RFC 138 (rfc138) - Page 1 of 23


Status report on proposed Data Reconfiguration Service



Alternative Format: Original Text Document



Network Working Group                                       Bob Anderson
Request for Comments: 138                                           Rand
NIC 6715                                                       Vint Cerf
                                                                    UCLA
                                                            Eric Harslem
                                                            John Heafner
                                                                    Rand
                                                              Jim Madden
                                                          U. of Illinois
                                                            Bob Metcalfe
                                                                     MIT
                                                           Arie Shoshani
                                                                     SDC
                                                               Jim White
                                                                    UCSB
                                                              David Wood
                                                                   Mitre
                                                           28 April 1971

         STATUS REPORT ON PROPOSED DATA RECONFIGURATION SERVICE

                                 CONTENTS
     I.  INTRODUCTION .................................    2

         Purpose of this RFC ..........................    2
         Motivation ...................................    2

    II.  OVERVIEW OF DATA RECONFIGURATION SERVICE .....    3

         Elements of Data Reconfiguration Service .....    3
         Conceptual Network Connections ...............    3
         Connection Protocols and Message Formats .....    4
         Example Connection Configurations ............    6

   III.  THE FORM MACHINE .............................    7

         Input/Output Stream and Forms ................    7
         Form Machine BNF Syntax ......................    7
         Alternate Specification of Form Machine Syntax    8
         Forms ........................................    9
         Rules ........................................   10
         Terms ........................................   10

           Term Format 1 ..............................   11
           Term Format 2 ..............................   11
           Term Format 3 ..............................   13
           Term Format 4 ..............................   13
           Application of a Term ......................   14



Anderson, et al.