Ma VLAN osasunthika amatchedwanso ma VLAN okhala ndi ma port.Uku ndikulongosola doko lomwe ndi ID ya VLAN.Kuchokera pamlingo wakuthupi, mutha kufotokoza mwachindunji kuti LAN yoyikidwa ikugwirizana ndi doko mwachindunji.
Pamene woyang'anira VLAN akukonzekera poyamba mgwirizano wogwirizana pakati pa doko losinthira ndi VLAN ID, chiyanjano chofananacho chakhazikitsidwa.Ndiko kuti, ID imodzi yokha ya VLAN yomwe ingakhazikitsidwe kuti ifike padoko ndipo singasinthidwe pambuyo pake pokhapokha ngati woyang'anira akonzanso.
Chida chikalumikizidwa ndi doko ili, mungadziwe bwanji ngati ID ya VLAN ya wolandilayo ikugwirizana ndi doko?Izi zimatsimikiziridwa molingana ndi kasinthidwe ka IP.Tikudziwa kuti VLAN iliyonse ili ndi nambala ya subnet ndi doko lomwe limafanana nalo.Ngati adilesi ya IP yofunikira ndi chipangizocho sichikugwirizana ndi nambala ya subnet ya VLAN yogwirizana ndi doko, kulumikizana kumalephera, ndipo chipangizocho sichingathe kuyankhulana bwino.Choncho, kuwonjezera pa kulumikiza ku doko lolondola, chipangizocho chiyeneranso kupatsidwa adiresi ya IP ya gawo la VLAN network, kuti iwonjezedwe ku VLAN.Kuti mumvetse izi, m'pofunika kumvetsetsa kuti subnet ili ndi IP ndi subnet mask.Nthawi zambiri, magawo atatu omaliza a subnet amagwiritsidwa ntchito pozindikira dzina lomaliza.
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Kuti tichite zimenezi, tiyenera kukonza VLAN ndi madoko mmodzimmodzi.Komabe, ngati madoko opitilira zana pamaneti akuyenera kukhazikitsidwa, ntchito yomwe ikubwerayo siyitha kutha kwakanthawi kochepa.Ndipo ID ya VLAN ikafunika kusinthidwa, iyenera kukhazikitsidwanso-izi mwachiwonekere sizoyenera maukonde omwe amafunikira kusintha mawonekedwe a topology pafupipafupi.
Pofuna kuthetsa mavutowa, lingaliro la VLAN yamphamvu yakhazikitsidwa.Kodi VLAN yamphamvu ndi chiyani?Tiyeni tione bwinobwino.
2. VLAN Yamphamvu: VLAN Yamphamvu imatha kusintha VLAN ya doko nthawi iliyonse malinga ndi kompyuta yolumikizidwa ku doko lililonse.Izi zitha kupewa ntchito zomwe zili pamwambapa, monga kusintha makonda.Ma VLAN amphamvu amatha kugawidwa m'magulu atatu:
(1) VLAN yokhala ndi adilesi ya MAC
VLAN yotengera adilesi ya MAC imatsimikizira umwini wa doko pofunsa ndi kujambula adilesi ya MAC ya kirediti kadi yolumikizidwa kudoko.Tiyerekeze kuti adilesi ya MAC "B" yakhazikitsidwa ngati ya VLAN 10 ndi chosinthira, ndiye ziribe kanthu kuti kompyuta yomwe ili ndi adilesi ya MAC "A" ilumikizidwa ndi chiyani, dokolo lidzagawidwa mu VLAN 10. kompyuta ikalumikizidwa doko 1, doko 1 ndi la VLAN 10;kompyuta ikalumikizidwa ku doko 2, doko 2 ndi la VLAN 10. Njira yozindikiritsira imangoyang'ana adilesi ya MAC, osati doko.Doko lidzagawidwa mu VLAN yofananira pomwe adilesi ya MAC ikusintha.
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Komabe, kwa VLAN kutengera adilesi ya MAC, ma adilesi a MAC a makompyuta onse olumikizidwa ayenera kufufuzidwa ndikulowetsedwa mu nthawi yokhazikitsa.Ndipo ngati kompyuta isinthana ndi kirediti kadi, mufunikabe kusintha mawonekedwe chifukwa adilesi ya MAC imagwirizana ndi khadi yapaintaneti, yomwe ili yofanana ndi ID ya Hardware ya khadi yaukonde.
(2) VLAN yochokera pa IP
Subnet yochokera ku VLAN imatsimikizira VLAN ya doko kudzera pa adilesi ya IP ya kompyuta yolumikizidwa.Mosiyana ndi VLAN yochokera ku adilesi ya MAC, ngakhale adilesi ya MAC ya kompyuta ikasintha chifukwa chakusinthana kwa makhadi a netiweki kapena pazifukwa zina, bola ngati adilesi yake ya IP ikadali yosasinthika, imatha kujowinabe VLAN yoyambirira.
Chifukwa chake, poyerekeza ndi ma VLAN otengera ma adilesi a MAC, ndizosavuta kusintha mawonekedwe a netiweki.Adilesi ya IP ndi chidziwitso cha gawo lachitatu mu chitsanzo cha OSI, kotero tikhoza kumvetsetsa kuti VLAN yochokera ku subnet ndi njira yokhazikitsira maulalo olowera mu gawo lachitatu la OSI.
(3) VLAN yotengera ogwiritsa ntchito
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VLAN yochokera kwa ogwiritsa ntchito imatsimikizira kuti doko la VLAN ndi liti malinga ndi wogwiritsa ntchito pano pakompyuta yolumikizidwa ku doko lililonse la switch.Zambiri zozindikiritsa ogwiritsa ntchito pano nthawi zambiri zimakhala wogwiritsa ntchito yemwe walowetsedwa ndi makina ogwiritsira ntchito pakompyuta, monga dzina la ogwiritsa ntchito mu Windows domain.Zambiri za dzina la ogwiritsa ntchito ndizomwe zili pamwamba pa gawo lachinayi la OSI.
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Zomwe zili pamwambazi ndi kufotokozera kwa VLAN Implementation Principle yobweretsedwa kwa inu ndi Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. Shenzhen Haidiwei Optoelectronics Technology Co., Ltd.