中國下一代互聯網的建設與發展

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1、中國下一代互聯網的建設與發展北京清華大學李星2010-11-30中国下一代互联网研究情况•1998:开始CERNET-IPv6试验床建设•1999:承担863计划317课题“IPv6示范系统”•1999:CERNET-NokiaIPv6合作项目•2000:研制国家自然基金联合重大项目“中国高速互联研究试验网NSFCNET”•2000:发起863重大专项“中国高速信息示范网络”，提出在“十五”863计划中继续建设高速信息示范网•2002:承担863计划重点课题“IPv6综合试验环境”•2002:承担“下一代互联

2、网中日IPv6-CJ合作项目”•2003:国家计委“中国下一代互联网发展战略研究”•2003：承担CNGI最大的核心网建设：CERNET223Over10yearseffortsonIPv6SAVIDual-Stack•IETFWGNFSCNET•IETFRFC5210TunnelTunnelIPv6overIPv4IPv4overIPv6TranslationCERNET-6BoneIETFsoftwireWGIVIRFC5565Bi-directionStatelessTranslationIPv6onl

3、yIETFBehaveWGIPv4CERNET2RFC6052CERNET•2000universities•200universities•20Msubscribers•2Msubscribers199419982001200420052006200720084CERNET(IPv4)•CERNETisthefirst(1994)nationwideInternetbackboneinChina.•CERNETranks28inglobalCIDRreport.•Over2,000universitieso

4、nCERNETwithabout20Msubscribers.5CIDRreport6Universityranking7中国对IP地址的需求Internetpenetrationcomparison8CERNET-6Bone•CERNET-6boneisthefirst(1998)IPv6networkinChina.•Pingtraffic9DualstackNSFCNET•NSFCNETisthefirst(2000)IPv4/IPv6high-speedacademicnetworkinChina.•

5、ItprovidesIPv4/IPv6unicastandmulticastservicestotheeducationandresearchcommunity,butvery,veryfewIPv6traffic.10CNGI主干网11国际互联12CERNET2(IPv6)•Builtin2004,withnationalcoverage•CERNET2isthelargestIPv6backboneinChina.•About200universitiesconnectedtoCERNET2withabo

6、ut2Msubscribers.13Beunique,bedifferent•Protocolselection–PureIPv6•Equipment–Multiplevendors•Complexity–MultipleASs•Transition–IPv4overIPv6(IETFsoftwire)–IVIstatelesstranslation(IETFbehave)•Architecture–Sourceaddressauthentication(IETFSAVI)14SoftwireIPv4over

7、IPv6•ProvideIPv4/IPv6dual-softwireSamebehaviorasadual-stackbackbonestackserviceinPE,butIPv4staticorEncapsulationeBGPpeeringandSetuprunIPv6-onlyinPIPv4accessIPv4accessislandislandroutersAFBRAFBRIPv4accessIPv4accessAFBR–IETFsoftwireWGislandIPv6TransitislandAF

8、BR•Saveoperationcost.IPv6IPv6accessaccessIPv4overIPv615SAVAandSAVI•Sourceaddressvalidationarchitecture•Sourceaddressvalidationimprovement–IETFSAVIWG16Toencouragetransition•CERNET(IPv4)–Congestedandchar