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1、OSPF;AnatomyofanInternetRoutingProtocolWrittenforTCP/IPnetworkadministrators,protocoldesigners,andnetworkapplicationdevelopers,OSPF:AnatomyofanInternetRoutingProtocolgivesthemostcompleteandpracticalviewoftheinnerworkingsofInternetrouting.OSPF(OpenShortestPathFirst)isacommonTCP/I
2、ProutingprotocolthatprovidesrobustandefficientroutingsupportinthemostdemandingInternetenvironments.AmethodicalanddetaileddescriptionoftheprotocolisofferedandOSPF'srolewithinthewidercontextofaTCP/IPnetworkisdemonstrated.Practicalthroughout,thisbookprovidesnotonlyatheoreticaldescr
3、iptionofInternetrouting,butalsoareal-worldlookattheorytranslatedintopractice.Forexample,Moydescribeshowalgorithmsareimplemented,andshowshowtheroutingprotocolsfunctioninaworkingnetworkwheretransmissionlinesandroutersroutinelybreakdown.Readerswillfindclearexplanationsofroutingfund
4、amentals,suchashowarouterforwardspackets,IPaddressing,CIDR(ClasslessInter-DomainRouting),theroutingtable,Internetroutingarchitecture,andthetwomainroutingtechnologies—DistanceVectorandlink-statealgorithms.OSPFisdiscussedindepth,withanexaminationoftherationalebehindOSPF'sdesigndec
5、isionsandhowOSPFhasevolvedtokeeppacewiththerapidlychangingInternetenvironment.Topicscoveredbythebookinclude:•OSPFareasandvirtuallinks•NBMA(Nonbroadcastmulti-access)andPoint-to-MultiPointnetworksegments•OSPFconfigurationandmanagement•Interactionwithotherroutingprotocols•OSPFcrypt
6、ographicauthentication•OSPFprotocolextensions,includingtheDemandCircuitextensionsandthemulticastextensionstoOSPF(MOSPF)IPmulticastandmulticastroutingarealsodiscussed.Methodsfordebuggingroutingproblemsareexplained,andaresupplementedwithacatalogofavailabledebuggingtools.AnOSPFFAQa
7、nswerssomeofthemostfrequentlyaskedquestionsabouttheOSPFprotocol.Thebookalsooffersside-by-sidecomparisonsofalltheunicastandmulticastroutingprotocolscurrentlyinuseintheInternet.ReaderswillgainasophisticatedunderstandingofInternetroutingandoftheOSPFprotocolinparticular.Moreover,the
8、book'spracticalfocuswillenableyoutoputthisknowl
