1. Introduction to Common Name Service System(CNSS)
Yanfeng wang
CNNIC

2. Outline
Forewords
Common name service system
Future

3. Foreword
Running test-bed since Aug. 04, 2001
Function update twice

4. CNNIC’s Common Name Service System (CNSS)

5. CNSS Function & definition Architecture Components CNSS resolving flow
Client
Response server
Common-name DB
CNSS resolving flow
Features

6. Function & definition Function : Definition:
Resolve the common name to URL.
The result is none or unique.
Definition:
Common name can contain letter,digital,hyphen,Chinese characters,etc.
Full width and half width characters are equivalent

7. Architecture of CNSS Cns response server Client CN DB httpd
app. server
Client

8. Client No change to original function of browser
Users can customize its feature(on/off,cache…)
No change to user’s habits
Support both common name and Chinese domain name.

9. Response server Includes httpd and application server
Several response servers make up a server cluster (fault-tolerance ,high availability,high performance…)

10. CN Database Common names are stored in standard forms
DB server and response server comm. By std. protocol
Extensibility

11. CNSS resolving flow CN DB IDN CNSS httpd CN DNS CN resp. server
Search Engines
N/Y
CNSS httpd

12. Some features More convenient than URL for users to surf Internet
Support both common name and Chinese Domain Name
Communication protocol conform to standard protocol …

13. Future of Common Names

14. Future of common name
participate in discussion and communication of the keyword/common-name tech .

15. Thanks