1. Yanfeng wang CNNIC 2001.10.20 Introduction to Common Name Service System(CNSS)

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 –Client –Response server –Common-name DB CNSS resolving flow Features

6. Function & definition Function : –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. Cns response server Architecture of CNSS CN DB httpdapp. server Client

8. 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 DNS CNSS httpd CN resp. server IDN CN DB www.china.com CNSS httpd http:// www.china.com N/Y Search Engines

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 cdngroup@cnnic.net.cn