RFC 2164 (rfc2164) - Page 2 of 10

Use of an X

RFC 2164         X.500/LDAP Directory to Support MIXER      January 1998


        o  It is the "natural" location, and will also help to
           ensure correct administrative authority for a mapping
           definition.

        o  The tree will usually be accessed for routing, and so it
           will be efficient for addresses which are being routed.

          This is not done, as the benefits of the approach proposed are
          greater.

   MCGAMs are global.  A MIXER gateway may use any set of MCGAMs.  A key
   use of the directory is to enable MIXER gateways to share MCGAMs and
   to share the effort of maintaining and publishing MCGAMs.  This
   specification and MIXER also recognise that there is not a single
   unique location for publication of all MCGAMs.  This specification
   allows for multiple sets of MCGAMs to be published.  Each set of
   MCGAMs is published under a single part of the directory.  There are
   four mappings, which are represented by two subtrees located under
   any part of the DIT. For the examples the location defined below is
   used:


   OU=MIXER MCGAMs, O=Zydeco Plc,  C=GB

   These subtree roots are of object class subtree, and use the
   mechanism for representing subtrees defined in [1].


   X.400 to RFC 822 This table gives the equivalence mapping from X.400
       to RFC 822.  There is an OR Address tree under this.  An example
       entry is:

       PRMD=Isode, ADMD=Mailnet, C=FI, CN=X.400 to RFC 822,
       OU=MIXER MCGAMs, O=Zydeco Plc,  C=GB

   RFC 822 to X.400 There is a domain tree under this.  This table holds
       the equivalence mapping from RFC 822 to X.400, and the gateway
       mapping defined in RFC 1327.  An example entry is:

       DomainComponent=ISODE, DomainComponent=COM,
       CN=RFC 822 to X.400,
       OU=MIXER MCGAMs, O=Zydeco Plc,  C=GB

   The values of the table mapping are defined by use of two new object
   classes, as specified in Figure 1.  The objects give pointers to the
   mapped components.





Kille                       Standards Track