Re: [idn] An ignorant question about TC<-> SC

["xiang deng" <deng@cnnic.net.cn>]

On Monday, October 29, 2001 7:19 PM,James Seng/Personal wrote:
 
> Could you explain why "registration solution isn't a solution"?
> Not every one of us knows why...(so please dont say "we all know...")

1.Adopting multiple records solution - analysis
If a multiple records solution are adopted, and all possible 
TC/SC forms of a single Chinese domain name are added into a 
zone file as the different forms of one identical domain name, 
then this approach has the following weakness:
(1)2^n problem. To ensure a Chinese domain name both TC/SC to 
be correctly resolved, 2^n records must be registered and all 
the records point to one IP address (Note: n indicates the total 
number of the TC/SC variants of the domain name). Chinese has 
over 4,000 variants, and most of them are in common use, a single 
ordinary domain name may have dozens of, hundreds of even thousands 
of TC/SC records, if all of them are to be registered, then total 
number of registrations will explode. In order to protect their 
domain name, users must register 2^n domain names, registration 
cost will increase rapidly, and this is obviously not practical.

(2)The lower level delegation domain name servers may adopt a 
different domain administrative policy or they simply don't support 
multiple records registration, therefore the consistency of TC/SC 
domain names cannot be ensured.

(3)How to ensure that the 2^n records are to be owned by a single 
registered user? This is also an inevitable question, if this cannot 
be ensured, there are will be a large number of domain name 
disputationes. Different registration authorities has different 
registration policies, even if the registration policies can prevent
gTLD and ccTLD practice; they don't have control over secondary or 
tertiary domain.

2.Adopting TC only records and SC only records solution - analysis
TC only records and SC only records solution has the following weakness:
(1)Not applicable to Hong Kong and Macao where both TC and SC are used, 
simplified Chinese is not used at all in Taiwan, TC only or SC only 
records cannot meet the requirements of the users.

(2)This approach cannot solve technically delegation domain problems either.

(3) How to ensure that the two kinds of records are to be owned by a 
single registered user? This is also an inevitable question, if this 
cannot be ensured, there are will be a large number of domain name 
disputationes. Different registration authorities has different 
registration policies, even if the registration policies can prevent 
gTLD and ccTLD practice; they don't have control over secondary or 
tertiary domain.

Please don't say what I say include policy issues, which havn't 
relationship with IETF, because you advise that this is a solution, 
but meanwhile, you don't take care of relevant policy issues 
caused by the solution.

Deng xiang