Ukushintsha igama elijwayelekile lobuchwepheshe obuthumela imininingwane ukuthi idluliselwe emzileni ohambisanayo ohlangabezana nezidingo ngemishini eyenziwa ngesandla noma ezenzakalelayo ngokwezidingo zokudlulisa imininingwane kuzo zombili iziphetho zokuxhumana. Ngokuya ngezikhundla ezihlukene zokusebenza, ingahlukaniswa ngokushintsha kwenethiwekhi yendawo ebanzi kanye nokushintsha kwenethiwekhi yendawo. Ukushintshwa kwenethiwekhi yendawo ebanzi kuwuhlobo lwemishini eqeda umsebenzi wokushintshana ngolwazi ohlelweni lokuxhumana. Ngakho-ke, yiziphi izindlela zokudlulisela iswishi? Okulandelayo, asilandeleI-JHA Technologyukuze ufunde kabanzi ngayo!

Indlela yokudlulisela:
1.Sika-ngokusebenzisa ukushintsha
2.Ukushintsha kwesitolo-no-Phambili
3.Ukushintshwa okunganaziqephu

Lesi sihloko sigxile kuphela ezindleleni zokuqala nezesibili.

Kokubili ukushintsha okunqamulelayo kanye nokushintsha kwesitolo nokuya phambili kuyindlela yokudlulisela i-L2, futhi amasu akho okudlulisela phambili asekelwe endaweni okuyiwa kuyo i-MAC (DMAC). Mayelana nalokhu, akukho mehluko phakathi kwezindlela ezimbili zokudlulisela phambili.
Umehluko omkhulu phakathi kwazo yilapho zibhekana nokudlulisela phambili, okungukuthi, ukuthi iswishi ibhekana kanjani nobudlelwano phakathi kwenqubo yokwamukela kanye nenqubo yokudlulisela phambili yephakethe ledatha.

Uhlobo lokudlulisela:
1. Sika
Iswishi ye-Ethernet ye-Cut Through ingaqondwa njengeswishi yocingo ye-matrix ewela imbobo ngayinye. Uma ithola iphakethe ledatha endaweni yokufaka, ihlola unhlokweni wephakethe, ithola ikheli lendawo okuyiwa kuyo, yenza kusebenze ithebula lokubheka eliguquguqukayo langaphakathi ukuze iliguqule libe yimbobo yokukhiphayo ehambisanayo, ixhuma empambanweni yokokufaka nokukhiphayo, futhi idlulisela iphakethe ledatha ngqo Imbobo ehambisanayo ibona umsebenzi wokushintsha. Njengoba kungekho sitoreji esidingekayo, ukubambezeleka kuncane kakhulu futhi ukushintshaniswa kuyashesha kakhulu, okuyinzuzo yakho.

Ububi bayo ukuthi ngenxa yokuthi okuqukethwe kwephakethe ledatha akulondolozwanga ngokushintsha kwe-Ethernet, ayikwazi ukuhlola ukuthi iphakethe ledatha elidlulisiwe alilungile yini, futhi alikwazi ukuhlinzeka ngamakhono okuthola iphutha. Ngenxa yokuthi asikho isilondolozi, izimbobo zokufaka/zokukhiphayo ezinesivinini esihlukile azikwazi ukuxhunywa ngokuqondile, futhi amaphakethe alahleka kalula.

2. Ukushintsha kwesitolo nokudlulisa
Indlela yesitolo-nokudlulisela iyindlela esetshenziswa kakhulu emkhakheni wamanethiwekhi amakhompyutha. Ihlola iphakethe ledatha yembobo yokufaka, ikhiphe ikheli lendawo yephakethe ledatha ngemva kokucubungula iphakethe lephutha, futhi iliguqulele endaweni yokukhipha ukuze ithumele iphakethe ngetafula lokubheka. Ngenxa yalokhu, indlela yokulondoloza nokudlulisela phambili inokulibaziseka okukhulu ekucutshungulweni kwedatha, okuwukushiyeka kwayo, kodwa ingakwazi ukubona iphutha kumaphakethe wedatha afaka iswishi futhi ithuthukise ngempumelelo ukusebenza kwenethiwekhi. Kubaluleke kakhulu ukuthi ikwazi ukusekela ukuguqulwa phakathi kwamachweba wesivinini esihlukile futhi igcine ukubambisana phakathi kwamachweba anesivinini esikhulu namachweba anesivinini esiphansi.

3. I-fragment Free
Lesi yisixazululo phakathi kokubili kokuqala. Ihlola ukuthi ubude bephakethe ledatha banele ngamabhayithi angu-64, uma bungaphansi kwamabhayithi angu-64, okubonisa ukuthi iphakethe lomgunyathi, bese ulahla iphakethe; uma likhulu kunamabhayithi angama-64, thumela iphakethe. Le ndlela futhi ayinikezi ukuqinisekiswa kwedatha. Isivinini sayo sokucubungula idatha siyashesha ukwedlula isitolo-futhi-phambili, kodwa sihamba kancane kunokudlula oqondile.

Kungakhathaliseki ukuthi ukudlulisela phambili okuqondile noma ukudlulisela phambili kwesitolo, kuyindlela yokudlulisela izendlalelo ezimbili, futhi isu labo lokudlulisela phambili lisekelwe endaweni okuyiwa kuyo i-MAC (DMAC). Awukho umehluko phakathi kwezindlela ezimbili zokudlulisela phambili kulokhu. Umehluko omkhulu phakathi kwazo yilapho ephatha ukudlulisela phambili, okungukuthi, indlela iswiwi esiphatha ngayo ubudlelwano phakathi kwenqubo yokwamukela kanye nenqubo yokudlulisela phambili yephakethe ledatha.