计算机网络管理-ICANN.PPTVIP

The Need for IPv6 in China Jianping Wu，Director of CERNET Jilong Wang 2002-10-28 Content Requirements for IPv6 In China Service Providers’ Vision about IPv6 RD Efforts China Internet Estimation Population in mainland China 1,200,000,000 1 IP per person 72 class A IP addresses 1 hour on line (28.8kbps) per person per day 1.68T/s 1 MB homepage per person 1200TB Internet User trends Telephone user trends in China APNIC IPv4 Address Distribution Requirements for IPv6 Scalability Challenges Size（Address Space） Performance（Routing） Manageability Challenges Security QoS Mobility Application Promotions Special Opportunities for IPv6 in China Development of Broadband Education Application Relative Small IPv4 Coverage（some easy to change or adapt new） Encouragement From Government Olympics 2008 Different Voice How many IPv4 addresses can China get？ Will IPv4 NAT work for China? Should China implement IPv6? Who pay for IPv6 transition? Will China benefit from new features of IPv6 ? What are the killer applications of IPv6 ？ Service Providers China Telecom CERNET（Noncommercial） China Mobile China Netcom China Unicom China Railway China Satellite CSTNET （Noncommercial） China TeleCom China MobileCom Policies Follow the development Research on business model Transition from IPv4 to IPv6 Key Tech. Terminals Test Tech Service Operation China Netcom A Large-Scale IPv4 Network Built Concerned with the benefits of IPv6 IPv4 still can manage to work How to use existing IPv4 equips Cost for Transition Maturity of IPv6 Hence and egg Problem No operational network to support app No killer app to promote Network deployment CERNET CERNET Computer Backbone GigaPops 8 MigaPops 36 City Coverage 160+ Member 1000+ End Users 10M+ CERNET IPv6 Services IP allocation by CerNIC Tunnel broker Common applications WWW DNS FTP Future Developing Native IPv6 Network Parallel Develop with IPv4 Internet Merge Transparently with IPv4 on service and application level Maybe First Success in So