RFC 1545 (rfc1545) - Page 2 of 5

FTP Operation Over Big Address Records (FOOBAR)

RFC 1545                  FTP Over Big Address             November 1993


   representation).  The fields are separated by commas.  A port command
   is thus of the general form "PORT h1,h2,h3,h4,p1,p2", where h1 is the
   high order 8 bits of the internet host address.

   To accommodate larger network addresses anticipated for all IP "next
   generation" alternatives, new commands and reply codes are needed for
   FTP.  This memo addresses these needs.

2.  The LPRT Command

   The LPRT command allows users to specify a "long" address for the
   transport connection over which data are transferred. The LPRT
   command syntax is:

      LPRT 

   The  argument is the concatenation of the following
   fields;

   o  an 8-bit  argument (af)

   o  an 8-bit  argument (hal)

   o  a  of  (h1, h2, ...)

   o  an 8-bit  (pal)

   o  a  of  (p1, p2, ...)

   The  argument takes the value of the version number
   of IP (see Assigned Numbers, STD 2, RFC 1340), or generally speaking,
   an Internet layer protocol.  Relevant assigned IPng version numbers
   are:

     Decimal         Keyword
     ------          -------
     0               reserved
     1-3             unassigned
     4               Internet Protocol (IP)
     5               ST Datagram Mode
     6               SIP
     7               TP/IX
     8               PIP
     9               TUBA
     10-14           unassigned
     15              reserved





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