Nexus_design_workshop(6)_FCoE

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1、DC/Nexusdesignworkshop(6)UnifiedIOandFCoEC97-541444-00©2009CiscoSystems,Inc.Allrightsreserved.CiscoPublic1FiberChannel©2009CiscoSystems,Inc.Allrightsreserved.CiscoConfidential2TheSCSII/OChannelSCSII/OChannelprovideshalf-duplexpipeforSCSIApplicationsHalf-Duplexcommand,data,andstatusFileSystemI/

2、OChannelSCSII/OchannelcanbeBlockDeviceinternalorexternaltohostSCSIGenericMultipleSCSII/OchannelscanexistwithinhostTCP/IPStackSCSINICDriverAdapterDriverAnetworkapproachcanscaletheI/OchannelinmanyareasNICAdapterSCSIAdapter(length,devices,throughput)SCSIInitiatorSCSITargetPresentation_ID©2010Ci

3、scoand/oritsaffiliates.Allrightsreserved.CiscoPublic3FibreChannelI/ONetworkingHostSystemFibreChannelprovideshighspeedtransportforSCSIpayloadviaHostBusInitiatorAdapter(HBA)SCSIFibreChannelovercomesmanyshortcomingsofParallelI/Oincluding:Addressingforupto16millionnodesFibreChannelHBALoop(shared)

4、andfabric(switched)transportHostspeedsof100to400MBps(1–4Gbps)FibreChannelSegmentsofupto10km(withoutextenders)FabricSupportformultipleprotocolsCombinesbestattributesofachannelandanetworktogetherTargetPresentation_ID©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic4FibreChannelCommunic

5、ationsPoint-to-pointorientedFacilitatedthroughdeviceloginN_Port-to-N_PortconnectionLogicalnodeconnectionpointFlowcontrolledBuffer-to-buffercreditsandend-to-endbasisAcknowledgedForcertainclassesoftraffic,noneforothersMultipleconnectionsallowedperdeviceNodeNodeTransmitterTransmitterN_PortN_P

6、ortReceiverReceiverLinkPresentation_ID©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic5FibreChannelPortTypesFibreChannelSwitchInputFabricOutputPortXPortFabricNodeNL_PortFL_PortE_PortE_PortSwitchG_PortF_PortN_PortNodeNodeNL_PortG_PortF_PortN_PortNodeNodeNL_PortG_PortF_PortN_PortNodePr

7、esentation_ID©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic6FibreChannelAddressing–Part1WorldwideNamesEachswitchelementisassignedaWWNattimeofmanufactureEachswitchportisassignedaWWNatthetimeofmanufactureDuringFLOGIt