Network Working Group I. McDonald
Request for Comments: 3808 High North
Category: Informational June 2004
IANA Charset MIB
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
This IANA Charset MIB is now an IANA registry. In particular, a
single textual convention 'IANACharset' is defined that may be used
to specify charset labels in MIB objects. 'IANACharset' was
extracted from Printer MIB v2 (RFC 3805). 'IANACharset' was
originally defined (and mis-named) as 'CodedCharSet' in Printer MIB
v1 (RFC 1759). A tool has been written in C, that may be used by
IANA to regenerate this IANA Charset MIB, when future charsets are
registered in accordance with the IANA Charset Registration
Procedures (RFC 2978).
Table of Contents
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Conformance Terminology . . . . . . . . . . . . . . . . 2
1.2. Charset Terminology . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework. . . . . . . . . . 2
3. Generation of IANA Charset MIB. . . . . . . . . . . . . . . . 3
4. Definition of IANA Charset MIB. . . . . . . . . . . . . . . . 3
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
6. Internationalization Considerations . . . . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 11
8. Acknowledgements. . . . . . . . . . . . . . . . . . . . . . . 11
9. References. . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.1. Normative References. . . . . . . . . . . . . . . . . . 11
9.2. Informative References. . . . . . . . . . . . . . . . . 12
10. Authors' Addresses. . . . . . . . . . . . . . . . . . . . . . 13
11. Full Copyright Statement. . . . . . . . . . . . . . . . . . . 14
McDonald Informational [Page 1]RFC 3808 IANA Charset MIB June 2004
1. Introduction
This IANA Charset MIB [CHARMIB] module defines the single textual
convention 'IANACharset'. Once adopted, all future versions of the
IANA Charset MIB [CHARMIB] may be machine-generated whenever the IANA
Charset Registry [CHARSET] is updated by IANA staff according to the
procedures defined in [RFC2978], using the utility [CHARGEN]
described in section 3 of this document or any other machine-
generation method.
It is strongly recommended that future updates to the IANA Charset
MIB [CHARMIB] be machine-generated (rather than hand-edited) to avoid
asynchrony between the IANA Charset Registry [CHARSET] and the IANA
Charset MIB [CHARMIB].
Note: Questions and comments on this IANA Charset MIB [CHARMIB]
should be sent to the editor (imcdonald@sharplabs.com) and IANA
(iana@iana.org) with a copy to the IETF Charsets mailing list (ietf-
charset@iana.org).
1.1. Conformance Terminology
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, RFC 2119
[RFC2119].
1.2. Charset Terminology
The following terms are used in this specification, exactly as
defined in section 1 'Definitions and Notation' of the IANA Charset
Registration Procedures [RFC2978]: "character", "charset", "coded
character set (CCS)", and "character encoding scheme (CES)".
2. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579], and STD 58, RFC 2580
[RFC2580].
McDonald Informational [Page 2]
RFC 3808 IANA Charset MIB June 2004
3. Generation of IANA Charset MIB
Intellectual Property: The C language utility 'ianachar.c' [CHARGEN]
and the IANA Charset MIB template file [CHARTEMP] are hereby donated
by the author (Ira McDonald) to IANA, in perpetuity, free of license
or any other restraint.
The [CHARGEN] utility may be used to generate an updated version of
the 'IANACharset' textual convention by reading and parsing the
(currently plaintext) IANA Charset Registry [CHARSET].
This utility parses each charset registration, finding (in order):
1) The 'Name' field (which is saved for a fallback - see below);
2) The 'MIBenum' field (which contains the IANA-assigned positive
decimal enum value); and
3) The (usually present) 'Alias' field that begins with 'cs' (that
contains the IANA-assigned enum label). If an 'Alias' field is
not found, the utility constructs one from the 'Name' field by:
- Beginning the enum label with a lowercase 'cs' prefix;
- Copying _only_ alpha/numeric characters from the 'Name' field
to the enum label (ignoring punctuation, whitespace, etc.).
4. Definition of IANA Charset MIB
IANA-CHARSET-MIB DEFINITIONS ::= BEGIN
-- http://www.iana.org/assignments/ianacharset-mib
IMPORTS
MODULE-IDENTITY,
mib-2
FROM SNMPv2-SMI -- [RFC2578]
TEXTUAL-CONVENTION
FROM SNMPv2-TC; -- [RFC2579]
ianaCharsetMIB MODULE-IDENTITY
LAST-UPDATED "200406080000Z"
ORGANIZATION "IANA"
CONTACT-INFO " Internet Assigned Numbers Authority
Postal: ICANN
4676 Admiralty Way, Suite 330
Marina del Rey, CA 90292
McDonald Informational [Page 3]RFC 3808 IANA Charset MIB June 2004
Tel: +1 310 823 9358
E-Mail: iana@iana.org"
DESCRIPTION "This MIB module defines the IANACharset
TEXTUAL-CONVENTION. The IANACharset TC is used to
specify the encoding of string objects defined in
a MIB.
Each version of this MIB will be released based on
the IANA Charset Registry file (see RFC 2978) at
http://www.iana.org/assignments/character-sets.
Note: The IANACharset TC, originally defined in
RFC 1759, was inaccurately named CodedCharSet.
Note: Best practice is to define new MIB string
objects with invariant UTF-8 (RFC 3629) syntax
using the SnmpAdminString TC (defined in RFC 3411)
in accordance with IETF Policy on Character Sets and
Languages (RFC 2277).
Copyright (C) The Internet Society (2004). The
initial version of this MIB module was published
in RFC 3808; for full legal notices see the RFC
itself. Supplementary information may be
available on
http://www.ietf.org/copyrights/ianamib.html."
-- revision history
REVISION "200406080000Z"
DESCRIPTION "Original version transferred from Printer MIB,
generated from the IANA maintained assignments
http://www.iana.org/assignments/character-sets."
::= { mib-2 106 }
IANACharset ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Specifies an IANA registered 'charset' - coded character set
(CCS) plus optional character encoding scheme (CES) - terms
defined in 'IANA Charset Registration Procedures' (RFC 2978).
Objects of this syntax are used to specify the encoding for
string objects defined in one or more MIBs. For example, the
prtLocalizationCharacterSet, prtInterpreterDefaultCharSetIn, and
prtInterpreterDefaultCharSetOut objects defined in Printer MIB.
McDonald Informational [Page 4]RFC 3808 IANA Charset MIB June 2004
The current list of 'charset' names and enumerated values
is contained in the IANA Character Set Registry at:
http://www.iana.org/assignments/character-sets
Enum names are derived from the IANA Charset Registry 'Alias'
fields that begin with 'cs' (for character set).
Enum values are derived from the parallel 'MIBenum' fields."
SYNTAX INTEGER {
other(1), -- used if the designated
-- character set is not currently
-- registered by IANA
unknown(2), -- used as a default value
csASCII(3),
csISOLatin1(4),
csISOLatin2(5),
csISOLatin3(6),
csISOLatin4(7),
csISOLatinCyrillic(8),
csISOLatinArabic(9),
csISOLatinGreek(10),
csISOLatinHebrew(11),
csISOLatin5(12),
csISOLatin6(13),
csISOTextComm(14),
csHalfWidthKatakana(15),
csJISEncoding(16),
csShiftJIS(17),
csEUCPkdFmtJapanese(18),
csEUCFixWidJapanese(19),
csISO4UnitedKingdom(20),
csISO11SwedishForNames(21),
csISO15Italian(22),
csISO17Spanish(23),
csISO21German(24),
csISO60DanishNorwegian(25),
csISO69French(26),
csISO10646UTF1(27),
csISO646basic1983(28),
csINVARIANT(29),
csISO2IntlRefVersion(30),
csNATSSEFI(31),
csNATSSEFIADD(32),
csNATSDANO(33),
csNATSDANOADD(34),
csISO10Swedish(35),
csKSC56011987(36),
csISO2022KR(37),
McDonald Informational [Page 5]RFC 3808 IANA Charset MIB June 2004
csEUCKR(38),
csISO2022JP(39),
csISO2022JP2(40),
csISO13JISC6220jp(41),
csISO14JISC6220ro(42),
csISO16Portuguese(43),
csISO18Greek7Old(44),
csISO19LatinGreek(45),
csISO25French(46),
csISO27LatinGreek1(47),
csISO5427Cyrillic(48),
csISO42JISC62261978(49),
csISO47BSViewdata(50),
csISO49INIS(51),
csISO50INIS8(52),
csISO51INISCyrillic(53),
csISO54271981(54),
csISO5428Greek(55),
csISO57GB1988(56),
csISO58GB231280(57),
csISO61Norwegian2(58),
csISO70VideotexSupp1(59),
csISO84Portuguese2(60),
csISO85Spanish2(61),
csISO86Hungarian(62),
csISO87JISX0208(63),
csISO88Greek7(64),
csISO89ASMO449(65),
csISO90(66),
csISO91JISC62291984a(67),
csISO92JISC62991984b(68),
csISO93JIS62291984badd(69),
csISO94JIS62291984hand(70),
csISO95JIS62291984handadd(71),
csISO96JISC62291984kana(72),
csISO2033(73),
csISO99NAPLPS(74),
csISO102T617bit(75),
csISO103T618bit(76),
csISO111ECMACyrillic(77),
csa71(78),
csa72(79),
csISO123CSAZ24341985gr(80),
csISO88596E(81),
csISO88596I(82),
csISO128T101G2(83),
csISO88598E(84),
csISO88598I(85),
McDonald Informational [Page 6]RFC 3808 IANA Charset MIB June 2004
csISO139CSN369103(86),
csISO141JUSIB1002(87),
csISO143IECP271(88),
csISO146Serbian(89),
csISO147Macedonian(90),
csISO150(91),
csISO151Cuba(92),
csISO6937Add(93),
csISO153GOST1976874(94),
csISO8859Supp(95),
csISO10367Box(96),
csISO158Lap(97),
csISO159JISX02121990(98),
csISO646Danish(99),
csUSDK(100),
csDKUS(101),
csKSC5636(102),
csUnicode11UTF7(103),
csISO2022CN(104),
csISO2022CNEXT(105),
csUTF8(106),
csISO885913(109),
csISO885914(110),
csISO885915(111),
csISO885916(112),
csGBK(113),
csGB18030(114),
csOSDEBCDICDF0415(115),
csOSDEBCDICDF03IRV(116),
csOSDEBCDICDF041(117),
csUnicode(1000),
csUCS4(1001),
csUnicodeASCII(1002),
csUnicodeLatin1(1003),
csUnicodeIBM1261(1005),
csUnicodeIBM1268(1006),
csUnicodeIBM1276(1007),
csUnicodeIBM1264(1008),
csUnicodeIBM1265(1009),
csUnicode11(1010),
csSCSU(1011),
csUTF7(1012),
csUTF16BE(1013),
csUTF16LE(1014),
csUTF16(1015),
csCESU8(1016),
csUTF32(1017),
csUTF32BE(1018),
McDonald Informational [Page 7]RFC 3808 IANA Charset MIB June 2004
csUTF32LE(1019),
csBOCU1(1020),
csWindows30Latin1(2000),
csWindows31Latin1(2001),
csWindows31Latin2(2002),
csWindows31Latin5(2003),
csHPRoman8(2004),
csAdobeStandardEncoding(2005),
csVenturaUS(2006),
csVenturaInternational(2007),
csDECMCS(2008),
csPC850Multilingual(2009),
csPCp852(2010),
csPC8CodePage437(2011),
csPC8DanishNorwegian(2012),
csPC862LatinHebrew(2013),
csPC8Turkish(2014),
csIBMSymbols(2015),
csIBMThai(2016),
csHPLegal(2017),
csHPPiFont(2018),
csHPMath8(2019),
csHPPSMath(2020),
csHPDesktop(2021),
csVenturaMath(2022),
csMicrosoftPublishing(2023),
csWindows31J(2024),
csGB2312(2025),
csBig5(2026),
csMacintosh(2027),
csIBM037(2028),
csIBM038(2029),
csIBM273(2030),
csIBM274(2031),
csIBM275(2032),
csIBM277(2033),
csIBM278(2034),
csIBM280(2035),
csIBM281(2036),
csIBM284(2037),
csIBM285(2038),
csIBM290(2039),
csIBM297(2040),
csIBM420(2041),
csIBM423(2042),
csIBM424(2043),
csIBM500(2044),
csIBM851(2045),
McDonald Informational [Page 8]RFC 3808 IANA Charset MIB June 2004
csIBM855(2046),
csIBM857(2047),
csIBM860(2048),
csIBM861(2049),
csIBM863(2050),
csIBM864(2051),
csIBM865(2052),
csIBM868(2053),
csIBM869(2054),
csIBM870(2055),
csIBM871(2056),
csIBM880(2057),
csIBM891(2058),
csIBM903(2059),
csIBBM904(2060),
csIBM905(2061),
csIBM918(2062),
csIBM1026(2063),
csIBMEBCDICATDE(2064),
csEBCDICATDEA(2065),
csEBCDICCAFR(2066),
csEBCDICDKNO(2067),
csEBCDICDKNOA(2068),
csEBCDICFISE(2069),
csEBCDICFISEA(2070),
csEBCDICFR(2071),
csEBCDICIT(2072),
csEBCDICPT(2073),
csEBCDICES(2074),
csEBCDICESA(2075),
csEBCDICESS(2076),
csEBCDICUK(2077),
csEBCDICUS(2078),
csUnknown8BiT(2079),
csMnemonic(2080),
csMnem(2081),
csVISCII(2082),
csVIQR(2083),
csKOI8R(2084),
csHZGB2312(2085),
csIBM866(2086),
csPC775Baltic(2087),
csKOI8U(2088),
csIBM00858(2089),
csIBM00924(2090),
csIBM01140(2091),
csIBM01141(2092),
csIBM01142(2093),
McDonald Informational [Page 9]RFC 3808 IANA Charset MIB June 2004
csIBM01143(2094),
csIBM01144(2095),
csIBM01145(2096),
csIBM01146(2097),
csIBM01147(2098),
csIBM01148(2099),
csIBM01149(2100),
csBig5HKSCS(2101),
csIBM1047(2102),
csPTCP154(2103),
csAmiga1251(2104),
csKOI7switched(2105),
cswindows1250(2250),
cswindows1251(2251),
cswindows1252(2252),
cswindows1253(2253),
cswindows1254(2254),
cswindows1255(2255),
cswindows1256(2256),
cswindows1257(2257),
cswindows1258(2258),
csTIS620(2259),
reserved(3000)
}
END
5. IANA Considerations
IANA has assigned a base arc in the 'mgmt' (standards track) OID tree
for the 'ianaCharset' MODULE-IDENTITY defined in the IANA Charset MIB
[CHARMIB].
Whenever any 'charset' is added to the IANA Charset Registry
[CHARSET], a new version of the IANA Charset MIB [CHARMIB] may be
machine-generated using the C language utility [CHARGEN], described
in section 3 of this document or some other utility.
6. Internationalization Considerations
The IANA Charset MIB [CHARMIB] defines the 'IANACharset' textual
convention that may be used in a given MIB module to supply explicit
character set labels for one or more text string objects defined in
that MIB module.
For example, the Printer MIB [RFC1759] defines the three character
set label objects 'prtLocalizationCharacterSet' (for description and
console strings), 'prtInterpreterDefaultCharSetIn' (for received
McDonald Informational [Page 10]RFC 3808 IANA Charset MIB June 2004
print job input data), and 'prtIntpreterDefaultCharSetOut' (for
processed print job output data).
The IANA Charset MIB [CHARMIB] supports implementation of the best
practices specified in "IETF Policy on Character Sets and Languages"
[RFC2277].
Note: The use of the 'SnmpAdminString' textual convention defined in
[RFC3411], which has a fixed character set of UTF-8 [RFC3629], is
STRONGLY RECOMMENDED in defining new MIB modules. The IANA Charset
MIB [CHARMIB] supports locale-specific MIB objects with variable
character sets.
7. Security Considerations
This MIB module does not define any management objects. Instead, it
defines a (set of) textual convention(s) which may be used by other
MIB modules to define management objects.
Meaningful security considerations can only be written in the MIB
modules that define management objects. Therefore, this document has
no impact on the security of the Internet.
8. Acknowledgements
The editor would like to thank: Bert Wijnen (Lucent) for his
original suggestion that the 'IANACharset' textual convention should
be extracted from Printer MIB v2 [RFC3805]; Ron Bergman (Hitachi
Printing Solutions) and Harry Lewis (IBM) for their many years of
effort as editors of Printer MIB v2 [RFC3805].
9. References
9.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2277] Alvestrand, H., "IETF Policy on Character Sets and
Languages", RFC 2277, January 1998.
[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Structure of Management Information Version 2 (SMIv2)",
STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Textual Conventions for SMIv2", STD 58, RFC 2579, April
1999.
McDonald Informational [Page 11]RFC 3808 IANA Charset MIB June 2004
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Conformance Statements for SMIv2", STD 58, RFC 2580,
April 1999.
[RFC2978] Freed, N. and J. Postel, "IANA Charset Registration
Procedures", BCP 19, RFC 2978, October 2000.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing SNMP Network Management
Frameworks", STD 62, RFC 3411, December 2002.
[RFC3629] Yergeau, F., "UTF-8, a transformation format of ISO
10646", RFC 3629, November 2003.
9.2. Informative References
[CHARGEN] IANA Charset MIB Generation Utility (archived at):
ftp://www.pwg.org/pub/pwg/pmp/tools/ianachar.c
[CHARMIB] IANA Charset MIB (in the future, to be archived at):
http://www.iana.org/assignments/ianacharset-mib
[CHARSET] IANA Charset Registry (archived at):
http://www.iana.org/assignments/character-sets
[CHARTEMP] IANA Charset MIB template file (archived at):
ftp://www.pwg.org/pub/pwg/pmp/tools/ianachar.dat
[RFC1759] Smith, R., Wright, F., Hastings, T., Zilles, S., and J.
Gyllenskog. "Printer MIB", RFC 1759, March 1995.
[RFC3805] Bergman, R., Lewis, H., and I. McDonald, "Printer MIB
v2", RFC 3805, June 2004.
[RFC3410] Case, J., Mundy, P., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for
Internet-Standard Network Management Framework", RFC
3410, December 2002.
McDonald Informational [Page 12]RFC 3808 IANA Charset MIB June 2004
10. Authors' Addresses
Ira McDonald
High North Inc
221 Ridge Ave
Grand Marais, MI 49839
USA
Phone: +1 906 494 2434
EMail: imcdonald@sharplabs.com
Internet Assigned Numbers Authority (IANA)
ICANN
4676 Admiralty Way, Suite 330
Marina del Rey, CA 90292
USA
Phone: +1 310 823 9358
EMail: iana@iana.org
Note: Questions and comments on this IANA Charset MIB [CHARMIB]
should be sent to the editor (imcdonald@sharplabs.com) and IANA
(iana@iana.org) with a copy to the IETF Charsets mailing list
(ietf-charset@iana.org).
McDonald Informational [Page 13]
RFC 3808 IANA Charset MIB June 2004
11. 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 THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Intellectual Property
The IETF takes no position regarding the validity or scope of any
Intellectual Property Rights or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; nor does it represent that it has
made any independent effort to identify any such rights. Information
on the procedures with respect to rights in RFC documents can be
found in BCP 78 and BCP 79.
Copies of IPR disclosures made to the IETF Secretariat and any
assurances of licenses to be made available, or the result of an
attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at
http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at ietf-
ipr@ietf.org.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
McDonald Informational [Page 14]
