CCIE Network Design英文学习材料

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1、AboutThisManualDocumentObjectivesThispublicationprovidesinternetworkingdesignandimplementationinformationandhelpsyouidentifyandimplementpracticalinternetworkingstrategiesthatarebothflexibleandscalable.ThispublicationwasdevelopedtoassistprofessionalspreparingforCiscoCertifiedIntern

2、etworkExpert(CCIE)candidacy,thoughitisavaluableresourceforallinternetworkingprofessionals.ItisdesignedforuseinconjunctionwithotherCiscomanualsorasastandalonereference.YoumayfindithelpfultorefertotheCiscoCCIEFundamentals:CaseStudies,whichprovidescasestudiesandexamplesofthenetworkd

3、esignstrategiesdescribedinthisbook.AudienceThispublicationisintendedtosupportthenetworkadministratorwhodesignsandimplementsrouter-orswitched-basedinternetworks.Readerswillbetterunderstandthematerialinthispublicationiftheyarefamiliarwithnetworkingterminology.TheCiscoInternetworki

4、ngTermsandAcronymspublicationisausefulreferenceforthosewithminimalknowledgeofnetworkingterms.DocumentOrganizationThismanualcontainsthreeparts,whicharedescribedbelow:PartI,“Overview,”providesanintroductiontothetypeofinternetworkingdesigntopicsthatwillbediscussedinthispublication.

5、PartII,“DesignConcepts,”providesdetailedinformationabouteachofthedesignstrategiesandtechnologiescontainedinthispublication.PartIII,“Appedixes,”containsreferencematerial.DocumentConventionsInthispublication,thefollowingconventionsareused:•Commandsandkeywordsareinboldface.•New,imp

6、ortanttermsareitalicizedwhenaccompaniedbyadefinitionordiscussionoftheterm.•Protocolnamesareitalicizedattheirfirstuseineachchapter.AboutThisManualxixDocumentConventionsNoteMeansreadertakenote.Notescontainhelpfulsuggestionsorreferencestomaterialsnotcontainedinthismanual.xxCiscoCCIEF

7、undamentals:NetworkDesignCHAPTER1IntroductionInternetworking—thecommunicationbetweentwoormorenetworks—encompasseseveryaspectofconnectingcomputerstogether.Internetworkshavegrowntosupportvastlydisparateend-systemcommunicationrequirements.Aninternetworkrequiresmanyprotocolsandfeatu

8、restopermitscalabilityandmanageabilitywithoutco