Menene LAN?
LAN yana nufin Cibiyar Sadarwar Yanki.
LAN tana wakiltar yankin watsa shirye-shirye, wanda ke nufin cewa duk membobi na LAN zasu karɓi fakitin watsa shirye-shiryen da kowane memba ya aiko.Membobin LAN suna iya magana da juna kuma suna iya tsara hanyoyin kansu don kwamfutoci daga masu amfani daban-daban don yin magana da juna ba tare da shiga Intanet ba.
1) Mafi mahimmancin shimfidar LAN
Kamar yadda aka nuna a cikin hoton da ke sama, shine mafi mahimmancin shimfidar LAN.Idan akwai na'urori daban-daban, kuna buƙatar samun adireshin MCA na ɗayan.
Cikakken misali: A aika bayanai zuwa C, amma A bai san MAC address na C. A wannan lokaci, ta hanyar ARP yarjejeniya (Address Resolution Protocol;) Don samun MAC address na C, A farko watsa wani ARP bukatar dauke da adireshin IP mai niyya zuwa duk na'urorin da ke da alaƙa da cibiyar.Bayan karɓar watsa shirye-shiryen, C yana mayar da adireshin MAC zuwa A, kuma wasu na'urori suna watsar da bayanin.Ya zuwa yanzu, an kafa yanayin shirye-shiryen sadarwa tsakanin na'urori.Za a iya sauƙaƙe tsarin da ke sama kamar haka: A - ARP Protocol: ya warware adireshin MAC na IP - C zai dawo da adireshin MAC zuwa
Na'urorin da aka haɗa a cikin cibiyar suna cikin yanki ɗaya na rikici da yankin watsa shirye-shirye.Domin akwai sauyawa ɗaya kawai, yankin rikici shine yankin watsa shirye-shirye.Sauƙaƙan fahimtar wannan shimfidar wuri shine cewa na'ura ɗaya ce kawai zata iya aika sigina a lokaci guda kuma wasu na'urori zasu iya karɓar siginar.
2) Cibiyar ita ce na'urar Layer na jiki, wato, Layer na farko na OSI.Ana amfani da shi musamman don karɓa, maidowa, haɓakawa, da aika sigina.Lokacin da aka yi amfani da murɗaɗɗen nau'i-nau'i da fiber na gani don watsa sigina, tare da karuwa a nesa, siginar za su yi rauni kuma suna haifar da murdiya.Karɓar siginar zai sa ba a gane bayanan watsawa ba, kuma a ƙarshe ya haifar da katsewar sigina.Tare da taimakon cibiya, siginar na iya tafiya mai nisa;A lokaci guda kuma, cibiyar tana da hanyoyin sadarwa da yawa, waɗanda zasu iya faɗaɗa adadin tashoshi da girman LAN.
Matsalar: Duk na'urorin da ke kan cibiya ɗaya suna raba bandwidth.Idan adadin na'urori sun yi yawa, zai haifar da cunkoson haɗin gwiwa kuma, a lokuta masu tsanani, guguwar watsa shirye-shirye.
Ci gaba: Ana iya raba babban yanki na rikici zuwa ƙananan ƙananan rikice-rikice ta hanyar amfani da sauyawa, wanda zai iya rage iyakokin yankin rikici kuma ya rage cunkoson bayanai.
Abin da ke sama shine bayanin ilimin ONU LAN wanda Shenzhen HDV Phoelectron Technology Co., Ltd ya kawo muku. Shenzhen Haidiwei Optoelectronics Technology Co., Ltd.kayan aikin sadarwa.