RFC 2256 (rfc2256) - Page 2 of 20

A Summary of the X

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RFC 2256                     LDAPv3 Schema                 December 1997


   Implementors are hereby discouraged from deploying LDAPv3 clients or
   servers which implement the update functionality, until a Proposed
   Standard for mandatory authentication in LDAPv3 has been approved and
   published as an RFC.

2. Abstract

   This document provides an overview of the attribute types and object
   classes defined by the ISO and ITU-T committees in the X.500
   documents, in particular those intended for use by directory clients.
   This is the most widely used schema for LDAP/X.500 directories, and
   many other schema definitions for white pages objects use it as a
   basis.  This document does not cover attributes used for the
   administration of X.500 directory servers, nor does it include
   attributes defined by other ISO/ITU-T documents.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [6].

3. General Issues

   This document references syntaxes given in section 6 of this document
   and section 6 of [1].  Matching rules are listed in section 8 of this
   document and section 8 of [1].

   The attribute type and object class definitions are written using the
   BNF form of AttributeTypeDescription and ObjectClassDescription given
   in [1].  Lines have been folded for readability.

4. Source

   The schema definitions in this document are based on those found in
   X.500 [2],[3],[4],[5], and updates to these documents, specifically:

        Sections                Source
        ============            ============
        5.1  - 5.2              X.501(93)
        5.3  - 5.36             X.520(88)
        5.37 - 5.41             X.509(93)
        5.42 - 5.52             X.520(93)
        5.53 - 5.54             X.509(96)
        5.55                    X.520(96)
        6.1                     RFC 1274
        6.2                     (new syntax)
        6.3  - 6.6              RFC 1274
        7.1  - 7.2              X.501(93)
        7.3  - 7.18             X.521(93)



Wahl                        Standards Track
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