LAN yowonjezera (Local Area Network) ndiwomveka bwino lomwe lingagwirizanitse pamodzi magulu a zipangizo zochokera ku LAN zosiyana. Mabungwe akuluakulu a makompyuta a makampani nthawi zambiri amapanga VLAN kuti azigawitsanso maukonde awo kuti azitha kuyendetsa bwino magalimoto.
Mitundu yosiyanasiyana yamagetsi amathandizira ma LAN omwe akuphatikizapo Ethernet ndi Wi-Fi .
Ubwino wa VLAN
Mukakonzekera bwino, ma LAN amatha kusintha machitidwe onse otanganidwa. VLAN ndi cholinga chogwirizanitsa pamodzi makasitomala apakompyuta omwe amalumikizana nthawi ndi nthawi. Msewu pakati pa zipangizo zogawanika pamagulu awiri kapena angapo akufunika kuti azigwiritsidwa ntchito ndi makina oyendetsa makompyuta , koma ndi VLAN kuti magalimoto angasamalidwe bwino kwambiri ndi kusintha kwa makina m'malo.
VLAN imabweretsanso zopindulitsa zowonjezera pa intaneti zazikulu mwa kulola kulamulira kwakukulu pa zipangizo zomwe zimakhala ndi zowonjezerako. Ma Wi-Fi ogulitsa alendo nthawi zambiri amagwiritsidwa ntchito pogwiritsa ntchito zipangizo zopanda pakompyuta zomwe zimathandiza ma VLAN.
VLAN Zokhazikika ndi Zamphamvu
Olamulira a pafupipafupi nthawi zambiri amatanthawuza ma VLAN otsika ngati "VLAN zogwiritsira ntchito." VLAN yolimba imadalira wolamulira kuti apange maofesi amodzi pamasitomala osinthira ku makina. Ziribe kanthu kuti chipangizo chomwe chimaphatikizapo m'tchire limenelo, chimakhala membala wa makina omwe amadziwika kale.
Kukonzekera kwa VLAN kumapangitsa wotsogolera kufotokozera umembala wovomerezeka malingana ndi zida za zipangizo zokha osati malo awo otsegula. Mwachitsanzo, VLAN yamphamvu imatha kufotokozedwa ndi mndandanda wa maadiresi enieni (maadiresi a MAC ) kapena mayina a akaunti yanu.
VLAN Tagging ndi Standard VLANs
Mamembala a VLAN a Ethernet amatengera ndondomeko ya IEEE 802.1Q. Chizindikiro cha 802.1Q chiri ndi makina 32 (4 bytes ) a deta yomwe imayikidwa mu mutu wa Ethernet frame. Mitsuko 16 yoyamba ya mundawu ili ndi nambala yosakanizidwa 0x8100 yomwe imayambitsa zipangizo za Ethernet kuti zizindikire chithunzi ngati cha VLAN 802.1Q. Mipata 12 yomaliza ya mundawu ili ndi nambala ya VLAN, nambala pakati pa 1 ndi 4094.
Zotsatira zabwino za VLAN administration zimatanthauzira mitundu yosiyanasiyana ya ma intaneti:
- LAN Wachibadwidwe: Ma device Ethernet VLAN amachititsa mafelemu onse osatsegulidwa ngati a LAN akubadwa. Mzinda wa LAN ndi VLAN 1, ngakhale olamulira angasinthe nambala yosasintha.
- Ulamuliro wa VLAN: Umagwiritsidwa ntchito popereka mauthenga akutali kuchokera kwa olamulira. Mawebusaiti ena amagwiritsa ntchito VLAN 1 monga otsogolera VLAN pamene ena amapanga nambala yapadera chifukwa cha cholinga ichi (kuti asagwirizane ndi magalimoto ena amtundu)
Kukhazikitsa VLAN
Pamwamba pamtunda, oyang'anira makina amapanga VLAN atsopano motere:
- Sankhani nambala yoyenera ya VLAN
- Sankhani pepala lapadera la IP adiresi yamagetsi pa VLAN yomwe mungagwiritse ntchito
- Sungani makina osinthasintha pogwiritsa ntchito static kapena kusintha. Kukonzekera koyenera kumafuna kuti wotsogolera apereke nambala ya VLAN kuchithunzi chilichonse pomwe kusintha kwakukulu kumafuna mndandanda wa maadiresi a MAC kapena maina a masamba ku nambala ya VLAN.
- Konzani kayendedwe pakati pa VLAN ngati mukufunikira. Kukonza ma VLAN awiri kapena angapo kuti azilankhulana wina ndi mzake kumafunikira kugwiritsa ntchito woyendetsa VLAN kapena Layer 3 kusintha .
Zipangizo zoyendetsera ntchito ndi zojambulidwa zimagwiritsidwa ntchito mosiyana malinga ndi zipangizo zomwe zikukhudzidwa.