[Ethernet.Switches(2013.4)].Charles.E.Spurgeon.文字版(1)

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1、EthernetSwitchesCharlesE.SpurgeonandJoannZimmermanEthernetSwitchesbyCharlesE.SpurgeonandJoannZimmermanCopyright©2013CharlesSpurgeonandJoannZimmerman.Allrightsreserved.PrintedintheUnitedStatesofAmerica.PublishedbyO’ReillyMedia,Inc.,1005GravensteinHighwayNorth,Sebastopol,CA95472.O’Reillybooksmayb

2、epurchasedforeducational,business,orsalespromotionaluse.Onlineeditionsarealsoavailableformosttitles(http://my.safaribooksonline.com).Formoreinformation,contactourcorporate/institutionalsalesdepartment:800-998-9938orcorporate@oreilly.com.Editor:MeghanBlanchetteCoverDesigner:RandyComerProductionE

3、ditor:MarisaLaFleurInteriorDesigner:DavidFutatoProofreader:MarisaLaFleurIllustrator:RebeccaDemarestApril2013:FirstEditionRevisionHistoryfortheFirstEdition:2013-03-29:FirstreleaseSeehttp://oreilly.com/catalog/errata.csp?isbn=9781449367305forreleasedetails.NutshellHandbook,theNutshellHandbooklogo

4、,andtheO’ReillylogoareregisteredtrademarksofO’ReillyMedia,Inc.EthernetSwitches,theimageofaCommonCuttlefish,andrelatedtradedressaretrademarksofO’ReillyMedia,Inc.Manyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsareclaimedastrademarks.Wherethosedesignationsappearinthisbo

5、ok,andO’ReillyMedia,Inc.,wasawareofatrade‐markclaim,thedesignationshavebeenprintedincapsorinitialcaps.Whileeveryprecautionhasbeentakeninthepreparationofthisbook,thepublisherandauthorsassumenoresponsibilityforerrorsoromissions,orfordamagesresultingfromtheuseoftheinformationcontainedherein.ISBN:9

6、78-1-449-36730-5[LSI]TableofContentsPreface.......................................................................vii1.BasicSwitchOperation.......................................................1WhatanEthernetSwitchDoes1BridgesandSwitches1WhatIsaSwitch?2OperationofEthernetSwitches3TransparentBr

7、idging4AddressLearning4TrafficFiltering6FrameFlooding7BroadcastandMulticastTraffic7CombiningSwitches9ForwardingLoops9SpanningTreeProtocol10SpanningTreePackets11ChoosingaRootBridge11ChoosingtheLeast-CostPath11BlockingLoopPaths12Spa