Wide Area Directory Deployment - Experiences from TISDAG
RFC 2969

Document Type RFC - Informational (October 2000; No errata)
Last updated 2013-03-02
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Network Working Group                                          T. Eklof
Request for Comments: 2969                                    L. Daigle
Category: Informational                                    October 2000

        Wide Area Directory Deployment - Experiences from TISDAG

Status of this Memo

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

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   The TISDAG (Technical Infrastructure for Swedish Directory Access
   Gateway) project provided valuable insight into the current reality
   of deploying a wide-scale directory service.  This document
   catalogues some of the experiences gained in developing the necessary
   infrastructure for a national (i.e., multi-organizational) directory
   service and pilot deployment of the service in an environment with
   off-the-shelf directory service products.  A perspective on the
   project's relationship to other directory deployment projects is
   provided, along with some proposals for future extensions of the work
   (larger scale deployment, other application areas).

   These are our own observations, based on work done and general
   project discussions.  No doubt, other project participants have their
   own list of project experiences; we don't claim this document is
   exhaustive!

Eklof & Daigle               Informational                      [Page 1]
RFC 2969             Wide Area Directory Deployment         October 2000

Table of Contents

   1.0 Introduction ................................................  2
   1.1 Overview of the TISDAG project ..............................  2
   1.2 Organization of this document ...............................  3
   2.0 The TISDAG project itself ...................................  3
   2.1  TISDAG overview ............................................  3
   2.2 Some successes ..............................................  4
   2.3 Some surprises ..............................................  5
   2.3.1 LDAP objectclasses and the "o" attribute ..................  6
   2.3.1 The Tagged Index Object ...................................  6
   2.3.3  Handling Status Messages .................................  7
   2.3.4  Deployment with Commercial Software ......................  7
   2.4 Some observations ...........................................  7
   2.4.1 Participation of the WDSPs ................................  7
   2.4.2 Index Objects and Referral Index size .....................  8
   2.4.3 Index Object and Query Performance ........................  8
   2.5 Some evolutions .............................................  9
   3.0 Related Projects ............................................ 11
   3.1 The Norwegian Directory of Directories (NDD) ................ 11
   3.2 DESIRE Directory Services ................................... 11
   4.0 Some Directions for TISDAG Next Steps ....................... 12
   4.1 Security support ............................................ 12
   4.2 WDSPs attributes and schemas  ............................... 12
   5.0 Some conclusions ............................................ 13
   6.0 Security Considerations ..................................... 13
   7.0 Acknowledgements ............................................ 13
   8.0 Authors' Addresses .......................................... 13
   9.0 References .................................................. 14
   Appendix -- Specific Software Issues and Deployment Experiences.. 15
   Full Copyright Statement ........................................ 18

1.0 Introduction

1.1 Overview of the TISDAG project

   As described in more detail in [TISDAG], the original intention of
   the TISDAG project was to provide the infrastructure for a national
   whitepages directory service.  To be effective, such an
   infrastructure needed to address the concrete realities of end-users'
   existing client software, as well as the needs of information
   providers ("Whitepages Directory Service Providers" -- WDSPs).  These
   realities include the existence of multiple protocols (so-called
   directory service access protocols, as well as more general Internet
   application protocols such as HTTP and SMTP).  The project was also
   sensitive to the fact that WDSPs have many good reasons for being
   reluctant to relinquish copies of their subscribers' personal data.

Eklof & Daigle               Informational                      [Page 2]
RFC 2969             Wide Area Directory Deployment         October 2000

1.2 Organization of this document

   In an effort to communicate the experiences with this project, from
   conception through implementation and pilot deployment, this document
   is divided into 3 major sections.  The first section reviews specific
   lessons learned by the authors through the TISDAG project and
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