Recommendations for an X.500 Production Directory Service (RFC1803)
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2019-Feb-12
Internet Society Requests For Comment (RFCs)
R. Wright: AUTHOR [+5]
This document contains a set of basic recommendations for a country- level X.500 DSA. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.
Network Working Group R. Wright Request for Comments: 1803 Lawrence Berkeley Laboratory Category: Informational A. Getchell Lawrence Livermore National Laboratory T. Howes University of Michigan S. Sataluri AT&T Bell Laboratories P. Yee NASA Ames Research Center W. Yeong Performance Systems International, Inc. June 1995
Recommendations for an X.500 Production Directory Service
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.
This document contains a set of basic recommendations for a country- level X.500 DSA. These recommendations can only be considered a starting point in the quest to create a global production quality X.500 infrastructure. For there to be a true "production quality" X.500 infrastructure more work must be done, including a transition from the 1988 X.500 (plus some Internet extensions) to the 1993 X.500 standard (including the ’93 replication and knowledge model). This document does not discuss this transition.
The ISO/CCITT X.500 Directory standard enables the creation of a single world-wide Directory that contains information about various types of information, including people. In the United States, in mid 1989 NYSERNet (the project was later taken over by Performance Systems International - PSI) started a White-pages Pilot Project (WPP). Several organizations in the US joined this project. The PSI WPP provided the c=US root level master Directory System Agent (DSA) where organizations that joined the pilot were connected. In November 1990, the PARADISE project was started in Europe to provide an international directory service across Europe with international connectivity to the rest of the world. The PARADISE project also operated the "root of the world" DSA that connected each of the
Wright, et al Informational [Page 1]
RFC 1803 X.500 Production Directory Service June 1995
national pilots into a single world-wide Directory Information Tree (DIT), enabling information about people all over the world to be obtainable using an Internet DUA (Directory User Agent).
Much of the criticism of X.500 stems from the lack of a production quality infrastructure. Although there are already well over 500 organizations and 1,000,000 entries in the the X.500 directory, some portions of the directory are still considered a "pilot project". Poor availability of portions of the directory and inconsistent quality of information are two problems that have not been adequately addressed in a number of the X.500 "pilot projects". One of the reasons for this has been a lack of formal service objectives for running an X.500 service, and recommendations for achieving them.
In X.500, the country-level DSAs form the access path for the rest of the world to access directory entries associated with that country’s organizations. Thus, the availability and performance of the country-level DSAs give an upper...