Menene keɓewar jiki:
Abin da ake kira "keɓancewar jiki" yana nufin cewa babu hulɗar bayanan juna tsakanin cibiyoyin sadarwa biyu ko fiye, kuma babu lambar sadarwa a Layer na zahiri / Layer link Layer / IP Layer. Manufar keɓewar jiki shine don kare kayan masarufi da hanyoyin sadarwa na kowace hanyar sadarwa daga bala'o'i, ɓarna na mutum da hare-haren satar waya. Misali, keɓewar hanyar sadarwa ta zahiri da na jama'a na iya tabbatar da cewa ba a kai wa cibiyar sadarwar bayanai hari daga Intanet ba.

Menene keɓewar hankali:
Mai keɓe mai ma'ana kuma yanki ne na keɓe tsakanin cibiyoyin sadarwa daban-daban. Har yanzu akwai hanyoyin haɗin yanar gizon bayanai akan Layer na zahiri / bayanan haɗin yanar gizo a keɓance ƙarshen, amma ana amfani da hanyoyin fasaha don tabbatar da cewa babu tashoshi na bayanai a keɓewar iyakar, wato, a hankali. Keɓewa, keɓancewar ma'ana ta hanyar sadarwa ta hanyar sadarwa / masu sauyawa akan kasuwa gabaɗaya ana samun su ta hanyar rarraba ƙungiyoyin VLAN (IEEE802.1Q);

VLAN yayi daidai da yankin watsa shirye-shirye na Layer na biyu (Layer link Layer) na samfurin tunani na OSI, wanda zai iya sarrafa guguwar watsa shirye-shirye a cikin VLAN. Bayan rarraba VLAN, saboda raguwar yankin watsa shirye-shirye, an gane keɓantawar tashoshin cibiyar sadarwar VLAN guda biyu daban-daban.

Amfanin keɓewar jiki akan keɓewar hankali:
1. Kowace hanyar sadarwa tashar ce mai zaman kanta, ba ta da tasiri a kan juna, kuma ba ta hulɗa da bayanai;
2. Kowane cibiyar sadarwa yana da tashar tashar tashar tashar mai zaman kanta, yawan bandwidth ya shigo, yawan bandwidth yana cikin tashar watsawa;