数据中心网络架构和设计指南

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1、数据中心网络架构和设计指南目录数据中心网络架构•ServerFarmArchitectureOverview•DesignRequirementsintheServerFarm•AccessLayerDesignModels•DensityandScalabilityImplications•ScalingB/WwithGigabitEtherChannel®and10GE•SpanningTreeDesignandScalability•HighAvailabilityintheDC•Summary数据中心服务器群交换架构DC-

2、2101定义数据中心接入层2层,3层服务器和主机连接•L2andL3requirementsEnterpriseCore•Dualandsingleattached•Highperformance,DCCorelowlatencyL2switching•Mixofover-subscriptionDCAggregationrequirements•Manyuplinkoptions•STPprocessingforconfiguredVLANsonly•UtilizesservicesintheaggregationlayerL2

3、w/ClusteringandNICTeamingBladeChassisw/PassThruBladeChassisw/IntegratedSwitchMainframew/OSAL3AccessDCAccess定义数据中心汇聚层提供共享的应用/安全服务•AggregatesaccessEnterpriseCoreuplinksintoDCcore•LargeSTPprocessingload•ProvidesadvancedapplicationandsecurityfunctionsviaservicemodulesServ

4、iceModules•Maintainssessionstateandconnectiontablesforredundancy•Whataretheseservices?L2w/ClusteringandNICTeamingBladeChassisw/PassThruBladeChassisw/IntegratedSwitchMainframew/OSAL3AccessDCAccess定义数据中心汇聚层集成服务Layer4–7Services:FW,SLB,SSL,IDS•Applicationandsecurityservic

5、escanbedeployedas:AppliancesServiceblades•Servicebladessuchasfirewallbladesandloadbalancingblades…providehardware-basedstatefulfunctions•Integratedbladesoptimizerackspace,cablingandconfigurationmgmt•Providehighestflexibilityandeconomiesofscale定义数据中心汇聚层服务器之间的通信路径WhatTy

6、pesofServertoServerTrafficWillExist?Multi-TierInteraction,Backup,Replication,ClusterMessaging,StorageoverIPDCCoreAggregationAccess•Theaggregationmodulemayprovidetheprimarycommunicationpathforservertoservertraffic•Nontraditionaltrafficemerging•Drivingloweroversubscript

7、ionand10GEuplinks•ServersnowshipwithPCI-XNIC’sandGE•Planbandwidthforfutureservertruecapacity•••••定义数据中心核心层汇聚层之间的高速交换矩阵EnterpriseCoreDCCoreAggModule1GE/10GENx100ServersAggregationAccessAggModule2GE/10GENx100ServersInterconnectsAGGmodulesIsolatesfailuredomainsScaleslarg

8、eSTPdiametersImproves10GEscalingPlanandbuildDCcoreupfrontEthernetInfinibandFC定义数据中心服务器交换矩阵服务器间流量的高速交换•PurposebuiltserverStor