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OҎ(gu)ģƔ(sh)(j)IJɺҕVXLANg

2015-07-01 14:37:34   ߣ   ԴЇ“(lin)ͨ ϯ   uՓ0 c


S“(lin)W(wng)+ӋԼ(sh)(j)ȘI(y)ՑõҎ(gu)ģӋ̓MȼgAĸNҎ(gu)\IƔ(sh)(j)󴺹SȻ̓MƔ(sh)(j)ĵPIgѽ(jng)l(f)չķ̓MW(wng)j̓MҲuȻy(tng)̓MW(wng)(VLAN)gѽ(jng)ܝMF(xin)Ɣ(sh)(j)Ҏ(gu)\Il(f)չITS“(lin)Ƴ܉Q@NVXLANgܵ˸Ɣ(sh)(j)ĽOcPע

y(tng)vlangľ

y(tng)VLANgIEEE802.1Qf(xi)hԓf(xi)hĎʽ涨xVLAN IDλ(sh)12أֻ֧4094VLANSƔ(sh)(j)ĵĸNI(y)ՑõҎ(gu)ģI(y)LͿҪǧfVLANy(tng)VLANĔ(sh)ܝMƔ(sh)(j)պI(y)Ҏ(gu)ģl(f)չ

̓MԺƔ(sh)(j)ă(ni)̓MCĔ(sh)ԭеCl(f)˔(sh)c֮̓MC̓MW(wng)MACַ(sh)Ҳ@Ɣ(sh)(j)cBӵĽQCַa(chn)˺ܴ_̓MC(sh)ܶr½QCMACַĶ”(sh)(j)āG߮a(chn)ďVӰ푾W(wng)j

Ɣ(sh)(j)̓MCͨҪһ(ni)wڂy(tng)VLANW(wng)j£̓MCֻڶӾW(wng)jwҞ܉֧̓MCwҪڶӾW(wng)jVLANMAVLANûyӰVLANVĸx˾W(wng)jЧ

VXLAN(Virtual eXtensible Local Area Network)̓MUչW(wng)һNMд̓MW(wng)jUչbgԺܺõؽQ}Ŀǰ@gѽ(jng)ɞNҎ(gu)\IƔ(sh)(j)IJɺҕPIüg

VXLANgԭ

VXLANһNbgӾW(wng)jĻAϽӾW(wng)jĶF(xin)ĶӻBVXLANͨ^һUDPʽʹԭД(sh)(j)ă(ni)Ɂݔ׌ɔ(sh)(j)peڶӾW(wng)jЂͣVXLANĈķbYˆDʾVXLANİӷb̓(ni)ӵԭʼɃɲ

VXLANУF(xin)lags(8b)I횱OÞ1RO0ЧReservedfields(24b and 8b)횱OÞ0VXLANĿĶ˿̖4789һVXLAN IDVNI-VXLAN Network Identifier)̓MW(wng)jĘRLȞ24bitscԭеVLAN 12bitsLVXLAN IDLһ֧16M̓MW(wng)jVXLANg˜W(wng)j߅һVTEPVxlan Tunnel End Point߉݋wF(xin)W(wng)j̓MW(wng)jĸxVXLANĵķbͽbVXLAN˜߀xһVXLANW(wng)PwVXLAN Gatewayؓ؟VXLAN֮gԼͬy(tng)VLAN֮gĵӳDl(f)VXLANcy(tng)VLANͬVXLAN̓MC֮gL

VXLANĸʽ

VXLANg(yu)

ȣи`ԭ̓MCwֻͬW(wng)εĶӾW(wng)jMУܵλõćVXLANͨ^g혋ԿԽ3ӾW(wng)j̓M2ӾW(wng)j̓MCλ÷ɢĔ(sh)(j)֮gMwƣ@ʹ̓MCIJ`ͷ

VXLAN(sh)(j)ژ˜ʵ3IPW(wng)j\L2-4·HASHҪ͹ĵ2ӻAݔҪF(xin)оW(wng)jMи죻VXLANW(wng)j߅OW(wng)jеO䲻ҪRe̓MCMACַppOMACַWO

VXLANژI(y)˜ʵĽQCӲ\QCϟoMܛҲزĴa汾þW(wng)jоƬ󲿷֧VXLANg\VXLANͨ^MAC in UDPbӾW(wng)jF(xin)W(wng)j̓MW(wng)j԰Ҏ(gu)Լ̓MW(wng)jҪ]W(wng)jIPַ͏Vƣ󽵵˾W(wng)jy

󣬘OĔU˶ӾW(wng)εĔ(sh)VXLANgͨ^24صVNIֶ֧_16MVXLANεľW(wng)jxÑMиx͘RܵԝMƔ(sh)(j)ĺ߉݋W(wng)ηָ

VXLAN𷽷

VXLANģMʾD

ψDVXLANW(wng)jOҪNɫքeVTEP(VXLAN Tunnel End Point)VXLANW(wng)PVXLAN IPW(wng)Pڑϵy(tng)fֻc@NOPc׌ӂy(tng)IPW(wng)joP

VTEPVXLANW(wng)PVXLAN IPW(wng)PΑB(ti)̓MQCҲQC(j)VTEPVXLANW(wng)PVXLAN IPW(wng)P̓MQC߀QCVXLANW(wng)jIJ𷽷ҪN

1) һNVTEPVXLANW(wng)PVXLAN IPW(wng)Pͨ^bڷϵܛF(xin)
2) ڶNVTEPVXLANW(wng)PVXLAN IPW(wng)PQCГ֧SR-IOVʹ̓MCͨ^SR-IOVgֱcQCB̓MCڽ뽻QCMVXLANĵķbͽb
3)NVTEPɰbڷϵܛF(xin)VXLANW(wng)PVXLAN IPW(wng)PQCГ

ڵһN𷽷VXLANĵķbbͨ^ܛF(xin)ռòַYԴ؄eVXLAN IPW(wng)PLrɞϵy(tng)ƿiڵڶN𷽷Ҫͨ^һЩҪgF(xin)̓MCcVTEPČMW(wng)`N𷽷ͨ^bڷϵܛF(xin)̓MCVTEPͨ^QCF(xin)VTEPͨ^I(y)ӲQCF(xin)VXLAN IPW(wng)PĶɳdҎ(gu)ģDl(f)ɞϵy(tng)ƿiN𷽷Y˵һN͵ڶNă(yu)Ŀǰ(yu)IJ𷽷

VXLANÈ

VXLANƔ(sh)(j)֮g̓MCwеđãijI(y)ڲͬĔ(sh)(j)вͬI(y)Ցõ̓MC(sh)(j)֮g̓MCwǽ(jng)˱C̓MCw^ИI(y)ղД࣬tҪCw̓MCIPַMACַȅ(sh)ֲ׃@Ҫ̓MCwǰڽy(tng)һӾW(wng)jʹÂy(tng)Qˆ}ҪُIµOԷx܌TVLANɢyW(wng)jɭh(hun)Լϵy(tng)͹_NȆ}

˳ɹF(xin)̓MCژI(y)ղДrµwƣͨ^VXLANgF(xin)VXLANMAC in UDPľW(wng)j̓MgֻҪW(wng)j֧IPDl(f)IP·ɿ_ĽKÑɽһ󷶇ӾW(wng)j̓MC“(lin)ĽQCVXLANPϢ̓MC“(lin)QC֮gVXLANVXLANW(wng)Pͨ^VXLANVXLANW(wng)PɌF(xin)ڲͬ(sh)(j)֮g̓MCɹwҿɱC̓MCw^оW(wng)jo֪I(y)ղД

VXLANSDNh(hun)µđSDNh(hun)ͨ^SDN팍F(xin)VXLANIPVID֮gPϢČPϵSDNARPO@ӴVXLAN`cUչԡVXLANgSDNh(hun)пԱV

ͬһVXLAN(ni)ͬ̓MCͨ̓MCϾSDNMP̓MCַVXLANKϢČm(x)̓MC֮gĻͨͨ^SDNMARPĴ𣬲ֱ°l(f)Ķ̓MC֮gͨ

ڲͬVXLAN֮g̓MCͨƔ(sh)(j)SDNД(sh)(j)ă(ni)P̓MCϢԌSDNVXLANW(wng)PͬƔ(sh)(j)֮gSDNͨ^P·Ʌf(xi)hQP̓MCϢF(xin)ͬVXLANͬy(tng)W(wng)j̓MC֮gͨ

VXLANǰ

ڻ“(lin)W(wng)+Ӌ(sh)(j)ȑúͷտٰl(f)չĕrƔ(sh)(j)Ҫ߉݋̓MW(wng)j(sh)ӣVXLANgЧQƔ(sh)(j)߉݋W(wng)β̓MC“(lin)QCMACַȆ}Ҫڴ͵Ӌ\I̻߳I(y)Ɣ(sh)(j)СI(y)CĔ(sh)(j)ģy(tng)VLANgѽ(jng)VXLANg߀δ߀кܶҪMĵطSVXLANgɞW(wng)j̓MgеgҎ(gu)ģƔ(sh)(j)ı،õV

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