Ngokuthuthuka okujwayelekile kanye nokusetshenziswa kobuchwepheshe benethiwekhi, ukuthuthukiswa kwamaswishi nakho kube nezinguquko ezinkulu. Amaswishi okuqala athuthukiswe kusukela ekushintsheni okulula kakhulu kuya kumaswishi engqimba engu-2, bese kusuka ekushintsheni kwesendlalelo sesi-2 kuya kumaswishi angu-3. Ngakho, yini aIswishi ye-Layer 3?

Ungqimba 3 amaswishiempeleni ziwubuchwepheshe bokushintsha u-Layer 2 + Ubuchwepheshe bokudlulisa ungqimba 3. Akusho ukuthi kukhona "izingqimba ezintathu" zokushintshwa. Aungqimba 3 shintshaiyiswishi enemisebenzi ethile yerutha. Inhloso ebaluleke kakhulu yeIswishi ye-Layer 3ukwenza lula ukushintshana kwedatha ngaphakathi kwe-LAN enkulu. Umsebenzi womzila enawo futhi uhlinzeka ngezinsizakalo zale njongo, futhi ingahanjiswa kanye bese idluliswa izikhathi ezimbalwa.

Ukushintsha ubuchwepheshe ngomqondo wendabuko kusebenza kungqimba lwesibili lwemodeli evamile yenethiwekhi ye-OSI—ungqimba lwesixhumanisi sedatha, kuyilapho ubuchwepheshe bokushintsha obunezendlalelo ezintathu buqeda ukudluliselwa kwephakethe ledatha ngesivinini esikhulu engxenyeni yesithathu yemodeli yenethiwekhi. Izixhumanisi ngezikhathi ezithile ezifana nokudlulisa iphakethe ledatha ziqedwa ngokushesha ngehadiwe, kodwa izinsiza ezifana nokuthuthukiswa kolwazi lomzila, ukugcinwa kwetafula lomzila, ukubala umzila, nokuqinisekisa umzila kuqedwa isofthiwe. Ayikwazi ukubona kuphela umsebenzi womzila wenethiwekhi, kodwa futhi iqinisekisa ukusebenza kwenethiwekhi okungcono kakhulu kwezimo zenethiwekhi ezihlukene.