集线器-交换机-路由器的区别

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1、SerialPoint-to-PointConnectionsRouterconnectionsNetworkconnectionsattheCSU/DSUEIA/TIA-232EIA/TIA-449EIA-530V.35X.21CSU/DSUEnduserdeviceServiceProviderDTEDCEPoint-to-pointorcircuit-switchedconnectionCOSwitchCustomerPremisesEquipmentDemarcationLocalLoopWANserviceprov

2、idertollnetworkTrunksandswitchesProviderassignsconnectionparameterstosubscriberSSSSSSSLayer2DesignDeterminingthesizeofcollisiondomainsinhubbedandswitchednetworksLayer2DesignDiagramminghubplacementinastandards-basedextendedstartopologyARP地址解析协议知道IP地址，找MAC地址AddressResol

3、utionProtocol172.16.3.1172.16.3.2IP:172.16.3.2=???IneedtheEthernetaddressof176.16.3.2.AddressResolutionProtocol172.16.3.1IP:172.16.3.2Ethernet:0800.0020.1111172.16.3.2IP:172.16.3.2=???IneedtheEthernetaddressof176.16.3.2.Iheardthatbroadcast.Themessageisforme.HereismyEt

4、hernetaddress.AddressResolutionProtocolMapIPEthernetLocalARP172.16.3.1IP:172.16.3.2Ethernet:0800.0020.1111172.16.3.2IP:172.16.3.2=???IneedtheEthernetaddressof176.16.3.2.Iheardthatbroadcast.Themessageisforme.HereismyEthernetaddress.Example1:DestinationlocalFindingtheMA

5、CAddressRouterAExample2:DestinationnotlocalHostZHostYQueryBroadcastHostZMAC?HostZResponseHostYMACRouterAMACRoutingTable:NetforHostZMapIPEthernetNotLocalARP广播单播能收到能收到能收到收不到收不到收不到HUBSWITCHROUTERA与B通信，C是否收到？（集线器交换机路由器的区别）Half-duplexEthernetEthernetisahalf-duplextechnolog

6、yMostimportantarereceive(RX),transmit(TX),andcollisiondetectionEthernetphysicalconnectorprovidesseveralcircuitsEthernet10BaseTtransmissiontimePacketsizeinbytesTransmissiontimeinms6451.2512410100080015181214MicrosegmentationDedicatedpathsbetweensendingandreceivinghosts

7、LANsegmentationwithbridgesHowaswitchlearnsaddressesLearnsastation’slocationbyexaminingthesourceaddressSendoutallportswhenthedestinationaddressisabroadcast,multicastorunknownaddress(excepttheportthattheframeenter)ForwardwhenthedestinationislocatedadifferentinterfaceFil

8、terswhenthedestinationislocatedonthesameinterfaceTwoswitchingmethodsPreambleSFDDestinationhardwareAddressSourceHardwareAddre