Ukutshintsha ligama eliqhelekileyo letekhnoloji ethumela ulwazi ukuba ludluliselwe kumzila ohambelanayo ohlangabezana neemfuno ngesixhobo semanuwali okanye esizenzekelayo ngokweemfuno zokuhambisa ulwazi kuzo zombini iziphelo zonxibelelwano. Ngokwezikhundla ezahlukeneyo zokusebenza, inokwahlulwa ibe yiswitshi yenethiwekhi yendawo ebanzi kunye nokutshintsha kwenethiwekhi yendawo. Ukutshintsha kwenethiwekhi yendawo ebanzi luhlobo lwezixhobo ezigqibezela umsebenzi wokutshintshiselana ngolwazi kwinkqubo yonxibelelwano. Ngoko ke, zeziphi iindlela zokudlulisela ukutshintshwa? Okulandelayo, masilandeleItekhnoloji yeJHAukufunda ngakumbi ngayo!

Indlela yokudlulisa:
1.Sika-ngokutshintsha
2.Gcina-kwaye-Phambili ukutshintsha
3.I-fragment-free switching

Eli nqaku ligxininisa kuphela kwiindlela zokuqala nezesibini.

Zomibini ezinqamlekileyo zokutshintshwa kunye nokugcina ivenkile-kunye-phambili yindlela yokudlulisa i-L2, kwaye izicwangciso zabo zokudlulisa zisekelwe kwindawo yokuya kuyo i-MAC (DMAC). Kule nkalo, akukho mahluko phakathi kweendlela ezimbini zokuthumela.
Umehluko omkhulu phakathi kwabo xa bejongene nokuthunyelwa, oko kukuthi, indlela umtshintshi ejongene ngayo nobudlelwane phakathi kwenkqubo yokufumana kunye nenkqubo yokuthunyelwa kwepakethi yedatha.

Uhlobo lokugqithisela:
1. Sika
Iswitshi ye-Ethernet ye-Cut Through's inokuqondwa njengomgca we-matrix wefowuni yefowuni ewela izibuko ngalinye. Xa ibona ipakethe yedatha kwizibuko logalelo, ijonga iheader yepakethe, ifumana idilesi yendawo yokufikela yepakethi, isebenze itafile yokukhangela eguquguqukayo yangaphakathi ukuyiguqulela kwizibuko eliphumayo elihambelanayo, idibanisa ekudibaneni kwegalelo kunye nemveliso, kwaye igqithisa ipakethe yedatha ngqo kwizibuko elihambelanayo liqonda umsebenzi wokutshintsha. Ekubeni akukho kugcinwa kuyadingeka, ukulibaziseka kuncinci kakhulu kwaye utshintshiselwano lukhawuleza kakhulu, oluyinzuzo yalo.

Ukungalungi kwayo kukuba ngenxa yokuba umxholo wepakethi yedatha awugcinwanga ngokutshintsha kwe-Ethernet, ayikwazi ukujonga ukuba ipakethe yedatha edlulisiweyo ayilunganga, kwaye ayikwazi ukunika amandla okubona impazamo. Ngenxa yokuba akukho buffer, i-input/output ports enezantya ezahlukeneyo azikwazi ukudityaniswa ngokuthe ngqo, kwaye iipakethi zilahleka lula.

2. Gcina-kwaye-Phambili ukutshintsha
Indlela yokugcina nokudlulisa yeyona ndlela isetyenziswa kakhulu kwindawo yothungelwano lwekhompyutha. Ihlola ipakethe yedatha ye-port yongeniso, ikhupha idilesi yendawo yepakethi yedatha emva kokucubungula ipakethe yephutha, kwaye iyiguqulele kwi-port yokuphuma ukuthumela ipakethi ngetafile yokujonga. Ngenxa yoko, indlela yokugcina kunye nokuhamba phambili inokulibaziseka okukhulu ekuqhutyweni kwedatha, okuyintsilelo yayo, kodwa inokwenza ukufumanisa impazamo kwiipakethi zedatha ezifaka ukutshintshwa kunye nokuphucula ngokufanelekileyo ukusebenza kwenethiwekhi. Kubaluleke kakhulu ukuba inokuxhasa ukuguqulwa phakathi kwamachweba eezantya ezahlukeneyo kunye nokugcina intsebenziswano phakathi kwamachweba anesantya esiphezulu kunye namachweba aphantsi.

3. Isiqwenga sasimahla
Esi sisisombululo phakathi kwezi zibini zokuqala. Ihlola ukuba ubude bepakethi yedatha yanele kwi-bytes ye-64, ukuba ingaphantsi kwama-bytes angama-64, ebonisa ukuba ipakethi yenkohliso, uze ulahle ipakethi; ukuba ingaphezulu kwe-64 bytes, thumela ipakethi. Le ndlela nayo ayinikezeli ukuqinisekiswa kwedatha. Isantya sokucwangcisa idatha sikhawuleza kunokugcina-kunye-phambili, kodwa sicotha kunokudlula ngokuthe ngqo.

Ingaba ukuthunyelwa ngokuthe ngqo okanye ukuthunyelwa kwevenkile, yindlela yokudlulisa imigangatho emibini, kwaye isicwangciso sabo sokudlulisela phambili sisekelwe kwindawo yokusingwa ye-MAC (DMAC). Akukho mahluko phakathi kweendlela ezimbini zokudlulisela kulo mba. Umehluko omkhulu phakathi kwabo xa bephethe ukuthunyelwa, oko kukuthi, indlela umtshintshi ephatha ngayo ubudlelwane phakathi kwenkqubo yokufumana kunye nenkqubo yokuthunyelwa kwepakethi yedatha.