中國下一代互聯(lián)網(wǎng)的建設與發(fā)展

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1、中國下一代互聯(lián)網(wǎng)的建設與發(fā)展北京清華大學李星2010-11-30中國下一代互聯(lián)網(wǎng)研究情況?1998:開始CERNET-IPv6試驗床建設?1999:承擔863計劃317課題“IPv6示范系統(tǒng)”?1999:CERNET-NokiaIPv6合作項目?2000:研制國家自然基金聯(lián)合重大項目“中國高速互聯(lián)研究試驗網(wǎng)NSFCNET”?2000:發(fā)起863重大專項“中國高速信息示范網(wǎng)絡”，提出在“十五”863計劃中繼續(xù)建設高速信息示范網(wǎng)?2002:承擔863計劃重點課題“IPv6綜合試驗環(huán)境”?2002:承擔“下一代互聯(lián)

2、網(wǎng)中日IPv6-CJ合作項目”?2003:國家計委“中國下一代互聯(lián)網(wǎng)發(fā)展戰(zhàn)略研究”?2003：承擔CNGI最大的核心網(wǎng)建設：CERNET223Over10yearseffortsonIPv6SAVIDual-Stack?IETFWGNFSCNET?IETFRFC5210TunnelTunnelIPv6overIPv4IPv4overIPv6TranslationCERNET-6BoneIETFsoftwireWGIVIRFC5565Bi-directionStatelessTranslationIPv6onl

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

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

5、ItprovidesIPv4/IPv6unicastandmulticastservicestotheeducationandresearchcommunity,butvery,veryfewIPv6traffic.10CNGI主干網(wǎng)11國際互聯(lián)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