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O(sh)Ҏ(gu)Ɣ(sh)(j)IJɺҕVXLANg(sh)(yng)

2015-07-01 14:37:34   ߣ   (li)ԴЇ(gu)“(lin)ͨ ϯ   u(png)Փ0 c(din)


S“(lin)W(wng)+Ӌ(j)Լ(sh)(j)ȘI(y)(w)(yng)õҎ(gu)ģӋ(j)̓Mȼg(sh)A(ch)ĸNҎ(gu)ģ\(yn)I(yng)Ɣ(sh)(j)󴺹SȻ̓MƔ(sh)(j)ĵP(gun)Ig(sh)ѽ(jng)l(f)չķ(w)̓MW(wng)j(lu)̓MҲuӡȻy(tng)̓MW(wng)(VLAN)g(sh)ѽ(jng)ܝMF(xin)Ɣ(sh)(j)Ҏ(gu)\(yn)I(yng)l(f)չITS“(lin)Ƴ܉Q@NVXLANg(sh)ܵ˸Ɣ(sh)(j)ĽO(sh)c(din)P(gun)ע

y(tng)vlang(sh)ľ

y(tng)VLANg(sh)IEEE802.1Qf(xi)hԓf(xi)hĎʽ涨xVLAN IDλ(sh)12أֻ֧4094(g)VLANSƔ(sh)(j)ĵĸNI(y)(w)(yng)õҎ(gu)ģI(y)(w)L(zhng)ͿҪǧf(wn)(g)VLANy(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)(j)c֮(du)(yng)̓MC(j)̓MW(wng)MACַ(sh)Ҳ(yng)@(du)Ɣ(sh)(j)c(w)BӵĽQC(j)ַa(chn)˺ܴ_(dng)̓MC(j)(sh)ܶr(sh)(hu)(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)wƣҞ܉֧̓MC(j)wҪڶӾW(wng)j(lu)(du)VLANM(jn)A(y)VLANûyӰVLANVĸx˾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(wn)}Ŀǰ@(g)g(sh)ѽ(jng)ɞNҎ(gu)\(yn)I(yng)Ɣ(sh)(j)IJɺҕP(gun)I(yng)üg(sh)

VXLANg(sh)ԭ

VXLANһNbg(sh)ӾW(wng)j(lu)ĻA(ch)ϽӾW(wng)j(lu)Ķ(sh)F(xin)ĶӻBVXLANͨ^(gu)һ(g)UDPʽʹԭД(sh)(j)(bo)ă(ni)Ɂ(li)ݔ׌ɔ(sh)(j)peڶӾW(wng)j(lu)ЂVXLANĈ(bo)ķbY(ji)(gu)ˆDʾVXLAN(bo)İӷb̓(ni)ӵԭʼɃɲ֡

VXLAN(bo)F(xin)lags(8b)I횱O(sh)Þ1RO(sh)0ЧReservedfields(24b and 8b)횱O(sh)Þ0VXLANĿĶ˿̖(ho)4789һ(g)VXLAN IDVNI-VXLAN Network Identifier)̓MW(wng)j(lu)Ę(bio)R(sh)L(zhng)Ȟ24bitscԭеVLAN 12bitsL(zhng)VXLAN IDL(zhng)һ֧16M(g)̓MW(wng)j(lu)VXLANg(sh)(bio)(zhn)УW(wng)j(lu)߅һ(g)VTEPVxlan Tunnel End Point߉݋w(sh)F(xin)W(wng)j(lu)̓MW(wng)j(lu)ĸxVXLAN(bo)ĵķbͽbVXLAN(bio)(zhn)߀xһ(g)VXLANW(wng)P(gun)(sh)wVXLAN Gatewayؓ(f)؟(z)VXLAN֮gԼͬy(tng)VLAN֮g(bo)ĵӳD(zhun)l(f)VXLANcy(tng)VLANͬVXLAN̓MC(j)֮gL

VXLAN(bo)ĸʽ

VXLANg(sh)(yu)(sh)

ȣи`ԭ(li)̓MC(j)wֻͬW(wng)εĶӾW(wng)j(lu)M(jn)ܵλõć(yn)VXLANͨ^(gu)g(sh)(li)(gu)ԿԽ(g)3ӾW(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)\(yn)УL2-4·HASH(qing)Ҫ(gu)͹ĵ2ӻA(ch)ݔҪ(du)F(xin)оW(wng)j(lu)M(jn)и죻VXLANW(wng)j(lu)߅O(sh)W(wng)j(lu)еO(sh)䲻ҪR(sh)e̓MC(j)MACַppO(sh)MACַW(xu)(x)O(sh)

VXLANژI(y)(bio)(zhn)ĽQC(j)Ӳ\(yn)QC(j)ϟo(w)M(jn)ܛ(j)ҲزĴa汾þW(wng)j(lu)оƬ󲿷֧VXLANg(sh)\(yn)VXLANͨ^(gu)MAC in UDPb(li)ӾW(wng)j(lu)(sh)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)y

󣬘OĔU(ku)˶ӾW(wng)εĔ(sh)VXLANg(sh)ͨ^(gu)24صVNIֶ֧_(d)16MVXLANεľW(wng)j(lu)x(du)ÑM(jn)иx͘(bio)R(sh)ܵԝMƔ(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)(du)ڑ(yng)ϵy(tng)(li)f(shu)ֻc@NO(sh)P(gun)c׌ӂy(tng)IPW(wng)j(lu)o(w)P(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)ͨ^(gu)bڷ(w)ϵܛ(sh)F(xin)
2) ڶNVTEPVXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)QC(j)Г(dn)(w)֧SR-IOVʹ̓MC(j)ͨ^(gu)SR-IOVg(sh)ֱcQC(j)B̓MC(j)ڽ뽻QC(j)M(jn)VXLAN(bo)ĵķbͽb
3)NVTEPɰbڷ(w)ϵܛ(sh)F(xin)VXLANW(wng)P(gun)VXLAN IPW(wng)P(gun)QC(j)Г(dn)

(du)ڵһN𷽷VXLAN(bo)ĵķbbͨ^(gu)ܛ(sh)F(xin)(hu)ռòַ(w)YԴ؄eVXLAN IPW(wng)P(gun)(dng)L(wn)r(sh)(hu)ɞϵy(tng)ƿi(du)ڵڶN𷽷Ҫͨ^(gu)һЩҪg(sh)(sh)F(xin)̓MC(j)cVTEPČ(du)MW(wng)`N𷽷ͨ^(gu)bڷ(w)ϵܛ(sh)F(xin)̓MC(j)VTEPͨ^(gu)QC(j)(sh)F(xin)(w)VTEPͨ^(gu)I(y)ӲQC(j)(sh)F(xin)VXLAN IPW(wng)P(gun)ĶɳdҎ(gu)ģD(zhun)l(f)ɞϵy(tng)ƿiN𷽷Y(ji)˵һN͵ڶNă(yu)(sh)(du)Ŀǰ(yu)IJ𷽷

VXLAN(yng)È(chng)

VXLANƔ(sh)(j)֮g̓MC(j)wеđ(yng)ij(g)I(y)ڲͬĔ(sh)(j)вͬI(y)(w)(yng)õ̓MC(j)(sh)(j)֮g̓MC(j)wǽ(jng)(hu)ģ˱C̓MC(j)w^(gu)ИI(y)(w)ДtҪCw̓MC(j)IPַMACַȅ(sh)ֲ׃@Ҫ̓MC(j)wǰڽy(tng)һ(g)ӾW(wng)j(lu)ʹÂy(tng)Qˆ(wn)}Ҫُ(gu)IµO(sh)Էx܌(do)TVLANɢyW(wng)j(lu)ɭh(hun)Լϵy(tng)͹_(ki)NȆ(wn)}

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

VXLANSDNh(hun)µđ(yng)SDNh(hun)£ͨ^(gu)SDN(li)(sh)F(xin)VXLANIPVID֮gP(gun)ϢČ(du)(yng)P(gun)ϵSDNARPO(sh)䣬@ӴVXLAN`cU(ku)չVXLANg(sh)SDNh(hun)пԱV(yng)

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

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

VXLAN(yng)ǰ

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

P(gun)x

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