Kwimeko yesicelo esiqhelekileyo se-NPB, eyona ngxaki inzima kakhulu kubalawuli kukulahleka kwepakethi okubangelwa kukuxinana kweepakethi ezibulelweyo kunye neenethiwekhi zeNPB.Ukulahleka kwepakethi kwi-NPB kunokubangela ezi mpawu zilandelayo kwizixhobo zokuhlalutya ngasemva:
- I-alamu iveliswa xa isalathisi sokujonga ukusebenza kwenkonzo ye-APM siyancipha, kwaye izinga lempumelelo yokuthengiselana liyancipha
- I-alamu ye-NPM yokubeka iliso kwintsebenzo yenethiwekhi ye-alam yenziwe
- Inkqubo yokubeka iliso yokhuseleko iyasilela ekuboneni uhlaselo lwenethiwekhi ngenxa yokushiywa kwesiganeko
- Ilahleko yeziganeko zophicotho-zincwadi zokuziphatha eziveliswe yinkqubo yophicotho lwenkonzo
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Njengenkqubo ephakathi yokubanjwa kunye nokuhanjiswa kwenkqubo yokubeka iliso kwi-Bypass, ukubaluleka kwe-NPB kuyabonakala.Kwangaxeshanye, indlela eqhuba ngayo ipakethe yedatha yetrafikhi yahluke kakhulu kutshintshiselwano lwesiqhelo lwenethiwekhi ephilayo, kwaye itekhnoloji yolawulo lokuxinana kweetrafikhi kwiinkonzo ezininzi zothungelwano azisebenzi kwi-NPB.Uyisombulula njani ilahleko yepakethe ye-NPB, masiqale kwingcambu yesizathu sohlalutyo lokulahleka kwepakethi ukuyibona!
I-NPB/TAP yePakethi yokuLahleka kweNgxaki yokuNxibelelana kweMpembelelo yoHlalutyo
Okokuqala, sihlalutya indlela yokwenyani yendlela kunye nobudlelwane bemephu phakathi kwenkqubo kunye nokungenayo nokuphumayo kwinqanaba le-1 okanye kwinqanaba le-NPB network.Kungakhathaliseki ukuba luhlobo luni lwe-NPB ye-topology yenethiwekhi, njengenkqubo yokuqokelela, kukho igalelo le-traffic eninzi-kuninzi kunye nobudlelwane obuphumayo phakathi "kokufikelela" kunye "nemveliso" yenkqubo yonke.
Emva koko sijonga imodeli yeshishini le-NPB ngokwembono yeetshiphusi ze-ASIC kwisixhobo esinye:
Uphawu loku-1: "I-traffic" kunye ne "fizical interface rate" ye-input and output interfaces i-asymmetrical, ekhokelela kwinani elikhulu le-micro-bursts sisiphumo esingenakuthintelwa.Kwiimeko eziqhelekileyo zokudibana kweendlela ezininzi ukuya kwenye okanye ezininzi ukuya kwezininzi, umlinganiselo wembonakalo yojongano lwemveliso udla ngokuba mncinci kunereyithi yetotali yembonakalo yojongano lwegalelo.Ngokomzekelo, iziteshi ze-10 zeqoqo le-10G kunye ne-1 ye-channel ye-10G yemveliso;Kwimeko yokusasazwa kwamanqanaba amaninzi, yonke iNPBBS inokujongwa iyonke.
Uphawu 2: Izibonelelo ze-ASIC chip cache zincinci kakhulu.Ngokubhekiselele kwi-chip ye-ASIC esetyenziswa ngokuqhelekileyo ngoku, i-chip ene-640Gbps yokutshintshiselana umthamo ine-cache ye-3-10Mbytes;I-chip ye-3.2Tbps ye-chip ine-cache ye-20-50 mbytes.Kubandakanya i-BroadCom, i-Barefoot, i-CTC, i-Marvell kunye nabanye abavelisi beetshiphusi ze-ASIC.
Uphawu 3: Indlela eqhelekileyo yokulawula ukuhamba kwePFC ekupheleni ukuya ekupheleni ayisebenzi kwiinkonzo zeNPB.Ingundoqo yendlela yokulawula ukuhamba kwe-PFC kukufumana impendulo yokuphela kwe-traffic yokunciphisa i-traffic, kwaye ekugqibeleni unciphise ukuthunyelwa kweepakethi kwi-protocol stack ye-endpoint yonxibelelwano ukunciphisa ukuxinana.Nangona kunjalo, umthombo wepakethi weenkonzo ze-NPB ufana neepakethi ezibukwayo, ngoko ke isicwangciso sokucwangcisa ukuxinana sinokulahlwa kuphela okanye sigcinwe.
Oku kulandelayo yinkangeleko yogqabhuko-dubulo oluqhelekileyo kwigophe lokuhamba:
Ukuthatha i-interface ye-10G njengomzekelo, kwinqanaba lesibini lomzobo wokuhlalutya kwe-traffic trend, izinga lokuhamba ligcinwa malunga ne-3Gbps ixesha elide.Kwitshati yohlalutyo lwe-micro millisecond, i-traffic spike (i-MicroBurst) igqithise kakhulu i-interface ye-10G yezinga lomzimba.
IiNdlela eziPhambili zokuNciphisa i-NPB Microburst
Nciphisa ifuthe le-asymmetric physical interface rate rate ukungalingani-Xa uyila inethiwekhi, nciphisa igalelo le-asymmetric kunye nemveliso yesantya sojongano lomzimba kangangoko kunokwenzeka.Indlela eqhelekileyo kukusebenzisa i-link ye-interface yezinga eliphezulu, kwaye ugweme i-asymmetric physical interface rates (umzekelo, ukukopisha i-1 Gbit / s kunye ne-10 Gbit / s yetrafikhi ngexesha elifanayo).
Ukwandisa umgaqo-nkqubo wolawulo lwe-cache yenkonzo ye-NPB- Umgaqo-nkqubo wolawulo lwe-cache eqhelekileyo osebenzayo kwinkonzo yokutshintsha ayisebenzi kwinkonzo yokuthunyelwa kwenkonzo ye-NPB.Umgaqo-nkqubo wolawulo lwe-cache ye-static guarantee + Ukwabelana ngeDynamic kufuneka kuphunyezwe ngokusekelwe kwiimpawu zenkonzo ye-NPB.Ukuze kuncitshiswe impembelelo ye-NPB microburst phantsi komda we-hardware ye-chip yangoku.
Ukuphumeza ulawulo lobunjineli bezendlela- Ukuphumeza ulawulo lokuhlelwa kwenkonzo yobunjineli bezithuthi esekelwe kuhlelo lwezithuthi.Ukuqinisekisa umgangatho wenkonzo yemigca ephambili eyahlukeneyo esekwe kuluhlu lwemigca egqagqeneyo, kwaye uqinisekise ukuba iipakethi zenkonzo ezibuthathaka zabasebenzisi zinokuthunyelwa ngaphandle kwelahleko yepakethe.
Isisombululo senkqubo esifanelekileyo siphucula isakhono sepakethe ye-caching kunye nekhono lokubumba i-traffic- Ukudibanisa isisombululo ngeendlela ezahlukeneyo zobugcisa ukwandisa isakhono sepakethe ye-caching ye-ASIC chip.Ngokulungisa ukuhamba kwiindawo ezahlukeneyo, i-micro-burst iba yi-micro-uniform flow curve emva kokubunjwa.
I-Mylinking™ iMicro Burst yoLawulo lweSicombululo seTrafikhi
Isicwangciso soku-1 - Isicwangciso sothungelwano solawulo lwe-cache elungiselelweyo + inethiwekhi yoluhlu olubanzi lolawulo lomgangatho wenkonzo ephambili
Isicwangciso solawulo lweCache elungiselelwe inethiwekhi yonke
Ngokusekwe ekuqondeni okunzulu kweempawu zenkonzo yeNPB kunye neemeko zoshishino ezisebenzayo zabathengi abaninzi, iimveliso zokuqokelela izithuthi zikaMylinking™ ziphumeza iseti ye "static assurance + dynamic sharing" isicwangciso solawulo lwe-cache ye-NPB yenethiwekhi yonke, ene- isiphumo esihle kulawulo lwe-cache ye-traffic kwimeko yenani elikhulu le-asymmetric input kunye nojongano oluphumayo.Ukunyamezela kwe-microburst kuphunyezwa kwinqanaba eliphezulu xa i-cache ye-ASIC yangoku imisiwe.
I-Microburst Processing Technology-Ulawulo olusekwe kwizinto eziphambili kwishishini
Xa iyunithi yokubamba i-traffic isetyenziswe ngokuzimeleyo, inokuphinda ibekwe phambili ngokubaluleka kwesixhobo sokuhlalutya ngasemva okanye ukubaluleka kwedatha yenkonzo ngokwayo.Ngokomzekelo, phakathi kwezixhobo ezininzi zokuhlalutya, i-APM / BPC inokubaluleka okuphezulu kunohlalutyo lokhuseleko / izixhobo zokubeka iliso zokhuseleko kuba ibandakanya ukubeka iliso kunye nokuhlalutya kwedatha yezalathisi ezahlukeneyo zeenkqubo zoshishino ezibalulekileyo.Ngoko ke, kule meko, idatha efunwa yi-APM / BPC inokuchazwa njengento ephambili kakhulu, idatha efunekayo ngokubeka iliso kukhuseleko / izixhobo zokuhlalutya ukhuseleko zingachazwa njengento ephambili ephakathi, kwaye idatha efunwayo ngezinye izixhobo zokuhlalutya inokuchazwa njengephantsi. okubalulekileyo.Xa iipakethi zedatha eziqokelelweyo zingena kwi-port input, izinto eziphambili zichazwe ngokubaluleka kweepakethi.Iipakethi zezinto eziphambili ngokubaluleka zithunyelwa ngokukhethiweyo emva kokuba iipakethi zezinto eziphambili eziphakamileyo zithunyelwe, kwaye iipakethi zezinye izinto eziphambili zithunyelwa emva kokuba iipakethi zezinto eziphambili zithunyelwa.Ukuba iipakethi zezinto eziphambili ngokubaluleka ziyaqhubeka ukufika, iipakethi zezinto eziphambili ngokubaluleka zithunyelwa ngokukhethwayo.Ukuba idatha yegalelo idlula isakhono sokudlulisa kwizibuko lemveliso ixesha elide, idatha engaphezulu igcinwa kwi-cache yesixhobo.Ukuba i-cache igcwele, ifowuni ikhetha ukulahla iipakethi zomyalelo ophantsi.Le ndlela yokulawula ephambili iqinisekisa ukuba izixhobo zokuhlalutya eziphambili zinokufumana ngokufanelekileyo idatha ye-traffic yasekuqaleni efunekayo ukuhlalutya ngexesha langempela.
I-Microburst Processing Technology-isiqinisekiso sokuhlelwa komgangatho wenkonzo yenethiwekhi yonke
Njengoko kubonisiwe kulo mzobo ungentla, iteknoloji yokuhlelwa kwetrafikhi isetyenziselwa ukwahlula iinkonzo ezahlukeneyo kuzo zonke izixhobo kwinqanaba lokufikelela, ukudibanisa / umgca ongundoqo, kunye nomgangatho wokuphuma, kunye nezinto eziphambili kwiipakethi ezibanjiweyo ziphinda zimakishwe.Umlawuli we-SDN uhambisa umgaqo-nkqubo ophambili we-traffic ngendlela ephakathi kwaye uyisebenzise kwizixhobo zokuthumela.Zonke izixhobo ezithatha inxaxheba kuthungelwano zidweliswe kwimigca eyahlukeneyo ephambili ngokwezinto eziphambili ezithwalwa ziipakethi.Ngale ndlela, iipakethi eziphambili zetrafikhi eziphambili zinokufikelela kwilahleko yepakethi eyi-zero.Ukusombulula ngokufanelekileyo ingxaki yokulahleka kwepakethi yokubeka iliso kwe-APM kunye nenkonzo ekhethekileyo yophicotho lweenkonzo zetrafikhi.
Isisombululo 2 - i-GB-level yokwandisa i-Cache yesistim + i-Traffic Shaping Scheme
I-GB yeNqanaba leSistim yeCache eyandisiweyo
Xa isixhobo seyunithi yethu yokufumana itrafikhi sinezakhono zokuqhubekeka ezisebenzayo, sinokuvula isixa esithile sendawo kwimemori (RAM) yesixhobo njenge-Buffer yehlabathi jikelele yesixhobo, ephucula kakhulu umthamo we-Buffer wesixhobo.Kwisixhobo esinye sokufunyanwa, ubuncinci umthamo we-GB unokubonelelwa njengesithuba se-cache yesixhobo sokufumana.Obu buchwephesha benza umthamo we-Buffer weyunithi yethu yokufumana i-traffic isixhobo ngamakhulu amaxesha ngaphezulu kweso sesixhobo sokufumana esiqhelekileyo.Ngaphantsi komlinganiselo ofanayo wokuthumela, ubuninzi bexesha lokuqhushumba kwesixhobo sethu sokufunyanwa kwetrafikhi iba nde.Inqanaba le-millisecond elixhaswa zizixhobo zokufumana izinto eziqhelekileyo liye laphuculwa kwinqanaba lesibini, kwaye ixesha le-micro-burst elinokumelana nalo linyuswe ngamaxesha angamawaka.
Iindlela ezininzi zokuBumba iTrafikhi
I-Microburst Processing Technology - isisombululo esisekwe kwi-Buffer Caching enkulu + i-Traffic Shaping
Ngomthamo omkhulu we-Buffer, idatha ye-traffic eyenziwa yi-micro-burst igcinwe, kwaye iteknoloji yokubumba i-traffic isetyenziswe kwi-interface ephumayo ukufezekisa imveliso egudileyo yeepakethi kwisixhobo sokuhlalutya.Ngokusetyenziswa kobu buchwepheshe, into yokulahleka kwepakethi ebangelwa yi-micro-burst isonjululwe ngokusisiseko.
Ixesha lokuposa: Feb-27-2024
