Ngqo-ngaphakathi
Ngokuthe tye-nge-ethernet switches inokuqondwa njengemigca ye-matrix ye-rissix enemigca ePrissiscross phakathi kwamabuko. Xa ipakethi yedatha ifunyenwe kwizibuko legalelo, intloko yepakethi itshekishwe, idilesi yendawo yendawo efumanekayo ifunyenwe, itafile yokukhangela yangaphakathi iqalile, kwaye i-portmer yangaphakathi yokukhangela iguqulwe. Ipakethi yedatha iqhagamshelwe ekungeneni kwegalelo kunye nemveliso, kwaye ipakethi yedatha iqhagamshele ngqo kwizibuko elihambelana ngqo nokufezekisa umsebenzi wokutshintsha. Kuba akukho mfuneko yokuba igcinwe, ukulibaziseka kuncinci kakhulu kwaye ukutshintshelwa kukhawuleza, nto leyo. Ukungancediyo kukuba ukusukela kumxholo wepakethi yedatha akugcinwanga yi-Ethernet Swingt, akunakwenzeka ukuba ujonge ukuba ingaba iPakethi yeDatha edlulisiweyo ayilunganga, kwaye amandla okufunyanwa kwempazamo awanakubonelelwa. Kuba akukho phunga, igalelo / izibuko lezantya ezahlukeneyo alinakuqhagamshelwa ngokuthe ngqo, kwaye kulula ukulahleka.
IVenkile kwaye phambili
IVenkile kunye neNdlela yokuThengisa yimowudi yesicelo kwicandelo leenethiwekhi zekhompyuter. Iqala ivenkile yedatha yedatha yemveliso, emva koko yenza i-CRC (i-CYCCICADC (i-CYCCICCARCICALD (ikhuphe idilesi yendawo yedatha emva kokuyitshintsha ipakethi yepakethi yokuthumela ipakethi yokukhangela. Ngenxa yoku, ukulibaziseka kokugcina kunye nokudlulisela phambili ekuqhubekeni kwedatha kuyinto enkulu, kodwa kuyisitshiwa bayo, kodwa kungayifumana i-pakets ngendlela engeyiyo i-switch kunye nokuphucula ukusebenza kwenethiwekhi. Eyona nto ibaluleke kakhulu kukuba inokuxhasa ukuguqulwa phakathi kwamazibuko okwenziwa ngesantya esahlukileyo kunye nokugcina umsebenzi wentsebenzo phakathi kwezantya eziphezulu kunye nezantya eziphantsi.
Ukuhlukaniswa kwedwa
Esi sisicombulo phakathi kwesibini sokuqala. Ijonga ukuba ubude bepakethi yedatha banele kwii-Byte ezingama-64. Ukuba ingaphantsi kwe-64 yee-Byte, kuthetha ukuba yipakethi ye-fake kwaye ipakethi ilahliwe; Ukuba ingaphezulu kwama-64 ee-Byte, ipakethi ithunyelwe. Le ndlela ayiboneleli ngokuqinisekiswa kwedatha. Isantya sokuqhubela kwedatha sikhawuleza kunokugcinwa kunye nokudlulisela, kodwa icothise ngakumbi kunokupasa ngokuthe ngqo. Ukwazisa ukutshintshwa kwe-wirschman switch switch.
Kwangelo xesha, ukutshintshwa kwe-HRSCHman kungadlulisela idatha phakathi kwamaPrikeni amaninzi. Isibuko ngasinye sinokuthathwa njengendawo ezimeleyo yenethiwekhi yomzimba (Qaphela: icandelo lenethiwekhi engeyiyo), kunye nezixhobo zenethiwekhi ezinxulumene nazo zinokonwabela yonke i-bandwidth ngokuzimeleyo ngaphandle kokukhuphisana nezinye izixhobo. Xa i-node ithumela idatha kwi-node d, i-node b inokuthumela idatha kwi-Node ye-C ngexesha elifanayo, kwaye zombini zinebhendi epheleleyo yenethiwekhi kwaye inonxibelelwano oluqinisekileyo lomnatha. Ukuba i-10Mbps Ethernet Switt isetyenzisiwe, itrafikhi iyonke i-switch ilingana ne-2x10MBPS = 20MBPS. Xa i-10MBps esetyenziselwa i-Hub isetyenzisiwe, itrafikhi ye-hub ayizukudlula i-10Mbps.
Ngamafutshane,I-HIRSCHman ShitchIsixhobo senethiwekhi esinokugqiba umsebenzi wokuchaza kunye nokudlulisela iifreyimu zedatha esekwe ekuqondeni kwedilesi ye-MAC. Ukutshintsha kwe-Hirchman kunokufunda iidilesi ze-MAC kwaye uzigcine kwitafile yedilesi yangaphakathi, kwaye ngokuthe ngqo ufikelele kwithagethi yokutshintshwa kwethutyana phakathi komsunguli kunye nomsebenzi ojolise kwidatha.
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