[AipuWaton] Ulwazi Olubalulekile Lonjiniyela Benethiwekhi: I-Mastering Core Switches

Zenzani izintambo ezingu-8 kukhebula ye-Ethernet

Emkhakheni wobunjiniyela benethiwekhi, ukuqonda ukushintshwa okubalulekile kubalulekile ukuze kuqinisekiswe ukuphathwa kahle kwedatha nokuxhumana okungenazihibe. Amaswishi abalulekile asebenza njengomgogodla wenethiwekhi, enza lula ukudluliswa kwedatha phakathi kwamanethiwekhi amancane ahlukene. Lesi sihloko sichaza imiqondo eyisisekelo eyisithupha unjiniyela ngamunye wenethiwekhi okufanele ayibambe ukuze athuthukise ukusebenzisa kwabo amaswishi ayinhloko futhi athuthukise ukusebenza kwenethiwekhi kukonke.

Ukuqonda I-Bandplane Bandwidth

Umkhawulokudonsa wendiza yasemuva, obuye ubizwe ngokuthi amandla okushintsha, uwumkhawulo ophezulu wedatha phakathi kwephrosesa yesixhumi esibonakalayo seswitch kanye nebhasi ledatha. Cabanga nje njengoba ingqikithi yenani lemizila ku-overpass-imizila eminingi isho ukuthi ithrafikhi eyengeziwe ingageleza kahle. Njengoba kunikezwe ukuthi konke ukuxhumana kwechweba kudlula endizeni engemuva, lo mkhawulokudonsa uvamise ukusebenza njengebhodlela ngezikhathi zethrafikhi ephezulu. Uma umkhawulokudonsa umkhulu, idatha eyengeziwe ingaphathwa ngesikhathi esisodwa, okuholela ekuhwebeni kwedatha okusheshayo. Ngokuphambene, umkhawulokudonsa okhawulelwe uzonciphisa ukucutshungulwa kwedatha.

Ifomula engukhiye:
I-Bandplane Bandwidth = Inombolo Yezikhumulo × Isilinganiso Sembobo × 2

Isibonelo, iswishi efakwe izimbobo ezingama-24 esebenza ku-1 Gbps ingaba nomkhawulokudonsa ongemuva ongu-48 Gbps.

Izilinganiso Zokudlulisa Iphakethe Zesendlalelo sesi-2 nesendlalelo sesi-3

Idatha kunethiwekhi iqukethe amaphakethe amaningi, ngalinye lidinga izinsiza ukuze zicutshungulwe. Izinga lokudlulisela phambili (i-throughput) libonisa ukuthi mangaki amaphakethe angaphathwa ngesikhathi esithile, ngaphandle kokulahlekelwa kwephakethe. Lesi silinganiso sifana nokugeleza kwethrafikhi ebhulohweni futhi siyimethrikhi yokusebenza ebalulekile ekushintsheni kwesendlalelo sesi-3.

Ukubaluleka Kokushintsha Isivinini Somugqa:
Ukuze kuqedwe izithiyo zenethiwekhi, amaswishi kufanele afinyelele ukushintsha kwesivinini somugqa, okusho ukuthi izinga lawo lokushintsha lifana nezinga lokudluliswa kwedatha ephumayo.

Ukubalwa kokusebenza:
I-Input (Mpps) = Inombolo Yezimbobo Ze-10 Gbps × 14.88 Mpps + Inombolo Yezimbobo Ze-1 Gbps × 1.488 Mpps + Inombolo Yezimbobo Ezingu-100 Mbps × 0.1488 Mpps.

Iswishi enezimbobo ezingama-24 1 Gbps kufanele ifinyelele ubuncane bokuphuma obungu-35.71 Mpps ukuze kube lula ukushintshaniswa kwamaphakethe okungavimbeli kahle.

I-Scalability: Ukuhlelela Ikusasa

I-scalability ihlanganisa izilinganiso ezimbili eziyinhloko:

Slot Bala

Inani lezikhala kuswishi linquma ukuthi mangaki amamojula asebenzayo kanye nesixhumi esibonakalayo angafakwa. Imojula ngayinye ithatha indawo, ngaleyo ndlela ikhawulela inombolo enkulu yezimbobo engakwazi ukusekela iswishi.

Izinhlobo zemojuli

Uhlu oluhlukahlukene lwezinhlobo zamamojula asekelwayo (isb, i-LAN, i-WAN, i-ATM) luthuthukisa ukuguquguquka kweswishi kuzidingo zenethiwekhi ezahlukahlukene. Isibonelo, amamojula e-LAN kufanele afake amafomu ahlukahlukene njenge-RJ-45 ne-GBIC ukuze ahlinzekele izidingo ezihlukahlukene zokuxhumana.

Ukushintsha Kwesendlalelo 4: Ukuthuthukisa Ukusebenza Kwenethiwekhi

Ukushintsha kwesendlalelo sesi-4 kusheshisa ukufinyelela ezinsizeni zenethiwekhi ngokungahloli nje amakheli e-MAC noma amakheli e-IP, kodwa nezinombolo zembobo ye-TCP/UDP yohlelo lokusebenza. Idizayinelwe ngokukhethekile izinhlelo zokusebenza ze-Intranet enesivinini esikhulu, ukushintsha kwesendlalelo sesi-4 akuthuthukisi nje kuphela ukulinganisa komthwalo kodwa futhi kunikeza izilawuli ezisekelwe ohlotsheni lohlelo lokusebenza kanye ne-ID yomsebenzisi. Lesi sikhundla sishintsha ungqimba 4 njengamanethi okuphepha afanelekile ngokumelene nokufinyelela okungagunyaziwe kumaseva azwelayo.

I-Module Redundancy: Ukuqinisekisa Ukwethembeka

I-redundancy ibalulekile ekugcineni inethiwekhi eqinile. Amadivayisi enethiwekhi, okuhlanganisa nokushintsha okuyinhloko, kufanele abe namandla okusebenzisa kabusha ukuze kuncishiswe isikhathi sokuphumula ngesikhathi sokuhluleka. Izingxenye ezibalulekile, njengamamojula okuphatha namandla, kufanele zibe nezinketho ze-faillover ukuze kuqinisekiswe ukusebenza kwenethiwekhi okuzinzile.

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Ukudideka Komzila: Ukuthuthukisa Ukuzinza Kwenethiwekhi

Ukusebenzisa izivumelwano ze-HSRP ne-VRRP kuqinisekisa ukulinganisa okusebenzayo komthwalo kanye nezipele ezishisayo zamadivayisi abalulekile. Esimeni sokuhluleka kweswishi phakathi kokusethwa kweswishi eyinhloko noma ekabili, isistimu ingashintshela ezinyathelweni zokulondoloza, iqinisekise ukuphindaphindeka okungenazihibe nokugcina ubuqotho benethiwekhi iyonke.

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Isiphetho

Ukufaka le mininingwane yeswishi ewumongo ohlwini lwakho lonjiniyela benethiwekhi kungathuthukisa kakhulu ukusebenza kahle kwakho nokusebenza ngempumelelo ekuphatheni ingqalasizinda yenethiwekhi. Ngokubamba imiqondo efana nomkhawulokudonsa wendiza engemuva, izilinganiso zokudlulisela iphakethe, ukukala, ukushintshwa kwesendlalelo sesi-4, ukuphindaphindeka, kanye nezimiso zephrothokholi zomzila, uzibeka ngaphambi kwejika emhlabeni oqhutshwa idatha ngokuya ngokuya.

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Control Cables

Okwe-BMS, BUS, Industrial, Instrumentation Cable.

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Inethiwekhi&Idatha, Ikhebula Le-Fiber-Optic, Intambo Yesiphesheli, Amamojula, I-Faceplate

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Isikhathi sokuthumela: Jan-16-2025