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O(sh)Ҏ(gu)Ɣ(sh)(j)IJɺҕVXLANg(sh)(yng)

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


S“(lin)W(wng)+ӋԼ(sh)(j)ȘI(y)(w)(yng)õҎ(gu)ģӋ̓Mȼg(sh)A(ch)ĸNҎ(gu)ģ\IƔ(sh)(j)󴺹SȻ̓MƔ(sh)(j)ĵP(gun)Ig(sh)ѽ(jng)l(f)չķ(w)̓MW(wng)j(lu)̓MҲuȻy(tng)̓MW(wng)(VLAN)g(sh)ѽ(jng)ܝMF(xin)Ɣ(sh)(j)Ҏ(gu)\Il(f)չITS“(lin)Ƴ܉Q@NVXLANg(sh)ܵ˸Ɣ(sh)(j)ĽO(sh)cP(gun)ע

y(tng)vlang(sh)ľ

y(tng)VLANg(sh)IEEE802.1Qf(xi)hԓf(xi)hĎʽ涨xVLAN IDλ(sh)12ֻ֧4094VLANSƔ(sh)(j)ĵĸNI(y)(w)(yng)õҎ(gu)ģI(y)(w)LͿҪǧfVLANy(tng)VLANĔ(sh)ܝMƔ(sh)(j)պI(y)(w)Ҏ(gu)ģl(f)չ

(w)̓MԺƔ(sh)(j)ă(ni)̓MC(j)Ĕ(sh)ԭеC(j)l(f)˔(sh)c֮(yng)̓MC(j)̓MW(wng)MACַ(sh)Ҳ(yng)ӣ@Ɣ(sh)(j)c(w)BӵĽQC(j)ַa(chn)˺ܴ_(dng)̓MC(j)(sh)ܶr(do)½QC(j)MACַĶ(do)”(sh)(j)āG߮a(chn)ďV(yn)Ӱ푾W(wng)j(lu)

Ɣ(sh)(j)̓MC(j)ͨҪһ(ni)wڂy(tng)VLANW(wng)j(lu)̓MC(j)ֻڶӾW(wng)j(lu)wҞ܉֧̓MC(j)wҪڶӾW(wng)j(lu)VLANM(jn)A(y)ãVLANûyӰVLANVĸx˾W(wng)j(lu)Ч

VXLAN(Virtual eXtensible Local Area Network)̓MU(ku)չW(wng)һNM(jn)д̓MW(wng)j(lu)U(ku)չbg(sh)ԺܺõؽQ}Ŀǰ@g(sh)ѽ(jng)ɞNҎ(gu)\IƔ(sh)(j)IJɺҕP(gun)I(yng)üg(sh)

VXLANg(sh)ԭ

VXLANһNbg(sh)ӾW(wng)j(lu)ĻA(ch)ϽӾW(wng)j(lu)ĶF(xin)ĶӻBVXLANͨ^һUDPʽʹԭД(sh)(j)ă(ni)Ɂݔ׌ɔ(sh)(j)peڶӾW(wng)j(lu)ЂVXLANĈķbY(ji)(gu)ˆDʾVXLANİӷb̓(ni)ӵԭʼɃɲ֡

VXLANF(xin)lags(8b)I횱O(sh)Þ1RO(sh)0ЧReservedfields(24b and 8b)횱O(sh)Þ0VXLANĿĶ˿̖4789һVXLAN IDVNI-VXLAN Network Identifier)̓MW(wng)j(lu)Ę(bio)RLȞ24bitscԭеVLAN 12bitsLȣVXLAN IDLһ֧16M̓MW(wng)j(lu)VXLANg(sh)(bio)(zhn)УW(wng)j(lu)߅һVTEPVxlan Tunnel End Point߉݋wF(xin)W(wng)j(lu)̓MW(wng)j(lu)ĸxVXLANĵķbͽbVXLAN(bio)(zhn)߀xһVXLANW(wng)P(gun)wVXLAN Gatewayؓ(f)؟(z)VXLAN֮gԼͬy(tng)VLAN֮gĵӳD(zhun)l(f)VXLANcy(tng)VLANͬVXLAN̓MC(j)֮gL

VXLANĸʽ

VXLANg(sh)(yu)

и`ԭ̓MC(j)wֻͬW(wng)εĶӾW(wng)j(lu)M(jn)Уܵλõć(yn)VXLANͨ^g(sh)혋(gu)ԿԽ3ӾW(wng)j(lu)̓M2ӾW(wng)j(lu)̓MC(j)λ÷ɢĔ(sh)(j)֮gM(jn)w@ʹ̓MC(j)IJ`ͷ

VXLAN(sh)(j)ژ(bio)(zhn)3IPW(wng)j(lu)\L2-4·HASH(qing)Ҫ(gu)͹ĵ2ӻA(ch)ݔҪF(xin)оW(wng)j(lu)M(jn)иVXLANW(wng)j(lu)߅O(sh)䣬W(wng)j(lu)еO(sh)䲻ҪRe̓MC(j)MACַppO(sh)MACַW(xu)(x)O(sh)

VXLANژI(y)(bio)(zhn)ĽQC(j)Ӳ\QC(j)ϟoM(jn)ܛҲزĴa汾þW(wng)j(lu)оƬ󲿷֧VXLANg(sh)\VXLANͨ^MAC in UDPbӾW(wng)j(lu)F(xin)W(wng)j(lu)̓MW(wng)j(lu)԰Ҏ(gu)Լ̓MW(wng)j(lu)Ҫ]W(wng)j(lu)IPַ͏V󽵵˾W(wng)j(lu)yȡ

OĔU(ku)˶ӾW(wng)εĔ(sh)VXLANg(sh)ͨ^24صVNIֶ֧_(d)16MVXLANεľW(wng)j(lu)xÑM(jn)иx͘(bio)RܵƣԝMƔ(sh)(j)ĺ߉݋W(wng)ηָ

VXLAN𷽷

VXLANģMʾD

ψDVXLANW(wng)j(lu)O(sh)ҪNɫքeVTEP(VXLAN Tunnel End Point)VXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)ڑ(yng)ϵy(tng)fֻc@NO(sh)P(gun)c׌ӂy(tng)IPW(wng)j(lu)oP(gun)

VTEPVXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)ΑB(ti)̓MQC(j)ҲQC(j)(j)VTEPVXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)̓MQC(j)߀QC(j)VXLANW(wng)j(lu)IJ𷽷ҪN

1) һNVTEPVXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)ͨ^bڷ(w)ϵܛF(xin)
2) ڶNVTEPVXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)QC(j)Г(dn)(w)֧SR-IOVܣʹ̓MC(j)ͨ^SR-IOVg(sh)ֱcQC(j)B̓MC(j)ڽ뽻QC(j)M(jn)VXLANĵķbͽb
3)NVTEPɰbڷ(w)ϵܛF(xin)VXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)QC(j)Г(dn)

ڵһN𷽷VXLANĵķbbͨ^ܛF(xin)ռòַ(w)YԴ؄eVXLAN IPW(wng)P(gun)(dng)Lrɞϵy(tng)ƿiڵڶN𷽷Ҫͨ^һЩҪg(sh)F(xin)̓MC(j)cVTEPČMW(wng)`N𷽷ͨ^bڷ(w)ϵܛF(xin)̓MC(j)VTEPͨ^QC(j)F(xin)(w)VTEPͨ^I(y)ӲQC(j)F(xin)VXLAN IPW(wng)P(gun)ĶɳdҎ(gu)ģD(zhun)l(f)ɞϵy(tng)ƿiN𷽷Y(ji)˵һN͵ڶNă(yu)Ŀǰ(yu)IJ𷽷

VXLAN(yng)È

VXLANƔ(sh)(j)֮g̓MC(j)wеđ(yng)ãijI(y)ڲͬĔ(sh)(j)вͬI(y)(w)(yng)õ̓MC(j)(sh)(j)֮g̓MC(j)wǽ(jng)˱C̓MC(j)w^ИI(y)(w)ДtҪCw̓MC(j)IPַMACַȅ(sh)ֲ׃@Ҫ̓MC(j)wǰڽy(tng)һӾW(wng)j(lu)ʹÂy(tng)Qˆ}ҪُIµO(sh)Էx܌(do)TVLANɢyW(wng)j(lu)ɭh(hun)Լϵy(tng)͹_NȆ}

˳ɹF(xin)̓MC(j)ژI(y)(w)Дrµwͨ^VXLANg(sh)F(xin)VXLANMAC in UDPľW(wng)j(lu)̓Mg(sh)ֻҪW(wng)j(lu)֧IPD(zhun)l(f)IP·ɿ_(d)ĽKÑɽһ󷶇ӾW(wng)j(lu)̓MC(j)“(lin)ĽQC(j)VXLANP(gun)Ϣ̓MC(j)“(lin)QC(j)֮gVXLANVXLANW(wng)P(gun)ͨ^VXLANVXLANW(wng)P(gun)ɌF(xin)ڲͬ(sh)(j)֮g̓MC(j)ɹwҿɱC̓MC(j)w^оW(wng)j(lu)o֪I(y)(w)Дࡣ

VXLANSDNh(hun)µđ(yng)SDNh(hun)ͨ^SDN팍F(xin)VXLANIPVID֮gP(gun)ϢČ(yng)P(gun)ϵSDNARPO(sh)@ӴVXLAN`cU(ku)չVXLANg(sh)SDNh(hun)пԱV(yng)

ͬһVXLAN(ni)ͬ̓MC(j)ͨ̓MC(j)ϾSDNM(jn)P(gun)̓MC(j)ַVXLANKϢČ(yng)m(x)̓MC(j)֮gĻͨͨ^SDNM(jn)ARPĴֱ°l(f)Ķ̓MC(j)֮gͨ

ڲͬVXLAN֮g̓MC(j)ͨƔ(sh)(j)SDNД(sh)(j)ă(ni)P(gun)̓MC(j)ϢԌSDNVXLANW(wng)P(gun)ͬƔ(sh)(j)֮gSDNͨ^P(gun)·Ʌf(xi)hQP(gun)̓MC(j)ϢF(xin)ͬVXLANͬy(tng)W(wng)j(lu)̓MC(j)֮gͨ

VXLAN(yng)ǰ

ڻ“(lin)W(wng)+Ӌ㡢(sh)(j)ȑ(yng)úͷ(w)ٰl(f)չĕrƔ(sh)(j)Ҫ߉݋̓MW(wng)j(lu)(sh)ӣVXLANg(sh)ЧQƔ(sh)(j)߉݋W(wng)β̓MC(j)“(lin)QC(j)MACַȆ}Ҫ(yng)ڴ͵Ӌ(w)\I̻߳I(y)Ɣ(sh)(j)СI(y)C(j)(gu)Ĕ(sh)(j)ģy(tng)VLANg(sh)ѽ(jng)⣬VXLANg(sh)߀δ߀кܶҪM(jn)ĵطSVXLANg(sh)ɞW(wng)j(lu)̓Mg(sh)(dng)еg(sh)Ҏ(gu)Ɣ(sh)(j)ı،õV(yng)

P(gun)x

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