Introduction to Common Name Service SystemCNSS Yanfeng wang

Introduction to Common Name Service System(CNSS) Yanfeng wang CNNIC 2001. 10. 20

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

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

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

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.

Thanks cdngroup@cnnic. net. cn