51CTO下载-2[1].描述无线网络拓扑

微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端(无线网络拓扑无线网络拓扑无线网络拓扑无线网络拓扑)---三种常用的无线网络使用方式•Wirelessclientaccess–Mobileuserconnectivity•Wirelessbridging–LAN-to-LANconnectivity•Wirelessmeshnetworking–Combinationofbridginganduserconnectivity微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端(SSID)•SSIDisusedtologicallyseparateWLANs.---SSID是用来逻辑的划分无线网络•TheSSIDmustmatchonclientandaccesspoint.---AP的SSID和客户机必须匹配•AccesspointbroadcastsoneSSIDinbeacon.---AP广播SSID•ClientcanbeconfiguredwithoutSSID.•Clientassociationsteps:---AP的客户机的关联步骤1.Clientsendsproberequest.2.Apointsendsproberesponse.3.Clientinitiatesassociation.4.Apointacceptsassociation.5.ApointaddsclientMACaddresstoassociationtable.微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端不能相同不能相同不能相同不能相同微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端服务设置模式Adhocmode•IndependentBasicServiceSet(IBSS)–Mobileclientsconnectdirectlywithoutanintermediateaccesspoint.Infrastructuremode•BasicServiceSet(BSS)–Mobileclientsuseasingleaccesspointforconnectingtoeachotherortowirednetworkresources.•ExtendedServicesSet(ESS)–TwoormoreBasicServiceSetsareconnectedbyacommondistributionsystem.微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端•RoamingwithoutinterruptionrequiresthesameSSIDonallaccesspoints.•Maximumdataretrycountexceeded•Toomanybeaconsmissed•Datarateshifted•Periodicintervals微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端无线VLAN的支持•MultipleSSIDs---支持多个SSID•Multiplesecuritytypes---支持多个类型的安全策略•SupportformultipleVLANsfromswitches---支持多个VLAN•802.1Qtrunkingprotocol---支持802.1Qtrunking微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端(Cont.)•VLANspropagateacrossaccesspoints.•VLANnumbersareunique.•Accesspointshandleupto16VLANs.微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端•Meshaccesspointsautomaticallyestablishconnectiontocontroller.–Rooftopaccesspoints(RAP)connectviawiredconnection.–Meshaccesspoints(MAP)connectviaself-configuringbackhaulconnection.•Ciscousesmeshaccesspoints.•AdaptiveWirelessPath(AWP)protocolestablishesbestpathtoroot.•Accesspointauthenticatestocontrolleranddownloadsconfigurationandradioparameters.微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端(AWP)---自适应的无线路径协议自适应的无线路径协议自适应的无线路径协议自适应的无线路径协议AWPprotocolestablishesanoptimalpathtoroot.Eachaccesspointcarriesafeasiblesuccessororsuccessorsiftopologyorlinkhealthchanges.AWPusesa“parentsticky”valuetomitigaterouteflaps.微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端•Indoorandoutdoorwirelesssolutionsforeducationcustomers.•Ruggedmeshsolutionsforenterprisecustomers.Publicsector•Connectingperipheraldevicesacrossthemesh.•Establishinghotzonesforpublicsafetyormunicipaldepartments.Serviceprovider•HotspotsbecomehotzoneswithWi-Fiaccess.---户外无线网络的市场定位微思网络微思网络微思网络微思网络专注高端专注高端专注高端专注高端•TypesofWLANtopologiesareclientaccess,bridging,andmeshnetworking.•Wirelessnetworksarebuiltwithmultiplewirelesscells.•WLANroamingoccursseamlesslybetweenwirelesscells.•WLANssupportVLANsandQoS.•WLANmeshnetworksextendthewirelessnetworkbeyondtheboundariesofwiredLANs.