RFC 327 (rfc327) - Page 1 of 5


Data and File Transfer workshop notes



Alternative Format: Original Text Document



Network Working Group                                         A. Bhushan
Request for Comments: 327                                        MIT-MAC
NIC: 9261                                                 April 27, 1972


                 DATA AND FILE TRANSFER WORKSHOP NOTES

   On April 14 and 15, 1972, a Data and File Transfer Workshop was held
   at M.I.T., Cambridge, Mass.  A list of attendees of the meeting for
   April 14 and 15 is appended to the notes.  This note attempts to
   summarize most of the topics discussed and all of the decisions
   reached at the workshop meeting.

   The following is a summary of the talks and discussions on April 14,
   1972.

   Steve Crooker discussed a general theory for Network protocols.
   Protocols transformations should have a unique inverse, and should be
   transitive.  Transformation to a standard form requires only 2n
   transformations (n = number of different types of hosts), as compared
   with n(n-1) transformations with no standard form.  A standard
   approach is preferable for n >= 3.

   For file transfer, one could define a Network Virtual File Image.
   There was some discussion on whether it was possible to satisfy the
   above rules for file structure transformations.  No agreement was
   reached and the problem was abandoned for the present.

   Further discussion lead to the following formulation of the Workshop
   goals:

   To come up with data and file transfer protocol/strategy that
   satisfies the needs of ARPANET users including Maxi-HOSTs, Mini-
   HOSTs, TIPs, Datacomputer, RJE, and Mailbox users.

      Goals for the protocols/strategy were set as:

      1.  It should preserve the integrity of data.

      2.  It should preserve the integrity of character representation
          and interpretation.

      3.  It should preserve the integrity of structural information, to
          the extent conveniently possible.

      4.  It should lead to the development of a Network Virtual File
          System.




Bhushan