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

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 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 ）.

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 Mission Edit Traditional Chinese Variant Table and coordinate Simplified Chinese Variant Table with CNNIC for CDN

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, 8 th CDNC meeting in Yokohama Joint development for CDN client software Modification on algorithm of IDN Admin. guideline draft Consider to make Chinese variant table

Oct. 2002, 9 th CDNC meeting in shanghai Discussion on Chinese character variant tables Plan to merge CN/TW tables into one table in Dec Development of client and its supporting system Suggestions on options of the algorithm of guideline draft Feb. 2003, 10 th CDNC meeting in Taipei Merge CN/TW tables CDN demonstration system to get user experience for draft table usage 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 announce/Current/msg18308.html announce/Current/msg18308.html announce/Current/msg20812.html announce/Current/msg20812.html Major Activities on IDN/CDN

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 Status of Chinese Variant Table

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

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

TW variant Table Working Group The 16 th 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

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

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

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

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

Sample of CVT Character for registration (CR) TW Corresponding character (TWCC) CN Corresponding character (CNCC) Relevant character(s) (RC) Remarks 公公公公 Mapping to oneself 司司司司 會會会會会 1-n mapping Only CR CC 2 RC Consistent RCs 会會会會会 議議议議议 议議议

Sample of TCVT Character for registration (CR) TW Corresponding character (TWCC) CN Corresponding character (CNCC) Relevant character(s) (RC) Remarks 風風风風风凨 1-1 mapping Consistent RCs 风風风風风凨 凨風风 台台臺颱檯台 1-n mapping Inconsistent RCs 臺台臺台 颱颱台台颱 檯檯台台檯

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: to many: 11

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

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

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

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

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

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 1. 會议公司.TW 2. 会議公司.TW Zone file 2 CDN 1. 會議公司.TW 2. 会议公司.TW

Demonstration( 會議公司.TW) RC DN 1. 會议公司.TW 2. 会議公司.TW RC DN could be active by registrant 1. 會议公司.TW Zone file 3 CDN 1. 會議公司.TW 2. 会议公司.TW 3. 會议公司.TW

Demonstration( 颱風.TW) Register CDN: 颱風.TW TWCC DN: 颱風.TW CNCC DN: 台风.TW RC DN 1. 台凨.TW 2. 台風.TW 3. 颱凨.TW 4. 颱风.TW Zone file: 2 CDN 1. 颱風.TW 2. 台风.TW

Demonstration( 台風.TW ) Register CDN: 台風.TW There are 4 TWCC DN 1. 檯風.TW 2. 臺風.TW 3. 颱風.TW 4. 台風.TW  Option process: Let user to choose one TWCC DN  TWCC DN: 台風.TW

Demonstration( 台風.TW ) CNCC DN: 台风.TW RC DN 1. 台凨.TW 2. 檯凨.TW 3. 檯風.TW 4. 檯风.TW 5. 臺凨.TW Zone file 2 CDN 1. 台風.TW 2. 台风.TW 6. 臺風.TW 7. 臺风.TW 8. 颱風.TW 9. 颱凨.TW 10. 颱风.TW

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 1. 台凨.TW 2. 台風.TW 3. 颱凨.TW 4. 颱风.TW

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

Case study:.tw CDN Statistics with CVT

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

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

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

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,  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

Q & A