BS 7221-1989 开放式系统互连.网络层内部机构规范

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【英文标准名称】:Opensystemsinterconnection:specificationforinternalorganizationoftheNetworkLayer
【原文标准名称】:开放式系统互连.网络层内部机构规范
【标准号】:BS7221-1989
【标准状态】:现行
【国别】:英国
【发布日期】:1989-12-31
【实施或试行日期】:1989-12-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据处理;开放系统互连;计算机技术;网络层;数据传输;开式系统互连;计算机网络
【英文主题词】:
【摘要】:ThisInternationalStandardprovidesanarchitecturalmodeloftheOSINetworkLayerasaframeworkforOSINetworkLayerstandardization,allowingincorporationofexistingnetworkswithintheOSIarchitecture.ThisframeworkencouragesthedesignofrealsubnetworksthatfullysupporttheOSINetworkServicewhilstaccom-modatingtheparticipation,intheOSIenvironment,ofothersubnetworksthatdonotfullysupporttheOSINetworkService.ThisInternationalStandardisintendedforusebothinthedesignandapplicationofNetworkLayerprotocols,operat-ingbetweennetwork-entitieseitherinendsystemsprovid-ingtheOSINetworkService,orinintermediatesystemsprovidingtherouteingandrelayfunctions.Itshallbeusedtoa)provideacommonsetofconceptsandterminologyforuseinNetworkLayerstandards(suchstandardsshallreferencethisInternationalStandard);b)analyseNetworkLayerfunctionalityandclassifyNet-workLayerprotocols;c)specifyhow"realnetworks"shouldbeusedinsup-portingorprovidingtheOSINetworkService,inpartic-ular,incircumstanceswheremultiple"realnetworks"aretobeinterconnectedandused.TheorganizationdefinedhereindoesnotaddressNetworkLayermanagement;inparticularitisnotconcernedwiththerelationshipsamongNetworkLayerentitieswhichmayberequiredforNetworkLayermanagementpurposes.Inad-dition,thisInternationalStandarddoesnotspecifytheop-erationalrequirementsforrelayfunctionsinintermediatesystems,noraddresshowspecificcombinationsofpermit-tedfunctionsmightbepracticallyandefficientlyutilized.
【中国标准分类号】:L79
【国际标准分类号】:35_100_30
【页数】:42P;A4
【正文语种】:英语