Kungani Isikhungo Sakho Sedatha Sidinga Ama-Packet Brokers Wenethiwekhi?
Yini i-network packet broker?
I-network packet broker (NPB) ubuchwepheshe obusebenzisa amathuluzi okuqapha ahlukahlukene ukuze ufinyelele futhi uhlaziye ithrafikhi kunethiwekhi yonkana. Izihlungi zomthengisi wephakethe ziqoqe imininingwane yethrafikhi kusuka kuzixhumanisi zenethiwekhi futhi zisabalalisa ethuluzini layo elifanele lokuqapha inethiwekhi. Ngokuba namakhono okuhlunga athuthukile, i-NPB ingasiza ekuhlinzekeni ukusebenza kwedatha okungcono, ukuvikeleka okuqinile, kanye nendlela esheshayo yokunquma umsuka wanoma yiziphi izinkinga ngokusebenzisa ubuhlakani bohlelo lokusebenza oluthuthukisiwe. I-NPB inyusa ukusebenza kahle kwenethiwekhi ngenkathi ngesikhathi esifanayo yehlisa izindleko zakho. Abathengi bephakethe lenethiwekhi kwesinye isikhathi bangabizwa ngokuthi amaswishi okufinyelela idatha, amaswishi okuqapha, amaswishi e-matrix, noma izihlanganisi zamathuluzi.
Ezweni lanamuhla eliqhutshwa idijithali, izikhungo zedatha zidlala indima ebalulekile ekulawuleni nasekugcineni inqwaba yolwazi. Ngokukhula kwezidingo zokusebenza kwenethiwekhi okuthembekile nokusebenza kahle, kubalulekile ukuthi izikhungo zedatha zibe nama-network packet broker (NPBs) endaweni. Ngisho noma isikhungo sedatha singakafaki i-ethernet ye-100G, i-NPB isengaba usizo kakhulu.
Ngaphakathi kwesikhungo sedatha, amathuluzi ahlukahlukene asetshenziswa ukuqapha ukusebenza kwenethiwekhi, ukunikeza ukubonakala, nokunciphisa izinsongo nabalingisi ababi. Lawa mathuluzi ancike kakhulu ekusakazeni okuqhubekayo kwamaphakethe ukuze asebenze ngempumelelo. Kodwa-ke, ngaphandle kwe-NPB, ukuphatha nokusabalalisa lawa maphakethe kungaba umsebenzi oyinselele.
I-NPB isebenza njengehabhu elimaphakathi eliqoqayo, lihlele, futhi lisabalalise ithrafikhi yenethiwekhi kumathuluzi okuqapha adingekayo noma okuvikela. Isebenza njengephoyisa lomgwaqo, iqinisekisa ukuthi amaphakethe alungile afinyelela kumathuluzi afanele, athuthukise ukusebenza kwawo futhi avumele ukuhlaziya okungcono nokuxazulula izinkinga.
Esinye sezizathu eziyinhloko zokuthi kungani isikhungo sedatha sidinga i-NPB yikhono lokusingatha izivinini ezikhulayo zenethiwekhi. Njengoba ubuchwepheshe buthuthuka, isivinini senethiwekhi siyaqhubeka nokukhuphuka. Amathuluzi okuqapha enethiwekhi evamile angase angahlonyiselwe ukuphatha umthamo wamaphakethe akhiqizwa amanethiwekhi anesivinini esiphezulu njenge-100G ethernet. I-NPB isebenza njengesilawuli sethrafikhi, yehlisa ithrafikhi yenethiwekhi ibe isivinini esilawulekayo samathuluzi, iqinisekisa ukuqapha nokuhlaziya okunembile.
Ngaphezu kwalokho, i-NPB inikeza ukunwebeka nokuvumelana nezimo ukuze kuhlangatshezwane nezidingo ezikhula njalo zesikhungo sedatha. Njengoba ithrafikhi yenethiwekhi ikhula, amathuluzi engeziwe angase adinge ukungezwa nengqalasizinda yokuqapha. I-NPB ivumela ukuhlanganiswa okulula kwamathuluzi amasha ngaphandle kokuphazamisa ukwakheka kwenethiwekhi okukhona. Iqinisekisa ukuthi wonke amathuluzi okuqapha nawokuvikela ayafinyelela kumaphakethe adingekayo, kungakhathaliseki ubukhulu benethiwekhi nobunkimbinkimbi.
Izikhungo zedatha nazo zibhekene nenselelo yokuphatha ithrafikhi evela ezindaweni ezahlukene ngaphakathi kwenethiwekhi. Njengoba i-architecture esabalalisiwe iba yinto evamile, kubalulekile ukuba nokubonakala okumaphakathi nokulawula ithrafikhi yenethiwekhi. I-NPB isebenza njengendawo yokuhlanganisa emaphakathi lapho yonke ithrafikhi yenethiwekhi ihlangana khona, ihlinzeka ngokubuka okuphelele kwayo yonke inethiwekhi. Lokhu kubonakala okumaphakathi kuvumela ukuqapha okungcono, ukuxazulula izinkinga, nokuhlaziya ukuphepha.
Ukwengeza, i-NPB ithuthukisa ukuphepha ngaphakathi kwesikhungo sedatha ngokuhlinzeka ngamakhono okuhlukanisa inethiwekhi. Ngokusatshiswa okungapheli kokuhlaselwa ku-inthanethi nabalingisi abanonya, kubalulekile ukuhlukanisa nokuhlola ithrafikhi yenethiwekhi ukuze kutholwe futhi kuncishiswe noma yiziphi izinsongo ezingaba khona. I-NPB ingahlunga futhi ihlukanise ithrafikhi yenethiwekhi ngokusekelwe kumibandela ehlukahlukene, njengekheli le-IP eliwumthombo noma uhlobo lwephrothokholi, iqinisekise ukuthi ithrafikhi esolisayo iyathunyelwa ukuze ihlaziywe okwengeziwe futhi ivimbele noma yikuphi ukwephulwa kwezokuphepha okungaba khona.
Ngaphezu kwalokho, i-NPB nayo idlala indima ebalulekile ekubonakaleni kwenethiwekhi nokuqapha ukusebenza. Ihlinzeka ngemininingwane enemininingwane ngethrafikhi yenethiwekhi, ivumela abaphathi besikhungo sedatha ukuthi babone izingqinamba, izinkinga zesikhathi sokulinda, noma okunye ukukhathazeka ngokusebenza. Ngokuba nesithombe esicacile sokusebenza kwenethiwekhi, abalawuli bangenza izinqumo ezinolwazi ukuze bathuthukise inethiwekhi futhi bathuthukise ukusebenza kahle kukonke.
Ngokungeziwe kulezi zinzuzo, i-NPB iphinda yenza ingqalasizinda yokuqapha inethiwekhi ibe lula ngokunciphisa inani lamathuluzi okuqapha adingekayo. Esikhundleni sokusebenzisa amathuluzi amaningi azimele omsebenzi ngamunye wokuqapha, i-NPB ihlanganisa imisebenzi ibe ingxenyekazi eyodwa. Lokhu kuhlanganiswa akugcini nje ngokulondoloza isikhala kodwa futhi kunciphisa izindleko ezihlobene nokuthenga, ukuphatha, nokugcina amathuluzi amaningi.
Ngaphezu kwalokho, i-NPB ithuthukisa ukusebenza kahle kokuqapha kanye nezinqubo zokuxazulula izinkinga. Ngokukwazi ukuhlunga nokuqondisa amaphakethe athile kumathuluzi adingekayo, abaphathi besikhungo sedatha bangakwazi ukuhlonza ngokushesha futhi baxazulule izinkinga zenethiwekhi. Le ndlela ehlelekile yonga isikhathi nezinsiza, iqinisekisa isikhathi esincane sokuphumula futhi ikhulise ukutholakala kwenethiwekhi.
Sengiphetha, i-NPB iyingxenye ebalulekile yanoma iyiphi ingqalasizinda yesikhungo sedatha. Ihlinzeka ngamakhono adingekayo okuphatha, ukusabalalisa, nokuthuthukisa ithrafikhi yenethiwekhi, ukuqinisekisa ukuqapha okusebenzayo, ukuphepha, nokuhlaziywa kokusebenza. Ngezidingo ezikhulayo zamanethiwekhi anesivinini esikhulu kanye nezakhiwo ezisabalalisiwe, i-NPB inikeza ukulinganisa, ukuguquguquka, kanye nokubeka endaweni eyodwa okudingekayo ukuze kuhlangatshezwane nalezi zinselele ngqo. Ngokutshala imali ku-NPB, opharetha besikhungo sedatha bangaqinisekisa ukusebenza kahle nokuqina kwengqalasizinda yabo yenethiwekhi kuyilapho benciphisa ngempumelelo izinsongo ezingaba khona futhi bevikela idatha ebalulekile.
Isikhathi sokuthumela: Sep-13-2023
