企业网络架构计算机网络与因特网双语小区论文.docx

企业网络架构计算机网络与因特网双语小区论文.docx

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企业网络架构计算机网络与因特网双语小区论文

Abstract

Accordancewiththe"economicalandpractical,modestadvance"withtheprinciplesoftoday'spopularnetworktechnology,aftermanyargumentsandcomparison,useofthemostpromisingbasisforIntranettechnologyasanetwork,takingaccountoftheremotedial-upnetworkingandbusinessaffiliates.

Keywords

InternetLANServersWWWFTP

Preface

Theeasiestonthecomputernetworkisdefinedas:

numberofcrossconnections,toshareresourcesforthepurpose,acollectionofautonomouscomputers

Themostsimplecomputernetworkisonlytwocomputersandconnectthemtoalink,thatis,twonodesandalink.Becausethereisnothirdcomputer,sothereisnoexchangeoftheissues.

ThelargestcomputernetworkistheInternet.Itconsistsofalotofinterconnectedcomputernetworksformedthroughmanyrouters.Therefore,theInternet,alsoknownas"networkofnetworks."

Inaddition,fromtheperspectiveofnetworkmedia,computernetworkcanbeseenbymorethanonecomputerequipmentandsoftwarethroughaspecificlink,anewmedia.

InternetanditsEnglishword"Internet"ahomonym,alsoknownas"Internet."InthedevelopmentofInternetapplicationsthattoday,itisoureverydaydealingswithanetwork,intermsofgeographicalscope,orfromthenetworksizearethelargestintermsofanetworkitisthatweoftensay"Web","WWW"and"WorldWideWeb"andsoitiscalled.Fromthegeographicalscope,itcanbeaglobalcomputer'sInternet,thisnetworkischaracterizedbythegreatestuncertainty,theentirenetworkofcomputersallthetimeaspeopleaccessthesamenetworkchanges.WhenyouconnectedwhenontheInternet,yourcomputercanberegardedaspartoftheInternet,butoncetheconnectionwhenyoudisconnectfromtheInternet,yourcomputerdoesnotbelongtotheInternet.Butitsstrengthisalsoveryclearisthatlargeamountofinformation,communicationwide,regardlessofwhereyouare,aslongasyoucanontheInternetlinkedtoanyInternetuserscansendyourlettersandadvertising.

Text

Designtask

Toanenterpriseforbuildingobject,accordingtocorporatestatus,setupanetworkofcompanies,writethenetworkdesign.

Requirements:

1,uponrequest,thefeasibilityofbuildinganetworkofcompanies,mainlyfromtheeconomyandtheneedforanalysisandsubmitafeasibilityanalysisreport;

2,comparisonofchoicetowritetheprogram（basedonnetworktopology）;

3,drawthenetworktopology;

5,accordingtothechoiceofnetworkequipmentconditionstodeterminetheconfigurationofvarioushardwareandsoftware;

6,buildweb,FTP,mailrelatedtotheserver.

7,thecompanyhasfiveoffices,eachofficebuildingwithfiveeachfromthe1Km,eachwith100computerstoconnecttotheInternet.

8,thetwocompaniesthroughwideareanetworktoconnecttotheISP

ProgramMasterPlan

Accordancewiththe"economicalandpractical,modestadvance"withtheprinciplesoftoday'spopularnetworktechnology,aftermanyargumentsandcomparison,useofthemostpromisingbasisforIntranettechnologyasanetwork,takingaccountoftheremotedial-upnetworkingandbusinessaffiliates.

Themajorareasincludethedesigngroupwithinthenetworkserversystems,networksystems,wideareanetworkremoteaccesssystems,networkmanagementsystems,databackupsystems.Intranetbasedserverclustersystemdesignstructure,mainlywithinthenetworkWEBserver/fileserver,databaseserver,mailserver.Thethirdnetworkdevicelayerswitchingwithadvancedtechnology,GigabitEthernetbackbonestructureselectedusingthe100Mswaptothedesktop.Networkequipmentincludescentralswitches,workgroupswitches,remoteaccessrouters,accessrouters,firewalls,encryptiondevicesandothercomponents.Outsidethenetworktosetupaproxyserveratthesametimeasthedomainmanagement,usingthe128KlineaccesstoInternet,takingintoaccounttheactualoperationandinvestmentprotection,externalnetwork10Mtothedesktop,usingtheexistingnetworkequipment,properconductoftheadditionsandadjustmentstomeettheapplicationrequirements.

Networktopology

Serverclustersystemconstruction

ServergroupstructureofthesystemdesignisbasedonIntranet,IntranetistheuseofInternettechnologytobuildupinternalinformationnetwork.Itcontainsthesecondfloorofmeanings:

First,withintheenterpriseIntranetisacomputerinformationnetwork;Second,inheritedanddevelopedtheIntranetofmanyInternettechnologies,includingWWW,e-mail,databaseandnetworkoperatingsystemsandothertechnologies

Designserverfarms

Withthedevelopmentofnetworktechnology,thechoiceoflessexpensiveserverfarmscanbeusedtoprovidetheoriginalofagroupofserversthatonlyexpensiveminicomputersormedium-sizedmachinecanprovidethefunctionalityandperformance,andbecausetheservicesareloadedintomultipleserversthroughthenetworkservicestoprovidevariousservicestoavarietyofserverfarmconnectivityasawhole,anincreaseoftheoverallsystemreliability.Atthesametimethisarchitecturehasthefollowingadvantages:

1〕useofworkstation-classservertocompletetheoriginalmachineonlythroughthemedium-sizedminicomputer,orcanprovidethefunctionalityandperformance;

2〕serverclusterstoimprovetheflexibilityofthesystem;

3〕serverclusterssetbythenecessarybackuptaskstoeachother,greatlyimprovingthesystemstabilityandreliability;

4〕groupwareapplicationstructureincreasesthescalabilityoftheapplicationsystem;

5〕groupwareservicedistribution,theseparationofindependentevents,andenhancethenetworkrelatedeventsarenotrelatedtocombatinterference.

Serverhardwaredesignandfunctionalclassification

IntranetWWWserver/fileserver

Afterthedistributionoftheentirenetworkdataanalysis,networktrafficconcentratedinthemainWWWserver/fileserverforthefollowingreasons:

1WWWisalocalareanetworkwithinanetworkserver,WWWpublishing,isalsoafileserver,network,informationdisseminationandnetworkmanagementforalltheworkintheWWW/fileserver;

2INTRANETstructureisbasedWWWbrowserbasedofficeautomationsystemisbasedontheWWWbrowser,thesystemwillfurtherincreasethewideapplicationWWWserverstress.

3reportandsummaryofallthedataisachievedthroughtheWWWserver,WWWserverthroughavarietyofqueryisquerythecorrespondingdata.

ThisshowsthatWWWserveristhecoreoftheentirenetwork,notonlyfastprocessingpower,butalsolarge-capacitydiskstoragespace,astrongabilitytoworkthediskfaulttoleranceandhighreliabilityofthehosttheabilitytowork.UsegraphicalinterfaceNTServer4.0pack6,byrunningDNS,IISdomainforthenetworkmanagementanddynamicIPaddressassignmentandothernetworkfunctions,andmulti-layerstructurethroughtheIntranetintheNTtoachievethemiddlelayerandservicelayerfunctionality.Servertypedesign,shouldtakeintoaccountallbrandsofquality,service,costperformanceofvariousfactors.Aftermanycomparethecompany'sserversuseHPproducts.UsingHP6000asWWWserverconfiguredasadual-XeonPIII800CPU,512Mhigh-speedcheckmemoryandharddrivewitha18.2G3,usingtheHP6000systemtoachieveinternalonboardRAIDdiskRAID5hotredundancy.Totalavailablecapacityis36G.

Domainmanagementserver

DomainmanagementserverfromtheINTRANETnetworkadministratorrole,sothesameoperationwithhighsecurityrequirements,butsmallamountofdatadomainmanagement,domainmanagementtaskswillbeaddedtotheWEBserverrunning,bothtosaveresourcesandprotectthesecurity.

Databaseserver

Relativelyindependentofthedatabaseserverisrunning,thedatabaseserverrequiresnotonlyhigh-throughputservicecapabilities,butalsotoensurereliableservicecapabilitiesandavailableproperties.Toobtainthishigh-availabilityperformance,wenotonlyuseitsownperformancewithhighavailabilityoftheHP6000asadatabaseserver,addedaHP3000servershot

standbywork.

HP6000entireinformationsystemusuallyisthemainserver,andonlyunderfaultconditions,thetaskwasonlytotakeoverbackupHP3000,HP3000usualdatabackuphost,sotheperformancerequirementsingeneral.MasterserverHP6000dual-Xeon800CPU,512MRAM,18.2Gsystemharddisk.BackupserverconfigurationPIII800CPU,128MRAM,9Gsystemharddisk.WewilluseSCSIdiskarraycabinetofthe18.2Gdrives,configurethreedrivesinRAID5modeofwork,anytimeyoucanaddapieceofthesameworkhardtomakehardworkin3+1,inwhichthreediscsettoRAID5,theotherbigpiecesetwaitingforthehotplate,oncethecompositionofthethreediskRAID5therewasafailure,thefourthblockautomaticreplacementofafaultyharddiskdrives,dataisnotlost,enhanceddatasecurity.

Mailserver

E-mailserverisrunningisrelativelyindependent,e-mailproductsuseMicrosoft'sExchangeServer5.5,networkplatformusedNT4.0,e-mailserverrunningtheExchangeserverneedstooccupyalotofmemory,thememoryisconfiguredto512M.UsedHP3000serverasane-mailserver.Harddiskcapacityof18.2G.

Firewall

Setupafirewalltoprotectenterprisenetworksecurity,sothechoiceofafirewallisessential.GenerallyuseCiscofirewallseries,herewechoseCiscoPixfirewall.

Theswitch

CoreLayerSwitch:

Model:

Catalyst6509G

FloorAccessSwitch:

Model:

Catalyst2948G

HUB

InEthernet,thehubisusedtoconnectthecomputerleadstothetwisted-pairtogether,oftenthehub8portand16two,dependingonthedesiredamountofaccesstouseamicrocomputer,andleavespaceinthefuturenetworkexpansion.

Router

ModelsusingtheCisco2611routerforremot