Kai tsaye
Ana iya fahimtar makullan Ethernet kai tsaye a matsayin makullan layi tare da layukan giciye tsakanin tashoshin jiragen ruwa. Lokacin da aka gano fakitin bayanai a tashar shigarwa, ana duba kan fakitin, an sami adireshin wurin da fakitin zai kai, an fara teburin bincike mai motsi na ciki, kuma an canza tashar fitarwa mai dacewa. Ana haɗa fakitin bayanai a mahadar shigarwa da fitarwa, kuma fakitin bayanai yana haɗi kai tsaye zuwa tashar da ta dace don cimma aikin sauyawa. Saboda ba a buƙatar adana shi ba, jinkirin yana da ƙanƙanta kuma sauyawa yana da sauri sosai, wanda shine fa'idarsa. Rashin amfani shine tunda abubuwan da ke cikin fakitin bayanai ba a adana su ta hanyar makullin Ethernet ba, ba zai yiwu a duba ko fakitin bayanai da aka watsa ba daidai ba ne, kuma ba za a iya samar da ikon gano kurakurai ba. Saboda babu cache, ba za a iya haɗa tashoshin shigarwa/fitarwa na gudu daban-daban kai tsaye ba, kuma yana da sauƙin rasa.
Ajiye kuma a tura
Yanayin ajiya da gaba yanayi ne na aikace-aikace a fagen hanyoyin sadarwa na kwamfuta. Da farko yana adana fakitin bayanai na tashar shigarwa, sannan yana yin binciken CRC (tabbatar da lambar sake dawowa ta cyclic), yana cire adireshin wurin da fakitin bayanai zai je bayan sarrafa fakitin kuskuren, sannan ya mayar da shi tashar fitarwa don aika fakitin ta cikin teburin bincike. Saboda haka, jinkirin ajiya da tura bayanai a cikin sarrafa bayanai yana da girma, wanda shine gazawarsa, amma yana iya gano fakitin bayanai ba daidai ba da ke shiga maɓallin kuma yana inganta aikin cibiyar sadarwa sosai. Musamman mahimmanci shine yana iya tallafawa sauyawa tsakanin tashoshin jiragen ruwa masu saurin gudu daban-daban da kuma kula da aikin haɗin gwiwa tsakanin tashoshin jiragen ruwa masu saurin gudu da tashoshin jiragen ruwa masu ƙarancin gudu.
Warewar guntu
Wannan mafita ce tsakanin na farko guda biyu. Yana duba ko tsawon fakitin bayanai ya isa ga baiti 64. Idan bai kai baiti 64 ba, yana nufin fakitin karya ne kuma an jefar da fakitin; idan ya fi baiti 64, ana aika fakitin. Wannan hanyar ba ta samar da tabbatar da bayanai ba. Saurin sarrafa bayanai ya fi sauri fiye da ajiya da turawa, amma ya fi jinkiri fiye da wucewa kai tsaye. Gabatar da sauya makunnin Hirschman.
A lokaci guda, maɓallin Hirschman zai iya aika bayanai tsakanin tashoshin jiragen ruwa da yawa. Kowace tashar jiragen ruwa za a iya ɗaukarta a matsayin ɓangaren cibiyar sadarwa ta zahiri mai zaman kanta (lura: ɓangaren cibiyar sadarwa mara IP), kuma na'urorin cibiyar sadarwa da aka haɗa da ita za su iya jin daɗin duk bandwidth ɗin daban-daban ba tare da yin gogayya da wasu na'urori ba. Lokacin da lambar A ta aika bayanai zuwa lambar D, lambar B za ta iya aika bayanai zuwa lambar C a lokaci guda, kuma duka suna da cikakken bandwidth na cibiyar sadarwa kuma suna da nasu haɗin yanar gizo. Idan aka yi amfani da maɓallin Ethernet na 10Mbps, jimlar zirga-zirgar maɓallin daidai yake da 2x10Mbps = 20Mbps. Lokacin da aka yi amfani da HUB na 10Mbps da aka raba, jimlar zirga-zirgar HUB ba za ta wuce 10Mbps ba.
A takaice dai,Canjin Hirschmanna'urar sadarwa ce da za ta iya kammala aikin tattara bayanai da tura su bisa ga gane adireshin MAC. Maɓallin Hirschman zai iya koyon adiresoshin MAC kuma ya adana su a cikin teburin adireshin ciki, kuma ya isa ga abin da ake nufi kai tsaye ta hanyar sauyawa ta wucin gadi tsakanin mai farawa da mai karɓar bayanai.
Lokacin Saƙo: Disamba-12-2024