Ngenxa yokuthi amaswishi e-LAN asebenzisa ukushintsha kwesekethe okubonakalayo, angaqinisekisa ngobuchwepheshe ukuthi i-bandwidth phakathi kwawo wonke ama-port okufaka nawokukhipha ayiphikisani, okwenza kube lula ukudluliselwa kwedatha okusheshayo phakathi kwama-port ngaphandle kokudala izithiyo zokudlulisela. Lokhu kwandisa kakhulu ukudluliswa kwedatha kwamaphuzu olwazi lwenethiwekhi futhi kuthuthukisa uhlelo lwenethiwekhi iyonke. Lesi sihloko sichaza ubuchwepheshe obuhlanu obuyinhloko obuhilelekile.
1. I-ASIC Ehlelekayo (Isekethe Ehlanganisiwe Eqondene Nesicelo)
Lena yi-chip yesekethe ehlanganisiwe eklanyelwe ngqo ukwenza ngcono ukushintsha kwe-Layer-2. Iwubuchwepheshe bokuhlanganisa obuyinhloko obusetshenziswa ezixazululweni zokuxhumana zanamuhla. Imisebenzi eminingi ingahlanganiswa ne-chip eyodwa, okunikeza izinzuzo ezifana nokuklama okulula, ukuthembeka okuphezulu, ukusetshenziswa kwamandla aphansi, ukusebenza okuphezulu, kanye nezindleko eziphansi. Ama-chip e-ASIC ahlelwe asetshenziswa kabanzi kuma-switch e-LAN angenziwa ngezifiso ngabakhiqizi—noma ngisho nabasebenzisi—ukuze ahlangabezane nezidingo zohlelo lokusebenza. Aye abe ngolunye lobuchwepheshe obubalulekile kuzinhlelo zokusebenza ze-switch ze-LAN.
2. Iphayiphi Esatshalalisiwe
Ngokusebenzisa amapayipi asakazwayo, izinjini eziningi zokudlulisa ezisakazwayo zingathumela ngokushesha nangokuzimele amaphakethe azo. Kumbhobho owodwa, ama-chip amaningi e-ASIC angacubungula ozimele abaningana ngasikhathi sinye. Lokhu kuhambisana kanye nokusebenzisa amapayipi kuphakamisa ukusebenza kokudlulisa ezingeni elisha, kufeza ukusebenza kwesilinganiso somugqa wethrafikhi ye-unicast, yokusakaza, kanye ne-multicast kuzo zonke izimbobo. Ngakho-ke, ukusebenzisa amapayipi asakazwayo kuyisici esibalulekile ekuthuthukiseni isivinini sokushintsha i-LAN.
3. Inkumbulo Ekhula Ngokuguquguqukayo
Kumikhiqizo yokushintsha i-LAN ethuthukisiwe, ukusebenza okuphezulu kanye nokusebenza kwekhwalithi ephezulu kuvame ukuthembela ohlelweni lwememori oluhlakaniphile. Ubuchwepheshe bememori obunwebeka ngokuguquguqukayo buvumela iswishi ukuthi yandise umthamo wememori ngokushesha ngokuya ngezidingo zethrafikhi. Kumaswishi e-Layer-3, ingxenye yememori ihlotshaniswa ngqo nenjini yokudlulisela phambili, okuvumela ukwengezwa kwamamojula amaningi esibonakalayo. Njengoba inani lezinjini zokudlulisela phambili landa, imemori ehlobene nayo iyanda ngokufanele. Ngokucutshungulwa kwe-ASIC okusekelwe kumapayipi, ama-buffer angakhiwa ngokuguquguqukayo ukuze kwandiswe ukusetshenziswa kwememori futhi kuvinjelwe ukulahleka kwephakethe ngesikhathi sokuqhuma okukhulu kwedatha.
4. Izindlela Zomugqa Othuthukile
Kungakhathaliseki ukuthi idivayisi yenethiwekhi inamandla kangakanani, isazoqhubeka nokuminyana ezigabeni zenethiwekhi ezixhunyiwe. Ngokwesiko, ithrafikhi echwebeni igcinwa emgqeni owodwa wokukhipha, icutshungulwa ngokuqinile ngokulandelana kwe-FIFO kungakhathaliseki ukuthi kubaluleke kangakanani. Uma umugqa ugcwele, amaphakethe engeziwe ayawa; lapho umugqa unwebeka, ukubambezeleka kuyanda. Le ndlela yendabuko yokufaka umugqa idala ubunzima ezinhlelweni zokusebenza zesikhathi sangempela neze-multimedia.
Ngakho-ke, abathengisi abaningi bathuthukise ubuchwepheshe obuthuthukisiwe bokufaka umugqa ukuze basekele izinsizakalo ezihlukanisiwe kuzingxenye ze-Ethernet, ngenkathi belawula ukubambezeleka kanye nokushaqeka. Lokhu kungafaka amazinga amaningi emigqeni nge-port ngayinye, okuvumela ukuhlukaniswa okungcono kwamazinga ethrafikhi. Amaphakethe edatha e-multimedia kanye nesikhathi sangempela abekwa emigqeni ebaluleke kakhulu, futhi ngokufaka umugqa olinganayo onesisindo, le migqa icutshungulwa kaningi—ngaphandle kokungazinaki ngokuphelele ithrafikhi ebaluleke kakhulu. Abasebenzisi bohlelo lokusebenza bendabuko abaqapheli izinguquko esikhathini sokuphendula noma ukuphuma, kuyilapho abasebenzisi abasebenzisa izinhlelo zokusebenza ezibaluleke kakhulu bethola izimpendulo ngesikhathi.
5. Ukuhlukaniswa Kwethrafikhi Okuzenzakalelayo
Ekudlulisweni kwenethiwekhi, ukugeleza kwedatha okunye kubaluleke kakhulu kunezinye. Izishintshi ze-LAN ze-Layer-3 seziqalile ukusebenzisa ubuchwepheshe bokuhlukanisa ithrafikhi ngokuzenzakalelayo ukuze zihlukanise phakathi kwezinhlobo ezahlukene kanye nezinto eziza kuqala zethrafikhi. Umkhuba ubonisa ukuthi ngokuhlukaniswa okuzenzakalelayo, izishintshi zingayala ipayipi lokucubungula amaphakethe ukuthi lihlukanise ukugeleza okuqokwe ngumsebenzisi, kufezwe ukubambezeleka okuphansi kanye nokudluliselwa okubaluleke kakhulu. Lokhu akugcini nje ngokuhlinzeka ngokulawula nokuphatha okusebenzayo kwemifudlana yethrafikhi ekhethekile, kodwa futhi kusiza ukuvimbela ukuminyana kwenethiwekhi.
Isikhathi sokuthunyelwe: Novemba-20-2025