1. Txheej txheem cej luam
Wireless AP (Wireless Access Point), uas yog, wireless access point, yog siv los ua lub wireless hloov ntawm lub wireless network thiab yog lub hauv paus ntawm lub wireless network. Wireless AP yog qhov chaw nkag mus rau cov khoom siv wireless (xws li cov khoos phis tawj nqa tau, lub davhlau ya nyob twg, thiab lwm yam) kom nkag mus rau hauv lub network txuas. Nws yog tsuas yog siv nyob rau hauv broadband tsev, tsev thiab chaw ua si, thiab muaj peev xwm npog kaum ntawm meters mus rau pua pua meters.
Wireless AP yog lub npe nrog ntau lub ntsiab lus. Nws tsis tsuas yog suav nrog cov ntsiab lus yooj yim wireless nkag (Wireless APs), tab sis kuj yog ib lo lus dav dav rau wireless routers (xws li wireless gateways, wireless txuas) thiab lwm yam khoom siv.
Wireless AP yog ib daim ntawv thov ntawm wireless hauv cheeb tsam network. Wireless AP yog tus choj txuas wireless network thiab wired network, thiab nws yog cov khoom siv tseem ceeb rau kev tsim cov wireless hauv zos network (WLAN). Nws muab kev ua haujlwm ntawm kev sib txuas ntawm cov khoom siv wireless thiab wired LANs. Nrog kev pab los ntawm wireless APs, cov khoom siv wireless hauv lub teeb liab ntawm wireless APs tuaj yeem sib txuas lus nrog ib leeg. Yog tsis muaj wireless APs, nws yog qhov yooj yim tsis yooj yim sua los tsim lub WLAN tiag tiag uas tuaj yeem nkag tau hauv Is Taws Nem. . Lub wireless AP nyob rau hauv WLAN yog sib npaug rau lub luag haujlwm ntawm qhov chaw nres tsheb hauv paus hauv kev sib txuas lus hauv xov tooj.
Piv nrog rau wired network architecture, wireless AP nyob rau hauv lub wireless network yog sib npaug rau lub hub nyob rau hauv lub wired network. Nws tuaj yeem txuas ntau yam khoom siv wireless. Daim npav network siv los ntawm lub wireless ntaus ntawv yog daim npav wireless network, thiab qhov nruab nrab kis tau tus mob yog huab cua (electromagnetic yoj). Wireless AP yog lub hauv paus ntsiab lus ntawm chav tsev wireless, thiab tag nrho cov teeb liab wireless hauv chav tsev yuav tsum dhau los ntawm nws rau kev sib pauv.
2. Kev ua haujlwm
2.1 Txuas wireless thiab wired
Lub luag haujlwm tseem ceeb tshaj plaws ntawm AP wireless yog txuas lub wireless network thiab wired network, thiab muab kev ua haujlwm ntawm kev nkag mus ntawm kev sib txuas ntawm lub wireless ntaus ntawv thiab cov xaim network. Raws li pom hauv daim duab 2.1-1.
Wireless AP txuas wired network thiab wireless devices
2.2 TSI
WDS (Wireless Distribution System), uas yog, wireless hotspot distribution system, nws yog ib qho tshwj xeeb muaj nuj nqi hauv wireless AP thiab wireless router. Nws yog qhov ua tau zoo heev kom paub txog kev sib txuas lus ntawm ob lub wireless. Piv txwv li, muaj peb tus neeg nyob sib ze, thiab txhua tsev neeg muaj lub wireless router lossis wireless AP uas txhawb WDS, kom lub teeb liab wireless tuaj yeem npog los ntawm peb tsev neeg tib lub sijhawm, ua rau kev sib txuas lus yooj yim dua. Txawm li cas los xij, nws yuav tsum raug sau tseg tias WDS cov cuab yeej txhawb nqa los ntawm lub wireless router raug txwv (feem ntau 4-8 pab kiag li lawm tuaj yeem txhawb nqa), thiab WDS cov cuab yeej ntawm ntau hom kuj tseem tsis txuas.
2.3 Kev ua haujlwm ntawm wireless AP
2.3.1 Relay
Lub luag haujlwm tseem ceeb ntawm wireless AP yog relay. Lub npe hu ua relay yog txhawm rau nthuav dav lub teeb liab wireless ib zaug ntawm ob lub ntsiab lus wireless, kom cov khoom siv wireless tau txais cov teeb liab muaj zog dua. Piv txwv li, ib qho AP tau muab tso rau ntawm point a, thiab muaj lub wireless ntaus ntawv ntawm point c. Nws muaj qhov deb ntawm 120 meters ntawm point a thiab point c. Lub teeb liab wireless kis tau los ntawm taw tes a mus rau taw tes c tau tsis muaj zog heev, yog li nws tuaj yeem nyob 60 meters deb. Tso lub wireless AP raws li ib tug relay ntawm point b, thiaj li hais tias lub wireless teeb liab ntawm point c tuaj yeem txhim kho tau zoo, yog li ua kom muaj kev sib kis ceev thiab ruaj khov ntawm lub teeb liab wireless.
2.3.2 Kev sib tw
Ib qho tseem ceeb ua haujlwm ntawm wireless AP yog kev sib txuas. Kev sib txuas yog txuas ob lub wireless AP qhov kawg kom paub cov ntaub ntawv xa mus ntawm ob lub wireless APs. Hauv qee qhov xwm txheej, yog tias koj xav txuas ob lub xov tooj LANs, koj tuaj yeem xaiv txuas txuas los ntawm wireless AP. Piv txwv li, ntawm point a muaj ib tug wired LAN muaj li ntawm 15 computers, thiab ntawm point b muaj ib tug wired LAN muaj li ntawm 25 computers, tab sis qhov deb ntawm cov ntsiab lus ab thiab ab yog deb heev, tshaj 100 meters, yog li nws tsis yog. haum rau txuas los ntawm cable. Lub sijhawm no, koj tuaj yeem teeb tsa lub wireless AP ntawm point a thiab point b raws li, thiab tig rau kev ua haujlwm ntawm lub wireless AP, kom cov LANs ntawm cov ntsiab lus ab thiab ab tuaj yeem xa cov ntaub ntawv mus rau ib leeg.
2.3.3 Master- qhev hom
Lwm txoj haujlwm ntawm wireless AP yog "tus tswv- qhev hom". Lub wireless AP ua haujlwm hauv hom no yuav raug suav tias yog tus neeg siv khoom siv wireless (xws li wireless network card lossis wireless module) los ntawm tus tswv wireless AP lossis wireless router. Nws yog qhov yooj yim rau kev tswj hwm lub network los tswj cov sub-network thiab paub txog qhov taw tes-rau-multipoint kev sib txuas (lub wireless router lossis lub ntsiab wireless AP yog ib qho taw qhia, thiab cov neeg siv khoom ntawm wireless AP yog multi-point). Qhov "tus tswv- qhev hom" muaj nuj nqi feem ntau yog siv nyob rau hauv kev sib txuas scenarios ntawm wireless LAN thiab wired LAN. Piv txwv li, point a yog wired LAN muaj li ntawm 20 computers, thiab point b yog wireless LAN muaj li ntawm 15 computers. Point b yog twb muaj wireless router. Yog tias taw tes a xav nkag mus rau point b, koj tuaj yeem ntxiv wireless AP ntawm point a, txuas lub wireless AP mus rau qhov hloov ntawm point a, thiab tom qab ntawd tig rau "master-slave mode" ntawm wireless AP thiab kev sib txuas wireless ntawm point b. Lub router txuas nrog, thiab lub sijhawm no tag nrho cov khoos phis tawj ntawm taw tes a tuaj yeem txuas mus rau cov khoos phis tawj ntawm point b.
3. Qhov txawv ntawm Wireless AP thiab Wireless Router
3.1 Wireless AP
Wireless AP, uas yog, wireless access point, tsuas yog ib qho wireless hloov hauv lub wireless network. Nws yog qhov chaw nkag mus rau cov neeg siv mobile davhlau ya nyob twg nkag mus rau hauv ib lub xov tooj cua. Nws yog tsuas yog siv rau hauv tsev broadband thiab kev lag luam sab hauv network xa tawm. Qhov kev pab them nqi wireless yog kaum ntawm meters mus rau ntau pua meters, lub ntsiab technology yog 802.11X series. General wireless APs kuj muaj qhov nkag mus rau tus neeg siv hom hom, uas txhais tau hais tias kev sib txuas wireless tuaj yeem ua tau ntawm APs, yog li nthuav dav kev pab cuam ntawm wireless network.
Txij li thaum lub wireless AP yooj yim tsis muaj txoj haujlwm routing, nws yog sib npaug rau lub wireless hloov thiab tsuas yog muab kev ua haujlwm ntawm wireless teeb liab kis tau tus mob. Nws lub hauv paus ntsiab lus ua haujlwm yog kom tau txais lub network teeb liab kis tau los ntawm tus khub twisted, thiab tom qab muab tso ua ke los ntawm wireless AP, hloov cov teeb liab hluav taws xob mus rau hauv xov tooj cua teeb liab thiab xa tawm mus rau qhov kev pab cuam ntawm lub wireless network.
3.2Wireless Router
Qhov txuas txuas wireless AP yog qhov peb feem ntau hu ua wireless router. Lub router wireless, raws li nws lub npe txhais tau hais tias, yog lub router nrog kev them nyiaj wireless, uas feem ntau yog siv rau cov neeg siv nthwv dej hauv Is Taws Nem thiab kev them nyiaj wireless. Piv nrog rau qhov yooj yim wireless AP, lub wireless router tuaj yeem paub txog kev sib txuas hauv Is Taws Nem hauv tsev wireless network los ntawm kev ua haujlwm, thiab tseem tuaj yeem paub txog kev sib koom wireless ntawm ADSL thiab zej zog broadband.
Nws tsim nyog hais tias wireless thiab wired terminals tuaj yeem raug xa mus rau subnet los ntawm wireless router, kom ntau yam khoom siv hauv subnet tuaj yeem pauv cov ntaub ntawv yooj yim.
3.3 Cov ntsiab lus
Hauv cov ntsiab lus luv luv, qhov yooj yim wireless AP yog sib npaug rau lub wireless hloov; lub wireless router (extended wireless AP) yog sib npaug rau "wireless AP + router function". Hais txog kev siv cov xwm txheej, yog tias lub tsev twb txuas nrog Is Taws Nem thiab tsuas yog xav muab kev nkag mus rau wireless, ces xaiv lub wireless AP yog txaus; tab sis yog tias lub tsev tseem tsis tau txuas nrog Is Taws Nem, peb yuav tsum txuas rau Is Taws Nem Wireless access muaj nuj nqi, ces koj yuav tsum xaiv lub wireless router nyob rau lub sijhawm no.
Tsis tas li ntawd, los ntawm qhov pom ntawm qhov pom, ob qho tib si zoo sib xws hauv qhov ntev, thiab nws tsis yooj yim rau kev paub qhov txawv ntawm lawv. Txawm li cas los xij, yog tias koj saib ze, koj tseem tuaj yeem pom qhov sib txawv ntawm ob: uas yog, lawv cov interfaces txawv. (yam yooj yim) wireless AP feem ntau muaj ib lub xov tooj RJ45 network chaw nres nkoj, chaw nres nkoj fais fab, chaw nres nkoj teeb tsa (USB chaw nres nkoj lossis teeb tsa los ntawm WEB interface), thiab tsawg dua qhov taw qhia teeb; Thaum lub wireless router muaj plaub qhov chaw txuas ntxiv txuas ntxiv, tshwj tsis yog Ib qho WAN chaw nres nkoj siv los txuas rau cov khoom siv hluav taws xob sab saud, thiab plaub lub LAN chaw nres nkoj tuaj yeem xaim txuas mus rau khoos phis tawj hauv intranet, thiab muaj ntau lub teeb qhia.
Post lub sij hawm: Apr-19-2023