rfc2708.txt

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Network Working Group                                         R. Bergman
Request for Comments: 2708                            Dataproducts Corp.
Category: Informational                                    November 1999


            Job Submission Protocol Mapping Recommendations
                       for the Job Monitoring MIB

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This document defines the recommended mapping for many currently
   popular Job submission protocols to objects and attributes in the Job
   Monitoring MIB.

Table of Contents

   1.0  INTRODUCTION.................................................2
   2.0  LINE PRINTER DAEMON (LPR/LPD) PROTOCOL.......................4
   2.1  jmJobSubmissionID Mapped to LPR/LPD..........................4
   2.2  jmJobIndex Mapped to LPR/LPD.................................5
   2.3  Other MIB Objects Mapped to LPR/LPD..........................5
   2.4  The Attribute Group Mapped to LPD............................5
   3.0  APPLETALK PROTOCOL...........................................6
   3.1  jmJobSubmissionID Mapped to AppleTalk........................6
   3.2  Other AppleTalk Mappings.....................................6
   4.0  INTERNET PRINTING PROTOCOL (IPP).............................6
   4.1  jmJobSubmissionID Mapped to IPP..............................7
   4.2  jmJobIndex Mapped to IPP.....................................7
   4.3  Other MIB Objects Mapped to IPP..............................8
   4.4  The Attribute Group Mapped to IPP............................8
   5.0  INTELLIGENT PRINTER DATA STREAM (IPDS)......................10
   5.1  jmJobSubmissionId Mapped to IPDS............................10
   5.2  The Attribute Group Mapped to IPDS..........................11
   6.0  DOCUMENT PRINTING APPLICATION (DPA).........................11
   6.1  jmJobSubmissionID Mapped to DPA.............................11
   6.2  jmJobIndex Mapped to DPA....................................12
   6.3  Other MIB Objects Mapped to DPA.............................12
   6.4  The Attribute Group Mapped to DPA...........................13



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   7.0  NOVELL DISTRIBUTED PRINT SERVICE (NDPS).....................14
   7.1  jmJobSubmissionID Mapped to NDPS............................14
   7.2  jmJobIndex Mapped to NDPS...................................14
   7.3  Other MIB Objects Mapped to NDPS............................15
   7.4  The Attribute Group Mapped to NDPS..........................15
   8.0  PRINTER JOB LANGUAGE (PJL)..................................17
   8.1  jmJobSubmissionID Mapped to PJL.............................17
   8.2  jmJobIndex Mapped to PJL....................................18
   8.3  Other MIB Objects Mapped to PJL.............................18
   8.4  The Attribute Group Mapped to PJL...........................18
   9.0  POSTSCRIPT..................................................18
   9.1  jmJobSubmissionID Mapped to PostScript......................19
   9.2  Other MIB Objects and Attributes Mapped to PostScript.......19
   10.0  NETWARE PSERVER............................................19
   10.1  jmJobSubmissionID Mapped to PServer........................19
   10.2  jmJobIndex Mapped to PServer...............................19
   10.3  Other MIB Objects Mapped to PJL............................20
   10.4  The Attribute Group Mapped to PServer......................20
   11.0  NETWARE NPRINTER or RPRINTER...............................20
   12.0  SERVER MESSAGE BLOCK (SMB) PROTOCOL........................21
   12.1  jmJobSubmissionID Mapped to SMB............................21
   12.2  jmJobIndex Mapped to SMB...................................21
   12.3  Other MIB objects Mapped to SMB............................21
   13.0  TRANSPORT INDEPENDENT PRINTER/SYSTEM INTERFACE (TIP/SI)....22
   13.1  jmJobSubmissionID Mapped to TIP/SI.........................22
   13.2  jmJobIndex Mapped to TIP/SI................................22
   13.3  Other MIB Objects Mapped to TIP/SI.........................22
   13.4  The Attribute Group Mapped to TIP/SI.......................22
   14.0  SECURITY CONSIDERATIONS....................................23
   15.0  REFERENCES.................................................23
   16.0  AUTHORS' ADDRESSES.........................................24
   17.0  FULL COPYRIGHT STATEMENT...................................26

1.0  INTRODUCTION

   The Job Monitoring MIB [JobMIB] is intended to be implemented in a
   device or server that supports any job submission protocol.  However,
   the information available and the method of presentation varies
   significantly by job submission protocol.  A common method of mapping
   job submission information to the Job Monitoring MIB is essential for
   interoperability of Job MIB agents and monitoring applications.  This
   document defines recommended mappings for most popular job submission
   protocols to ensure this compatibility.








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   All mappings are unidirectional from the job submission protocol to
   the MIB.  It is assumed that support of the job submission protocol
   in the printer implies that the reverse information flow is presently
   defined and does not require interaction from the MIB.  This mapping
   is not defined in this document as it should be obvious.

   This document refers to system configurations that are defined in the
   Job Monitoring MIB [JobMIB].  For those readers that are familiar
   with the configuration descriptions, a short summary appears here.
   Please see the Job MIB document for further details.

   Configuration 1:  This is a simple peer-to-peer system which contains
                     only a client and a printer.  The Job MIB agent is
                     resident in the printer.

   Configuration 2:  This system contains a client, server, and a
                     printer.  The Jib MIB agent is resident in the
                     server.

   Configuration 3:  This system, as in configuration 2, contains a
                     client, server, and a printer.  In this case the
                     Job MIB agent is implemented within the printer.

   The most important object to be mapped is jmJobSubmissionID, since
   this is a method for the user or client to determine the jmJobIndex
   for a submitted job.  Therefore, jmJobSubmissionID is specified for
   all job submission protocols defined in this document.  The remaining
   objects mapped include only those items that have the equivalent
   information presented to the printer by the job submission protocol.

   While this document places a strong emphasis on jmJobSubmissionID
   mapping to obtain jmJobIndex, the preferred method is through the use
   of a bi-directional job submission protocol that returns the
   equivalent value of jmJobIndex to the client, such as IPP.  When a
   bi-directional protocol that returns jmJobIndex is in use, the
   jmJobSubmissionID object has no value to the client.  When the
   jmJobIndex cannot be returned, the use of a client defined
   jmJobSubmissionID is preferred over an agent derived value.  The
   client defined version allows for retrieval of jmJobIndex using a
   single SNMP Get operation, since jmJobSubmissionID is the index into
   the jmJobIDTable.  An agent derived value will require a search
   through multiple entries in the jmJobIDTable.

   The majority of the protocols mapped in this document are oriented
   towards network job submission.  However, the Job Monitoring MIB is
   also intended to monitor print jobs received from other than network
   ports, such as parallel and serial ports.  Some of the job submission
   protocols included that are used with non-networked ports are PJL,



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   PostScript, and TIP/SI.  In addition, the Job Monitoring MIB can be
   used with print jobs that are internally generated, such as self test
   pages.  In this latter case, no mapping is required since all job
   submission protocols are bypassed.

2.0  LINE PRINTER DAEMON (LPR/LPD) PROTOCOL

   The LPR/LPD printing protocol [LPD] is used with BSD UNIX systems in
   the client-server-printer configuration.  Usage of the Job Monitoring
   MIB with LPR/LPD will most likely conform to Configuration 3, where
   the monitor application or the server uses SNMP to obtain job
   information from the printer.  The client communicates with the UNIX
   server using the existing LPD protocol to obtain job information.

   The LPR/LPD protocol is also used in the Windows environment to
   implement peer-to-peer printing, as shown in configuration 1.  In
   this case, SNMP is used by the client and/or the monitor application
   to obtain the job information.

   One of the major problems of LPR/LPD is the large number of vendor
   unique extensions currently used with the protocol and the resulting
   compatibility issues between available implementations.  To avoid
   these issues, this mapping of LPR/LPD is restricted to the protocol
   as defined by RFC 1179.

   The LPR/LPD protocol transfers print job data and control information
   in separate files, known as the Data File and Control File,
   respectively.  Most of the information concerning the print job is
   contained in the Control File.  In many LPD implementations, the
   Control File is transferred following the Data File.  Thus much of
   the information concerning the job may not be available until the
   completion of the data transmission.

2.1  jmJobSubmissionID Mapped to LPR/LPD

   The LPR/LPD Receive Data File command contains a parameter which
   defines the name of the data file.  This name field is structured as
   follows:

      dfaXXX<host-name>  or  daXXXX<host-name>

   Where XXX or XXXX is the numeric job number assigned by the network
   entity submitting the print job to the printer.  The recommended
   mapping of this name field to jmJobSubmissionID is:







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   octet 1:   '9'

   octets 2-40:  Contains the <host-name> portion of the name field.  If
                 the <host-name> portion is less than 40 octets, the
                 left-most character in the string shall appear in octet
                 position 2.  Any unused portion of this field shall be
                 filled with spaces.  Otherwise, only the last 39 bytes
                 shall be included.

   octets 41-48:  '00000XXX' or '0000XXXX', where XXX or XXXX is the
               decimal (ASCII coded) representation of the LPR/LPD job
               number.

2.2  jmJobIndex Mapped to LPR/LPD

   The job index (jmJobIndex) is assigned by the SNMP job monitoring
   agent and is independent of the XXX (or XXXX) index assigned by the
   LPR/LPD client.  This will allow the SNMP agent to track jobs
   received from multiple sources.

2.3  Other MIB Objects Mapped to LPR/LPD

MIB Object                    | LPR/LPD Parameter
------------------------------+----------------------------------------
jmJobKOctetsPerCopyRequested  | Number of bytes as defined in the Data
                              |  File
jmJobOwner                    | Control file command code = P (User Id)

2.4  The Attribute Group Mapped to LPD

   Other attributes that are applicable, but not defined in this section
   such as attributes that map to a vendor unique extension, may also be
   included.

MIB attribute         | LPR/LPD information             | Data type
----------------------+---------------------------------+--------------
jobName               | Job Name (notes 1, 2)           | Octet String
queueNameRequested    | Queue name from the Data File   | Octet String
fileName              | Source File Name (notes 1, 3)   | Octet String

Notes:
------
   1. The information is optional in the Control File.  The attribute
      should be included if present in the Control File.
   2. Control file command code = J.  If this optional field is omitted
      from the control file, then the agent returns the file name
      (command code = N), if present.
   3. Control file command code = N.



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RFC 2708            Job Submission Protocol Mapping        November 1999


3.0  APPLETALK PROTOCOL

   AppleTalk was originally developed as a peer-to-peer network
   protocol, as described in configuration 1, for use with Apple
   Macintosh computers.  Today, print spoolers are also available for
   use with Macintosh computer networks that conform to configurations
   2/3.  In addition, printing with the AppleTalk protocol is supported
   from both Windows NT servers and Novell servers also per
   configurations 2/3.

   The AppleTalk protocol provides very little information that can be
   used with the Job Monitoring MIB.  The Macintosh print drivers are
   able to provide information concerning the user and document name but
   imbed this information in the PDL, which is typically PostScript.
   The preferred jmJobSubmissionID is constructed from the information
   in the PostScript file, as defined in section 9.0.

3.1  jmJobSubmissionID Mapped to AppleTalk

   An alternative jmJobSubmissionID may be constructed from the
   Connection Identifier contained in the AppleTalk Printer Access
   Protocol (PAP) header.  Since the Connection Id is not readily
   available in any of the defined AppleTalk implementations, this
   approach may be of little utility.

   octet 1:   'A'

   octets 2-40:  Contains the AppleTalk printer name, with the first
                 character of the name in octet 2.  AppleTalk printer
                 names are a maximum of 31 characters.  Any unused
                 portion of this field shall be filled with spaces.

   octets 41-48:  '00000XXX', where 'XXX' is the decimal (ASCII coded)
                  representation of the Connection Id.

3.2  Other AppleTalk Mappings

   No other Job MIB objects or parameters can be derived from
   information available in the AppleTalk headers

4.0  INTERNET PRINTING PROTOCOL (IPP)

   The Internet Printing Protocol [IPP] supports printing using any one
   of the three possible configurations.  For configuration 2, the
   mapping defined herein is performed on an agent within the server.
   Otherwise, the mapping is performed on an agent within the printer.





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4.1  jmJobSubmissionID Mapped to IPP

   IPP contains a rich set of parameters which allow several methods of
   creating the jmJobSubmissionID object.  To prevent interoperability
   problems, the preferred method is to use the IPP job-uri attribute as
   follows:

   octet 1:   '4'

   octets 2-40:  Contains the IPP job-uri job description attribute
                 generated by the printer.  (The job-uri is returned to
                 the client by IPP.)  If the job-uri is less than 40
                 octets, the left-most character in the string shall
                 appear in octet position 2.  Any unused portion of this
                 field shall be filled with spaces.  Otherwise, only the
                 last 39 bytes shall be included.

   octets 41-48:  Contains the decimal (ASCII coded) representation of
                  the job-id job description attribute.  Leading zeros
                  shall be inserted to fill the entire 8 octet field.

   NOTE - Since IPP returns the "job-identifier" attribute with the
   jmJobIndex value for a job when the job is submitted, the use of the