Joint Engineering Team (JET) Guidelines for Internationalized Domain Names (IDN) Registration and Administration for Chinese, Japanese, and Korean
RFC 3743
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RFC - Informational
(April 2004; No errata)
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2013-03-02
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ISE
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RFC 3743 (Informational)
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Harald Alvestrand
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Network Working Group K. Konishi
Request for Comments: 3743 K. Huang
Category: Informational H. Qian
Y. Ko
April 2004
Joint Engineering Team (JET) Guidelines for
Internationalized Domain Names (IDN) Registration and
Administration for Chinese, Japanese, and Korean
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.
IESG Note
The IESG congratulates the Joint Engineering Team (JET) on developing
mechanisms to enforce their desired policy. The Language Variant
Table mechanisms described here allow JET to enforce language-based
character variant preferences, and they set an example for those who
might want to use variant tables for their own policy enforcement.
The IESG encourages those following this example to take JET's
diligence as an example, as well as its technical work. To follow
their example, registration authorities may need to articulate
policy, develop appropriate procedures and mechanisms for
enforcement, and document the relationship between the two. JET's
LVT mechanism should be adaptable to different policies, and can be
considered during that development process.
The IETF does not, of course, dictate policy or require the use of
any particular mechanisms for the implementation of these policies,
as these are matters of sovereignty and contract.
Abstract
Achieving internationalized access to domain names raises many
complex issues. These are associated not only with basic protocol
design, such as how names are represented on the network, compared,
and converted to appropriate forms, but also with issues and options
for deployment, transition, registration, and administration.
Konishi, et al. Informational [Page 1]
RFC 3743 JET Guidelines for IDN April 2004
The IETF Standards for Internationalized Domain Names, known as
"IDNA", focuses on access to domain names in a range of scripts that
is broader in scope than the original ASCII. The development process
made it clear that use of characters with similar appearances and/or
interpretations created potential for confusion, as well as
difficulties in deployment and transition. The conclusion was that,
while those issues were important, they could best be addressed
administratively rather than through restrictions embedded in the
protocols. This document defines a set of guidelines for applying
restrictions of that type for Chinese, Japanese and Korean (CJK)
scripts and the zones that use them and, perhaps, the beginning of a
framework for thinking about other zones, languages, and scripts.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Definitions, Context, and Notation . . . . . . . . . . . . . . 5
2.1. Definitions and Context. . . . . . . . . . . . . . . . . 5
2.2. Notation for Ideographs and Other Non-ASCII CJK
Characters . . . . . . . . . . . . . . . . . . . . . . . 9
3. Scope of the Administrative Guidelines . . . . . . . . . . . . 9
3.1. Principles Underlying These Guidelines . . . . . . . . . 10
3.2. Registration of IDL. . . . . . . . . . . . . . . . . . . 13
3.2.1. Using the Language Variant Table . . . . . . . . 13
3.2.2. IDL Package. . . . . . . . . . . . . . . . . . . 14
3.2.3. Procedure for Registering IDLs . . . . . . . . . 14
3.3. Deletion and Transfer of IDL and IDL Package . . . . . . 19
3.4. Activation and Deactivation of IDL Variants . . . . . . 19
3.4.1. Activation Algorithm . . . . . . . . . . . . . . 19
3.4.2. Deactivation Algorithm . . . . . . . . . . . . . 20
3.5. Managing Changes in Language Associations. . . . . . . . 21
3.6. Managing Changes to Language Variant Tables. . . . . . . 21
4. Examples of Guideline Use in Zones . . . . . . . . . . . . . . 21
5. Syntax Description for the Language Variant Table. . . . . . . 25
5.1. ABNF Syntax. . . . . . . . . . . . . . . . . . . . . . . 25
5.2. Comments and Explanation of Syntax . . . . . . . . . . . 25
6. Security Considerations. . . . . . . . . . . . . . . . . . . . 27
7. Index to Terminology . . . . . . . . . . . . . . . . . . . . . 27
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