The computer network management technology

Thecomputernetworkmanagementtechnology[Abstract]Alongwiththescaleexpansionandincreaseofthecomputernetwork,thenetworkmanagementismoreandmoreimportantinthecomputernetworksystemstatus.Thisarticlefirstintroducedcomputernetworkmanagementagreementinthesimple,thenintroducedcommontwokindsofnetworkmanagementpatternatpresent.[Keywords]：computernetworkmanagementWEB1.Networkmanagementtechnologyoverview1)NetworkmanagementtechnologyofthestatusNetworkmanagementthissubjectfieldsincethenineteeneightiesreceivingincreasingattention,manyinternationalorganizationforstandardization,BBSandresearchinstitutionsaresuccessivelydevelopedallkindsofstandard,protocoltoguidenetworkmanagementanddesign,butvariousnetworksysteminstructureexistorbigorsmalldifferences,sofarnooneisacceptabletoallofthestandard.Current,networkmanagementtechnologybasicallyhasthefollowingthree:borninInterntefamilySNMPisusedexclusivelytoInternetmanagement,althoughithassimpleapplicablecharacteristicshascurrentlybecomeworld-famouspracticalstandard,butduetotheInternetitselfdevelopmentnotnormative,maketheSNMPhavecongenitalinadequacy,hardforcomplexnetworkmanagement,andappliesonlytoTCP/IPnetworks,intermsofsecurityalsodeficient.ExistingSNMPv1andSNMPv2twoversions,whichSNMPv2mainlyintermsofsecuritysupplemented.Withthenewnetworktechnologyandsystemresearchandappear,telecommunication,wired,broadbandnetworks,etc,thefusionoftheoriginalSNMPalreadycannotsatisfythenewnetworktechnologyrequirements;ForacompleteCMIPcanprovidecomprehensivesupportnetworkmanagementschemeintechnologyandstandardsinmoremature.Thebiggestadvantageisthatnotonlythevariablesinagreementwithterminalrelatedsomeinformation,andcanbeusedtocompletecertaintasks,butjustbecauseitisaimedatSNMPlackofdesign,sotoocomplex,theimplementationofhighcost,stillnotwidelyaccepted,DistributedobjectnetworkmanagementtechnologyisaCORBAtechnology'sapplicationinthenetworkmanagementandofgeneration,mainlyadoptsdistributedobjecttechnologywillallmanagementapplicationandtheelementsasdistributionobject,thesedistributionobjectofinteractionbetweenconstitutesthenetworkmanagement.Thismethodisthebiggestcharacteristicisblockedprogramminglanguages,networkprotocolandoperatingsystemdifferences,offersavarietyoftransparency,sowideadaptability,developmenteasyandbroadprospectofapplication.SNMPandCMIPthesetwoagreementduetohavetheirrespectivesupporters,resultinginalongperiodwillnotappearsubstitutemutually,andifbycompletelyCORBA'ssystemtoreplace,bythetimeneeded,capitalandhumanresourcesaretoobig,alsoisnotacceptable.So,CORBA,SNMP,combinedwithCMIPbecomeCORBA'snetworkmanagementsystemisthemaindirectionofcurrentresearch.2)NetworkmanagementprotocolNetworkmanagementprotocoliscommonlyusedhierarchyagreement,itdefinesanetworkmanagementinformationcategoriesandcorrespondingexactformat,andprovidesthenetworkdataandnetworkmanagementofcommunicationbetweenthenodesofstandardorrules.Networkmanagementsystemisusuallymanagers(Manager)andAgent(Agent)composition,managersfromeachagencythereacquisitionmanagementinformation,processed,andthusprovidecorrespondingnetworkmanagementfunction,achievethepurposeofactingformanagement.NamelybetweenmanagersandagentRutousenetworkrealizationmanagementinformationexchange,toaccomplishthevariousmanagementfunction,exchangemanagementinformationmustfollowunifiedcommunicationsprotocols,wecallthiscommunicationprotocolsfornetworkmanagementprotocol.Atpresenttherearetwomajornetworkprotocol,fromanIETFbroughtoutsimplenetworkmanagementprotocolSNMP,whichisbasedonTCP/IPandtheInternet.BecausetheTCP/IPprotocoliscurrentnetworkinterconnectionofindustrialstandard,getthesupportofnumerousmanufacturers,thereforeSNMPisaisalreadythecaseofnetworkmanagementstandardagreement.ThemaincharacteristicoftheSNMPpollingmonitoringisadoptedbycertaintimeinterval,managerstoagentsrequestmanagementinformation,accordingtomanagementinformationtodecidewhetheritisabnormalevents.Pollingmonitoringmainadvantageistoagentforarenothigh,Defectisinwansituations,pollingbringsnotonlylargecommunicationoverhead,andtheresultsobtainedbyinterrupt-drivenunabletoreflectthelateststate.AnotherdefinitionofpublicadministrationisISOCMIPinformationprotocol.BasedonthesevenlayersoftheOSICMIPasbasis,protocolstackitopensystemsinterconnectionenvironmentofallnetworkresourcesformonitoringandcontrol,isconsideredtobethefutureofnetworkmanagementstandardagreement.CMIPcharacteristicisadoptedtoentrustmonitoringnetworkmonitor,whenmanagersneedtosendamonitoringrequestagent,agentwillautomaticallysurveillancedesignatedmanagementobject,andjustunderabnormaleventssuchastheequipment,linefault)happenswhentheygivemanagersissuedalarm,butalsoaperiodofrelativelycompletefailurereport,includingfaultphenomena,breakdownreason.Themainadvantageisentrustedmonitoringnetworkmanagementcommunicationoverheadsmall,reactiontimely,defectisactingforthesoftwareandhardwareresourcerequirementishigh,anddemandedtobetubewebsitedevelopmentmanycorrespondingagents,soshorttermisnotwidelysupport.3).NetworkmanagementsystemcompositionNetworkmanagementdemandofnetworkmanagementsys