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Chinese Domain Name Consortium (CDNC) Status Update for IDN

Chinese Domain Name Consortium (CDNC) Status Update for IDN. CDNC Vincent WS Chen, TWNIC 2003.03.25. CDNC Status update. CDNC Introduction Major Activities on IDN/CDN Status of Chinese Variant Table Issues Next Step. The Chinese Domain Name Consortium (CDNC). Since May, 2000

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Chinese Domain Name Consortium (CDNC) Status Update for IDN

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  1. Chinese Domain Name Consortium (CDNC) Status Update for IDN CDNC Vincent WS Chen, TWNIC 2003.03.25

  2. CDNC Status update • CDNC Introduction • Major Activities on IDN/CDN • Status of Chinese Variant Table • Issues • Next Step

  3. The Chinese Domain Name Consortium (CDNC) • Since May, 2000 • CDNC was founded by CNNIC, TWNIC, HKNIC, MONIC in Beijing. • Currently co-chairs • Prof. Hua-lin Qian (CNNIC) • Dr. Shian-shyong Tseng (TWNIC) • Members • CNNIC, TWNIC, HKNIC, MONIC • Other organizations with DN technology and knowledge, which are interested in CDN（Chinese domain name）.

  4. Other related Organizations • JET • Joint Engineer Task force for IDN effort • Members: TWNIC, CNNIC, JPNIC, KRNIC • TWNIC IDN Task force • Since May, 2000 • Mission • Study CDN technology and implementation solutions • TW Variant Table Working Group • Since Feb. 2002 • Mission • Edit Traditional Chinese Variant Table and coordinate Simplified Chinese Variant Table with CNNIC for CDN

  5. Major Activities on IDN/CDN • CDNC announcement on current IDN solution in Feb, and June 2002 • No solution for Chinese TC/SC equivalence in IETF architecture • No complementary documents for corresponding IDN registration and administration • Aug. 2002, 8th CDNC meeting in Yokohama • Joint development for CDN client software • Modification on algorithm of IDN Admin. guideline draft • Consider to make Chinese variant table

  6. Major Activities on IDN/CDN • Oct. 2002, 9th CDNC meeting in shanghai • Discussion on Chinese character variant tables • Plan to merge CN/TW tables into one table in Dec. 2002 • Development of client and its supporting system • Suggestions on options of the algorithm of guideline draft • Feb. 2003, 10th CDNC meeting in Taipei • Merge CN/TW tables • CDN demonstration system to get user experience for draft table usage

  7. Major Activities on IDN/CDN • IETF draft • Internationalized Domain Names and Unique Identifiers/Names(uname) • Traditional and Simplified Chinese Conversion(TSCONV) • Requirements of Chinese Domain Name(CDNREQ) • Phased Implementation for Internationalized Domain Names in Applications (PIIDNA) • And other drafts • IDN Admin Guideline • http://www1.ietf.org/mail-archive/ietf-announce/Current/msg18308.html • http://www1.ietf.org/mail-archive/ietf-announce/Current/msg20812.html • http://www.ietf.org/internet-drafts/draft-jseng-idn-admin-02.txt

  8. Status of Chinese Variant Table • TC/SC interchangeable is the must • Chinese variant table for CDN registration and administration • TW variant table • CN variant table • Chinese variant table (CVT) • One Table includes TW and CN variant table

  9. Why TC/SC • In 1956 and 1964, mainland China publish “A Complete Set of Simplified Chinese Characters” • It convert some Tradition Chinese to Simplified Chinese • Ex:釘  钉許  许

  10. TC/SC mapping • TC  SC : 1 to 1 mapping • TC  SC : many to 1 mapping • Ex:發  发髮  发 • TC  SC : 1 to many mapping • Ex:餘  馀餘  余

  11. TW variant Table Working Group • The 16th TWVT WG meeting has held at February 20, 2003 • Members • Linguist from Academia SINICA • Computer expert from National Central University (NCU) • Linguist from Taipei Computer Association (TCA) • Linguist from CMEX (Foundation) • Linguist from Directorate General of Budget Accounting and Statistics Executive Yuan R.O.C. (DGBAS) • Linguist from IBM Taiwan

  12. Status of TW Variant Table • Submit revised draft table to the Bureau of Standard, Taiwan • June, 2002 • October, 2002 • December, 2002 • Next revised draft table • Expected to submit in this March • After reviewed by the Bureau of Standard, Taiwan the Chinese Variant Table would become CNS standard

  13. Status of CN Variant Table • Invite linguists as the advisers to review the variant table created by TW variant Table Working Group • CN variant table 1st version has been finished in last month • Based on table of TWNIC, minor modification will be adopted • Will be completed soon

  14. CVT Structure and Definition • Character for registration (CR) • All the Chinese character code point that could be registered as CDN • TW Corresponding character • T-source Chinese character code point which correspond to CR • CN Corresponding character • G-source Chinese character code point which correspond to CR • Relevant character • All the variant code point related to CR

  15. CVT Structure and Definition • Character for registration • CJK Han character • 20902 CJK Unified Ideographs (4E00-9FA5) • 52 Characters in Extension A • LDH • RFC 1035 • Alphabet ‘a-z’ • Numeric ‘0-9’ • Symbol ‘-’ • 21017 code points will be included in this table

  16. Sample of CVT

  17. Sample of TCVT

  18. CVT Structure and Definition • TW Corresponding character • Adopt the corresponding character selected by TW • 1 to 1: 19,029 • 1 to many: 1,925 • CN Corresponding character • Adopt the corresponding character selected by CN • 1 to 1: 20943 • 1 to many: 11

  19. CVT Structure and Definition • Relevant character • All the variant code points related to Character for Registration

  20. CVT Operation algorithm • Character for registration (CR) • Let user register one CDN • Put the registered CDN in zone file • TW Corresponding character (TWCC) • If only one TWCC • Put the TWCC DN in zone file • If more than one TWCC • Let user choose one TWCC DN then put in zone file

  21. CVT Operation algorithm • CN Corresponding character (CNCC) • If only one CNCC • Put the CNCC DN in zone file • If more than one CNCC • Let user choose one CNCC DN then put in zone file • Relevant character (RC) • Reserve RC DN in registration database • If Active RC DN • Put the ARCDN in zone file

  22. CVT Operation algorithm • CDN registration package • CDN-CR (character for registration) • TWCC DN • CNCC DN • RC DN • ARC DN

  23. Demonstration(公司.TW) • Register CDN: 公司.TW • TWCC DN: 公司.TW • CNCC DN: 公司.TW • RC DN: none • Zone file only 1 CDN: 公司.TW

  24. Demonstration(會議公司.TW) • Register CDN:會議公司.TW • TWCC DN:會議公司.TW • CNCC DN:会议公司.TW • RC DN • 會议公司.TW • 会議公司.TW • Zone file 2 CDN • 會議公司.TW • 会议公司.TW

  25. Demonstration(會議公司.TW) • RC DN • 會议公司.TW • 会議公司.TW • RC DN could be active by registrant • 會议公司.TW • Zone file 3 CDN • 會議公司.TW • 会议公司.TW • 會议公司.TW

  26. Demonstration(颱風.TW) • Register CDN: 颱風.TW • TWCC DN: 颱風.TW • CNCC DN: 台风.TW • RC DN • 台凨.TW • 台風.TW • 颱凨.TW • 颱风.TW • Zone file: 2 CDN • 颱風.TW • 台风.TW

  27. Demonstration(台風.TW) • Register CDN: 台風.TW • There are 4 TWCC DN • 檯風.TW • 臺風.TW • 颱風.TW • 台風.TW • Option process: Let user to choose one TWCC DN • TWCC DN: 台風.TW

  28. Demonstration(台風.TW) • CNCC DN: 台风.TW • RC DN • 台凨.TW • 檯凨.TW • 檯風.TW • 檯风.TW • 臺凨.TW • Zone file 2 CDN • 台風.TW • 台风.TW • 臺風.TW • 臺风.TW • 颱風.TW • 颱凨.TW • 颱风.TW

  29. Corresponding DN overlap • CDN 颱風.TW and 台風.TW • Have the same CNCC DN:台风.TW • FCFS principle • The second registrant will not get the CNCC DN • 4 overlapped RC DN • 台凨.TW • 台風.TW • 颱凨.TW • 颱风.TW

  30. Relevant Character DN overlap • The result of RC DN will depending on register order • Case 1 • If register 颱風.TW first • Will get 4 RC DN • Then register 台風.TW • Will get 10-4=6 RC DN • Case 2 • If register 台風.TW first • Will get 10 RC DN • Then register 颱風.TW • Will not get RC DN

  31. Case study: .tw CDN Statistics with CVT

  32. Too many Reserved CDN • Register CDN: 經濟部標準檢驗局 • 972 RCDN • Register CDN: 經濟部標準檢驗局第一會議室 • More than 19,000 RC DN

  33. Issues • Technical issue • Reserved CDN overlap increase the registration system more complex • Package register/delete/cancel/active/de-activeneed to relay on a sophisticated registration system to maintain the correct CDN package • The amount of Zone file will increase after zone delegation

  34. Issues • Policy issue • Package register/delete/cancel/active/de-active policies, especially for overlapped characters • Too many RCs and how to regulate by registration policy to decrease the database size and system workload • Backward compatibility before or after registration, including implementing variant table • new DRP for package concept if possible • Variant table issue • Table version and its backward compatibility

  35. Next Step • To tune Chinese (CN/TW) variant table • Consider users expectation • Reduce RC size as possible • Reduce TW Corresponding character 1 to many case • 1 to many: 1,925 --988 • To set up the Rules for table use • To implement table and develop API for CDN Registration and resolution • To Work out feasible Registration policy • Adopt IDN Admin Guideline • Sunrise period

  36. Q & A

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