1. Txheej txheem cej luam
Wireless AP (Chaw Nkag Mus Rau Wireless), uas yog, qhov chaw nkag mus rau hauv wireless, yog siv ua lub hloov wireless ntawm lub network wireless thiab yog lub hauv paus ntawm lub network wireless. Wireless AP yog qhov chaw nkag mus rau cov khoom siv wireless (xws li cov khoos phis tawj nqa tau, cov khoom siv mobile, thiab lwm yam) kom nkag mus rau hauv lub network wired. Nws feem ntau yog siv hauv cov tsev broadband, cov tsev thiab cov tiaj ua si, thiab tuaj yeem npog kaum meters txog ntau pua meters.
Wireless AP yog ib lub npe uas muaj ntau lub ntsiab lus. Nws tsis yog tsuas yog suav nrog cov chaw nkag mus rau wireless yooj yim (Wireless APs), tab sis kuj yog ib lo lus dav dav rau cov wireless routers (xws li wireless gateways, wireless bridges) thiab lwm yam khoom siv.
Wireless AP yog ib qho kev siv dav dav ntawm wireless local area network. Wireless AP yog ib lub choj txuas wireless network thiab wired network, thiab nws yog cov khoom siv tseem ceeb rau kev tsim wireless local area network (WLAN). Nws muab kev nkag mus rau ob tog ntawm cov khoom siv wireless thiab wired LANs. Nrog kev pab los ntawm wireless APs, cov khoom siv wireless hauv cov teeb liab ntawm wireless APs tuaj yeem sib txuas lus nrog ib leeg. Yog tsis muaj wireless APs, nws yeej tsis yooj yim sua kom tsim tau WLAN tiag tiag uas tuaj yeem nkag mus rau hauv Is Taws Nem. . Wireless AP hauv WLAN yog sib npaug rau lub luag haujlwm ntawm chaw nres tsheb xa xov hauv lub network sib txuas lus txawb.
Piv nrog rau cov qauv network wired, lub wireless AP hauv lub wireless network zoo ib yam li lub hub hauv lub wired network. Nws tuaj yeem txuas ntau yam khoom siv wireless. Daim npav network uas lub wireless siv yog daim npav network wireless, thiab qhov nruab nrab xa xov yog cua (electromagnetic wave). Wireless AP yog qhov chaw nruab nrab ntawm lub wireless unit, thiab txhua lub teeb liab wireless hauv lub unit yuav tsum dhau los ntawm nws rau kev sib pauv.
2. Cov Haujlwm
2.1 Txuas wireless thiab wired
Lub luag haujlwm feem ntau ntawm lub wireless AP yog txuas lub wireless network thiab lub wired network, thiab muab lub luag haujlwm ntawm kev nkag mus rau ntawm lub cuab yeej wireless thiab lub wired network. Raws li pom hauv Daim Duab 2.1-1.
Wireless AP txuas cov network wired thiab cov khoom siv wireless
2.2 WDS
WDS (Wireless Distribution System), uas yog, wireless hotspot distribution system, nws yog ib qho tshwj xeeb hauv wireless AP thiab wireless router. Nws yog ib qho tseem ceeb heev rau kev sib txuas lus ntawm ob lub wireless devices. Piv txwv li, muaj peb lub zej zog, thiab txhua tsev neeg muaj lub wireless router lossis wireless AP uas txhawb nqa WDS, yog li peb lub tsev neeg tuaj yeem them lub teeb liab wireless tib lub sijhawm, ua rau kev sib txuas lus yooj yim dua. Txawm li cas los xij, nws yuav tsum nco ntsoov tias cov khoom siv WDS uas txhawb nqa los ntawm wireless router yog txwv (Feem ntau 4-8 lub khoom siv tuaj yeem txhawb nqa), thiab cov khoom siv WDS ntawm ntau hom kuj tseem yuav tsis txuas tau.
2.3 Cov Haujlwm ntawm wireless AP
2.3.1 Kev Txuas Lus
Ib qho tseem ceeb ntawm wireless AP yog relay. Qhov hu ua relay yog kom nthuav lub teeb liab wireless ib zaug ntawm ob lub wireless points, yog li ntawd lub cuab yeej wireless nyob deb tuaj yeem tau txais lub teeb liab wireless muaj zog dua. Piv txwv li, AP raug tso rau ntawm qhov chaw a, thiab muaj lub cuab yeej wireless ntawm qhov chaw c. Muaj qhov deb ntawm 120 meters ntawm qhov chaw a thiab qhov chaw c. Kev xa cov teeb liab wireless los ntawm qhov chaw a mus rau qhov chaw c tau qaug zog heev, yog li nws tuaj yeem nyob deb li 60 meters. Muab lub wireless AP ua relay ntawm qhov chaw b, yog li lub teeb liab wireless ntawm qhov chaw c tuaj yeem txhim kho tau zoo, yog li ua kom qhov ceev ntawm kev xa thiab kev ruaj khov ntawm lub teeb liab wireless.
2.3.2 Kev Txuas Lus
Ib qho tseem ceeb ntawm wireless AP yog kev txuas. Kev txuas yog txuas ob lub wireless AP endpoints kom xa cov ntaub ntawv ntawm ob lub wireless APs. Hauv qee qhov xwm txheej, yog tias koj xav txuas ob lub LANs uas muaj xov hlau, koj tuaj yeem xaiv txuas los ntawm wireless AP. Piv txwv li, ntawm qhov chaw a muaj wired LAN uas muaj 15 lub computer, thiab ntawm qhov chaw b muaj wired LAN uas muaj 25 lub computer, tab sis qhov deb ntawm cov ntsiab lus ab thiab ab yog deb heev, tshaj 100 meters, yog li nws tsis haum rau kev txuas los ntawm cable. Lub sijhawm no, koj tuaj yeem teeb tsa wireless AP ntawm qhov chaw a thiab qhov chaw b, thiab qhib lub luag haujlwm txuas ntawm wireless AP, kom LANs ntawm cov ntsiab lus ab thiab ab tuaj yeem xa cov ntaub ntawv rau ib leeg.
2.3.3 Hom Tswv-qhev
Lwm yam haujlwm ntawm wireless AP yog "hom master-slave". Lub wireless AP ua haujlwm hauv hom no yuav raug suav hais tias yog lub wireless client (xws li wireless network card lossis wireless module) los ntawm master wireless AP lossis wireless router. Nws yooj yim rau kev tswj hwm network los tswj hwm lub sub-network thiab paub txog kev sib txuas point-to-multipoint (lub wireless router lossis lub wireless AP tseem ceeb yog ib qho taw tes, thiab lub client ntawm wireless AP yog ntau qhov taw tes). Lub luag haujlwm "master-slave mode" feem ntau siv rau hauv cov xwm txheej sib txuas ntawm wireless LAN thiab wired LAN. Piv txwv li, point a yog wired LAN uas muaj 20 lub khoos phis tawj, thiab point b yog wireless LAN uas muaj 15 lub khoos phis tawj. Point b twb muaj wireless router lawm. Yog tias point a xav nkag mus rau point b, koj tuaj yeem ntxiv wireless AP ntawm point a, txuas lub wireless AP rau lub qhov hloov ntawm point a, thiab tom qab ntawd tig rau "hom master-slave" ntawm wireless AP thiab kev sib txuas wireless ntawm point b. Lub router txuas nrog, thiab lub sijhawm no txhua lub khoos phis tawj ntawm point a tuaj yeem txuas 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 lub wireless switch hauv lub wireless network. Nws yog ib qho access point rau cov neeg siv mobile terminal nkag mus rau hauv lub wired network. Nws feem ntau yog siv rau kev siv broadband hauv tsev thiab kev xa tawm hauv lub network hauv tuam txhab. Qhov deb ntawm wireless yog kaum tawm meters txog pua pua meters, lub thev naus laus zis tseem ceeb yog 802.11X series. Cov wireless APs feem ntau kuj muaj hom access point client, uas txhais tau tias kev sib txuas wireless tuaj yeem ua tiav ntawm APs, yog li nthuav dav qhov kev pab cuam ntawm lub wireless network.
Vim tias lub wireless AP yooj yim tsis muaj lub luag haujlwm routing, nws zoo ib yam li lub wireless switch thiab tsuas yog muab lub luag haujlwm ntawm kev xa cov teeb liab wireless. Nws txoj haujlwm ua haujlwm yog txais cov teeb liab network xa los ntawm cov twisted pair, thiab tom qab sau los ntawm wireless AP, hloov cov teeb liab hluav taws xob mus rau hauv lub teeb liab xov tooj cua thiab xa nws tawm los tsim kev npog ntawm lub wireless network.
3.2Wireless Router
Lub wireless AP txuas ntxiv yog qhov peb feem ntau hu ua wireless router. Lub wireless router, raws li nws lub npe qhia, yog lub router nrog lub luag haujlwm wireless, uas feem ntau yog siv rau cov neeg siv los tshawb nrhiav Is Taws Nem thiab wireless coverage. Piv nrog rau lub wireless AP yooj yim, lub wireless router tuaj yeem paub txog kev sib koom kev sib txuas Is Taws Nem hauv tsev wireless network los ntawm kev ua haujlwm routing, thiab tseem tuaj yeem paub txog kev sib koom wireless ntawm ADSL thiab zej zog broadband.
Nws tsim nyog hais tias cov chaw nres nkoj wireless thiab wired tuaj yeem muab faib rau subnet los ntawm lub router wireless, yog li ntau yam khoom siv hauv subnet tuaj yeem sib pauv cov ntaub ntawv tau yooj yim.
3.3 Cov Lus Qhia Luv Luv
Hauv kev luv luv, lub wireless AP yooj yim zoo ib yam li lub wireless switch; lub wireless router (extended wireless AP) zoo ib yam li "wireless AP + router function". Hais txog kev siv, 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 txaus lawm; tab sis yog tias lub tsev tseem tsis tau txuas nrog Is Taws Nem, peb yuav tsum txuas rau lub Internet Wireless access function, ces koj yuav tsum xaiv lub wireless router lub sijhawm no.
Ntxiv mus, los ntawm qhov pom ntawm qhov tsos, ob qho no yeej zoo sib xws hauv qhov ntev, thiab nws tsis yooj yim rau kev sib txawv. Txawm li cas los xij, yog tias koj saib ze ze, koj tseem tuaj yeem pom qhov txawv ntawm ob qho: uas yog, lawv cov interfaces sib txawv. (Hom yooj yim) wireless AP feem ntau muaj qhov chaw nres nkoj network RJ45 wired, qhov chaw nres nkoj fais fab, qhov chaw nres nkoj teeb tsa (qhov chaw nres nkoj USB lossis teeb tsa los ntawm WEB interface), thiab tsawg dua lub teeb qhia; thaum lub router wireless muaj plaub qhov chaw nres nkoj network wired ntxiv, tsuas yog Ib qho chaw nres nkoj WAN siv los txuas rau cov khoom siv network theem siab dua, thiab plaub qhov chaw nres nkoj LAN tuaj yeem txuas nrog cov khoos phis tawj hauv intranet, thiab muaj ntau lub teeb qhia.
Lub sijhawm tshaj tawm: Plaub Hlis-19-2023