Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Masu tsara cibiyoyin sadarwa na farko sukan rarraba LANs na zahiri tare da manufar rage girman yankin haɗuwar Ethernet, don haka inganta aikin. Lokacin da Ethernet sauya sanya wannan wani ba batun (saboda kowane canzawa tashar jiragen ruwa ne a karo yankin), da hankali ya juya zuwa rage girman data link Layer watsa yankin. An fara amfani da VLANs don raba yankuna da yawa na watsa shirye-shirye a cikin matsakaiciyar matsakaici. Hakanan VLAN na iya yin amfani da shi don ƙuntata damar yin amfani da albarkatun cibiyar sadarwa ba tare da la'akari da topology na zahiri na cibiyar sadarwar ba. VLANs suna aiki a layin haɗin bayanai na samfurin OSI. Masu gudanarwa galibi suna tsara VLAN don yin taswira kai tsaye zuwa cibiyar sadarwar IP, ko subnet, wanda ke ba da bayyanar da ke tattare da layin cibiyar sadarwa. Gabaɗaya, VLANs a cikin ƙungiya ɗaya za a ba su kewayon adiresoshin cibiyar sadarwa daban-daban waɗanda ba sa haɗuwa. Wannan ba buƙata ce ta VLANs ba. Babu matsala tare da VLANs daban-daban ta amfani da daidaitattun adiresoshin da aka rufe (misali biyu VLANs kowannensu yana amfani da cibiyar sadarwar masu zaman kansu 192.168.0.0/16). Duk da haka, ba shi yiwuwa a tsara bayanai tsakanin cibiyoyin sadarwa guda biyu tare da adiresoshin da suka haɗu ba tare da sake yin amfani da IP ba, don haka idan makasudin VLANs shine rarraba wani babban cibiyar sadarwa na ƙungiya, dole ne a yi amfani da adiresoshin da ba su haɗu ba a kowane VLAN daban.  Tambaya: Menene masu zanen cibiyar sadarwa na farko suka yi?
sau da yawa segmented jiki LANs da nufin rage girman da Ethernet karo yankin