台湾宜兰大学 课程：IPv6 ch3

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1、IPv6Transition(轉移機制)Dr.Whai-EnChenAssistantProfessorAssistantProfessorInstituteofComputerScienceandInformationEngineeringNationalIlanUniversitywechen@niuedutwwechen@niu.edu.twTEL:+886-3-9357400#340http://alan.ipv6.club.twOutline¢Introduction¢DualStack¢Tunneling¢ManualConfiguration¢6to4

2、Tunnel(AutomaticTunneling)¢TunnelBroker¢Teredo(NATTraversalforIPv6Tunnel)Teredo(NATTraversalforIPv6Tunnel)¢Translation¢PortingSIPUserAgenttoIPv6PortingSIPUserAgenttoIPv6¢BIS/BIAMechanisms¢SIIT&NAT-PT2Outline¢Introduction¢Dual-stack¢Tunneling¢Translation3IPv4IPv4––toto––IIPv6TransitionS

3、trategyPv6TransitionStrategy(RFC(RFC2893)(RFC2893)¢DualStack¢ReducethecostinvestedintransitionbyrunningbothIPv4/IPv6protocolsonthesamemachine.¢Tunneling¢Reducethecostinwiringgybyre-usingcurrentIPv4routinginfrastructuresasavirtuallink.¢Translation¢AllowIPv6realmtoaccesstherichcontentsal

4、readydevelopedonIPv4applicationsDualStackNGTRANSTunnelingTranslator4TransitionMechanisms5IPv6轉移Roadmap(參考韓國發展現況)TransitionRoadmapbyGovernment(23Feb2001)TransitionRoadmapbyGovernment(23Feb2001)PhaseIPhaseIIPhaseIIIPhaseIV(~2001)(2002~2005)(2006~2010)(2011~)IPv4OnlyIPv4OceanIPv4IslandIPv

5、6OnlyIPv4/IPv6TranslationRequiredExperimentalIPv6NetworkIPv6OceanIPv6Island•ValidationCommercial•IMT2000Service•OperationIPv6ServiceCompletenativeIPv6•TranslationService•Promotion(wire/wireless)6我國IPv6位址分配現況7Outline¢Introduction¢DualDual--stackstack¢Tunneling¢Translation8DuauaSac(lStac

6、k(RFC893)C2893)Dual-stack•DualStackDualStack表示同時裝有IPv4與IPv6兩個通訊協定應用層堆疊。•當兩台機器通訊時，可以使用IPv4通訊，或是IPv6傳輸層(TCP/UDP)通訊。•當IPv6已經廣泛地被使用時，就可以移除IPv4通訊協定，而全面使用IPv6協定。IPv4IPv6網路介面層9DuauaSaclStackExapeampleApplicationsTCP/UDPRoutingprotocolsIPV4IPV6TCP/UDPDeviceDriverIPV4IPV6DeviceDriverV6V4/V6netw

7、orknetworkHostRouterV4network¢如果所有的機器都是DlSDualSttkack，還需要其他的轉換機制嗎？10Outline¢Introduction¢Dual-stack¢Tunneling¢ManualConfiguration¢6to4Tunnel(AutomaticTunneling)¢TunnelBroker¢Teredo(NATTraversalforIPv6Tunnel)Teredo(NATTraversalforIPv6Tunnel)¢Translation11Tuuesnnelsoo6fIPv6ooveerIPv4Tr