基于BGP的企业网互连设计与实现

10810()BGPTheDesignandImplementationofBGPofInterconnectionofEnterpriseNetwork23BGP2011101641BGPOSPFIOUandlinux2BGPBGPBGPBGPCiscoIOUBGPBGP3[1].[D].,2006[2].BGP[D].,2006[3].BGP_ROM[D].,2006[4].BGP-4[D].,2005[5].BGP[D].,2006[6]()RandyZhangMicahBartellBGP20089[7][]SamHalabiInternet(2)2011-6[8][]RandyZhangMicahBartellCisco:BGP()20089[9]2008-11[10]22008-9[11]200542011/9/25-2011/9/272011/9/28-2012/1/8,2012/1/9-2012/1/92012/1/10-2012/5/42012/05/06-2012/05/155()()6BGP150001InternetBGPBGPBGPTCPPortNumer179TCP.BGPKeepaliveTCPIpv6Ipv4Ipv6BGPIpv4BGPIpv62BGPBGPBGPBGP7BGPBGPBorderGatewayProtocolInternetInternetBGP4CIDRInternetIPBGPEGPBGPIGPBGP,BGPBGPBGPIBGPIBGPBGPBGPIBGPBGPIGP.(ASBGP)BGPBGPBGPOSPFOSPFOSPFOSPF(CiscosecureCRTLOGshowiproutePING812RFC342011/9/25-2011/9/272011/9/28-2012/1/8,2012/1/9-2012/1/92012/1/10-2012/5/42012/05/06-2012/05/15[1].[D].,2006[2].BGP[D].,2006[3].BGP_ROM[D].,2006[4].BGP-4[D].,2005[5].BGP[D].,2006[6]()RandyZhangMicahBartellBGP20089[7][]SamHalabiInternet(2)2011-6[8][]RandyZhangMicahBartellCisco:BGP()20089[9]2008-11[10]22008-9[11]20059()()101231OSPFOpenshortpathfirstOSPF2BGPBGPBGP3BGP11BGP20122.20BGP12()BGP()20111072011107()BGP20111232011123)20122152012215()BGPBGP201238201238()13IOU20123262012326()20124102012410()20124152012415()PPTPPTPPT201253201253()()20114BGPInternetBGPBGP1501020304050616BGP150002012.5.3IGPIGPIGPIGPBGPBGPBGPBGPCiscoIOUBGPBGP3-5BGPOSPFIOUandlinux17Withthenetworktechnologydevelopment,thenetworkpopularizationgradually,andenterprisenetworkisthattheconstructionoftheenterprisetotheinevitableoutcomeofthedevelopmentofinformatization.Butalongwiththestrengtheningoftheenterprise,thefollowingisenterprisenetworkexpansion.IftheInternetistoolarge,theIGPismorethantheconvergenceability,can'tuseIGPbearing.IGPalsocannotrunthecomplexroutingstrategiestomeetcustomerrequirement.SoIGPunabletorealizecomplexnetworkroutingstrategies.Thatthischoosewhatkindofagreementtosupportcomplexenterprisenetwork.Thebigenterprisenetworkwhichisdefinedinthethesishaslevelsanditistrans-area.BGPisadifferentautonomoussystemroutercommunicationbetweenexternalgatewayagreements.UseBGPisaprettygoodsolvetheaboveproblem.ThepurposeofthisstudyistoverifytheadaptabilityofBGPinmajornetworkinterconnectionandtoconfirmthefeasibilityoftheprinciplebyelaborateandstudytheprincipleoftheBGPprotocol.Thenaspecificsolutionaboutenterprisenetworkinterconnectionisusedtoprovethisview.ThroughthesimulationofCisco'sIOU,wefoundthatheadquartersandbranchcanhavefreeexchangeofvisitsbyBGPinterconnection.SotheuseofBGPasnetworkprotocolofenterprisenetworkinterconnectioniscompletelyfeasible..3-5BGPOSPFNetworktopologyIOUandlinux25%1010540%1010510535%51510100005901008089707960696025%1010540%1010510535%515101000059010080897079606960BGP41BGPIGPIGPIGPIGPBGPBGPBGPBGPCiscoIOUBGPBGPBGPOSPFIOUandlinux2TheDesignandImplementationofBGPofInterconnectionofEnterprisenetworkAbstractWiththenetworktechnologydevelopment,thenetworkpopularizationgradually,andenterprisenetworkisthattheconstructionoftheenterprisetotheinevitableoutcomeofthedevelopmentofinformatization.Butalongwiththestrengtheningoftheenterprise,thefollowingisenterprisenetworkexpansion.IftheInternetistoolarge,theIGPismorethantheconvergenceability,can'tuseIGPbearing.IGPalsocannotrunthecomplexroutingstrategiestomeetcustomerrequirement.SoIGPunabletorealizecomplexnetworkroutingstrategies.Thatthischoosewhatkindofagreementtosupportcomplexenterprisenetwork.Thebigenterprisenetworkwhichisdefinedinthethesishaslevelsanditistrans-area.BGPisadifferentautonomoussystemroutercommunicationbetweenexternalgatewayagreements.UseBGPisaprettygoodsolvetheaboveproblem.ThepurposeofthisstudyistoverifytheadaptabilityofBGPinmajornetworkinterconnectionandtoconfirmthefeasibilityoftheprinciplebyelaborateandstudytheprincipleoftheBGPprotocol.Thenaspecificsolutionaboutenterprisenetworkinterconnectionisusedtoprovethisview.ThroughthesimulationofCisco'sIOU,wefoundthatheadquartersandbranchcanhavefreeexchangeofvisitsbyBGPinterconnection.SotheuseofBGPasnetworkprotocolofenterprisenetworkinterconnectioniscompletelyfeasible.KeywordsBGPOSPFNetworktopologyIOUandlinux31.......................................................................................................................11.1..........................................................................................................11.2...............................................................................11.3..........................................................11.3.1....................................................................11.3.1...........................................................................21.4..............................................................................................22IOU.............................................................................32.1BGP....................................................................................32.1.1BGP........................................................................................32.1.2...............