NETRJT: Remote Job Service Protocol for TIPS (RFC0283)
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2019-Feb-13
Internet Society Requests For Comment (RFCs)
NETWORK WORKING GROUP R. T. BRADEN REQUEST FOR COMMENTS #283 UCLA/CCN NIC #8165 DECEMBER 20, 1971 CATEGORIES: D OBSOLETES: NONE UPDATES: RFC #189
NETRJT -- Remote Job Service Protocol for TIPS ----------------------------------------------
A. INTRODUCTION ------------
TIP’s have very limited processing capability; their function is mainly limited to interfacing printer-keyboard devices to the Network using TELNET protocol. It will also be possible to have a tape drive on a TIP, using a subset of the count form of DTP (see RFC #264). However, TIP’s cannot and will not support either DTP or FTP (see RFC #265) in general. Therefore, TIP users are excluded from using any existing remote job entry protocol (e.g. CCN’s NETRJS - see RFC #189).
It appears, however, that it may be feasible in the future to use TIP’s for remote job entry in one or more of the following three ways:
(a) Attach local card readers, line printers, and card punches directly to TIP ports. These devices would use a TELNET-like* format and frame their characters with Start/Stop bits. BBN can now supply a suitable 200 LPM printer, and is searching for suitable readers and punches.
(b) Connect a remote batch terminal to a full-duplex TIP port via a communication line. BBN is looking into this.
(c) Use the tape drive, and do card-to-tape and/or tape-to-print on another computer.
BBN hopes to make case (b) look exactly like (a) to the server host. That is, the remote batch terminal will send to and receive from the server in a TELNET-like format*; the printer, card reader, punch, and operator console connections will all use different sockets but one hardware port at the TIP, which will map multiple sockets into the one port.
NOTE: By "TELNET-like format", we mean: (a) _CR_LF_ used to delimit logical records (lines or cards), and (b) the ASCII or EBCDIC format effector control characters used for carriage control in the printer stream. It does _not_ necessarily imply ASCII character codes.
[ This RFC was put into machine readable form for entry ] [ into the online RFC archives by BBN Corp. under the ] [ direction of Alex McKenzie. 12/96 ]
This document describes NETRJT, a modification of CCN’s NETRJS protocol specifically to provide remote job entry service to TIP’s using one of the methods (a), (b), or (c). NETRJT follows the general model of NETRJS: use TELNET protocol over a primary or "operator" connection pair, and open simplex secondary connections for data transfer of job stream input and output. (We also considered the possibility of using the Divert Output mechanism of the TIP for sending remote job output over the operator connection, and an analogous mechanism for input. However, in discussion with Alex McKenzie, it was agreed that sharing the operator connections has little merit and causes lots of problems).
NETRJT differs in two principal ways from NETRJS:
1. The NETRJT server process initiates the data transfer connections, under control of commands from the...