Ngaphambili, siphuhlise itekhnoloji yaMandla ngaphezulu kwe-Ethernet kwizitshixo zethu kuphela kwicala lokwandisa amandla othumelo. Kodwa ngexesha lokusebenza kwezisombululo nge-PoE kunye ne-PoE +, kwacaca ukuba oku akwanelanga. Abathengi bethu abajonganga kuphela ngokunqongophala kwebhajethi yamandla, kodwa kunye nomda osemgangathweni wothungelwano lwe-Ethernet - uluhlu lokudlulisa ulwazi lwemitha eyi-100. Kweli nqaku siza kukuxelela indlela yokujikeleza lo mda kunye nokuvavanya uluhlu olude lwe-PoE kwi. ukuziqhelanisa.
Kutheni sifuna itekhnoloji yoluhlu olude lwe-PoE?
Umgama weemitha ezilikhulu kakhulu. Ngaphezu koko, ngokwenene ikhebula alizange libekwe ngendlela echanekileyo: kufuneka ujikeleze zonke iigophe zesakhiwo, ukuphakama okanye ukuwa ukusuka kwelinye ijelo ukuya kwelinye, njalo njalo. Kwanakwizakhiwo ezinobungakanani obuphakathi, umda wobude becandelo le-Ethernet unokujika ube yintloko ebuhlungu kumlawuli.
Sagqiba ekubeni sisebenzise umzekelo wesakhiwo sesikolo ukubonisa ngokucacileyo ukuba zeziphi izixhobo eziya kukwazi ukufumana umbane usebenzisa i-PoE kwaye zidibanise kwinethiwekhi (iinkwenkwezi eziluhlaza), kwaye ezingayi (iinkwenkwezi ezibomvu). Ukuba izixhobo zenethiwekhi azikwazi ukufakwa phakathi kwamatyala, ngoko kwiindawo ezigqithiseleyo izixhobo aziyi kukwazi ukuxhuma:
Ukugqitha umda woluhlu, kusetyenziswa itekhnoloji yePoE yeLong Range: ikuvumela ukuba wandise indawo yokugubungela inethiwekhi enentambo kwaye uqhagamshele ababhalisile abakumgama wokuya kuthi ga kwi-250 yeemitha. Xa usebenzisa i-Long Range PoE, idatha kunye nombane zithunyelwa ngeendlela ezimbini:
- Ukuba isantya se-interface si-10 Mbps (i-Ethernet rhoqo), ngoko ukuhanjiswa kwangaxeshanye zombini amandla kunye nedatha kunokwenzeka kumacandelo ukuya kwi-250 yeemitha ubude.
- Ukuba isantya se-interface sisethelwe kwi-100 Mbps (kwimizekelo ye-TL-SL1218MP kunye ne-TL-SG1218MPE) okanye i-1 Gbps (imodeli ye-TL-SG1218MPE), ngoko akukho kudluliselwa kwedatha kuya kwenzeka - ukudluliselwa kwamandla kuphela. Kule meko, enye indlela yokudlulisa idatha iya kufuneka, umzekelo, umgca we-optical parallel. Uluhlu olude lwePoE kulo mzekelo luya kusetyenziselwa kuphela amandla akude.
Ngaloo ndlela, xa usebenzisa i-Long Range PoE kwintsimi yesikolo esifanayo, izixhobo zenethiwekhi ezixhasa isantya se-10 Mbps zinokufumaneka nakweyiphi na indawo.
Ziziphi iiswitshi ezixhasa i-Long Range PoE enokuyenza
Uluhlu olude lwePoE umsebenzi uyafumaneka kwizitshixo ezimbini kumgca we-TP-Link: ΠΈ .
I-TL-SL1218MP lutshintsho olungalawulwayo. Inamachweba angama-16, ibhajethi yayo ye-PoE iyonke yi-192 W, evumela ukuba inikeze amandla ukuya kwi-30 W nganye kwizibuko. Ukuba uhlahlo lwabiwo-mali lwamandla alugqithwanga, zonke ii-16 ze-Fast Ethernet port zingafumana amandla.
Uqwalaselo lwenziwa ngokusebenzisa utshintsho kwipaneli yangaphambili: enye isebenze i-Long Range mode ye-PoE, kwaye okwesibini iqwalasela ukubaluleka kwamachweba xa ihambisa ibhajethi yamandla yokutshintsha.
I-TL-SG1218MPE yeyeeswitshi ze-Easy Smart. Ungasilawula isixhobo usebenzisa ujongano lwewebhu okanye izinto ezikhethekileyo.
Kwicandelo le-System interface, abalawuli banokufikelela kwimisebenzi eqhelekileyo yesiqhelo: ukutshintsha ukungena kunye negama lokungena kwi-akhawunti yomlawuli, ukubeka idilesi ye-IP yemodyuli yokulawula, ukuhlaziya i-firmware, njalo njalo.
Iindlela zokusebenza zezibuko zisetwe kwi Ukutshintsha β icandelo lokuSeta isibuko. Ukusebenzisa iithebhu eziseleyo zecandelo, unokwenza/ukhubaze i-IGMP kwaye udibanise ujongano lomzimba ngokwamaqela.
Icandelo lokuJonga libonelela ngolwazi lweenkcukacha-manani malunga nokusebenza kwamazibuko okutshintsha. Unokwenza isipili setrafikhi, uvule okanye uvale ukhuseleko lwe-loop, kwaye uqhube umvavanyi wentambo eyakhelwe-ngaphakathi.
I-TL-SG1218MPE iswitshi ixhasa iindlela ezininzi zothungelwano olubonakalayo: 802.1q ukuthegiswa, i-port-based VLAN, kunye ne-MTU VLAN. Xa usebenza kwimodi ye-MTU ye-VLAN, utshintsho luvumela kuphela utshintshiselwano lwe-traffic phakathi kwamazibuko omsebenzisi kunye ne-uplink interface, oko kukuthi, utshintshiselwano lwe-traffic phakathi kwamazibuko omsebenzisi aluvumelekanga ngokuthe ngqo. Le teknoloji ikwabizwa ngokuba yi-Asymmetric VLAN okanye iVLAN yaBucala. Isetyenziselwa ukuphucula ukhuseleko lwenethiwekhi ukwenzela ukuba xa uqhagamshelwe ngokwasemzimbeni kwitshintshi, umhlaseli akayi kukwazi ukubamba ulawulo lwezixhobo.
Kwicandelo leQoS, unokuseta ujongano oluphambili, uqwalasele imida yesantya sokuhamba komsebenzisi, kwaye ujongane nezaqhwithi.
Kwicandelo le-PoE Config, umlawuli unokunciphisa ngamandla amandla amaninzi akhoyo kumthengi othile, ukubeka phambili amandla ombane, ukudibanisa okanye ukunqamula umthengi.
Uvavanyo olude
Kwi-TL-SL1218MP senze inkxaso ye-Long Range kumazibuko asibhozo okuqala. Uvavanyo lwethu lwefowuni ye-IP lusebenze ngempumelelo. Ngokusebenzisa izicwangciso zefowuni, sifumene ukuba isantya esivunyelwene ngaso yi-10 Mbps. Siye sajika ke iLong Range PoE switch to Off sajonga ukuba kwenzeke ntoni kwi test phone after that. Isixhobo siqale ngempumelelo kwaye sabika sisebenzisa imowudi ye-100 Mbps kwi-interface yayo yenethiwekhi, kodwa idatha ayizange ihanjiswe ngeshaneli kwaye ifowuni ayizange ibhaliswe kwisikhululo. Ngaloo ndlela, amandla abathengi abaxhunyiwe kwii-channel ze-Ethernet ezide zinokwenzeka ngaphandle kokuvula i-Long Range mode ye-PoE, kodwa kule meko kuphela amandla aya kuhanjiswa ngetshaneli, kungekhona idatha.
Kumandla asemgangathweni kwimodi ye-Ethernet (xa ubude becandelo abudluli kwiimitha ezili-100), ukuhanjiswa kwamandla kunye nokudluliselwa kwedatha kwenzeka ngesantya ukuya kwi-1 Gbps edibeneyo. Ukuvavanya ukusebenza kwefowuni enikwe amandla yi-PoE kwaye iqhagamshelwe ngentambo yobude obuninzi ibe yimpumelelo.
Kwi-TL-SG1218MPE yokutshintsha siye satshintshela i-port kwi-10 Mbps ye-Half Duplex mode - isixhobo sixhunyiwe ngempumelelo.
Ngokwendalo, besifuna ukwazi ukuba angakanani amandla asetyenziswa yifowuni kolu qhagamshelwano, kwafumaniseka ukuba yi-1,6 W kuphela.
C:>ping -t 192.168.1.10
Pinging 192.168.1.10 with 32 bytes of data:
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.1.10:
Packets: Sent = 16, Received = 9, Lost = 7 (43% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C
Kodwa ukuba utshintshe ujongano lokutshintsha kwi-100 Mbps Half Duplex okanye 100 Mbps Full Duplex mode yokusebenza, uqhagamshelo kunye nefowuni kulahleka ngokukhawuleza kwaye alubuyiselwa.
Ujongano ngokwalo lukwimeko yonxulumano ezantsi.
Phantse kwenzeke into efanayo ukuba ujongano lutshintshelwa kwisantya esizenzekelayo kunye nemowudi yothethathethwano ephindwe kabini. Ke, ekuphela kwendlela yokusebenzisa amacandelo amade e-Ethernet kukuseta ngesandla isantya soqhagamshelo kwi-10 Mbps.
Ngelishwa, iisegmenti zekhebula ezinde ezinjalo azibonwa ngumvavanyi wentambo eyakhelwe-ngaphakathi.
Ukuhlaziya ezinye iiswitshi ze-PoE
Ekubeni inani lezixhobo ezinikwe amandla yi-PoE lihlala lisanda, siye sahlaziywa ukunikezelwa kwamandla kwiimodeli ezindala. Ngoku, endaweni ye-110 W kunye ne-192 W amandla ombane, zonke iimodeli ziya kuba neeyunithi ze-150 W kunye ne-250 W. Lonke olu tshintsho lunokubonwa kwitheyibhile:
Njengoko iteknoloji ye-PoE yaqala ukungena kwinqanaba lomthengi, enye inguqu kumgca wokungeniswa yayikungeniswa kokutshintsha okwenzelwe iiofisi ezincinci kunye nokusetyenziswa kwekhaya.
Ngo-2019, iimodeli zavela kumgca wokutshintsha okungalawulwayo kwe-Ethernet ΠΈ kuba 5 yaye 8 izibuko. Uhlahlo lwabiwo-mali lwamandla eemodeli yi-58 W, kwaye inokuhanjiswa phakathi kwe-interfaces ezine (ukuya kwi-15,4 W ngechweba ngalinye). Izitshintshi azinabalandeli; zinokubekwa ngokuthe ngqo kwiofisi kunye neendawo zokusebenza, amagumbi kwaye zisetyenziselwa ukudibanisa naziphi na iikhamera ze-IP kunye neefowuni ze-IP. Iiswitshi zinokubeka phambili ukuhanjiswa kwamandla: xa ukugcwala kusenzeka, izixhobo ezibaluleke kakhulu ziyacinywa.
Iimodeli ΠΈ , njengeemodeli ze-SF, zenzelwe ukufakwa kwe-desktop, kodwa zine-gigabit switch eyakhelwe-ngaphakathi, ekuvumela ukuba udibanise izixhobo ze-terminal ze-high-speed ezixhasa i-802.3af.
Tshintsha Inokubekwa zombini etafileni nakwi-rack. Le modeli inezibuko ze-Gigabit Ethernet ezisibhozo, nganye kuzo inokudityaniswa kumthengi nge-IEEE 802.3af/ngenkxaso kunye namandla afikelela kuma-30 W. Uhlahlo lwabiwo-mali lulonke lwamandla esixhobo yi-126 W. Isici esikhethekileyo sokutshintsha kukuba isekela imo yokulondoloza amandla, apho utshintshi luhlala ludibanisa amachweba kwaye lucime umbane ukuba akukho sixhobo sixhunyiwe. Oku kukuvumela ukuba unciphise ukusetyenziswa kwamandla ngama-75%.
Ukongeza kwi-TL-SG1218PE, umgca we-TP-Link weenguqu ezilawulwayo ziquka iimodeli ΠΈ . Banohlahlo lwabiwo-mali olupheleleyo lwamandla esixhobo - i-55 W. Olu hlahlo lwabiwo-mali lunokuphinda lusasazwe kumazibuko amane ukuya kuthi ga kwi-15,4 W yamandla aphumayo kwizibuko ngalinye. Ezi zitshintshi zine-firmware efanayo ne-TL-SG1218PE, ngokulandelanayo, kwaye imisebenzi iyafana: ukubeka iliso kwinethiwekhi, ukubeka phambili i-traffic, QoS, i-MTU VLAN.
Inkcazo epheleleyo yoluhlu lwesixhobo se-TP-Link PoE iyafumaneka .
umthombo: www.habr.com