below, that request shall be forwarded to the appropriate DSA that will respond to that request,
regardless of the level of the intervening DSAs. The responding DSA shall function as defined below.
7.5.1 DUA
7.5.1.1 When establishing an association, i.e., binding, utilizing the DAP, the version negotiated shall only
affect the Point to Point aspects of the protocol exchanged between the DUA and the DSA to which it is
connected. Subsequent re
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