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

Outline Forewords Common name service system Future

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

CNNIC’s Common Name Service System (CNSS)

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

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

Cns response server Architecture of CNSS CN DB httpdapp. server 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.

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

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

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

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 …

Future of Common Names

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

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