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- This is only a rough draft - Megan 04/13/92
-
- Minutes of the 1st meeting of the IETF MHS-DS Working Group
- San Diego, California
- March 17, 1992
- Reported by Kevin Jordan
-
- The first meeting of the MHS-DS Working Group took place on March 17
- in San Diego. The duration of the meeting was two hours, from 10:00
- until 12:00. Despite the shortness of time, very good progress was
- made.
-
- The meeting was co-chaired by:
-
- Harald Tveit Alvestrand of Delab Sintef, Norway
- Kevin Jordan of Control Data Corporation, Arden Hills, Minnesota, USA
-
- After brief introductions and a review of the working group charter,
- Steve Hardcastle-Kille provided an overview of his paper entitled
-
- "PP Use of Directory"
-
- This paper defines a comprehensive approach for using X.500 Directory Services
- to support X.400 routing, RFC1148 address mapping, distribution list expansion,
- and various other purposes suited to electronic mail. The paper establishes
- the basis for further work by the MHS-DS Working Group.
-
- The working group decided that the following seven draft RFC's will be
- derived from "PP Use of Directory":
-
- 1. An RFC which describes how to represent tables in the directory
- and which also defines the concept of X.400 routing trees.
-
- 2. An RFC which defines the mechanism for mapping X.400 O/R addresses
- onto X.500 distinguished names. This RFC will define the basic
- mapping rules, and it will also describe how knowledge information
- and cross references can be used to avoid unnecessary chaining and
- referrals through DSA's managed by ADMD service providers.
-
- 3. An RFC which defines the mechanism for using X.500 Directory Services
- to support X.400 routing. This RFC will draw heavily from the
- concepts defined in the first two RFC's.
-
- 4. An RFC which defines the mechanism for using X.500 Directory Services
- to support mapping between RFC822 addresses and X.400 addresses, in
- compliance with RFC1148bis. This RFC will also draw heavily from the
- concepts defined in the first two RFC's.
-
- 5. An RFC which defines mechanisms for using X.500 Directory Services
- to support practical implementations of distribution list expansion
- and management.
-
- 6. An RFC which defines mechanisms for using X.500 Directory Services to
- support RFC822 mail routing and distribution.
-
- 7. An RFC which defines a simple profile of the other RFC's, especially
- RFC's 1 through 4. This RFC could be used as a guide to producing
- minimal implementations of the first six RFC's above.
-
- We agreed that these RFC's should be released initially as Experimental
- Drafts. As working implementations become available and practical experience
- establishes proof of concept, the RFC's will be evolved into Internet
- Standards. The Working Group openly expressed optimism that working
- implementations would be available by the end of this year. In fact, a
- PP-based prototype is already underway.
-
- The first four RFC's have top priority. They will be created and distributed
- before the last three. Our goal is to bless the final drafts of the first
- four documents at the next general IETF meeting in Boston this summer.
-
- It was generally agreed that well performing implementations of these
- RFC's will need to implement mechanisms for caching information obtained
- from the directory. This will be necessary in order to minimize the
- number of directory operations requested during normal operations, thereby
- optimizing response time in critical functions such as route discovery.
- A recommendation was made that at least one of the RFC's should provide
- guidelines for the implementation of caching. In particular, guidelines
- should be provided for recommended time-to-live values of cache entries.
-
- Harald reminded/informed the working group of related work occurring within
- ISO. Specifically, R.H. Willmott has written a paper concerned with
- using X.500 Directory Services in support of X.400. This paper is being
- circulated within the ISO standardization community. Harald brought a copy
- of the paper to San Diego and provided copies to the MHS-DS membership.
- We agreed to review this paper and evaluate its relevance to our work plan.
-
- Before the meeting was closed, Steve Hardcastle-Kille summarized some new
- features which will be added to the RFC's in response to comments he has
- received recently. These features include:
-
- 1. Improvement in the mechanism for defining and managing MTA
- passwords in the directory. Specifically, a mechanism will be
- defined for using the normal X.500 compare operation to compare
- MTA passwords. It is likely that this will enhance the security
- of MTA passwords stored in the directory.
-
- 2. Added support for explicitly defining a UA which always causes
- nondelivery reports to be generated. It is not clear how useful
- this feature truly is, but it does provide a mechanism for catching
- undeliverable X.400 addresses as early as possible.
-
- 3. Added a hook for discovering MTA's which are common to a community
- of recipients. This feature allows mutually remote MTA's to optimize
- their usage of network resources by detecting that a large group
- of recipients can be reached by relaying mail through a common
- MTA which will perform a distribution function. For example, an
- MTA in the US can use this feature to send a single copy of a
- message to a WEP in France, and the French WEP will distribute
- the message to a group of MTA's within France. This optimizes
- utilization of the network link between the US and France.
-
- Action items:
-
- 1. Kevin Jordan will update the MHS-DS charter such that it specifies
- the RFC's we intend to produce and the time-frame in which we intend
- to produce them.
-
- 2. Steve Hardcastle-Kille will generate the first four draft RFC's
- from his "PP Use of Directory" paper and make them available to the
- working group for review and comment. He will accomplish this prior
- to the upcoming JENC-3 conference in May.
-
- 3. Erik Huizer will provide Steve with an OID to be used for
- identifying the new draft RFC's.
-
- Future meetings:
-
- The next meeting of the MHS-DS Working Group will take place at the
- upcoming JENC-3 (3rd annual Joint European Networking Conference) in
- Innsbruck, Austria. The meeting will probably take place on Friday,
- May 15.
-
- The third meeting of the MHS-DS Working Group will take place at the
- next general IETF meeting in Boston, Massachusetts, in July.
-
-