RFC 1431 (rfc1431) - Page 1 of 19


DUA Metrics (OSI-DS 33 (v2))



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Network Working Group                                          P. Barker
Request for Comments: 1431                     University College London
                                                           February 1993


                              DUA Metrics

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard.  Distribution of this memo is
   unlimited.

Abstract

   This RFC is being distributed to members of the Internet community in
   order to solicit their reactions to the proposals contained in it.
   While the issues discussed may not be directly relevant to the
   research problems of the Internet, they may be interesting to a
   number of researchers and implementers.

   This document defines a set of criteria by which a DUA
   implementation, or more precisely a Directory user interface, may be
   judged.  Particular issues covered include terminal requirements;
   style of interface; target user; default object classes and attribute
   types; use of DAP; error handling.  The focus of the note is on
   "white pages" DUAs: this is a reflection of the current information
   base.  Nevertheless much of the document will be applicable to DUAs
   developed for other types of Directory usage.

   Please send comments to the author or to the discussion group ds@CS.UCL.AC.UK>.

Table of Contents

   1.  Overview................................................       2
   2.  General Information.....................................       3
   3.  Conformance to OSI Standards............................       5
       3.1    Directory protocols..............................       5
       3.2    Protocol stacks..................................       5
       3.3    Schema ..........................................       5
       3.4    DIT structure  ..................................       5
   4.  Conformance to Research Community Standards.............       6
   5.  The General Style of the DUA............................       6
   6.  Schema..................................................       7
       6.1    Object Classes and Attribute Types...............       7
       6.2    DIT structure....................................       8
   7.  Entering queries........................................       9



Barker


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