1. Matakan aiki daban-daban:

Layer 2 sauyaaiki a Layer mahada bayanai, kumaLayer 3 canzawaaiki a cibiyar sadarwa Layer. Maɓallin Layer 3 ba wai kawai cimma babban saurin isar da fakitin bayanai ba, har ma yana samun kyakkyawan aikin cibiyar sadarwa gwargwadon yanayin cibiyar sadarwa daban-daban.

2. Ka'idar ta bambanta:

Ka'idar sauyawa ta Layer 2 ita ce lokacin da mai kunnawa ya karɓi fakitin bayanai daga wani tashar tashar jiragen ruwa, zai fara karanta adireshin MAC na tushen da ke cikin fakitin, sannan ya karanta adireshin MAC ɗin da aka nufa a cikin fakitin, sannan ya duba tashar da ta dace a ciki. teburin adireshin. , idan akwai tashar tashar jiragen ruwa daidai da adireshin MAC na manufa a cikin tebur, kwafi fakitin bayanan kai tsaye zuwa wannan tashar jiragen ruwa. Ka'idar sauyawar Layer 3 tana da sauƙi mai sauƙi, wato, ana musayar hanya ɗaya sau da yawa. Gabaɗaya magana, ita ce hanya ta farko-zuwa makoma. Ana iya musayar tushen zuwa inda ake nufi da sauri.

3. Ayyuka daban-daban:

Maɓalli na Layer 2 yana dogara ne akan samun damar adireshin MAC, kawai yana tura bayanai, kuma ba za a iya daidaita shi da adireshin IP ba, yayin da Layer 3 ya haɗa fasahar sauyawa Layer 2 tare da aikin turawa Layer 3, wanda ke nufin cewa Layer 3 switch ne. dangane da Layer 2 canza. Ana ƙara aikin routing zuwa abubuwan da ke sama, kuma ana iya daidaita adiresoshin IP na vlan daban-daban, kuma ana iya aiwatar da sadarwa tsakanin vlans ta hanyar zirga-zirgar matakai uku.

4. Aikace-aikace daban-daban:

Layer 2 switches ana amfani da su ne a Layer access Layer da aggregation Layer, yayin da Layer 3 switches akasari ake amfani da shi a babban Layer na cibiyar sadarwa, amma kuma akwai ƴan ƙaramar maɓalli na Layer 3 da ake amfani da su a cikin aggregation Layer.

5. Sharuɗɗan tallafi sun bambanta:

Maɓallai na Layer 2 suna goyan bayan Layer na zahiri da ka'idojin Layer na hanyar haɗin bayanai, kamar maɓalli na Ethernet da maɓallin Layer 2. HUB yana da ayyuka iri ɗaya, yayin da Layer 3 ke sauyawa yana goyan bayan Layer na zahiri, Layer mahada bayanai da ka'idojin Layer na cibiyar sadarwa.