SAN设计及MDS系列产品JerryLiuCSE,DataCenter提纲.SAN技术概述.SAN设计原则及相关考虑因素.MDS系列SAN交换机简介.MDS面向应用的SANBRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic2SAN技术概述Presentation_ID©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic3FibreChannelsimilaritiestoTCP/IPFibreChannelTCP/IPWWNsMACaddressesFCIDsIPaddressesNameSeverdnsFabricControllerDHCPserverFSPFOSPFZoneServer/ZoningACLsVSANsVLANsFramesPacketsClass3UDPClass2andFTCPPortChannelLinkAggregation(trunking)VSANTrunkingVLANtrunkingBRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic5协议对比OSI模型以太网和TCP/IP光纤通道应用层应用层高层协议(ULP)(i.e.POP3,SMTP,DNS,表示层DHCP,FTP,WWW协议)会话层FC-4:ULPMapping传输层TCP/UDP网络层动态IP地址10.77.77.77数据链路层固定MAC地址FC-3:通用服务x‘00-00-0E-21-17-6B’FC-2:动态Native地址(8/24-bits)固定World-WideName(64-bits)FC-1:8b/10b编码物理层物理接口FC-0:物理接口BRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic6光纤通道通讯.面向点对点的通讯通过设备登录实现.N_Port到N_Port的通讯逻辑节点连接.流控制端到端的缓冲信用.带确认的对于某些类的流量，不是所有.每个设备允许多个连接NodeNodeTransmitterTransmitterN_PortN_PortReceiverReceiverLinkBRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic7Fabric名字及地址:WWN.每个光纤通道端口和节点都有一个硬件地址叫WorldWideName(WWN)由IEEE分配给设备制造商当制造的时候分配给每一个设备64or128bits.交换机名字服务器将WWN映射到FCIDWWNN可用来作为设备的唯一标识WWPN可用来作为设备上端口的唯一标识BRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic8FC_ID地址.FC_ID地址模型帮助加快路由.交换机给N_Port分配FC_ID.有些地址被保留作为fabric服务.Privateloop设备只能识别8位地址(0x0000xx).FL_Port可以提供公共地址翻译服务.交换机最大domain数=239(基于标准)8Bits8Bits8BitsSwitchTopologySwitchAreaDeviceModelDomainPrivateLoopDeviceArbitratedLoopAddressModel0000PhysicalAddress(AL_PA)ArbitratedLoopPublicLoopDeviceSwitchAreaPhysicalAddressAddressModelDomain(AL_PA)BRKSAN-2701©2010Ciscoand/oritsaffiliates.Allrightsreserved.CiscoPublic9光纤通道端口类型FibreChannelSwitchInputFabricOutputPortXPortFabricNodeNL_PortFL_PortE_PortE_PortSwitchG_PortF_PortN_PortNodeNodeNL_PortG_PortF_P