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Network Working Group                                        Pat Fleming
INTERNET-DRAFT                                               Independent
Obsoletes: 3712 (if approved)                               Ira McDonald
Intended Category: Standards Track                            High North
Expires: 3 September 2014                                   3 March 2014


             Lightweight Directory Access Protocol (LDAP):
                      Schema for Printer Services
              <draft-mcdonald-ldap-printer-schema-06.txt>


Abstract

   This document defines a schema, object classes and attributes, for
   Printers and Print Services, for use with directories that support
   Lightweight Directory Access Protocol (RFC 4510).  This document is
   based on the Printer attributes listed in Appendix E of Internet
   Printing Protocol/1.1 (RFC 2911).  Additional Printer attributes are
   based on definitions in the Printer MIB v2 (RFC 3805), IEEE-ISTO PWG
   Command Set for IEEE 1284 Device ID (PWG 5107.2), IEEE-ISTO PWG IPP
   Job and Printer Extensions - Set 3 (PWG 5100.13), and IEEE-ISTO PWG
   IPP Everywhere (PWG 5100.14).

   This document is an individual submission to the IETF by the Internet
   Printing Protocol Working Group of the IEEE-ISTO Printer Working
   Group, as part of their PWG IPP Everywhere (PWG 5100.14) project for
   secure mobile printing with vendor-neutral Client software.

   This document obsoletes RFC 3712.


Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on 3 September 2014.


Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.


































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                           Table of Contents

1.  Introduction ...............................................       5
  1.1.  Relationship to SLP Printer Service ....................       5
  1.2.  Source of LDAP Printer Attributes ......................       5
  1.3.  Source of LDAP Printer Schema OIDs .....................       6
    1.3.1.  IBM Assignments for RFC 3712 .......................       6
    1.3.2.  IEEE-ISTO PWG Assignments ..........................       6
  1.4.  Rationale for Design Choices ...........................       6
    1.4.1.  Rationale for using DirectoryString Syntax .........       6
    1.4.2.  Rationale for using caseIgnoreMatch ................       7
    1.4.3.  Rationale for using caseIgnoreSubstringsMatch ......       8
2.  Terminology and Conventions ................................       8
3.  Definition of Object Classes ...............................      10
  3.1.  slpServicePrinter ......................................      11
  3.2.  printerAbstract ........................................      11
  3.3.  printerService .........................................      12
  3.4.  printerServiceAuxClass .................................      12
  3.5.  printerIPP .............................................      13
  3.6.  printerLPR .............................................      13
4.  Definition of Attribute Types ..............................      14
  4.1.  printer-uri ............................................      16
  4.2.  printer-xri-supported ..................................      17
  4.3.  printer-name ...........................................      18
  4.4.  printer-natural-language-configured ....................      19
  4.5.  printer-location .......................................      19
  4.6.  printer-info ...........................................      20
  4.7.  printer-more-info ......................................      21
  4.8.  printer-make-and-model .................................      21
  4.9.  printer-ipp-versions-supported .........................      22
  4.10.  printer-multiple-document-jobs-supported ..............      22
  4.11.  printer-charset-configured ............................      23
  4.12.  printer-charset-supported .............................      23
  4.13.  printer-generated-natural-language-supported ..........      24
  4.14.  printer-document-format-supported .....................      24
  4.15.  printer-color-supported ...............................      25
  4.16.  printer-compression-supported .........................      25
  4.17.  printer-pages-per-minute ..............................      26
  4.18.  printer-pages-per-minute-color ........................      26
  4.19.  printer-finishings-supported ..........................      27
  4.20.  printer-number-up-supported ...........................      27
  4.21.  printer-sides-supported ...............................      28
  4.22.  printer-media-supported ...............................      29
  4.23.  printer-media-local-supported .........................      29
  4.24.  printer-resolution-supported ..........................      30
  4.25.  printer-print-quality-supported .......................      31
  4.26.  printer-job-priority-supported ........................      31
  4.27.  printer-copies-supported ..............................      32
  4.28.  printer-job-k-octets-supported ........................      32
  4.29.  printer-current-operator ..............................      33
  4.30.  printer-service-person ................................      33

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  4.31.  printer-delivery-orientation-supported ................      34
  4.32.  printer-stacking-order-supported ......................      34
  4.33.  printer-output-features-supported .....................      35
  4.34.  printer-aliases .......................................      36
  4.35.  printer-device-id .....................................      36
  4.36.  printer-device-service-count ..........................      37
  4.37.  printer-uuid ..........................................      37
  4.38.  printer-charge-info ...................................      38
  4.39.  printer-charge-info-uri ...............................      38
  4.40.  printer-geo-location ..................................      39
  4.41.  printer-ipp-features-supported ........................      40
5.  Definition of Syntaxes .....................................      41
6.  Definition of Matching Rules ...............................      41
7.  IANA Considerations ........................................      42
  7.1.  Registration of Object Classes .........................      42
  7.2.  Registration of Attribute Types ........................      43
8.  Internationalization Considerations ........................      45
9.  Security Considerations ....................................      45
10.  References ................................................      46
  10.1.  Normative References ..................................      46
  10.2.  Informative References ................................      48
11.  Acknowledgments ...........................................      49
12.  Appendix A - Changes since RFC 3712 .......................      50
13.  Appendix B - Abbreviations Used in this Document ..........      51
14.  Appendix X - Change History ...............................      52
15.  Authors' Addresses ........................................      57


























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1.  Introduction

   This document defines several object classes to provide Lightweight
   Directory Access Protocol [RFC4510] applications with flexible
   options in defining Printer information using LDAP schema.  Classes
   are provided for defining directory entries with common Printer
   information as well as for extending existing directory entries with
   SLPv2 [RFC2608], IPP/1.1 [RFC2911], and LPR [RFC1179]
   protocol-specific information.

   This document is an individual submission to the IETF by the Internet
   Printing Protocol Working Group of the IEEE-ISTO Printer Working
   Group, as part of their PWG IPP Everywhere [PWG5100.14] project for
   secure mobile printing with vendor-neutral Client software.  This
   document updates RFC 3712.

   Please send comments directly to the authors at the addresses listed
   in the section "Authors' Addresses".



   1.1.  Relationship to SLP Printer Service

   The schema defined in this document is technically aligned with the
   stable IANA-registered 'service:printer:' v2.0 template [SLPPRT20],
   for compatibility with already deployed Service Location Protocol
   (SLPv2) [RFC2608] service advertising and discovery infrastructure.
   The attribute syntaxes are technically aligned with the
   'service:printer:' v2.0 template - therefore simpler types are
   sometimes used (for example, 'DirectoryString' [RFC4517] rather than
   'labeledURI' [RFC2079] for the 'printer-uri' attribute).



   1.2.  Source of LDAP Printer Attributes

   The schema defined in this document is based on:  all of the Printer
   attributes listed in Appendix E 'Generic Directory Schema' that are
   defined in section 4.4 'Printer Description Attributes' of Internet
   Printing Protocol/1.1: Model and Semantics [RFC2911]; and selected
   Printer attributes defined in the Printer MIB v2 [RFC3805], IEEE-ISTO
   PWG Command Set for IEEE 1284 Device ID [PWG5107.2], IEEE-ISTO PWG
   IPP Job and Printer Extensions - Set 3 [PWG5100.13], and IEEE-ISTO
   PWG IPP Everywhere [PWG5100.14]

   See the table of Printer attributes and source documents in section 4
   'Definition of Attribute Types' in this document.



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   1.3.  Source of LDAP Printer Schema OIDs



   1.3.1.  IBM Assignments for RFC 3712

   In March 2000, IBM permanently assigned ASN.1 OIDs to all of the
   object classes and attributes types that were defined in the original
   LDAP Printer Schema [RFC3712].



   1.3.2.  IEEE-ISTO PWG Assignments

   In October 2011, IBM permanently delegated the base ASN.1 OID
   "1.3.18.0.2.24.46" to the IEEE-ISTO PWG for use in any PWG project.
   Subsequently, the PWG permanently assigned subordinate ASN.1 OIDs to
   all of the new attribute types defined in this updated LDAP Printer
   Schema.



   1.4.  Rationale for Design Choices



   1.4.1.  Rationale for using DirectoryString Syntax

   The attribute syntax 'DirectoryString' (UTF-8 [STD63]) defined in
   [RFC4517] is specified for several groups of string attributes that
   are defined in this document:

   1)  URI
       - printer-uri, printer-xri-supported, printer-more-info,
       printer-charge-info-uri, printer-uuid

       The UTF-8 encoding is compatible with deployment of (UTF-8 based)
       IRI Internationalized Resource Identifiers (IRIs) [RFC3987].

   2)  Description
       - printer-name, printer-location, printer-info,
       printer-make-and-model

       The UTF-8 encoding supports descriptions in any language,
       conformant with the IETF Policy on Character Sets and Languages
       [BCP18].

       Note:  The printer-natural-language-configured attribute contains
       a language tag [BCP47] for these description attributes (for

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       example, to support text-to-speech conversions).

   3)  Keyword
       - printer-compression-supported, printer-finishings-supported,
       printer-media-supported, printer-media-local-supported,
       printer-print-quality-supported

       The UTF-8 encoding is compatible with the current IPP/1.1
       [RFC2911] definition of the equivalent attributes, most of which
       have the IPP/1.1 union syntax 'keyword or name'.  The keyword
       attributes defined in this document are extensible by
       site-specific or vendor-specific 'names' which behave like new
       'keywords'

       Note:  In IPP/1.1, each value is strongly typed over-the-wire as
       either 'keyword' or 'name'.  This union selector is not preserved
       in the definitions of these equivalent LDAP attributes.



   1.4.2.  Rationale for using caseIgnoreMatch

   The EQUALITY matching rule 'caseIgnoreMatch' defined in [RFC4517] is
   specified for several groups of string attributes that are defined in
   this document:

   1)  URI

       These URI attributes specify EQUALITY matching with
       'caseIgnoreMatch' (rather than with 'caseExactMatch') in order to
       conform to the spirit of [STD66], which requires case insensitive
       matching on the host part of a URI versus case sensitive matching
       on the remainder of a URI.

       These URI attributes follow existing practice of supporting case
       insensitive equality matching for host names in the
       associatedDomain attribute defined in [RFC4524].

       Either equality matching rule choice would be a compromise:
       a) case sensitive whole URI matching can lead to false negative
       matches and has been shown to be fragile (given deployed client
       applications that 'pretty up' host names displayed and
       transferred in URI);
       b) case insensitive whole URI matching can lead to false positive
       matches, although it is a dangerous practice to publish URI that
       differ only by case (for example, in the path elements).

   2)  Description

       Case insensitive equality matching is more user-friendly for
       description attributes.

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   3)  Keyword

       Case insensitive equality matching is more user-friendly for
       keyword attributes.

   4)  IEEE 1284 Device ID

       Case insensitive equality matching is mandatory for IEEE 1284
       Device ID attributes.



   1.4.3.  Rationale for using caseIgnoreSubstringsMatch

   The SUBSTR matching rule 'caseIgnoreSubstringsMatch' defined in
   [RFC4517] is specified for several groups of string attributes that
   are defined in this document:

   1)  URI

       These URI attributes follow existing practice of supporting case
       insensitive equality matching for host names in the
       associatedDomain attribute defined in [RFC4524].

   2)  Description

       Support for case insensitive substring matching is more
       user-friendly for description attributes.

   3)  Keyword

       Support for case insensitive substring matching is more
       user-friendly for keyword attributes.

   4)  IEEE 1284 Device ID

       Support for case insensitive substring matching is mandatory for
       IEEE 1284 Device ID attributes.



2.  Terminology and Conventions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   Schema definitions are provided using LDAP [RFC4510] description
   formats.  Definitions provided here are formatted (line wrapped) for
   readability.

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3.  Definition of Object Classes

   We define the following LDAP object classes for use with both generic
   Printer related information and services specific to SLPv2 [RFC2608],
   IPP/1.1 [RFC2911], and LPR [RFC1179].

   slpServicePrinter - auxiliary class for SLP registered Printers
   printerAbstract - abstract class for all Printer classes
   printerService - structural class for Printers
   printerServiceAuxClass - auxiliary class for Printers
   printerIPP - auxiliary class for IPP Printers
   printerLPR - auxiliary class for LPR Printers

   The following are some examples of how applications could choose to
   use these classes when creating directory entries:

   1)  Use printerService for directory entries containing common
       Printer information.

   2)  Use both printerService and slpServicePrinter for directory
       entries containing common Printer information for SLP registered
       Printers.

   3)  Use printerService, printerLPR and printerIPP for directory
       entries containing common Printer information for Printers that
       support both LPR and IPP.

   4)  Use printerServiceAuxClass and object classes not defined by this
       document for directory entries containing common Printer
       information.  In this example, printerServiceAuxClass is used for
       extending other structural classes defining Printer information
       with common printer information defined in this document.

   Refer to Section 4 for definition of attribute types referenced by
   these object classes.  We use attribute names instead of OIDs in
   object class definitions for clarity.  Some attribute names described
   in [RFC2911] have been prefixed with 'printer-' as recommended in
   [RFC2926] and [SLPPRT20].












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   3.1.  slpServicePrinter

   ( 1.3.18.0.2.6.254
   NAME  'slpServicePrinter'
   DESC  'Service Location Protocol (SLP) information.'
   AUXILIARY
   SUP   slpService
   )

   This auxiliary class defines Service Location Protocol (SLPv2)
   [RFC2608] specific information.  It MAY be used to create new or
   extend existing directory entries with SLP 'service:printer' abstract
   service type information as defined in [SLPPRT20].  This object class
   is derived from 'slpService', the parent class for all SLP services,
   defined in [RFC2926].



   3.2.  printerAbstract

   ( 1.3.18.0.2.6.258
   NAME  'printerAbstract'
   DESC  'Printer related information.'
   ABSTRACT
   SUP   top
   MAY   ( printer-name $
           printer-natural-language-configured $
           printer-location $
           printer-info $
           printer-more-info $
           printer-make-and-model $
           printer-multiple-document-jobs-supported $
           printer-charset-configured $
           printer-charset-supported $
           printer-generated-natural-language-supported $
           printer-document-format-supported $
           printer-color-supported $
           printer-compression-supported $
           printer-pages-per-minute $
           printer-pages-per-minute-color $
           printer-finishings-supported $
           printer-number-up-supported $
           printer-sides-supported $
           printer-media-supported $
           printer-media-local-supported $
           printer-resolution-supported $
           printer-print-quality-supported $
           printer-job-priority-supported $
           printer-copies-supported $

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           printer-job-k-octets-supported $
           printer-current-operator $
           printer-service-person $
           printer-delivery-orientation-supported $
           printer-stacking-order-supported $
           printer-output-features-supported $
           printer-device-id $
           printer-device-service-count $
           printer-uuid $
           printer-charge-info $
           printer-charge-info-uri $
           printer-geo-location )
   )

   This abstract class defines Printer information.  It is a base class
   for deriving other Printer related classes, such as, but not limited
   to, classes defined in this document.  It defines a common set of
   printer attributes that are not specific to any one type of service,
   protocol or operating system.



   3.3.  printerService

   ( 1.3.18.0.2.6.255
   NAME  'printerService'
   DESC  'Printer information.'
   STRUCTURAL
   SUP   printerAbstract
   MAY   ( printer-uri $
           printer-xri-supported )
   )

   This structural class defines Printer information.  It is derived
   from class printerAbstract and thus inherits common Printer
   attributes.  This class can be used with or without auxiliary classes
   to define printer information.  Auxiliary classes can be used to
   extend the common printer information with protocol, service or
   operating system specific information.

   Note:  When extending other structural classes with auxiliary
   classes, printerService SHOULD NOT be used.



   3.4.  printerServiceAuxClass

   ( 1.3.18.0.2.6.257
   NAME  'printerServiceAuxClass'
   DESC  'Printer information.'
   AUXILIARY

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   SUP   printerAbstract
   MAY   ( printer-uri $
           printer-xri-supported )
   )

   This auxiliary class defines Printer information.  It is derived from
   class printerAbstract and thus inherits common Printer attributes.



   3.5.  printerIPP

   ( 1.3.18.0.2.6.256
   NAME  'printerIPP'
   DESC  'Internet Printing Protocol (IPP) information.'
   AUXILIARY
   SUP   top
   MAY   ( printer-ipp-versions-supported $
           printer-ipp-features-supported $
           printer-multiple-document-jobs-supported )
   )

   This auxiliary class defines Internet Printing Protocol (IPP/1.1)
   [RFC2911] information.  It is used to extend structural classes with
   IPP specific Printer information.

   Note:  See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport
   Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP
   Printers.



   3.6.  printerLPR

   ( 1.3.18.0.2.6.253
   NAME  'printerLPR'
   DESC  'LPR information.'
   AUXILIARY
   SUP   top
   MUST  ( printer-name )
   MAY   ( printer-aliases)
   )

   This auxiliary class defines LPR [RFC1179] information.  It is used
   to identify directory entries that support LPR.







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4.  Definition of Attribute Types

   The following attribute types are referenced by the object classes
   defined in Section 3.

   The following attribute types reference syntax OIDs defined in
   Section 3 of [RFC4517] (see Section 5 'Definition of Syntaxes'
   below).

   The following attribute types reference matching rule names (instead
   of OIDs) for clarity (see Section 6 below).  For optional attributes,
   if the Printer information is not known, the attribute value SHOULD
   NOT be set.  In the following definitions, referenced matching rules
   are defined in Section 4 of [RFC4517] and discussed in Section 6
   'Definition of Matching Rules' later in this document.

   Note:  For compatibility with existing implementations of [RFC3712]
   and underlying string length limits in [RFC2707], [RFC2911],
   [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14],
   implementations of the attributes defined in this document SHOULD NOT
   exceed those underlying string length limits (to avoid truncation and
   false matches).

   Note:  For interoperability and consistent text display, values of
   attributes defined in this document:  (a) SHOULD be normalized as
   recommended in Unicode Format for Network Interchange [RFC5198]; (b)
   SHOULD NOT contain DEL or any C0 or C1 control characters except for
   HT, CR, and LF; (c) SHOULD only contain CR and LF characters together
   (not as singletons); and SHOULD NOT contain HT, CR, or LF characters
   in names, e.g., printer-name and printer-aliases.

   Note:  Some of the following attributes are described as 'List of
   xxx' (using a comma as the member delimiter).  Some other attributes
   are described as 'One of xxx' (single-valued).  In all cases, any
   attribute can have multiple values represented as multiple instances,
   except where explictly restricted in syntax to be single-valued.

   The following table is a summary of the attribute names defined by
   this document and their corresponding source document names as
   defined in [RFC2911], [RFC3805], [PWG5107.2], or [PWG5100.13].  Some
   source attribute names have been prefixed with 'printer-' as
   recommended in [RFC2926], to address the flat namespace for LDAP
   identifiers.

   LDAP & SLP Printer Schema       Source Document and Attribute Name
   ------------------------------  -------------------------------------
   ***                             IPP/1.1 and Semantics Model [RFC2911]
   printer-uri
   printer-xri-supported

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                                   [printer-uri-supported]
                                   [uri-authentication-supported]
                                   [uri-security-supported]
   printer-name                    printer-name
   printer-natural-language-configured
                                   natural-language-configured
   printer-location                printer-location
   printer-info                    printer-info
   printer-more-info               printer-more-info
   printer-make-and-model          printer-make-and-model
   printer-ipp-versions-supported  ipp-versions-supported
   printer-multiple-document-jobs-supported
                                   multiple-document-jobs-supported
   printer-charset-configured      charset-configured
   printer-charset-supported       charset-supported
   printer-generated-natural-language-supported
                                   generated-natural-language-supported
   printer-document-format-supported
                                   document-format-supported
   printer-color-supported         color-supported
   printer-compression-supported   compression-supported
   printer-pages-per-minute        pages-per-minute
   printer-pages-per-minute-color  pages-per-minute-color
   printer-finishings-supported    finishings-supported
   printer-number-up-supported     number-up-supported
   printer-sides-supported         sides-supported
   printer-media-supported         media-supported
   printer-media-local-supported   [site names from IPP media-supported]
   printer-resolution-supported    printer-resolution-supported
   printer-print-quality-supported print-quality-supported
   printer-job-priority-supported  job-priority-supported
   printer-copies-supported        copies-supported
   printer-job-k-octets-supported  job-k-octets-supported

   ***                             Printer MIB v2 [RFC3805]
   printer-current-operator        prtGeneralCurrentOperator
   printer-service-person          prtGeneralServicePerson
   printer-delivery-orientation-supported
                                   prtOutputPageDeliveryOrientation
   printer-stacking-order-supported
                                   prtOutputStackingOrder
   printer-output-features-supported
                                   [prtOutputBursting]
                                   [prtOutputDecollating]
                                   [prtOutputPageCollated]
                                   [prtOutputOffsetStacking]
   printer-aliases                 prtGeneralPrinterName

   ***                             Cmd Set 1284 Device ID [PWG5107.2]
   printer-device-id               printer-device-id


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   ***                             IPP Job/Printer Ext Set3 [PWG5100.13]
   printer-device-service-count    device-service-count
   printer-uuid                    printer-uuid
   printer-charge-info             printer-charge-info
   printer-charge-info-uri         printer-charge-info-uri
   printer-geo-location            printer-geo-location
   printer-ipp-features-supported  ipp-features-supported



   4.1.  printer-uri

   ( 1.3.18.0.2.4.1140
   NAME 'printer-uri'
   DESC 'A URI supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   If the printer-xri-supported LDAP attribute is implemented, then this
   printer-uri value MUST be listed in printer-xri-supported.

   Values of URI SHOULD conform to [STD66], although URI schemes can be
   defined which do not conform to [STD66] (see [BCP35]).

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD not write malformed URI values into this attribute.

   Note:  See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport
   Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP
   Printers.

   Note:  For SLP registered Printers, the LDAP printer-uri attribute
   SHOULD be set to the value of the SLP-registered URL of the Printer,
   for interworking with SLPv2 [RFC2608] service discovery.

   Note:  See Sections 1.1, 1.2, and 1.3 for rationale for design
   choices.







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   4.2.  printer-xri-supported

   ( 1.3.18.0.2.4.1107
   NAME 'printer-xri-supported'
   DESC 'An XRI (extended resource identifier) supported by this
         Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   An XRI (extended resource identifier) supported by this Printer.
   Each value of this attribute MUST consist of a URI (uniform resource
   identifier) followed by (optional) authentication and security
   fields.

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Values of URI SHOULD conform to [STD66], although URI schemes can be
   defined which do not conform to [STD66] (see [BCP35]).

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD not write malformed URI values into this attribute.

   Note:  This attribute is based on 'printer-uri-supported',
   'uri-authentication-supported', and 'uri-security-supported' (called
   the 'Three Musketeers' because they are parallel ordered attributes)
   defined in IPP/1.1 [RFC2911].  This attribute unfolds those IPP/1.1
   attributes and thus avoids the ordering (and same number of values)
   constraints of the IPP/1.1 separate attributes.

   Defined keywords for fields include:

       'uri' (IPP 'printer-uri-supported')
       'auth' (IPP 'uri-authentication-supported')
       'sec' (IPP 'uri-security-supported')

   A missing 'auth' field SHOULD be interpreted to mean 'none'.  Per
   IPP/1.1 [RFC2911], IPP Job and Printer Extensions - Set 3
   [PWG5100.13], and IANA IPP Registry [IANAIPP], defined values of the
   'auth' field include:

       'none' (no authentication for this URI)
       'requesting-user-name' (from operation request)

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       'basic' (HTTP/1.1 Basic [RFC2617])
       'digest' (HTTP/1.1 Digest [RFC2617])
       'certificate' (X.509 Certificate [RFC5280])
       'negotiate' (HTTP/1.1 Negotiate [RFC4559])

   A missing 'sec' field SHOULD be interpreted to mean 'none'.  Per
   IPP/1.1 [RFC2911] and IANA IPP Registry [IANAIPP], defined values of
   the 'sec' field include:

       'none' (no security for this URI)
       'ssl3' (Netscape SSL3)
       'tls' (IETF TLS, [RFC5246])

   Each XRI field MUST be delimited by '<', with optional trailing
   whitespace.  For example:

       'uri=ipp://example.com/ipp< auth=digest< sec=tls<'
       'uri=ipps://example.com/ipp< auth=digest< sec=tls<'
       'uri=lpr://example.com/lpr< auth=none< sec=none<'
       'uri=mailto:printer@example.com< auth=none< sec=none<'

   Note:  The syntax and delimiter for this attribute are aligned with
   the equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].  Whitespace is permitted after (but not before) the
   delimiter '<'.

   Note:  See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport
   Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP
   Printers.

   Note:  See Sections 1.1, 1.2, and 1.3 for rationale for design
   choices.



   4.3.  printer-name

   ( 1.3.18.0.2.4.1135
   NAME 'printer-name'
   DESC 'The site-specific administrative name of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Values of this attribute SHOULD be specified in the language
   specified in printer-natural-language-configured (for example, to
   support text-to-speech conversions), although the Printer's name MAY
   be specified in any language.


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   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Note:  This name MAY be the last part of the Printer's URI or it MAY
   be completely unrelated.  This name MAY contain characters that are
   not allowed in a conventional URI (see [STD66]).

   Note:  For interoperability, values of this attribute:  (a) SHOULD be
   normalized as recommended in Unicode Format for Network Interchange
   [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control
   characters.



   4.4.  printer-natural-language-configured

   ( 1.3.18.0.2.4.1119
   NAME 'printer-natural-language-configured'
   DESC 'The configured natural language for LDAP attributes of
         syntax DirectoryString (UTF-8) in this directory entry.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Also, a possible natural language for IPP protocol string attributes
   set by operator, system administrator, or manufacturer.  Also, the
   (declared) natural language of the printer-name, printer-location,
   printer-info, and printer-make-and-model attributes of this Printer.

   Values of language tags MUST conform to Tags for Identifying
   Languages [BCP47].  For example:

       'en-us' (English as spoken in the US)
       'fr-fr' (French as spoken in France)

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note:  For compatibility with IPP/1.1 [RFC2911], language tags in
   this attribute SHOULD be lowercase normalized.



   4.5.  printer-location

   ( 1.3.18.0.2.4.1136
   NAME 'printer-location'
   DESC 'The physical location of this Printer.'

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   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

       'Room 123A'
       'Second floor of building XYZ'

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and (c)
   SHOULD only contain CR and LF characters together (not as
   singletons).



   4.6.  printer-info

   ( 1.3.18.0.2.4.1139
   NAME 'printer-info'
   DESC 'Descriptive information about this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

       'This Printer can be used for printing color transparencies for
        HR presentations'
       'Out of courtesy for others, please print only small (1-5 page)
        jobs at this Printer'
       'This Printer is going away on July 1, 1997, please find a new
        Printer'

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and (c)
   SHOULD only contain CR and LF characters together (not as

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   singletons).



   4.7.  printer-more-info

   ( 1.3.18.0.2.4.1134
   NAME 'printer-more-info'
   DESC 'A URI for more information about this specific Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example, this could be an HTTP URI referencing an HTML page
   accessible to a Web Browser.  The information obtained from this URI
   is intended for end user consumption.

   Values of URI SHOULD conform to [STD66], although URI schemes can be
   defined which do not conform to [STD66] (see [BCP35]).

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD not write malformed URI values into this attribute.

   Note:  See Sections 1.1, 1.2, and 1.3 for rationale for design
   choices.



   4.8.  printer-make-and-model

   ( 1.3.18.0.2.4.1138
   NAME 'printer-make-and-model'
   DESC 'Make and model of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

   Note:  The Printer manufacturer MAY initially populate this
   attribute.


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   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and (c)
   SHOULD only contain CR and LF characters together (not as
   singletons).



   4.9.  printer-ipp-versions-supported

   ( 1.3.18.0.2.4.1133
   NAME 'printer-ipp-versions-supported'
   DESC 'List of IPP versions supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of IPP versions supported by this Printer.  For
   example:

       '1.1,2.0'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   The IPP protocol version(s) MUST include major and minor versions,
   i.e., the exact version numbers for which this Printer implementation
   meets the IPP version-specific conformance requirements and
   registered in the IANA IPP Registry [IANAIPP].

   IANA-registered versions of IPP currently are:

       '1.0' (IPP/1.0 [RFC2566], OBSOLETE)
       '1.1' (IPP/1.1 [RFC2911])
       '2.0' (IPP/2.0 [PWG5100.12])
       '2.1' (IPP/2.1 [PWG5100.12])
       '2.2' (IPP/2.2 [PWG5100.12])



   4.10.  printer-multiple-document-jobs-supported

   ( 1.3.18.0.2.4.1132
   NAME 'printer-multiple-document-jobs-supported'
   DESC 'Indicates whether or not this Printer supports more than one
         document per job.'
   EQUALITY booleanMatch

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   SYNTAX  1.3.6.1.4.1.1466.115.121.1.7
   SINGLE-VALUE
   )



   4.11.  printer-charset-configured

   ( 1.3.18.0.2.4.1109
   NAME 'printer-charset-configured'
   DESC 'The configured charset for IPP protocol values of error
         and status messages generated by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Also, a possible charset for IPP protocol string attributes set by
   operator, system administrator, or manufacturer.  For example:

       'utf-8' (ISO 10646/Unicode in UTF-8 transform [STD63])
       'iso-8859-1' (Latin1)

   Values of charset tags SHOULD be defined in the IANA Registry of
   Character Sets [IANACHAR] (see also [BCP19]) and the '(preferred MIME
   name)' SHOULD be used as the charset tag in this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note:  For compatibility with IPP/1.1 [RFC2911], charset tags in this
   attribute SHOULD be lowercase normalized.



   4.12.  printer-charset-supported

   ( 1.3.18.0.2.4.1131
   NAME 'printer-charset-supported'
   DESC 'One of the charsets supported for IPP protocol values of
         IPP string attributes that correspond to attributes of
         syntax DirectoryString (UTF-8) for this directory entry.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   One of the charsets supported for IPP protocol string attributes that
   correspond to attributes of syntax DirectoryString (UTF-8) for this
   directory entry.  For example:



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       'iso-8859-1' (ISO Latin1)
       'utf-8' (UTF-8 [STD63])

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Values of charset tags SHOULD be defined in the IANA Registry of
   Character Sets [IANACHAR] (see also [BCP19]) and the '(preferred MIME
   name)' SHOULD be used as the charset tag in this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note:  For compatibility with IPP/1.1 [RFC2911], charset tags in this
   attribute SHOULD be lowercase normalized.



   4.13.  printer-generated-natural-language-supported

   ( 1.3.18.0.2.4.1137
   NAME 'printer-generated-natural-language-supported'
   DESC 'One of the natural languages supported for LDAP attributes of
         syntax DirectoryString (UTF-8) in this directory entry.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of language tags SHOULD conform to Tags for Identifying
   Languages [BCP47].  For example:

       'en-us' (English as spoken in the US)
       'fr-fr' (French as spoken in France)

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note:  For compatibility with IPP/1.1 [RFC2911], language tags in
   this attribute SHOULD be lowercase normalized.



   4.14.  printer-document-format-supported

   ( 1.3.18.0.2.4.1130
   NAME 'printer-document-format-supported'
   DESC 'One of the source document formats which can be interpreted

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         and printed by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of document formats SHOULD be MIME media types defined in the
   IANA Registry of MIME Media Types [IANAMIME] (see also [BCP13]).

   For example:

       'application/postscript' (Adobe PostScript)
       'text/plain' (plain text)

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.



   4.15.  printer-color-supported

   ( 1.3.18.0.2.4.1129
   NAME 'printer-color-supported'
   DESC 'Indicates whether this Printer is capable of any type of color
         printing at all, including highlight color.'
   EQUALITY booleanMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.7
   SINGLE-VALUE
   )



   4.16.  printer-compression-supported

   ( 1.3.18.0.2.4.1128
   NAME 'printer-compression-supported'
   DESC 'List of compression algorithms supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of compression algorithms supported by this
   Printer.  For example:

       'none'
       'deflate,gzip'


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   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   Registry [IANAIPP] include:

       'none' (no compression is used)
       'deflate' (public domain ZIP described in [RFC1951])
       'gzip' (GNU ZIP described in [RFC1952])
       'compress' (UNIX compression described in [RFC1977])



   4.17.  printer-pages-per-minute

   ( 1.3.18.0.2.4.1127
   NAME 'printer-pages-per-minute'
   DESC 'The nominal number of pages per minute which can be output by
         this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   This attribute is informative, not a service guarantee.  Typically,
   it is the value used in marketing literature to describe this
   Printer.  For example, the value for a simplex or black-and-white
   print mode.



   4.18.  printer-pages-per-minute-color

   ( 1.3.18.0.2.4.1126
   NAME 'printer-pages-per-minute-color'
   DESC 'The nominal number of color pages per minute which can be
         output by this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   This attribute is informative, not a service guarantee.  Typically,
   it is the value used in marketing literature to describe this

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   Printer.



   4.19.  printer-finishings-supported

   ( 1.3.18.0.2.4.1125
   NAME 'printer-finishings-supported'
   DESC 'List of finishing operations supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of finishing operations supported by this
   Printer.  For example:

       'staple'
       'staple,punch,bind'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   Registry [IANAIPP] include:

   'none', 'staple', 'punch', 'cover', 'bind', 'saddle-stitch',
   'edge-stitch', 'staple-top-left', 'staple-bottom-left',
   'staple-top-right', 'staple-bottom-right', 'edge-stitch-left',
   'edge-stitch-top', 'edge-stitch-right', 'edge-stitch-bottom',
   'staple-dual-left', 'staple-dual-top', 'staple-dual-right',
   'staple-dual-bottom'.

   Note:  Implementations MAY support other values.



   4.20.  printer-number-up-supported

   ( 1.3.18.0.2.4.1124
   NAME 'printer-number-up-supported'
   DESC 'Maximum number of print-stream pages that can be imposed upon a
         single side of an instance of selected medium by this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE

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   )

   Maximum number of print-stream pages that can be imposed upon a
   single side of an instance of a selected medium by this Printer.  For
   example:

       '1'
       '4'

   Note:  Values of this attribute differ from the corresponding IPP
   attribute, in that only the maximum number-up is mapped from the
   corresponding IPP attribute 'number-up-supported' defined in
   [RFC2911].



   4.21.  printer-sides-supported

   ( 1.3.18.0.2.4.1123
   NAME 'printer-sides-supported'
   DESC 'List of impression sides (one or two) and the two-sided
         impression rotations supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of impression sides (one or two) and the
   two-sided impression rotations supported by this Printer.  For
   example:

       'one-sided'
       'one-sided,two-sided-short-edge'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   Registry [IANAIPP] are:

       'one-sided'
       'two-sided-long-edge'
       'two-sided-short-edge'






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   4.22.  printer-media-supported

   ( 1.3.18.0.2.4.1122
   NAME 'printer-media-supported'
   DESC 'One of the names/sizes/types/colors of the media supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values SHOULD conform to PWG Media Standardized Names [PWG5101.1].

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values of standardized media size names defined in [PWG5101.1] and
   recorded in the IANA IPP Registry [IANAIPP] include:

       'na_letter_8.5x11in'
       'iso_a4_210x297mm'

   Values of standardized media types defined in [PWG5101.1] and
   recorded in the IANA IPP Registry [IANAIPP] include:

       'envelope'
       'stationery'

   Values of standardized media colors defined in [PWG5101.1] and
   recorded in the IANA IPP Registry [IANAIPP] include:

       'white'
       'blue'

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.



   4.23.  printer-media-local-supported

   ( 1.3.18.0.2.4.1117
   NAME 'printer-media-local-supported'
   DESC 'One of the site-specific media supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )


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   Values SHOULD conform to PWG Media Standardized Names [PWG5101.1].

   For example:

       'custom_purchasing-form_8.5x11in' (site-specific name)

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.



   4.24.  printer-resolution-supported

   ( 1.3.18.0.2.4.1121
   NAME 'printer-resolution-supported'
   DESC 'One of the resolutions supported for printing documents by this
         Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Each resolution value MUST be a string containing 3 fields:
   1)  Cross feed direction resolution (positive integer);
   2)  Feed direction resolution (positive integer);
   3)  Unit - 'dpi' (dots per inch) or 'dpcm' (dots per centimeter).

   Each resolution field MUST be delimited by '>', with optional
   trailing whitespace.  For example:

       '300> 300> dpi>'
       '600> 600> dpi>'

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note:  This attribute is based on 'printer-resolution-supported'
   defined in IPP/1.1 [RFC2911] (which has a binary complex encoding)
   derived from 'prtMarkerAddressabilityFeedDir',
   'prtMarkerAddressabilityXFeedDir', and 'prtMarkerAddressabilityUnit'
   defined in the Printer MIB v2 [RFC3805] (which have integer
   encodings).

   Note:  The syntax and delimiter for this attribute are aligned with
   the equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].  Whitespace is permitted after (but not before) the
   delimiter '>'.

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   4.25.  printer-print-quality-supported

   ( 1.3.18.0.2.4.1120
   NAME 'printer-print-quality-supported'
   DESC 'List of print qualities supported for printing documents on
         this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of print qualities supported for printing
   documents on this Printer.  For example:

       'unknown'
       'draft,normal,high'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   Registry [IANAIPP] include:

       'draft'
       'normal'
       'high'

   Note:  The value 'unknown' MUST only be reported if the corresponding
   IPP attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.



   4.26.  printer-job-priority-supported

   ( 1.3.18.0.2.4.1110
   NAME 'printer-job-priority-supported'
   DESC 'Indicates the number of job priority levels supported by this
         Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   An IPP/1.1 [RFC2911] conformant Printer, which supports job priority,
   always supports a full range of priorities from '1' to '100' (to
   ensure consistent behavior), therefore this attribute describes the

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   'granularity' of priority supported.  Values of this attribute are
   from '1' to '100'.



   4.27.  printer-copies-supported

   ( 1.3.18.0.2.4.1118
   NAME 'printer-copies-supported'
   DESC 'The maximum number of copies of a document that can be printed
         as a single job on this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the maximum supported copies.  A value of
   '0' indicates no maximum limit.  A value of '-1' indicates 'unknown'.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].



   4.28.  printer-job-k-octets-supported

   ( 1.3.18.0.2.4.1111
   NAME 'printer-job-k-octets-supported'
   DESC 'The maximum size in kilobytes (1,024 octets actually) incoming
         print job that this Printer will accept.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the maximum supported job size.  A value
   of '0' indicates no maximum limit.  A value of '-1' indicates
   'unknown'.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].







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   4.29.  printer-current-operator

   ( 1.3.18.0.2.4.1112
   NAME 'printer-current-operator'
   DESC 'The identity of the current human operator responsible for
         operating this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   The value of this attribute SHOULD include information that would
   enable other humans to reach the operator, such as a telephone
   number.

   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and (c)
   SHOULD only contain CR and LF characters together (not as
   singletons).



   4.30.  printer-service-person

   ( 1.3.18.0.2.4.1113
   NAME 'printer-service-person'
   DESC 'The identity of the current human service person responsible
         for servicing this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   The value of this attribute SHOULD include information that would
   enable other humans to reach the service person, such as a telephone
   number.

   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and (c)
   SHOULD only contain CR and LF characters together (not as
   singletons).



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   4.31.  printer-delivery-orientation-supported

   ( 1.3.18.0.2.4.1114
   NAME 'printer-delivery-orientation-supported'
   DESC 'List of delivery orientations of pages as they are printed
         and ejected supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of delivery orientations of pages as they are
   printed and ejected supported by this Printer.  For example:

       'unknown'
       'face-up,face-down'

   Values defined in Printer MIB v2 [RFC3805] for
   prtOutputPageDeliveryOrientation are:

       'face-up'
       'face-down'

   Note:  The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].



   4.32.  printer-stacking-order-supported

   ( 1.3.18.0.2.4.1115
   NAME 'printer-stacking-order-supported'
   DESC 'List of stacking orders of pages as they are printed and
         ejected supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of stacking orders of pages as they are printed
   and ejected supported by this Printer.  For example:

       'unknown'
       'first-to-last'
       'first-to-last,last-to-first'


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   Values defined in Printer MIB v2 [RFC3805] for prtOutputStackingOrder
   are:

       'first-to-last'
       'last-to-first'

   Note:  The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].



   4.33.  printer-output-features-supported

   ( 1.3.18.0.2.4.1116
   NAME 'printer-output-features-supported'
   DESC 'List of output features supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of output features supported by this Printer.
   For example:

       'unknown'
       'bursting,decollating'
       'offset-stacking'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values defined in Printer MIB v2 [RFC3805] for prtOutputBursting,
   prtOutputDecollating, prtOutputPageCollated, and
   prtOutputOffsetStacking are:

       'bursting'
       'decollating'
       'page-collating'
       'offset-stacking'

   Note:  The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attributes are not present, i.e., the value 'unknown' is
   an artifact of this LDAP mapping.

   Note:  The syntax and values for this attribute are aligned with the

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   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

   Note:  Implementations MAY support other values.



   4.34.  printer-aliases

   ( 1.3.18.0.2.4.1108
   NAME 'printer-aliases'
   DESC 'One of the site-specific administrative names of this Printer
         in addition to the value specified for printer-name.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of this attribute SHOULD be specified in the language
   specified in printer-natural-language-configured (for example, to
   support text-to-speech conversions), although the Printer's alias MAY
   be specified in any language.

   Note:  Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note:  For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Note:  For interoperability, values of this attribute:  (a) SHOULD be
   normalized as recommended in Unicode Format for Network Interchange
   [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control
   characters.



   4.35.  printer-device-id

   ( 1.3.18.0.2.24.46.1.101
   NAME 'printer-device-id'
   DESC 'The IEEE 1284 Device ID for this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Values of this attribute SHOULD conform to IEEE-ISTO PWG Command Set
   Format for IEEE 1284 Device ID [PWG5107.2].

   Note:  For compatibility with [PWG5100.14] and [PWG5107.2], values of

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   this attribute SHOULD NOT exceed 1023 octets in length.



   4.36.  printer-device-service-count

   ( 1.3.18.0.2.24.46.1.102
   NAME 'printer-device-service-count'
   DESC 'The number of Printer (Print Service) instances configured on
         this Imaging Device (host system).'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the number of Printer (Print Service)
   instances configured on this Imaging Device (host system).  A value
   of '-1' indicates 'unknown'.  A value of '0' is not meaningful
   (because this attribute must be reported by some Printer instance).

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'device-service-count' attribute defined in [PWG5100.13].



   4.37.  printer-uuid

   ( 1.3.18.0.2.24.46.1.104
   NAME 'printer-uuid'
   DESC 'A URN specifying UUID of this Printer (Print Service) instance
         on this Imaging Device (host system).'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   The UUID of this Printer (Print Service) instance on this Imaging
   Device (host system).  For example:

       'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6'

   Values of this attribute MUST conform to the UUID URN namespace
   [RFC4122].

   Note:  For compatibility with [PWG5100.13] and [RFC4122], values of
   this attribute SHOULD NOT exceed 45 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URN values read from this attribute.  LDAP administrative clients

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   SHOULD not write malformed URN values into this attribute.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'printer-uuid' attribute defined in [PWG5100.13].



   4.38.  printer-charge-info

   ( 1.3.18.0.2.24.46.1.105
   NAME 'printer-charge-info'
   DESC 'Descriptive information about paid printing services for this
         Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

       'This Printer can be used for paid printing at 2 cents/page.'

   Note:  For compatibility with [PWG5100.13], values of this attribute
   SHOULD NOT exceed 1023 octets in length.

   Note:  For interoperability and consistent text display, values of
   this attribute:  (a) SHOULD be normalized as recommended in Unicode
   Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain any
   C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD
   only contain CR and LF characters together (not as singletons).

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'printer-charge-info' attribute defined in [PWG5100.13].



   4.39.  printer-charge-info-uri

   ( 1.3.18.0.2.24.46.1.106
   NAME 'printer-charge-info-uri'
   DESC 'A URI for a human-readable Web page for paid printing services
         for this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:


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       'http://example.com/charges'

   Values of URI SHOULD conform to [STD66], although URI schemes can be
   defined which do not conform to [STD66] (see [BCP35]).

   Note:  For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13],
   values of this attribute SHOULD NOT exceed 1023 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD not write malformed URI values into this attribute.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'printer-charge-info-uri' attribute defined in
   [PWG5100.13].



   4.40.  printer-geo-location

   ( 1.3.18.0.2.24.46.1.107
   NAME 'printer-geo-location'
   DESC 'A geo: URI specifying the geographic location of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

       'geo:13.4125,103.8667'

   Values of this attribute MUST conform to the 'geo' URI scheme
   [RFC5870].

   Note:  For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13],
   values of this attribute SHOULD NOT exceed 1023 octets in length.

   Note:  LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD not write malformed URI values into this attribute.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'printer-geo-location' attribute defined in [PWG5100.13].






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   4.41.  printer-ipp-features-supported

   ( 1.3.18.0.2.24.46.1.108
   NAME 'printer-ipp-features-supported'
   DESC 'List of IPP protocol features that this Printer supports.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Comma-delimited list of IPP protocol features that this Printer
   supports.  For example:

       'none'
       'unknown'
       'proof-print'
       'ipp-everywhere,proof-print,job-save'

   Note:  Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values of this attribute SHOULD specify only IANA-registered keywords
   for the 'ipp-features-supported' attribute defined in [PWG5100.13] or
   other standards track IETF or IEEE-ISTO PWG specifications if this
   Printer implementation meets all of the IPP feature-specific
   conformance requirements.

   IANA-registered values include:

       'none' (No extension features are supported)
       'document-object' (Document object defined in [PWG5100.5])
       'job-save' (Job save defined in [PWG5100.11])
       'ipp-everywhere' (IPP Everywhere defined in [PWG5100.14])
       'page-overrides' (Page overrides defined in [PWG5100.6])
       'proof-print' (Proof print defined in [PWG5100.11])
       'subscription-object' (Subscription object defined in [RFC3995])

   Note:  The value 'unknown' MUST only be reported if the corresponding
   IPP Printer attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

   Note:  The syntax and values for this attribute are aligned with the
   equivalent 'printer-ipp-features-supported' attribute defined in
   [PWG5100.13].





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5.  Definition of Syntaxes

   No new attribute syntaxes are defined by this document.

   The attribute types defined in Section 4 of this document reference
   syntax OIDs defined in Section 3 of [RFC4517], which are summarized
   below:

   Syntax OID                      Syntax Description
   ------------------------------  ------------------
   1.3.6.1.4.1.1466.115.121.1.7    Boolean
   1.3.6.1.4.1.1466.115.121.1.15   DirectoryString (UTF-8 [STD63])
   1.3.6.1.4.1.1466.115.121.1.27   Integer



6.  Definition of Matching Rules

   No new matching rules are defined by this document.

   The attribute types defined in Section 4 of this document reference
   matching rules defined in Section 4 of [RFC4517], which are
   summarized below:

   Matching Rule OID               Matching Rule Name          Usage
   ------------------------------  ------------------          -----
   2.5.13.13                       booleanMatch                EQUALITY
   2.5.13.2                        caseIgnoreMatch             EQUALITY
   2.5.13.14                       integerMatch                EQUALITY
   2.5.13.15                       integerOrderingMatch        ORDERING
   2.5.13.4                        caseIgnoreSubstringsMatch   SUBSTR



















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7.  IANA Considerations

   This document does not define any new syntaxes or matching rules.

   This document does define the following Object Identifier
   Descriptors, for registration by IANA when this RFC is published:



   7.1.  Registration of Object Classes

   Subject:  Request for LDAP Descriptor Registration

   Descriptor (short name):  see table below

   Object Identifier:  see table below

   Person & email address to contact for further information:  see below

   Usage:  object class

   Specification:  RFCnnnn [ [RFC Editor: to be assigned] ]

   Author/Change Controller:

       Ira McDonald
       High North Inc
       221 Ridge Ave
       Grand Marais, MI 49839
       USA
       Phone: +1 906-494-2434
       Email: blueroofmusic@gmail.com

   Comments:

   Object Class                                  OID
   ------------------------------------          -----------------------
   slpServicePrinter                             1.3.18.0.2.6.254
   printerAbstract                               1.3.18.0.2.6.258
   printerService                                1.3.18.0.2.6.255
   printerServiceAuxClass                        1.3.18.0.2.6.257
   printerIPP                                    1.3.18.0.2.6.256
   printerLPR                                    1.3.18.0.2.6.253







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   7.2.  Registration of Attribute Types

   Subject:  Request for LDAP Descriptor Registration

   Descriptor (short name):  see table below

   Object Identifier:  see table below

   Person & email address to contact for further information:  see below

   Usage:  attribute type

   Specification:  RFCnnnn [ [RFC Editor: to be assigned] ]

   Author/Change Controller:

       Ira McDonald
       High North Inc
       221 Ridge Ave
       Grand Marais, MI 49839
       USA
       Phone: +1 906-494-2434
       Email: blueroofmusic@gmail.com

   Comments:

   Attribute Type                                OID
   ------------------------------------          -----------------------
   printer-uri                                   1.3.18.0.2.4.1140
   printer-xri-supported                         1.3.18.0.2.4.1107
   printer-name                                  1.3.18.0.2.4.1135
   printer-natural-language-configured           1.3.18.0.2.4.1119
   printer-location                              1.3.18.0.2.4.1136
   printer-info                                  1.3.18.0.2.4.1139
   printer-more-info                             1.3.18.0.2.4.1134
   printer-make-and-model                        1.3.18.0.2.4.1138
   printer-ipp-versions-supported                1.3.18.0.2.4.1133
   printer-multiple-document-jobs-supported      1.3.18.0.2.4.1132
   printer-charset-configured                    1.3.18.0.2.4.1109
   printer-charset-supported                     1.3.18.0.2.4.1131
   printer-generated-natural-language-supported  1.3.18.0.2.4.1137
   printer-document-format-supported             1.3.18.0.2.4.1130
   printer-color-supported                       1.3.18.0.2.4.1129
   printer-compression-supported                 1.3.18.0.2.4.1128
   printer-pages-per-minute                      1.3.18.0.2.4.1127
   printer-pages-per-minute-color                1.3.18.0.2.4.1126
   printer-finishings-supported                  1.3.18.0.2.4.1125
   printer-number-up-supported                   1.3.18.0.2.4.1124
   printer-sides-supported                       1.3.18.0.2.4.1123

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   printer-media-supported                       1.3.18.0.2.4.1122
   printer-media-local-supported                 1.3.18.0.2.4.1117
   printer-resolution-supported                  1.3.18.0.2.4.1121
   printer-print-quality-supported               1.3.18.0.2.4.1120
   printer-job-priority-supported                1.3.18.0.2.4.1110
   printer-copies-supported                      1.3.18.0.2.4.1118
   printer-job-k-octets-supported                1.3.18.0.2.4.1111
   printer-current-operator                      1.3.18.0.2.4.1112
   printer-service-person                        1.3.18.0.2.4.1113
   printer-delivery-orientation-supported        1.3.18.0.2.4.1114
   printer-stacking-order-supported              1.3.18.0.2.4.1115
   printer-output-features-supported             1.3.18.0.2.4.1116
   printer-aliases                               1.3.18.0.2.4.1108
   ------------------------------------          -----------------------
   printer-device-id                             1.3.18.0.2.24.46.1.101
   printer-device-service-count                  1.3.18.0.2.24.46.1.102
   printer-uuid                                  1.3.18.0.2.24.46.1.104
   printer-charge-info                           1.3.18.0.2.24.46.1.105
   printer-charge-info-uri                       1.3.18.0.2.24.46.1.106
   printer-geo-location                          1.3.18.0.2.24.46.1.107
   printer-ipp-features-supported                1.3.18.0.2.24.46.1.108































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8.  Internationalization Considerations

   All text string attributes defined in this document of syntax
   'DirectoryString' [RFC4517] have values that are encoded in UTF-8
   [STD63], as required by [RFC4517].

   A language tag [BCP47] for all of the text string attributes defined
   in this document is contained in the
   printer-natural-language-configured attribute.

   Therefore, all object classes defined in this document conform to the
   IETF Policy on Character Sets and Languages [BCP18].

   Note:  For interoperability and consistent text display, values of
   attributes defined in this document:  (a) SHOULD be normalized as
   recommended in Unicode Format for Network Interchange [RFC5198]; (b)
   SHOULD NOT contain DEL or any C0 or C1 control characters except for
   HT, CR, and LF; (c) SHOULD only contain CR and LF characters together
   (not as singletons); and SHOULD NOT contain HT, CR, or LF characters
   in names, e.g., printer-name and printer-aliases.



9.  Security Considerations

   See [RFC4513] for detailed guidance on authentication methods for
   LDAP and the use of TLS/1.2 [RFC5246] to supply connection
   confidentiality and data integrity for LDAP sessions.

   As with any LDAP schema, it is important to protect specific entries
   and attributes with the appropriate access control.  It is
   particularly important that only administrators can modify entries
   defined in this LDAP Printer schema.  Otherwise, an LDAP client might
   be fooled into diverting print service requests from the original
   Printer (or spooler) to a malicious intruder's host system, thus
   exposing the information in printed documents.

   Note:  Security vulnerabilities can arise if DEL or any C0 or C1
   control characters are included in names, e.g., printer-name or
   printer-aliases.

   For additional security considerations of deploying Printers in an
   IPP environment, see Section 8 of [RFC2911].







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10.  References



10.1.  Normative References


   [BCP47] A. Phillips, Ed., M. Davis, Ed.  Tags for Identifying
   Languages, BCP 47, RFC 5646, September 2009.

   [IANACHAR] Internet Assigned Numbers Authority (IANA) Registry
   "Character Sets"
   <http://www.iana.org/assignments/character-sets>

   [IANAIPP] Internet Assigned Numbers Authority (IANA) Registry
   "Internet Printing Protocol"
   <http://www.iana.org/assignments/ipp-registrations>

   [IANAMIME] Internet Assigned Numbers Authority (IANA) Registry "MIME
   Media Types"
   <http://www.iana.org/assignments/media-types/index.html>

   [IPPSURI] McDonald, I., and M. Sweet.  IPP over HTTPS Transport
   Binding and 'ipps' URI Scheme, draft-mcdonald-ipps-uri-scheme-xx.txt,
   work-in-progress.

   [PWG5100.5] Carney, D., Hastings, T., and P. Zehler.  Internet
   Printing Protocol (IPP): Document Object, PWG 5100.5, October 2003.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-ippdocobject10-20031031-5100.5.pdf>

   [PWG5100.6] Zehler, P., Herriot, R., and K. Ocke.  Internet Printing
   Protocol (IPP): Page Overrides, October 2003.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-ipppageoverride10-20031031-5100.6.pdf>

   [PWG5100.12] Bergman, R., McDonald, I., and M. Sweet.  Internet
   Printing Protocol Version 2.0 Second Edition (IPP/2.0 SE), PWG
   5100.12, February 2011.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-ipp20-20110214-5100.12.pdf>

   [PWG5100.13] Sweet, M., and I. McDonald.  IEEE-ISTO PWG IPP Job and
   Printer Extensions - Set 3, PWG 5100.13, July 2012.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-ippjobprinterext3v10-20120727-5100.13.pdf>

   [PWG5100.14] Sweet, M., and I. McDonald.  IEEE-ISTO PWG IPP
   Everywhere, January 2013.

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   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-ippeve10-20130128-5100.14.pdf>

   [PWG5101.1] Bergman, R., and T. Hastings.  IEEE-ISTO PWG Media
   Standardized Names, PWG 5101.1, February 2002.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-pwgmsn10-20020226-5101.1.pdf>

   [PWG5107.2] I. McDonald.  IEEE-ISTO PWG Command Set for IEEE 1284
   Device ID, PWG 5107.2, May 2010.
   <ftp://ftp.pwg.org/pub/pwg/candidates/
   cs-pmp1284cmdset10-20100531-5107.2.pdf>

   [RFC2119] S. Bradner.  Key words for use in RFCs to Indicate
   Requirement Levels, RFC 2119 / BCP 14, March 1997.

   [RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S.,
   Leach, P., Luotonen, A., and L. Stewart.  HTTP Authentication: Basic
   and Digest Access Authentication, RFC 2617, June 1999.

   [RFC2911] T. Hastings, Ed., Herriot, R., Isaacson, S., and P. Powell.
   Internet Printing Protocol/1.1: Model and Semantics, RFC 2911,
   September 2000.

   [RFC2926] Kempf, J., Moats, R., and P. St. Pierre.  Conversion of
   LDAP Schemas to and from SLP Templates, RFC 2926, September 2000.

   [RFC3510] Herriot, R., and I. McDonald.  Internet Printing Protocol
   1.1:  IPP URL Scheme, RFC 3510, April 2003.

   [RFC3987] Duerst, M., and M. Suignard.  Internationalized Resource
   Identifiers (IRI), RFC 3987, January 2005.

   [RFC3995] Herriot, R., and T. Hastings.  Internet Printing Protocol
   (IPP): Event Notifications and Subscriptions, RFC 3995, March 2005.

   [RFC4122] Leach, P., Mealling, M., and R. Salz.  A Universally Unique
   IDentifier (UUID) URN Namespace, RFC 4122, July 2005.

   [RFC4510] K. Zeilenga, Ed.  Lightweight Directory Access Protocol
   (LDAP): Technical Specification Road Map, RFC 4510, June 2006.

   [RFC4513] R. Harrison, Ed.  Lightweight Directory Access Protocol
   (LDAP): Authentication Methods and Security Mechanisms, RFC 4513,
   June 2006.

   [RFC4517] S. Legg, Ed.  Lightweight Directory Access Protocol (LDAP):
   Syntaxes and Matching Rules, RFC 4517, June 2006.

   [RFC4519] A. Sciberras, Ed.  Lightweight Directory Access Protocol
   (LDAP): Schema for User Applications, RFC 4519, June 2006.

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   [RFC4524] K. Zeilenga, Ed.  COSINE LDAP/X.500 Schema, RFC 4524, June
   2006.

   [RFC5198] Klensin, J., and M. Padlipsky.  Unicode Format for Network
   Interchange, RFC 5198, March 2008.

   [RFC5246] Dierks, T., and E. Rescorla.  The Transport Layer Security
   (TLS) Protocol Version 1.2, RFC 5246, August 2008.

   [RFC5280] Cooper, D., Santesson, S., Farrell, S., Boeyen, S.,
   Housley, R., and W. Polk.  Internet X.509 Public Key Infrastructure
   Certificate and Certificate Revocation List (CRL) Profile, RFC 5280,
   May 2008.

   [RFC5870] Mayrhofer, A., and C. Spanring.  A Uniform Resource
   Identifier for Geographic Locations ('geo' URI), RFC 5870, June 2010.

   [STD63] F. Yergeau.  UTF-8, a Transformation Format of ISO 10646, STD
   63, RFC 3629, November 2003.

   [STD66] Berners-Lee, T., Fielding, R., and L. Masinter.  Uniform
   Resource Identifier (URI): Generic Syntax, STD 66, RFC 3986, January
   2005.



10.2.  Informative References


   [BCP13] Freed, N., Klensin, J., and T. Hansen.  Media Type
   Specifications and Registration Procedures, BCP 13, RFC 6838, January
   2013.

   [BCP18] H. Alvestrand.  IETF Policy on Character Sets and Languages,
   BCP 18, RFC 2277, January 1998.

   [BCP19] Freed, N., and J. Postel.  IANA Charset Registration
   Procedures, BCP 19, RFC 2978, October 2000.

   [BCP35] Hansen, T., Hardie, T., and L. Masinter.  Guidelines and
   Registration Procedures for New URI Schemes, BCP 35, RFC 4395,
   February 2006.

   [IANASLP] Internet Assigned Numbers Authority (IANA) Registry
   "Service Location Protocol, Version 2 (SLPv2) Templates"
   <http://www.iana.org/assignments/svrloc-templates.html>

   [PWG] IEEE-ISTO Printer Working Group (PWG)
   <http://www.pwg.org>


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   [PWGIPP] IEEE-ISTO PWG Internet Printing Protocol Working Group
   <http://www.pwg.org/ipp>

   [RFC1179] L. McLaughlin.  Line Printer Daemon Protocol, RFC 1179,
   August 1990.

   [RFC1951] P. Deutsch.  DEFLATE Compressed Data Format Specification
   Version 1.3, RFC 1951, May 1996.

   [RFC1952] P. Deutsch.  GZIP File Format Specification Version 4.3,
   RFC 1952, May 1996.

   [RFC1977] V. Schryver.  PPP BSD Compression Protocol, RFC 1977,
   August 1996.

   [RFC2079] M. Smith.  Definition of an X.500 Attribute Type and an
   Object Class to Hold Uniform Resource Identifiers (URIs), RFC 2079,
   January 1997.

   [RFC2566] deBry, R., Hastings, T., Herriot, R., Isaacson, S., and
   P. Powell.  Internet Printing Protocol/1.0:  Model and Semantics, RFC
   2566, April 1999.

   [RFC2608] Guttman, E., Perkins, C., Veizades, J., and M. Day.
   Service Location Protocol v2, RFC 2608, June 1999.

   [RFC2609] Guttman, E., Perkins, C., and J. Kempf.  Service Templates
   and Service: Schemes, RFC 2609, June 1999.

   [RFC3712] Fleming, P., and I. McDonald.  Lightweight Directory Access
   Protocol (LDAP):  Schema for Printer Services, RFC 3712, February
   2004.

   [RFC4559] Jaganathan, K., Zhu, L., and J. Brezak.  SPNEGO-based
   Kerberos and NTLM HTTP Authentication in Microsoft Windows, RFC 4559,
   June 2006.

   [SLPPRT20] St. Pierre, P., Isaacson, S., and I. McDonald.  Definition
   of of the PrinterAbstract Service Type v2.0, May 2000.
   Reviewed and approved by IETF SLP Designated Expert, according to
   Section 5 'IANA Considerations' in [RFC2609].
   Archived in [IANASLP] as "printer.2.0.en".



11.  Acknowledgments

   The editors wish to acknowledge significant contributions from Ken
   Jones and Harry Lewis and excellent comments from Patrik Faltstrom,
   Ryan Moats, Robert Moore, Lee Rafalow, Kimberly Reger, and Kurt

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   Zeilenga during the development of the original LDAP Printer schema
   [RFC3712].

   The editors wish to acknowledge excellent comments from Alexey
   Melnikov, Tom Petch, and Mike Sweet during the development of the
   current LDAP Printer schema.

   Thanks to the members of the IEEE-ISTO PWG IPP Working Group, for
   their review comments and help in preparing this document.



12.  Appendix A - Changes since RFC 3712

   1)  Added many editorial corrections and clarifications
       - corrected typos, missing words, and ambiguous sentences;
       - replaced lowercase 'printer' with titlecase 'Printer' for
       readability and consistency with IETF and IEEE-ISTO PWG IPP
       standards usage;
       - added implementation notes;
       - updated and added references.

   2)  Deleted length restrictions from formal definitions of
       DirectoryString syntax attributes
       - replaced with notes recommending length restrictions for
       compatibility with existing implementations of [RFC3712] and
       underlying string length limits in [RFC2707], [RFC2911],
       [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14].

   3)  Added new Printer attributes defined in [PWG5107.2],
       [PWG5100.13], and [PWG5100.14].
       - see the table of Printer attributes and source documents in
       section 4 'Definition of Attribute Types' in this document;
       - added support for IEEE-ISTO PWG IPP Everywhere [PWG5100.14]
       project.

   4)  Added implementation note to section 4 about string encodings
       - added discussion of 'List of xxx' and and 'One of xxx'
       - stated that any of these attributes can be represented as
       multiple instances (i.e., to avoid length overflow).

   5)  Improved comma-delimited examples of string attributes
       - added both include single-valued and multi-valued examples

   6)  Clarified use of printer-xri-supported attribute
       - added examples to show optional *trailing* whitespace after '<'
       delimiters.

   7)  Clarified section 8 'Internationalization Considerations'
       - added note about Network Unicode [RFC5198] and avoiding use of
       C0 and C1 control characters.

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   8)  Clarified section 9 'Security Considerations'
       - added note about security vulnerabilities caused by use of DEL
       or any C0 or C1 control characters in names.

   9)  Clarified terms and abbreviations
       - added 'Appendix B - Abbreviations'

   10) Changed intended document category to 'Standards Track'
       - for consistency with more recent LDAP schema specs and
       [PWG5100.14];
       - replaced 'must' with 'MUST', 'should' with 'SHOULD', and 'may'
       with 'can' or 'MAY' (as appropriate) for Standards Track
       document.




13.  Appendix B - Abbreviations Used in this Document

   This document makes use of the following abbreviations (given with
   their expanded forms and references for further reading):

   IANA   - Internet Assigned Numbers Authority
            <http://www.iana.org>

   IEEE   - Institute of Electrical and Electronics Engineers
            <http://www.ieee.org>

   IPP    - Internet Printing Protocol [RFC2911] and [PWG5100.12]
            <http://www.pwg.org/ipp/>

   ISTO   - IEEE Industry Standards and Technology Organization
            <http://www.ieee-isto.org/>

   PWG    - IEEE-ISTO Printer Working Group
            <http://www.pwg.org>

   RFC    - Request for Comments
            <http://www.rfc-editor.org/rfc.html>

   TLS    - Transport Layer Security [RFC5246]

   URI    - Uniform Resource Identifier [STD66]

   URL    - Uniform Resource Locator [STD66]

   UTF-8  - Unicode Transformation Format - 8-bit [STD63]




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14.  Appendix X - Change History

   [ [RFC Editor:  This section to be deleted before RFC publication] ]

   3 March 2014 - draft-mcdonald-ldap-printer-schema-06.txt

   Seventh draft - for IEEE-ISTO PWG IPP WG
   Global - updated publication and expiration dates in copyright,
   header, footer, and boilerplate.
   Global - replaced 'SHOULD not' w/ 'SHOULD NOT' for RFC 2911
   compliance, per Alexey Melnikov.
   Editorial - revised Abstract and section 1 Introduction to clarify
   that this document is an individual submission to the IETF by the IPP
   WG of the IEEE-ISTO PWG, per Tom Petch and IPP WG review.
   Editorial - revised Abstract and section 1 Introduction to clarify
   that this document obsoletes [RFC3712], per Alexey Melnikov.
   Editorial - added section 1.1 'Relationship to SLP Printer Service'
   and section 1.2 'Source of LDAP Printer Attributes' for clarity.
   Editorial - added section 1.3 'Sources of LDAP Printer Schema OIDs'
   to describe permanent delegation of "1.3.18.0.2.24.46" to the
   IEEE-ISTO PWG by IBM in October 2011, per Alexey Melnikov.
   Editorial - added section 1.4 'Rationale for Design Choices' for
   clarity.
   Editorial - revised sections 3.1, 3.4, 3.5, and 3.6 to delete
   erroneous SHOULD references to structural classes, per Alexey
   Melnikov.
   Editorial - revised section 4 to clarify reference to section 4 of
   [RFC4517] and forward reference to section 6 of LDAP Printer Schema,
   per Alexey Melnikov.
   Editorial - revised section 4 to add implementation note about
   compatibility with existing implementations of [RFC3712] and
   underlying string length limits in [RFC2707], [RFC2911], [RFC3805],
   [PWG5107.2], [PWG5100.13], and [PWG5100.14], per Alexey Melnikov.
   Editorial - revised section 4.4 to change SHOULD to MUST for
   conformance to [BCP47] for natural language tags, per Alexey
   Melnikov.
   Editorial - revised section 4.4 printer-natural-language-configured
   and section 4.13 printer-generated-natural-language-supported
   definitions to clarify that they refer to LDAP Printer in syntax
   DirectoryString (UTF-8), per Alexey Melnikov.
   Editorial - revised section 4.11 printer-charset-configured and
   section 4.12 printer-charset-supported definitions to clarify that
   they refer to IPP protocol values and that corresponding LDAP Printer
   attributes are always in syntax DirectoryString (UTF-8), per Alexey
   Melnikov.
   Editorial - revised section 4.20 printer-number-up-supported and
   section 4.35 printer-device-id definitions to add missing
   SINGLE-VALUE clause, per Alexey Melnikov.


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   Editorial - revised section 4.35 printer-device-id to delete
   confusing and redundant note about ordering of key/value pairs within
   LDAP attribute values (since this is clearly explained in
   [PWG5107.2]), per Alexey Melnikov.
   Editorial - revised section 4 syntaxes of printer-uri,
   printer-xri-supported, printer-name,
   printer-natural-language-configured, printer-location, printer-info,
   printer-more-info, printer-make-and-model,
   printer-ipp-versions-supported, printer-charset-configured,
   printer-charset-supported,
   printer-generated-natural-language-supported,
   printer-document-format-supported, printer-compression-supported,
   printer-finishings-supported, printer-sides-supported,
   printer-media-supported, printer-media-local-supported,
   printer-resolution-supported, printer-current-operator,
   printer-service-person, printer-delivery-orientation-supported,
   printer-stacking-order-supported, printer-output-features-supported,
   printer-aliases, printer-device-id, printer-uuid,
   printer-charge-info, printer-charge-info-uri, printer-geo-location,
   printer-ipp-features-supported, to remove length restrictions in
   syntax and add textual notes instead about IPP compatibility (where
   applicable), per Alexey Melnikov.
   Editorial - added appendix A 'Changes since RFC 3712', per Alexey
   Melnikov.
   Editorial - added missing informative reference to [RFC3712].


   19 September 2013 - draft-mcdonald-ldap-printer-schema-05.txt
   Sixth draft - for IEEE-ISTO PWG IPP WG
   Global - updated publication and expiration dates in copyright,
   header, footer, and boilerplate.
   Global - updated references, per IEEE-ISTO PWG IPP WG review.

   17 May 2013 - draft-mcdonald-ldap-printer-schema-04.txt
   Fifth draft - for IEEE-ISTO PWG IPP WG
   Global - updated publication and expiration dates in copyright,
   header, footer, and boilerplate.
   Global - added references to IPP Everywhere, per IEEE-ISTO PWG IPP WG
   review.
   Editorial - revised section 4.41 printer-ipp-features-supported to
   show 'ipp-everywhere' defined in PWG 5100.14, per IEEE-ISTO PWG IPP
   WG review.

   18 November 2012 - draft-mcdonald-ldap-printer-schema-03.txt
   Fourth draft - for IEEE-ISTO PWG IPP WG
   Global - updated publication and expiration dates in copyright,
   header, footer, and boilerplate.
   Global - updated contact info for Pat Fleming.
   Global - updated various references.
   Global - added references to IEEE-ISTO PWG and IEEE-ISTO PWG IPP WG,
   per IEEE-ISTO PWG IPP WG review.

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   Global - deleted all references to PWG IPP Everywhere and values
   defined in that specification, per IEEE-ISTO PWG IPP WG review.
   Global - deleted 'printer-device-uuid' attribute, per IEEE-ISTO PWG
   IPP WG review.
   Global - revised all 'One of' attributes to add implementation note
   that multiple values are represented as multiple instances, per
   IEEE-ISTO PWG IPP WG review.
   Global - revised all 'List of' attributes to add implementation note
   that length overflow is handled by multiple instances, per IEEE-ISTO
   PWG IPP WG review.
   Global - revised many DESC clauses to correct truncation due to
   no-fill formatting, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4 Definition of Attribute Types to add
   implementation note recommending use of Network Unicode [RFC5198],
   recommending against the use of DEL or any C0 or C1 control
   characters (except HT, CR, and LF), and recommending against HT, CR,
   and LF in names (e.g., printer-name or printer-aliases), per
   IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4 Definition of Attribute Types to add
   implementation note contrasting 'List of xxx' and 'One of xxx' and
   stating that any of these attributes can be represented as multiple
   instances (i.e., to avoid length overflow), per IEEE-ISTO PWG IPP WG
   review.
   Global - revised all comma-delimited examples to include both single-
   and multi-valued examples, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.2 printer-xri-supported text and
   examples to show optional *trailing* whitespace after '<' delimiters,
   per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.3 printer-name to break recommendations
   into separate implementation notes, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.20 printer-number-up-supported to add
   note explaining that this differs from the corresponding IPP
   attribute and is mapped from the largest reported value in IPP, per
   IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.22 printer-media-supported to separate
   examples of media sizes, types, and colors, per IEEE-ISTO PWG IPP WG
   review.
   Editorial - revised section 4.24 printer-resolution-supported text
   and examples to show optional *trailing* whitespace after '>'
   delimiters, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.34 printer-aliases to add Network
   Unicode note like printer-name, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.35 printer-device-id to explicitly list
   the required key/value pairs as in PWG IPP Everywhere, per IEEE-ISTO
   PWG IPP WG review.
   Editorial - revised section 4.37 printer-uuid to add example of a
   valid UUID per [RFC4122], per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.36 printer-device-service-count to add
   example, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.39 printer-charge-info-uri to add
   example, per IEEE-ISTO PWG IPP WG review.

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   Editorial - revised section 4.40 printer-geo-location to add example
   of a value 'geo:' URI per [RFC5870], per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 4.41 printer-ipp-features-supported to
   delete 'ipp-everywhere' and add 'unknown' (with explanation), per
   IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 7 IANA Considerations to correct
   truncation of some OIDs, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 7.2 Registration of Attribute Types to
   delete issue for OID assignments, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 8 Internationalization Considerations to
   add detailed note about Network Unicode [RFC5198] and avoiding use of
   C0 and C1 control characters, per IEEE-ISTO PWG IPP WG review.
   Editorial - revised section 9 Security Considerations to add note
   about security vulnerabilities caused by use of DEL or any C0 or C1
   control characters in names, per IEEE-ISTO PWG IPP WG review.
   Editorial - added appendix B Abbreviations, per IEEE-ISTO PWG IPP WG
   review.

   20 May 2012 - draft-mcdonald-ldap-printer-schema-02.txt
   Third draft - for IEEE-ISTO PWG IPP Everywhere project
   Cover - changed intended category to Standards Track for consistency
   w/ recent LDAP schema specs and IPP Everywhere recommendations.
   Global - replace 'must' w/ 'MUST', 'should' w/ 'SHOULD', and 'may' w/
   'can' or 'MAY' (as appropriate) for Standards Track document.
   Global - updated publication and expiration dates in copyright,
   header, footer, and boilerplate.
   Global - replaced [RFC1759] references (obsolete) w/ [RFC 3805], per
   IEEE-ISTO PWG IPP WG review.
   Global - replaced lowercase 'printer' with titlecase 'Printer' for
   readability and consistency with IPP standards usage.
   Revised section 1, to correct format of reference to IPP JPS3, per
   IEEE-ISTO PWG IPP WG review.
   Revised section 3.5, section 4.1, and section 4.2 to add references
   to IPP and IPPS URI scheme specs, per IEEE-ISTO PWG IPP WG review.
   Revised section 4.2 to correct reference for 'digest' and add
   reference for 'certificate' to [RFC5280], per IEEE-ISTO PWG IPP WG
   review.
   Revised sections 4.5, 4.6, 4.8, 4.29, 4.30, and 4.36 to add note
   about use of Network Unicode [RFC5198] and prohibition against all C0
   and C1 control characters except HT, CR, and LF, per IEEE-ISTO PWG
   IPP WG review.
   Revised section 4.9 to enumerate all known IPP versions (noting that
   IPP/1.0 is OBSOLETE) and refer to IANA IPP Registry, per IEEE-ISTO
   PWG IPP WG review.
   Revised section 4.22 to replace legacy examples w/ examples of media
   size names, media types, and media colors defined in [PWG5101.1], per
   IEEE-ISTO PWG IPP WG review.
   Revised section 4.24 to delete obscure note about delimiter, per
   IEEE-ISTO PWG IPP WG review.
   Revised sections 4.25, 4.31, 4.32, and 4.33 to add note about use of
   'unknown' (out-of-band value) ONLY when the correspond IPP or Printer

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   MIB attributes are not present (i.e., artifact of LDAP mapping), per
   IEEE-ISTO PWG IPP WG review.
   Revised section 4.39 to add exhaustive list of feature keywords from
   [PWG5100.JPS3] and [PWG5100.EVE], per IEEE-ISTO PWG IPP WG review.
   Added section 4.x 'printer-device-service-count' aligned w/
   "device-service-count" in [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG
   review.
   Added section 4.x 'printer-device-uuid' aligned w/ "device-uuid" in
   [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review.
   Revised sections 4.x to add length restrictions to unbounded strings
   (text, URI, and UUID) w/ maximum 255 octets (consistent w/ RFC 3712),
   verify attribute lengths (per source IPP attribute), and clarify
   "list of" (comma-delimited) versus "one of" (simple multi-valued) for
   all 'printer-xxx-supported' attributes, per IEEE-ISTO PWG IPP WG
   review.
   Revised section 7.2 to assign new OIDs for the LDAP Printer Schema
   new attributes, per IEEE-ISTO PWG IPP WG review.
   Revised section 10.1 to add BCP 14 to [RFC2119] definition, per
   IEEE-ISTO PWG IPP WG review.
   Revised section 10.1 and section 10.2 to move [RFC2617], [RFC3987],
   [RFC4122], [RFC5198], [RFC5246], [RFC5280], [RFC5870], [STD63] from
   informative to normative references, per IEEE-ISTO PWG IPP WG review.

   3 April 2012 - draft-mcdonald-ldap-printer-schema-01.txt
   Second draft - for IEEE-ISTO PWG IPP Everywhere project
   Global - changed [IPPEVE1] to [PWG5100.EVE] and [IPPJPS3] to
   [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review.
   Revised section 1.1, to add printer-charge-info-uri and printer-uuid
   to discussion of URI syntax, per IEEE-ISTO PWG IPP WG review.
   Revised section 1.2 and section 1.3, to add printer-device-id to
   discussions of equality and substring matching, per IEEE-ISTO PWG IPP
   WG review.
   Revised section 3.2, section 4, and section 7.2, to delete redundant
   printer-organization and printer-organizational-unit (already covered
   by 'O' and 'OU'), per IEEE-ISTO PWG IPP WG review.
   Revised section 3.2, section 4, and section 7.2, to add missing
   printer-charge-info, per IEEE-ISTO PWG IPP WG review.
   Revised section 3.5, section 4, and section 7.2, to rename
   printer-ipp-extensions-supported to printer-ipp-features-supported,
   per IEEE-ISTO PWG IPP WG review.
   Revised numerous section 4 subsections, to add references to
   [IANAIPP] or [RFC3805] as appropriate for enumerations and keywords,
   per IEEE-ISTO PWG IPP WG review.
   Revised section 4.2, to add 'negotiate' as value for 'auth' and
   references to [PWG5100.JPS3], [RFC4559], and [IANAIPP], per IEEE-ISTO
   PWG IPP WG review.
   Revised section 4.2, to use 'example.com' for all DNS names, per
   IEEE-ISTO PWG IPP WG review.
   Revised section 4.22 and section 4.23, to add normative reference to
   PWG Media Standardized Names [PWG5101.1], per IEEE-ISTO PWG IPP WG
   review.

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   Revised section 4.24, to divide notes into two separate paragraphs,
   per IEEE-ISTO PWG IPP WG review.
   Revised section 4.31, section 4.32, and section 4.33, to change
   'Values ...  include' to 'Values ...  are' (i.e., closed set), per
   IEEE-ISTO PWG IPP WG review.
   Revised section 4.35 printer-device-id, to add warning about ordering
   of required key/value pairs (first) and truncation only at key/value
   pair boundaries for interoperability, per IEEE-ISTO PWG IPP WG
   review.
   Revised section 4, to add printer-charge-info from [PWG5100.JPS3],
   per IEEE-ISTO PWG IPP WG review.
   Revised section 4.38 printer-geo-location, to change 'should' to
   'must' for conformance to [RFC5870], per IEEE-ISTO PWG IPP WG review.
   Revised section 4.39, to change printer-ipp-extensions-supported to
   printer-ipp-features-supported per [PWG5100.JPS3] and add examples,
   per IEEE-ISTO PWG IPP WG review.
   Revised section 4 subsection printer-uuid, to change 'should' to
   'must' for conformance to [RFC4122], per IEEE-ISTO PWG IPP WG review.
   Revised section 10 References, to update out-of-date references.

   2 October 2011 - draft-mcdonald-ldap-printer-schema-00.txt
   Initial version - for IEEE-ISTO PWG IPP Everywhere project
   Revised document to add current I-D individual submission
   boilerplate.
   Revised Abstract and section 1 Introduction, to cite [PWG5107.2] and
   [PWG5100.JPS3] new attribute sources.
   Revised section 3.2 printerAbstract, to add new attributes from
   [PWG5107.2] and [IPPJPS3].
   Revised section 3.5, to add new attributes from [IPPJPS3].
   Revised section 4 Definition of Attribute Types, to add new
   attributes from [PWG5107.2] and [IPPJPS3] to table and later specific
   definitions.
   Revised section 7.2 Registration of Attribute Types, to add new
   attributes from [PWG5107.2] and [IPPJPS3] - new OIDs needed.
   Revised section 10 References, to update out-of-date references.




15.  Authors' Addresses

   Please send comments to the authors at the addresses listed below.


   Pat Fleming
   Independent
   51796 171 Ave
   Pine Island, MN 55963
   USA
   Phone: +1 507-356-8277
   Email: patfleminghtc@gmail.com

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   Ira McDonald
   High North Inc
   221 Ridge Ave
   Grand Marais, MI 49839
   USA
   Phone: +1 906-494-2434
   Email: blueroofmusic@gmail.com











































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