Esimweni esivamile sohlelo lokusebenza lwe-NPB, inkinga enzima kakhulu kubaphathi ukulahlekelwa kwephakethe okubangelwa ukuminyana kwamaphakethe anezibuko namanethiwekhi e-NPB.Ukulahleka kwephakethe ku-NPB kungabangela izimpawu ezilandelayo ezijwayelekile kumathuluzi okuhlaziya angemuva:
- I-alamu ikhiqizwa lapho inkomba yokuqapha ukusebenza kwesevisi ye-APM yehla, nezinga lempumelelo yokwenziwe liyancipha
- I-alamu ehlukile yokuqapha ukusebenza kwenethiwekhi ye-NPM iyakhiqizwa
- Uhlelo lokuqapha ukuphepha luyehluleka ukubona ukuhlaselwa kwenethiwekhi ngenxa yokweqiwa komcimbi
- Ukulahleka kwemicimbi yokuhlolwa kokuziphatha kwesevisi ekhiqizwe uhlelo lokuhlola isevisi
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Njengohlelo olumaphakathi lokuthwebula nokusabalalisa lokuqapha kwe-Bypass, ukubaluleka kwe-NPB kuyabonakala.Ngesikhathi esifanayo, indlela ecubungula ngayo ithrafikhi yephakethe yedatha ihluke kakhulu ekushintsheni kwenethiwekhi ebukhoma yendabuko, futhi ubuchwepheshe bokulawula ukuminyana kwethrafikhi yamanethiwekhi amaningi abukhoma wesevisi ayisebenzi ku-NPB.Ungakuxazulula kanjani ukulahleka kwephakethe le-NPB, ake siqale kumsuka wokuhlaziywa kwembangela yokulahleka kwephakethe ukuze sikubone!
I-NPB/TAP Packet Loss Loss Cogestion Root Imbangela Ukuhlaziya
Okokuqala nje, sihlaziya umzila wangempela wethrafikhi kanye nobudlelwano bemephu phakathi kwesistimu engenayo nephumayo yeleveli 1 noma inethiwekhi yeleveli ye-NPB.Akunandaba ukuthi hlobo luni lwe-NPB ye-topology yenethiwekhi, njengesistimu yokuqoqa, kunobudlelwano bokufaka kwethrafikhi nokuphuma okuningi kuya kwabaningi phakathi "kokufinyelela" kanye "nokuphumayo" kwayo yonke isistimu.
Bese sibheka imodeli yebhizinisi ye-NPB ngokombono wama-chips e-ASIC kudivayisi eyodwa:
Isici 1: "Ithrafikhi" kanye "nezinga lokusebenzelana komzimba" lokokufaka nokuphumayo kuhlangana ku-asymmetrical, okuholela enanini elikhulu lama-micro-burst kuwumphumela ongenakugwemeka.Ezimweni ezijwayelekile zokuhlanganisa eziningi kuya koyedwa noma eziningi kuya kweziningi, izinga lomzimba lokusetshenziswa kubonwa livamise ukuba lincane kunesamba senani lesilinganiso esibonakalayo sokusetshenziswa kubonwa okokufaka.Isibonelo, iziteshi ze-10 zeqoqo le-10G kanye nesiteshi se-1 sokukhishwa kwe-10G;Esimeni sokuphakelwa kwamaleveli amaningi, yonke i-NPBBS ingabukwa iyonke.
Isici 2: Izinsiza ze-ASIC chip cache zilinganiselwe kakhulu.Mayelana ne-chip ye-ASIC evame ukusetshenziswa njengamanje, i-chip ene-640Gbps umthamo wokushintshanisa inenqolobane ye-3-10Mbytes;I-chip ye-3.2Tbps ene-cache engu-20-50 mbytes.Kubandakanya i-BroadCom, i-Barefoot, i-CTC, i-Marvell nabanye abakhiqizi bama-chips e-ASIC.
Isici 3: Indlela evamile yokulawula ukugeleza kwe-PFC ekupheleni ukuya ekupheleni ayisebenzi kumasevisi e-NPB.Umongo wendlela yokulawula ukugeleza kwe-PFC ukufeza impendulo yokuphela kwethrafikhi yokucindezela, futhi ekugcineni unciphise ukuthunyelwa kwamaphakethe esitaki sephrothokholi yesiphetho sokuxhumana ukuze unciphise ukuminyana.Kodwa-ke, umthombo wephakethe wezinsizakalo ze-NPB ungamaphakethe afakwe esibukweni, ngakho-ke isu lokucubungula ukuminyana lingalahlwa kuphela noma lifakwe kunqolobane.
Okulandelayo ukubonakala kwe-micro-burst evamile ku-flow curve:
Ukuthatha isikhombimsebenzisi se-10G njengesibonelo, kumdwebo wokuhlaziywa kwethrafikhi yezinga lesibili, izinga lethrafikhi ligcinwa cishe ku-3Gbps isikhathi eside.Eshadini lokuhlaziya ithrendi elincane le-millisecond, ukukhuphuka kwethrafikhi (i-MicroBurst) kweqe kakhulu izinga lomzimba le-interface ye-10G.
Amasu Abalulekile Wokunciphisa I-NPB Microburst
Yehlisa umthelela wokungafani kwesilinganiso sokusetshenziswa kubonwa ngokomzimba- Uma uklama inethiwekhi, nciphisa okokufaka kwe-asymmetric kanye nezinga le-interface ebonakalayo ngokusemandleni akho.Indlela evamile iwukusebenzisa isixhumanisi esibonakalayo esiphezulu sezinga eliphezulu, futhi ugweme izilinganiso zokusebenzelana ngokomzimba ezingalingani (isibonelo, ukukopisha ithrafikhi engu-1 Gbit/s no-10 Gbit/s ngesikhathi esifanayo).
Lungiselela inqubomgomo yokuphatha inqolobane yesevisi ye-NPB- Inqubomgomo evamile yokuphathwa kwenqolobane esebenza kusevisi yokushintsha ayisebenzi kusevisi yokudlulisela yesevisi ye-NPB.Inqubomgomo yokuphatha inqolobane yesiqinisekiso esimile + Ukwabelana Okunamandla kufanele kusetshenziswe ngokusekelwe kuzici zesevisi ye-NPB.Ukuze kuncishiswe umthelela we-NPB microburst ngaphansi komkhawulo wamanje wemvelo wehadiwe ye-chip.
Sebenzisa ukuphathwa kobunjiniyela bethrafikhi- Sebenzisa ukuphathwa kwezigaba zesevisi yobunjiniyela bethrafikhi okusekelwe ekuhlukaniseni kwethrafikhi.Qinisekisa ikhwalithi yesevisi yolayini abahlukene ababalulekile ngokusekelwe kumkhawulokudonsa womugqa wesigaba, futhi uqinisekise ukuthi amaphakethe wesevisi azwelayo wethrafikhi angathunyelwa ngaphandle kokulahlekelwa kwephakethe.
Isixazululo sesistimu esiphusile sithuthukisa amandla okugcina iphakethe kanye nekhono lokubumba ithrafikhi- Ihlanganisa isixazululo ngokusebenzisa izindlela ezahlukene zobuchwepheshe ukuze kwandiswe ikhono lokulondoloza iphakethe le-chip ye-ASIC.Ngokubumba ukugeleza ezindaweni ezihlukene, i-micro-burst iba ijika lokugeleza kweyunifomu encane ngemva kokubunjwa.
Isixazululo se-Mylinking™ Micro Burst Traffic Management
I-Scheme 1 - Isu lokuphatha inqolobane elungiselelwe inethiwekhi + nokuphathwa kwekhwalithi yesevisi ehlukaniswe kabanzi
Isu lokuphatha inqolobane lenzelwe inethiwekhi yonke
Ngokusekelwe ekuqondeni okujulile kwezici zesevisi ye-NPB kanye nezimo zebhizinisi ezingokoqobo zenani elikhulu lamakhasimende, imikhiqizo yeqoqo lethrafikhi ye-Mylinking™ isebenzisa isethi "yesiqiniseko esimile + sokwabelana okunamandla" isu lokuphatha inqolobane ye-NPB yayo yonke inethiwekhi, eno umphumela omuhle ekuphathweni kwenqolobane yethrafikhi esimweni senani elikhulu lokokufaka kwe-asymmetric kanye nezixhumanisi zokuphumayo.Ukubekezelelwa kwe-microburst kubonakala ngezinga eliphezulu lapho isilondolozi samanje se-chip ye-ASIC silungisiwe.
I-Microburst Processing Technology - Ukuphatha okusekelwe ezintweni eziza kuqala zebhizinisi
Uma iyunithi yokuthwebula i-traffic isetshenziswa ngokuzimela, ingase futhi ibekwe phambili ngokuya ngokubaluleka kwethuluzi lokuhlaziya i-back-end noma ukubaluleka kwedatha yesevisi ngokwayo.Isibonelo, phakathi kwamathuluzi amaningi okuhlaziya, i-APM/BPC inokubaluleka okuphezulu kunokuhlaziya ukuphepha/amathuluzi okuqapha ukuphepha ngoba ihlanganisa ukuqapha nokuhlaziywa kwedatha yenkomba ehlukahlukene yezinhlelo zebhizinisi ezibalulekile.Ngakho-ke, kulesi simo, idatha edingwa i-APM/BPC ingachazwa njengokubaluleke kakhulu, idatha edingwa amathuluzi okuhlola ukuphepha/ukuhlaziya ukuphepha ingachazwa njengokubalulekile okumaphakathi, futhi idatha edingwa amanye amathuluzi okuhlaziya ingachazwa njengephansi. okubalulekile.Uma amaphakethe edatha eqoqiwe engena endaweni yokufaka, okubalulekile kuchazwa ngokuhambisana nokubaluleka kwamaphakethe.Amaphakethe wezinto ezibalulekile eziphakeme adluliselwa kuqala ngemva kokuba amaphakethe ezinto ezibalulekile eziphakeme esedluliselwe phambili, futhi amaphakethe ezinye izinto ezibalulekile athunyelwa ngemva kokuthunyelwa kwamaphakethe okubaluleke kakhulu.Uma amaphakethe ezinto ezibalulekile eziphakeme eqhubeka nokufika, amaphakethe wezinto ezibalulekile eziphakeme athunyelwa ngokukhethayo.Uma idatha yokufaka idlula amandla okudlulisa wembobo yokukhiphayo isikhathi eside, idatha eyeqile igcinwa kunqolobane yocingo.Uma i-cache igcwele, idivayisi ngokukhethayo ilahla amaphakethe we-oda eliphansi.Le ndlela yokuphatha ebaluleke kakhulu iqinisekisa ukuthi amathuluzi okuhlaziya abalulekile angathola ngempumelelo idatha yoqobo yethrafikhi edingekayo ukuze ihlaziywe ngesikhathi sangempela.
I-Microburst Processing Technology - indlela yokuqinisekisa ukuhlukaniswa kwayo yonke ikhwalithi yesevisi yenethiwekhi
Njengoba kuboniswe esithombeni esingenhla, ubuchwepheshe bokuhlukaniswa kwethrafikhi busetshenziselwa ukuhlukanisa amasevisi ahlukene kuwo wonke amadivayisi kusendlalelo sokufinyelela, isendlalelo sokuhlanganisa/eyisisekelo, nesendlalelo sokuphumayo, futhi izinto ezibalulekile zamaphakethe athathiwe zimakwa kabusha.Isilawuli se-SDN siletha inqubomgomo yokubaluleka kwethrafikhi ngendlela emaphakathi futhi siyisebenzisa kumadivayisi okudlulisela phambili.Wonke amadivaysi abamba iqhaza ekuxhumekeni afakwe kumephu emigqeni ebalulekile eyahlukene ngokuya ngezinto ezibalulekile eziphathwa ngamaphakethe.Ngale ndlela, amaphakethe amancane ethrafikhi ebalulekile angathola ukulahlekelwa kwephakethe elinguziro.Ukuxazulula ngempumelelo inkinga yokulahleka kwephakethe yokuqapha kwe-APM kanye nezinsizakalo ezikhethekile zokuhlolwa kwesevisi ye-bypass traffic.
Isixazululo 2 - Inqolobane Yesistimu Yokwandisa Yezinga le-GB + Uhlelo Lokubumba Kwethrafikhi
Inqolobane Enwetshiwe Yesistimu Yezinga le-GB
Uma idivayisi yeyunithi yethu yokutholwa kwethrafikhi inamandla okucubungula athuthukile, ingavula inani elithile lesikhala kumemori (i-RAM) yedivayisi njenge-Buffer yomhlaba wonke yedivayisi, ethuthukisa kakhulu umthamo we-Buffer wedivayisi.Ngedivayisi eyodwa yokutholwa, okungenani umthamo we-GB unganikezwa njengesikhala senqolobane yedivayisi yokutholwa.Lobu buchwepheshe benza umthamo we-Buffer weyunithi yethu yokutholwa kwethrafikhi izikhathi ezingamakhulukhulu kunaleyo yedivayisi yokutholwa evamile.Ngaphansi kwesilinganiso esifanayo sokudlulisela phambili, ubude besikhathi sokuqhuma okuncane kakhulu kweyunithi yethu yokutholwa kwethrafikhi siba side.Izinga le-millisecond elisekelwa imishini yokutholwa yendabuko lithuthukisiwe lafika ezingeni lesibili, futhi isikhathi sokuqhuma okuncane okungabekezelelwa sikhuphuke ngezinkulungwane zezikhathi.
Ikhono Lokubunjwa Kwethrafikhi Yemigqa Eminingi
I-Microburst Processing Technology - isisombululo esisekelwe ku-Buffer Caching enkulu + Ukuma Kwethrafikhi
Ngomthamo we-Buffer omkhulu kakhulu, idatha yethrafikhi ekhiqizwe ukuqhuma okuncane igcinwa kunqolobane, futhi ubuchwepheshe bokwakheka kwethrafikhi busetshenziswa kusixhumi esibonakalayo esiphumayo ukuze kuzuzwe ukuphuma okushelelayo kwamaphakethe kuthuluzi lokuhlaziya.Ngokusebenzisa lobu buchwepheshe, into yokulahleka kwephakethe ebangelwa ukuqhuma okuncane ixazululwa ngokuyisisekelo.
Isikhathi sokuthumela: Feb-27-2024
