ccna路由器工作状态

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1、CCNA路由器工作状态ccna5CCNP18Routing(bsci)Switching(BCMSN)Safety(ISCW)Optimization(ONT)ccie3Comprehensiveexperiment3CiscoH3CMicrosoft(Server2003,Server2008)Linux(Redhat)(RIIEL5.4)Binary:1+1二10Bit:abinarynumberByte:8bits二1bytePacket:adataunitthatcanbepassedcorrectlyD

2、uplex:linkcommunication(two-way/one-way)Fullduplex,halfduplex,simplexBandwidth:themaximumcommunicationspeedofalink(BPS)1GBPS二1000MBPS1MBPS二1000KBPS1KBPS二1000BPSLogicaladdress:theaddress(IPaddress)thatisplannedtohelpthedevice，shierarchicalforwardingdata・Physic

3、aladdress:theonlyplaceintheworldthatsolidifiesonanetworkinterfacecardcanhelpLANswitchestransferdatatospecificinterfaces・Router:thedevicethatpassesdatafromanIPaddresstothenetworkportalwherethedataisuploadedtothetargethost・Switch:thedataispassedfromonepointinth

4、eLANtoanother,dependingontheMACaddress・Singlebroadcast:packetswithspecifictargetaddressesGroupbroadcast:packetstargetedatgroupaddressesBroadcast:packetsthatareaddressedin255・255・255.255(all)Therouter'sinternalstoragesystem:Flash:static,non-volatile・Compressio

5、npackageforoperatingsystem(*****.bin)RAM:dynamic,volatile・UsedtoperformoperatingsystemandconfigurationNVRAM:static,non-volatile・ForstorageconfigurationRouterstartupprocess:1.POST(PowerOnSelfTest)ReadthemicrocodebootinROMLookforavailableoperatingsystem(IOS)pac

6、ksinFlashCopytheconfigurationtoexecutioninRAM1-4mustbecompletedRouterinterface:TheTypeSlot/PortFastethernet0/1Therouter'ssecondinterfaceforthefirstfastethericmoduleHowtomanagearouter:Console(console)PC)->console(router)Advantage:youdon，tneedtoloadtheoperating

7、system・YoucanconfigureyourrouterCons:usersmusthavetheconsolelinedirectlylinkedtotherouterRemotemanagement(Telnet,SSH)PC-IPnetwork-datainterface(router)Advantage:youdon'tneedastraightrouter(managementflexibility)Cons:youmustensurethattherouterisupandrunningatt

8、hesametimeastheIPaddressandthecorrespondingserviceHTTPmanagement3.SDMmanagement(csco)Cons:youneedapre-configured,high-endplatformtosupportitRouterconfigurationmode:1.TheusermodeTheRouter>