EX交换机RSTP设置、冗余链路配置.doc

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1、内容：1RSTP配置案例指南2接入冗余链路配置指南RedundantTrunkLinksforFasterRecovery（12页）注意：上述两种链路冗余方式同一个交换机上只能够用一种。几种查看STP状态的命令：showspanning-treebridge查看网络拓扑信息showspanning-treeinterface查看端口信息 showspanning-treebridgedetail查看拓扑改变信息monitorinterfacetraffic查看端口转发数据包的信息1、Example:Configuring

2、FasterConvergenceandImprovingNetworkStabilitywithRSTPonEXSeriesSwitchesEXSeriesswitchesuseRapidSpanningTreeProtocol(RSTP)bydefaulttoprovidealoop-freetopology.RSTPworksbyidentifyingcertainlinksaspointtopointlinksandblockingotherpossiblepaths.Whenoneofthepoint-to-poi

3、ntlinksfails,adesignatedalternatelinktransitionstotheforwardingstateandtakeover.WhenswitchesthatsupportredundantroutingenginesuseRSTP,itisimportanttokeepRSTPsynchronizedonbothRoutingEnginessothatnolossofserviceoccursafteraRoutingEngineswitchover.Configuringnonstopb

4、ridging(NSB)onaswitchwithredundantRoutingEngineskeepsRSTPsynchronizedonbothRoutingEngines.Thisway,RSTPremainsactiveimmediatelyafteraswitchoverbecauseitisalreadysynchronizedtothebackupRoutingEngine.RSTPdoesnothavetoreconvergeafteraRoutingEngineswitchoverwhenNSBisena

5、bledbecausetheneighbordevicesdonotdetectanRSTPchangeontheswitch.ThisexampledescribeshowtoconfigureRSTPandNSBonfourEXSeriesswitches:·Requirements·OverviewandTopology·ConfiguringRSTPandNSBonSwitch1·ConfiguringRSTPandNSBonSwitch2·ConfiguringRSTPandNSBonSwitch3·Configu

6、ringRSTPandNSBonSwitch4·VerificationRequirementsThisexampleusesthefollowinghardwareandsoftwarecomponents:·JunosOSRelease9.0orlaterforEXSeriesswitches·FourEXSeriesswitchesBeforeyouconfiguretheswitchesforRSTP,besureyouhave:·Installedthefourswitches.SeeConnectingandCo

7、nfiguringanEXSeriesSwitch(J-WebProcedure).·Performedtheinitialsoftwareconfigurationonallswitches.SeeInstallingandConnectinganEX3200Switch.OverviewandTopologyInthisexample,fourEXSeriesswitchesareconnectedinthetopologydisplayedinFigure1tocreatealoop-freetopology.Figu

8、re1:NetworkTopologyforRSTPTable1:ComponentsoftheTopologyforConfiguringRSTPonEXSeriesSwitchesPropertySettingsSwitch1ThefollowingportsonSwitch1arec