Kowane mai masaukin cibiyar sadarwa, wurin aiki ko uwar garken yana da adireshin IP na kansa da abin rufe fuska na subnet.Lokacin da mai watsa shiri ya yi magana da uwar garken, bisa ga adireshin IP na kansa da abin rufe fuska, da kuma adireshin IP na uwar garken, ƙayyade ko uwar garken yana cikin ɓangaren cibiyar sadarwa ɗaya kamar kansa:

1. Idan an tabbatar da kasancewa cikin sashin cibiyar sadarwa iri ɗaya, kai tsaye za ta sami adireshin MAC na ɗayan ta hanyar ka'idar Resolution Protocol (ARP), sannan ta cika adireshin MAC na ɗayan zuwa filin adireshin MAC ɗin da aka nufa na Ethernet. frame header, kuma aika saƙon fita.Musanya Layer biyu yana fahimtar sadarwa;

2. Idan an ƙaddara zama a cikin wani yanki na cibiyar sadarwa daban-daban, mai watsa shiri zai yi amfani da ƙofa ta atomatik don sadarwa.Mai watsa shiri ya fara nemo adireshin MAC na ƙofar da aka saita ta hanyar ARP, sannan ya cika adireshin MAC na ƙofar (ba adireshin MAC na abokin gaba ba, saboda mai watsa shiri yana tunanin abokin sadarwar ba shine mai masaukin gida ba) zuwa cikin MAC. filin adireshin adireshin firam ɗin Ethernet , Aika saƙon zuwa ƙofa, kuma gane sadarwa ta hanyar layi-layi uku.