数据中心设计ppt课件.ppt

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1、Apr.2009数据中心的Nexus设计方案Agenda新型数据中心的架构设计Nexus产品系列特性在数据中心架构设计中的应用灵活的布线和机架组合：虚拟接入交换机可扩展的L2、L3网络架构VPC的应用VDC的应用和虚拟机、存储的整合其它(Netflow、CTS/SGT…)总结3-TierDataCenterDesign(传统架构)核心层:ModularChassisHigh10GEDensityLowOversubscriptionLayer3LinkstoAggregationHand-offtoCampus汇聚层:ModularChassisHi

2、gh10GEDensityLayer2TrunkstoAccessDefaultGatewayforServersTypicallyAttachesServices接入层:TopofRack(ToR)BladeSwitchesasAccessLayerEnd/MiddleofRow(EoR/MoR)GEor10GEtoServersLayer2Switching从大->中->小的网络设计认为核心的设备连接最高带宽的链路，……“收敛比”逐级分配如何应对小收敛比的需求……L2域的问题(从BladeSwitch->接入SW->汇聚…)STPvsL2MP

3、的需求，VLAN的数量和管理……可扩展性过多的层次……管理节点的数量ToR的情况尤其突出vsMoR/EoR的布线灵活的L2分区跨L3骨干的L2连接:容灾、虚拟化的机房部署……新型数据中心网络架构典型拓扑汇聚层EnterpriseNetworkDataCenterServerFarm接入层核心层网络服务核心层:ModularChassisHigh10GEDensityLowOversubscriptionLayer3LinkstoAggregationHand-offtoCampus汇聚层:ModularChassisHigh10GEDensityL

4、ayer2TrunkstoAccessDefaultGatewayforServersTypicallyAttachesServices接入层:TopofRack(ToR)BladeSwitchesasAccessLayerEnd/MiddleofRow(EoR/MoR)GEor10GEtoServersLayer2Switching采用Nexus7000和服务交换机架构数据中心拓扑PhysicalTopology-ServicesChassisandAppliancesAggregationEnterpriseNetworkDataCenterSe

5、rverFarmAccessCoreServices6500ServicesChassisdual-homedintoAggregationLayer.DedicatedServicesChassislinktocarryFaultTolerancetrafficonly.ACEModuleandFWSMinServicesChassis.ASA-5580ApplianceswithInsideandOutsidefirewallinterfacesterminatedintoAggregationLayer.EachASAassociatedwit

6、honlyoneAggregationLayerswitch.ASAFaultTolerancetrafficlinksthroughAggregationswitches.Asmalldedicatedexternalswitchisalsoanoption.物理基础设施与网络拓扑网络设备和分区ServerRackNetworkRackZoneDCPodStorageRackCOLDAISLEHOTAISLEEoRAccessPODEoRBladePODToR/N2kRackPODPODPOD4PODsToRPODMixedRowsBladeRac

7、kPODRow1Row2RowRow接入层网络模型EndofRow,TopofRack&BladeSwitchesEndofRowTopofRackBladeSwitchesRow1Row2EndofRoww/BladeEnclosuresToRw/BladeEnclosuresGEAccessRowRow1Row2EndofRoww/N2kToRw/FEXRow1Row2Whatitusedtobe…Whatelseiscoming…Whatinfluencesthephysicallayout…Primarily:PowerCoolingCabl

8、ingSecondarilyAccessModelPortDensityEoRN2kIn-RackCabli