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Network Working Group P. Fleming
Request for Comments: 3712 IBM
Category: Informational I. McDonald
High North
February 2004
Lightweight Directory Access Protocol (LDAP):
Schema for Printer Services
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004). All Rights Reserved.
Abstract
This document defines a schema, object classes and attributes, for
printers and printer services, for use with directories that support
Lightweight Directory Access Protocol v3 (LDAP-TS). This document is
based on the printer attributes listed in Appendix E of Internet
Printing Protocol/1.1 (IPP) (RFC 2911). A few additional printer
attributes are based on definitions in the Printer MIB (RFC 1759).
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Rationale for using DirectoryString Syntax . . . . . . . 3
1.2. Rationale for using caseIgnoreMatch. . . . . . . . . . . 4
1.3. Rationale for using caseIgnoreSubstringsMatch. . . . . . 5
2. Terminology and Conventions. . . . . . . . . . . . . . . . . . 5
3. Definition of Object Classes . . . . . . . . . . . . . . . . . 6
3.1. slpServicePrinter. . . . . . . . . . . . . . . . . . . . 6
3.2. printerAbstract. . . . . . . . . . . . . . . . . . . . . 7
3.3. printerService . . . . . . . . . . . . . . . . . . . . . 8
3.4. printerServiceAuxClass . . . . . . . . . . . . . . . . . 8
3.5. printerIPP . . . . . . . . . . . . . . . . . . . . . . . 8
3.6. printerLPR . . . . . . . . . . . . . . . . . . . . . . . 9
4. Definition of Attribute Types. . . . . . . . . . . . . . . . . 9
4.1. printer-uri. . . . . . . . . . . . . . . . . . . . . . . 11
4.2. printer-xri-supported. . . . . . . . . . . . . . . . . . 11
4.3. printer-name . . . . . . . . . . . . . . . . . . . . . . 13
4.4. printer-natural-language-configured. . . . . . . . . . . 13
Fleming & McDonald Informational [Page 1]
RFC 3712 LDAP Schema for Printer Services February 2004
4.5. printer-location . . . . . . . . . . . . . . . . . . . . 14
4.6. printer-info . . . . . . . . . . . . . . . . . . . . . . 14
4.7. printer-more-info. . . . . . . . . . . . . . . . . . . . 14
4.8. printer-make-and-model . . . . . . . . . . . . . . . . . 15
4.9. printer-ipp-versions-supported . . . . . . . . . . . . . 15
4.10. printer-multiple-document-jobs-supported . . . . . . . . 16
4.11. printer-charset-configured . . . . . . . . . . . . . . . 16
4.12. printer-charset-supported. . . . . . . . . . . . . . . . 16
4.13. printer-generated-natural-language-supported . . . . . . 17
4.14. printer-document-format-supported. . . . . . . . . . . . 17
4.15. printer-color-supported. . . . . . . . . . . . . . . . . 18
4.16. printer-compression-supported. . . . . . . . . . . . . . 18
4.17. printer-pages-per-minute . . . . . . . . . . . . . . . . 18
4.18. printer-pages-per-minute-color . . . . . . . . . . . . . 19
4.19. printer-finishings-supported . . . . . . . . . . . . . . 19
4.20. printer-number-up-supported. . . . . . . . . . . . . . . 19
4.21. printer-sides-supported. . . . . . . . . . . . . . . . . 20
4.22. printer-media-supported. . . . . . . . . . . . . . . . . 20
4.23. printer-media-local-supported. . . . . . . . . . . . . . 20
4.24. printer-resolution-supported . . . . . . . . . . . . . . 21
4.25. printer-print-quality-supported. . . . . . . . . . . . . 22
4.26. printer-job-priority-supported . . . . . . . . . . . . . 22
4.27. printer-copies-supported . . . . . . . . . . . . . . . . 22
4.28. printer-job-k-octets-supported . . . . . . . . . . . . . 23
4.29. printer-current-operator . . . . . . . . . . . . . . . . 23
4.30. printer-service-person . . . . . . . . . . . . . . . . . 24
4.31. printer-delivery-orientation-supported . . . . . . . . . 24
4.32. printer-stacking-order-supported . . . . . . . . . . . . 24
4.33. printer-output-features-supported. . . . . . . . . . . . 25
4.34. printer-aliases. . . . . . . . . . . . . . . . . . . . . 25
5. Definition of Syntaxes . . . . . . . . . . . . . . . . . . . . 26
6. Definition of Matching Rules . . . . . . . . . . . . . . . . . 26
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 26
7.1. Registration of Object Classes . . . . . . . . . . . . . 26
7.2. Registration of Attribute Types. . . . . . . . . . . . . 27
8. Internationalization Considerations. . . . . . . . . . . . . . 28
9. Security Considerations. . . . . . . . . . . . . . . . . . . . 29
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10.1. Normative References . . . . . . . . . . . . . . . . . . 29
10.2. Informative References . . . . . . . . . . . . . . . . . 30
11. Acknowledgments. . . . . . . . . . . . . . . . . . . . . . . . 32
12. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 32
13. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 33
Fleming & McDonald Informational [Page 2]
RFC 3712 LDAP Schema for Printer Services February 2004
1. Introduction
This document defines several object classes to provide Lightweight
Directory Access Protocol v3 [LDAP-TS] 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] specific
information.
The schema defined in this document is based on the printer
attributes listed in Appendix E 'Generic Directory Schema' of
Internet Printing Protocol/1.1 (IPP) [RFC2911]. A few additional
printer attributes are based on definitions in the Printer MIB
[RFC1759].
The schema defined in this document is technically aligned with the
stable IANA-registered 'service:printer:' v2.0 template [SLP-PRT],
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' [RFC2252] rather than
'labeledURI' [RFC2079] for the 'printer-uri' attribute).
Please send comments directly to the authors at the addresses listed
in Section 13 "Authors' Addresses".
1.1. Rationale for using DirectoryString Syntax
The attribute syntax 'DirectoryString' (UTF-8 [RFC2279]) defined in
[RFC2252] is specified for several groups of string attributes that
are defined in this document:
1) URI
- printer-uri, printer-xri-supported, printer-more-info
The UTF-8 encoding is forward compatible with any future
deployment of (UTF-8 based) IRI (Internationalized Resource
Identifiers) [W3C-IRI] currently being developed by the W3C
Internationalization Working Group.
2) Description
- printer-name, printer-location, printer-info,
printer-make-and-model
Fleming & McDonald Informational [Page 3]
RFC 3712 LDAP Schema for Printer Services February 2004
The UTF-8 encoding supports descriptions in any language,
conformant with the "IETF Policy on Character Sets and Languages"
[RFC2277].
Note: The printer-natural-language-configured attribute contains
a language tag [RFC3066] for these description attributes (for
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.
1.2. Rationale for using caseIgnoreMatch
The EQUALITY matching rule 'caseIgnoreMatch' defined in [RFC2252] 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 [RFC2396], 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 [RFC1274].
Either equality matching rule choice would be a compromise:
a) case sensitive whole URI matching may 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);
Fleming & McDonald Informational [Page 4]
RFC 3712 LDAP Schema for Printer Services February 2004
b) case insensitive whole URI matching may 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.
3) Keyword
Case insensitive equality matching is more user-friendly for
keyword attributes.
1.3. Rationale for using caseIgnoreSubstringsMatch
The SUBSTR matching rule 'caseIgnoreSubstringsMatch' defined in
[RFC2252] 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 [RFC1274].
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.
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 BCP 14 [RFC2119].
Schema definitions are provided using LDAPv3 [LDAP-TS] description
formats. Definitions provided here are formatted (line wrapped) for
readability.
Fleming & McDonald Informational [Page 5]
RFC 3712 LDAP Schema for Printer Services February 2004
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 may 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 [SLP-PRT].
3.1. slpServicePrinter
( 1.3.18.0.2.6.254
NAME 'slpServicePrinter'
DESC 'Service Location Protocol (SLP) information.'
AUXILIARY
SUP slpService
)
Fleming & McDonald Informational [Page 6]
RFC 3712 LDAP Schema for Printer Services February 2004
This auxiliary class defines Service Location Protocol (SLPv2)
[RFC2608] specific information. It should be used with a structural
class such as printerService. It may be used to create new or extend
existing directory entries with SLP 'service:printer' abstract
service type information as defined in [SLP-PRT]. 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 $
printer-job-k-octets-supported $ printer-current-operator $
printer-service-person $
printer-delivery-orientation-supported $
printer-stacking-order-supported $
printer-output-features-supported )
)
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.
Fleming & McDonald Informational [Page 7]
RFC 3712 LDAP Schema for Printer Services February 2004
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
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.
This class should be used with a structural class.
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-multiple-document-jobs-supported )
)
Fleming & McDonald Informational [Page 8]
RFC 3712 LDAP Schema for Printer Services February 2004
This auxiliary class defines Internet Printing Protocol (IPP/1.1)
[RFC2911] information. It should be used with a structural class
such as printerService. It is used to extend structural classes with
IPP specific printer information.
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 should be
used with a structural class such as printerService. It is used to
identify directory entries that support LPR.
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 6 of [RFC2252] (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 8 of [RFC2252] and/or Section 2 of [RFC3698]
(see Section 6 'Definition of Matching Rules' below).
The following table is a summary of the attribute names defined by
this document and their corresponding names from [RFC2911]. Some
attribute names described in [RFC2911] have been prefixed with
'printer-' as recommended in [RFC2926], to address the flat namespace
for LDAP identifiers.
Fleming & McDonald Informational [Page 9]
RFC 3712 LDAP Schema for Printer Services February 2004
LDAP & SLP Printer Schema IPP Model [RFC2911]
------------------------------ -------------------------------------
printer-uri
printer-xri-supported
[IPP printer-uri-supported]
[IPP uri-authentication-supported]
[IPP 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-current-operator
printer-service-person
printer-delivery-orientation-supported
printer-stacking-order-supported
printer-output-features-supported
printer-aliases
Fleming & McDonald Informational [Page 10]
RFC 3712 LDAP Schema for Printer Services February 2004
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 should be listed in printer-xri-supported.
Values of URI should conform to [RFC2396], although URI schemes may
be defined which do not conform to [RFC2396] (see [RFC2717] and
[RFC2718]).
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: 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.
4.2. printer-xri-supported
( 1.3.18.0.2.4.1107
NAME 'printer-xri-supported'
DESC 'The unordered list of XRI (extended resource identifiers)
supported by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
)
A list of XRI (extended resource identifiers) supported by this
printer. Each value of this list should consist of a URI (uniform
resource identifier) followed by (optional) authentication and
security fields.
Values of URI should conform to [RFC2396], although URI schemes may
be defined which do not conform to [RFC2396] (see [RFC2717] and
[RFC2718]).
Fleming & McDonald Informational [Page 11]
RFC 3712 LDAP Schema for Printer Services February 2004
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], defined values of the 'auth' field include:
'none' (no authentication for this URI)
'requesting-user-name' (from operation request)
'basic' (HTTP/1.1 Basic [RFC2617])
'digest' (HTTP/1.1 Basic, [RFC2617])
'certificate' (from certificate)
A missing 'sec' field should be interpreted to mean 'none'. Per
IPP/1.1 [RFC2911], defined values of the 'sec' field include:
'none' (no security for this URI)
'ssl3' (Netscape SSL3)
'tls' (IETF TLS/1.0, [RFC2246])
Each XRI field should be delimited by '<'. For example:
'uri=ipp://foo.com< auth=digest< sec=tls<'
'uri=lpr://bar.com< auth=none< sec=none<'
'uri=mailto:printer@foobar.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
[SLP-PRT]. Whitespace is permitted after (but not before) the
delimiter '<'. Note that this delimiter differs from printer-
resolution-supported.
Note: See Sections 1.1, 1.2, and 1.3 for rationale for design
choices.
Fleming & McDonald Informational [Page 12]
RFC 3712 LDAP Schema for Printer Services February 2004
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{127}
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. 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
[RFC2396]).
4.4. printer-natural-language-configured
( 1.3.18.0.2.4.1119
NAME 'printer-natural-language-configured'
DESC 'The configured natural language in which error and status
messages will be generated (by default) by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
SINGLE-VALUE
)
Also, a possible natural language for printer 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 should conform to "Tags for the
Identification of Languages" [RFC3066]. For example:
'en-us' (English as spoken in the US)
'fr-fr' (French as spoken in France)
For consistency with IPP/1.1 [RFC2911], language tags in this
attribute should be lowercase normalized.
Fleming & McDonald Informational [Page 13]
RFC 3712 LDAP Schema for Printer Services February 2004
4.5. printer-location
( 1.3.18.0.2.4.1136
NAME 'printer-location'
DESC 'The physical location of this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
SINGLE-VALUE
)
For example:
'Room 123A'
'Second floor of building XYZ'
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{127}
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'
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
)
Fleming & McDonald Informational [Page 14]
RFC 3712 LDAP Schema for Printer Services February 2004
For example, this could be an HTTP type 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 [RFC2396], although URI schemes may
be defined which do not conform to [RFC2396] (see [RFC2717] and
[RFC2718]).
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{127}
SINGLE-VALUE
)
Note: The printer manufacturer may initially populate this
attribute.
4.9. printer-ipp-versions-supported
( 1.3.18.0.2.4.1133
NAME 'printer-ipp-versions-supported'
DESC 'IPP protocol version(s) that this printer supports.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
)
The IPP protocol version(s) should include major and minor versions,
i.e., the exact version numbers for which this Printer implementation
meets the IPP version-specific conformance requirements.
Fleming & McDonald Informational [Page 15]
RFC 3712 LDAP Schema for Printer Services February 2004
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
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 in which error and status messages will
be generated (by default) by this printer.'
EQUALITY caseIgnoreMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{63}
SINGLE-VALUE
)
Also, a possible charset for printer string attributes set by
operator, system administrator, or manufacturer. For example:
'utf-8' (ISO 10646/Unicode in UTF-8 transform [RFC2279])
'iso-8859-1' (Latin1)
Values of charset tags should be defined in the IANA Registry of
Coded Character Sets [IANA-CHAR] (see also [RFC2978]) and the
'(preferred MIME name)' should be used as the charset tag in this
attribute.
For consistency 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 'Set of charsets supported for the attribute values of syntax
DirectoryString for this directory entry.'
EQUALITY caseIgnoreMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{63}
)
Fleming & McDonald Informational [Page 16]
RFC 3712 LDAP Schema for Printer Services February 2004
For example:
'utf-8' (ISO 10646/Unicode in UTF-8 transform [RFC2279])
'iso-8859-1' (Latin1)
Values of charset tags should be defined in the IANA Registry of
Coded Character Sets [IANA-CHAR] (see also [RFC2978]) and the
'(preferred MIME name)' should be used as the charset tag in this
attribute.
For consistency 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 'Natural language(s) supported for this directory entry.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{63}
)
Values of language tags should conform to "Tags for the
Identification of Languages" [RFC3066]. For example:
'en-us' (English as spoken in the US)
'fr-fr' (French as spoken in France)
For consistency 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 'The possible source document formats which may be interpreted
and printed by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
)
Values of document formats should be MIME media types defined in the
IANA Registry of MIME Media Types [IANA-MIME] (see also [RFC2048]).
Fleming & McDonald Informational [Page 17]
RFC 3712 LDAP Schema for Printer Services February 2004
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 'Compression algorithms supported by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{255}
)
Values defined in IPP/1.1 [RFC2911] 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 may 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.
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RFC 3712 LDAP Schema for Printer Services February 2004
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 may 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.
4.19. printer-finishings-supported
( 1.3.18.0.2.4.1125
NAME 'printer-finishings-supported'
DESC 'The possible finishing operations supported by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{255}
)
Values defined in IPP/1.1 [RFC2911] 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 'The possible numbers of print-stream pages to impose upon a
single side of an instance of a selected medium.'
EQUALITY integerMatch
ORDERING integerOrderingMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.27
)
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RFC 3712 LDAP Schema for Printer Services February 2004
Values defined in IPP/1.1 [RFC2911] include: '1', '2', and '4'.
Note: Implementations may support other values.
4.21. printer-sides-supported
( 1.3.18.0.2.4.1123
NAME 'printer-sides-supported'
DESC 'The number 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{127}
)
Values defined in IPP/1.1 [RFC2911] include: 'one-sided', 'two-
sided-long-edge', 'two-sided-short-edge'.'
4.22. printer-media-supported
( 1.3.18.0.2.4.1122
NAME 'printer-media-supported'
DESC 'The standard names/types/sizes (and optional color suffixes) of
the media supported by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{255}
)
Values are defined in IPP/1.1 [RFC2911] or any IANA registered
extensions. For example:
'iso-a4'
'envelope'
'na-letter-white'
4.23. printer-media-local-supported
( 1.3.18.0.2.4.1117
NAME 'printer-media-local-supported'
DESC 'Site-specific names of media supported by this printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{255}
)
Values should be in the natural language specified by printer-
natural-language-configured.
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RFC 3712 LDAP Schema for Printer Services February 2004
For example:
'purchasing-form' (site-specific name)
as opposed to 'na-letter' (standard keyword from IPP/1.1 [RFC2911])
in the printer-media-supported attribute.
4.24. printer-resolution-supported
( 1.3.18.0.2.4.1121
NAME 'printer-resolution-supported'
DESC 'List of resolutions supported for printing documents by this
printer.'
EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{255}
)
Each resolution value should 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 should be delimited by '>'. For example:
'300> 300> dpi>'
'600> 600> dpi>'
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 [RFC1759] (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
[SLP-PRT]. Whitespace is permitted after (but not before) the
delimiter '>'. Note that this delimiter differs from printer-xri-
supported.
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RFC 3712 LDAP Schema for Printer Services February 2004
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{127}
)
Values defined in IPP/1.1 [RFC2911] include:
'unknown'
'draft'
'normal'
'high'
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
'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 may 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
)
Fleming & McDonald Informational [Page 22]
RFC 3712 LDAP Schema for Printer Services February 2004
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 [SLP-
PRT].
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 [SLP-
PRT].
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{127}
SINGLE-VALUE
)
The value of this attribute should include information that would
enable other humans to reach the operator, such as a telephone
number.
Fleming & McDonald Informational [Page 23]
RFC 3712 LDAP Schema for Printer Services February 2004
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{127}
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.
4.31. printer-delivery-orientation-supported
( 1.3.18.0.2.4.1114
NAME 'printer-delivery-orientation-supported'
DESC 'The possible delivery orientations of pages as they are printed
and ejected from this printer.'
EQUALITY caseIgnoreMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
)
Values defined include:
'unknown'
'face-up'
'face-down'
Note: The syntax and values for this attribute are aligned with the
equivalent attribute in the 'service:printer:' v2.0 template [SLP-
PRT].
4.32. printer-stacking-order-supported
( 1.3.18.0.2.4.1115
NAME 'printer-stacking-order-supported'
DESC 'The possible stacking order of pages as they are printed and
ejected from this printer.'
EQUALITY caseIgnoreMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
)
Fleming & McDonald Informational [Page 24]
RFC 3712 LDAP Schema for Printer Services February 2004
Values defined include:
'unknown'
'first-to-last'
'last-to-first'
Note: The syntax and values for this attribute are aligned with the
equivalent attribute in the 'service:printer:' v2.0 template [SLP-
PRT].
4.33. printer-output-features-supported
( 1.3.18.0.2.4.1116
NAME 'printer-output-features-supported'
DESC 'The possible output features supported by this printer.'
EQUALITY caseIgnoreMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{127}
)
Values defined include:
'unknown'
'bursting'
'decollating'
'page-collating'
'offset-stacking'
Note: The syntax and values for this attribute are aligned with the
equivalent attribute in the 'service:printer:' v2.0 template [SLP-
PRT].
Note: Implementations may support other values.
4.34. printer-aliases
( 1.3.18.0.2.4.1108
NAME 'printer-aliases'
DESC 'List of 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{127}
)
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.
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RFC 3712 LDAP Schema for Printer Services February 2004
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 6 of [RFC2252], 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 [RFC2279])
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 8 of [RFC2252] and/or Section 2 of
[RFC3698], 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
7. IANA Considerations
This document does not define any new syntaxes or matching rules.
This document does define the following Object Identifier
Descriptors. They have been registered by the IANA:
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
Fleming & McDonald Informational [Page 26]
RFC 3712 LDAP Schema for Printer Services February 2004
Specification: RFC3712
Author/Change Controller:
Pat Fleming
IBM
Highway 52 N
Rochester, MN 55901
USA
Phone: +1 507-253-7583
EMail: flemingp@us.ibm.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
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: RFC3712
Author/Change Controller:
Pat Fleming
IBM
Highway 52 N
Rochester, MN 55901
USA
Phone: +1 507-253-7583
EMail: flemingp@us.ibm.com
Fleming & McDonald Informational [Page 27]
RFC 3712 LDAP Schema for Printer Services February 2004
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
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
8. Internationalization Considerations
All text string attributes defined in this document of syntax
[RFC2279], as required by [RFC2252].
A language tag [RFC3066] for all of the text string attributes
defined in this document is contained in the printer-natural-
language-configured attribute.
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RFC 3712 LDAP Schema for Printer Services February 2004
Therefore, all object classes defined in this document conform to the
"IETF Policy on Character Sets and Languages" [RFC2277].
9. Security Considerations
See [RFC2829] for detailed guidance on authentication methods for
LDAP. See [RFC2830] for detailed guidance of using TLS/1.0 [RFC2246]
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.
For additional security considerations of deploying printers in an
IPP environment, see Section 8 of [RFC2911].
10. References
10.1. Normative References
[IANA-CHAR] IANA Registry of Character Sets
http://www.iana.org/assignments/charset-reg/...
[IANA-MIME] IANA Registry of MIME Media Types
http://www.iana.org/assignments/media-types/...
[LDAP-TS] Hodges, J. and R. Morgan, "Lightweight Directory Access
Protocol (v3): Technical Specification", RFC 3377,
September 2002.
[RFC1274] Barker, P. and S. Kille, "The COSINE and Internet X.500
Schema", RFC 1274, November 1991.
[RFC1759] Smith, R., Wright, F., Hastings, T., Zilles, S. and J.
Gyllenskog, "Printer MIB", RFC 1759, March 1995.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2252] Wahl, M., Coulbeck, T., Howes, T. and S. Kille,
"Lightweight Directory Access Protocol (v3): Attribute
Syntax Definitions", RFC 2252, December 1997.
Fleming & McDonald Informational [Page 29]
RFC 3712 LDAP Schema for Printer Services February 2004
[RFC2396] Berners-Lee. T., Fielding, R. and L. Masinter, "URI
Generic Syntax", RFC 2396, August 1998.
[RFC2829] Wahl, M., Alvestrand, H., Hodges, J. and R. Morgan,
"Authentication Methods for LDAP", RFC 2829, May 2000.
[RFC2830] Hodges, J., Morgan, R. and M. Wahl, "Lightweight
Directory Access Protocol (v3): Extension for Transport
Layer Security", RFC 2830, May 2000.
[RFC2911] Hastings, T., Ed.., Herrito, R., deBry, 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.
[RFC3066] Alvestrand, H., "Tags for the Identification of
Languages", BCP 47, RFC 3066, January 2001.
[RFC3698] Zeilenga, K., Ed., "Lightweight Directory Access Protocol
(LDAP): Additional Matching Rules", RFC 3698, February
2004.
10.2. Informative References
[IANA-SLPT] IANA Registry of SLP Templates
http://www.iana.org/assignments/svrloc-templates/...
[RFC1179] McLaughlin, L., "Line Printer Daemon Protocol", RFC 1179,
August 1990.
[RFC1951] Deutsch, P., "DEFLATE Compressed Data Format
Specification Version 1.3", RFC 1951, May 1996.
[RFC1952] Deutsch, P., "GZIP File Format Specification Version
4.3", RFC 1952, May 1996.
[RFC1977] Schryver, V., "PPP BSD Compression Protocol", RFC 1977,
August 1996.
[RFC2048] Freed, N., Klensin, J. and J. Postel, "Multipurpose
Internet Mail Extensions (MIME) Part Four: Registration
Procedures", BCP 13, RFC 2048, November 1996.
Fleming & McDonald Informational [Page 30]
RFC 3712 LDAP Schema for Printer Services February 2004
[RFC2079] Smith, M., "Definition of an X.500 Attribute Type and an
Object Class to Hold Uniform Resource Identifiers
(URIs)", RFC 2079, January 1997.
[RFC2246] Dierks, T. and C. Allen, "TLS Protocol Version 1.0", RFC
2246, January 1999.
[RFC2277] Alvestrand, H., "IETF Policy on Character Sets and
Languages", RFC 2277, January 1998.
[RFC2279] Yergeau, F., "UTF-8, a Transformation Format of ISO
10646", RFC 2279, January 1998.
[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.
[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.
[RFC2717] Petke, R. and I. King, "Registration Procedures for URL
Scheme Names", RFC 2717, November 1999.
[RFC2718] Masinter, L., Alvestrand, H., Zigmond, D. and R. Petke,
"Guidelines for new URL Schemes", BCP 19, RFC 2718,
November 1999.
[RFC2978] Freed, N. and J.Postel, "IANA Charset Registration
Procedures", RFC2978, October 2000.
[SLP-PRT] St. Pierre, Isaacson, McDonald. Definition of the
Printer Abstract Service Type v2.0, <durable URL below>,
May 2000. Reviewed and approved by IETF SLP Designated
Expert, according to Section 5 'IANA Considerations' in
[RFC2609].
Archived in the IANA Registry of SLP Templates [IANA-
SLPT] at: http://www.iana.org/assignments/svrloc-
templates/printer.2.0.en
[W3C-IRI] Duerst, Suignard, "Internationalized Resource Identifiers
(IRI), Work in Progress.
Fleming & McDonald Informational [Page 31]
RFC 3712 LDAP Schema for Printer Services February 2004
11. Acknowledgments
The editors wish to acknowledge the very significant contributions of
Ken Jones (Bytemobile) and Harry Lewis (IBM) during the development
of this document.
Thanks to Patrik Faltstrom (Cisco), Ryan Moats (Lemur Networks),
Robert Moore (IBM), Lee Rafalow (IBM), Kimberly Reger (IBM), Kurt
Zeilenga (OpenLDAP), and the members of the IETF IPP Working Group,
for review comments and help in preparing this document.
12. Authors' Addresses
Please send comments to the authors at the addresses listed below.
Pat Fleming
IBM
Highway 52 N
Rochester, MN 55901
USA
Phone: +1 507-253-7583
EMail: flemingp@us.ibm.com
Ira McDonald
High North Inc
221 Ridge Ave
Grand Marais, MI 49839
USA
Phone: +1 906-494-2434
Email: imcdonald@sharplabs.com
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RFC 3712 LDAP Schema for Printer Services February 2004
13. Full Copyright Statement
Copyright (C) The Internet Society (2004). This document is subject
to the rights, licenses and restrictions contained in BCP 78 and
except as set forth therein, the authors retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE
REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE
INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
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Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Fleming & McDonald Informational [Page 33]
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