Utshintsho lweswitshi ngeendlela ezintathu ezilandelayo

1) Ukuchaneka ngqo:

Iswitshi ye-Ethernet ethe tye inokuqondwa njengeswitshi yefowuni ye-line matrix ene-crossover phakathi kwee-ports. Xa ibona ipakethi yedatha kwi-input port, ijonga i-packet header yepakethi, ifumane idilesi yendawo ekuyiwa kuyo yepakethi, iqalise i-internal dynamic lookup table ukuze iyiguqule ibe yi-output port ehambelanayo, iqhagamshela kwindawo yokudibana kwe-input kunye ne-output, kwaye idlulise ipakethi yedatha ngqo kwi-. I-port ehambelanayo iyazifezekisa umsebenzi wokutshintsha.

2) Gcina kwaye uthumele:

Indlela yokugcina nokuthumela phambili yeyona ndlela isetyenziswa kakhulu kwicandelo leenethiwekhi zekhompyutha. Iqala ngokugcina iipakethi zedatha zezibuko lokufaka, ize emva koko yenze uhlolo lwe-CRC (Cyclic Redundancy Check). Emva kokucubungula iipakethi zempazamo, ikhupha idilesi yendawo ekuyiwa kuyo iphakheji yedatha, ize iyiguqule ibe zizibuko lokukhupha ngetafile yokukhangela ukuze ithumele iphakheji.

3) Ukwahlulwa kweqhekeza:

Esi sisisombululo phakathi kwezimbini zokuqala. Sijonga ukuba ubude bepakethe yedatha buyanele na ukuya kwii-bytes ezingama-64. Ukuba ingaphantsi kwee-bytes ezingama-64, oko kuthetha ukuba yipakethe yobuxoki, ize ipakethe ilahlwe; ukuba ingaphezulu kwee-bytes ezingama-64, ipakethe iyathunyelwa. Le ndlela ayiboneleli ngokuqinisekiswa kwedatha. Isantya sayo sokucubungula idatha sikhawuleza kunokugcina nokudlulisela phambili, kodwa sicotha kunokusika.