pppoe协议分析与改进-(5345)

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1、ABSTRACTABSTRACTPPPoEprotocolisbasedontwowidelyacceptedstandard：802.3Ethernetstandardandpoint-to-pointdial-upPPPprotocol，ittakesfulladvantageoftheaddressingcapabilityofEthernettechnology，itsessenceisprovidingalogicalpoint-to-pointlinkinthesharedmediumnetwork，makeeachuserintheEthernet

2、canestablishlogicalPPPconnectionwithbroadbandaccessserver.Usersdon'tneedtounderstandtheLANtechnologydeeply，justtakeitasordinarydial-upline，atthesametime，operatorsdonotneedtospendafortunetotransformexistingLANstructure.PPPoEisacurrentlywidelyusedaccessprotocol，providingagoodmechanismo

3、fauthentication，billing.Thoughnowadaysthecitynetworkinfrastructureisgood，theaccessnetworkbroadlyusesopticalfiber，fivetypesoftwisted-paircablewhichcansupporthighbandwidthandlargecapacitytransmission.However，insomespecialsituations，suchastheoldnetwork，accessnetworklinkqualitycannotbegu

4、aranteed.Ontheproject’sdemandandtheneedforthiskindofnetwork’stransformation，onaccountofthelimitationoftheactualconditions，thispapertakesthemethodofnetworkprotocoloptimizationtoservespecialnetworkscenarios.PPPoEprotocolandthePPPhasbeenintroducedinthispaper，analyzedtheresonfornetworkti

5、medelayandthedifferencebetweenthenetworkterminalequipments’processingcapacity，andputforwardadynamicdelaytolerancemechanismaccordingtotheterminal’slinkquality，improvingtheproblemoflinkchanneldropsduetothenetworklinkquality，inadditionproposeamethodtoimprovenetworklinkbandwidthutilizati

6、onbyPPPoEheadcompressionandIPheadercompression.Intheimplementationpart，fortheserverthispaperputsforwarddistributedarchitectureoftheseparationofthecontrolandforwardingmodule，whichcanbeappliedtolarge-scaleroutingaccessandimprovetheforwardingperformance;fortheclientitusestheembeddedLinu

7、x，theprogrammoduleisdesigntothemainfunctioninPPPoEprotocol，makingthecodeasshortaspossible.Accordingtotheactualapplyingscenarios，thispapersimulatesthesimilarscenario，thetestshowsthatundertheconditionofthepoorlinkqualitytheoptimizationofPPPoEprotocolincreasethenumberofonlineclientsatth

8、esametime，II