RFC 1801 (rfc1801) - Page 1 of 73


MHS use of the X



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Network Working Group                                           S. Kille
Request for Comments: 1801                              ISODE Consortium
Category: Experimental                                         June 1995


   X.400-MHS use of the X.500 Directory to support X.400-MHS Routing

Status of this Memo

   This memo defines an Experimental Protocol for the Internet
   community.  This memo does not specify an Internet standard of any
   kind.  Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

Table of Contents

  1   Introduction                                                     3
  2   Goals                                                            3
  3   Approach                                                         5
  4   Direct vs Indirect Connection                                    6
  5   X.400 and RFC 822                                                8
  6   Objects                                                          9
  7   Communities                                                     10
  8   Routing Trees                                                   11
      8.1    Routing Tree Definition   .   .   .   .   .   .   .      12
      8.2    The Open Community Routing Tree   .   .   .   .   .      12
      8.3    Routing Tree Location     .   .   .   .   .   .   .      13
      8.4    Example Routing Trees     .   .   .   .   .   .   .      13
      8.5    Use of Routing Trees to look up Information   .   .      13
  9   Routing Tree Selection                                          14
      9.1    Routing Tree Order    .   .   .   .   .   .   .   .      14
      9.2    Example use of Routing Trees  .   .   .   .   .   .      15
          9.2.1    Fully Open Organisation     .   .   .   .   .      15
          9.2.2    Open Organisation with Fallback     .   .   .      15
          9.2.3    Minimal-routing MTA     .   .   .   .   .   .      16
          9.2.4    Organisation with Firewall  .   .   .   .   .      16
          9.2.5    Well Known Entry Points     .   .   .   .   .      16
          9.2.6    ADMD using the Open Community for Advertising      16
          9.2.7    ADMD/PRMD gateway   .   .   .   .   .   .   .      17
  10  Routing Information                                             17
      10.1   Multiple routing trees    .   .   .   .   .   .   .      20
      10.2   MTA Choice    .   .   .   .   .   .   .   .   .   .      22
      10.3   Routing Filters   .   .   .   .   .   .   .   .   .      25
      10.4   Indirect Connectivity     .   .   .   .   .   .   .      26
  11  Local Addresses (UAs)                                           27
      11.1   Searching for Local Users     .   .   .   .   .   .      30
  12  Direct Lookup                                                   30
  13  Alternate Routes                                                30



Kille                         Experimental


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