Iiswitshi ezilawulwayo ziphezulu kunezo zingalawulwayo ngokwemigaqo yokusebenza, kodwa zifuna ubuchule bomlawuli okanye injineli ukuze baqonde ngokupheleleyo amandla abo.Ulawulo oluchanekileyo ngakumbi lothungelwano kunye nezakhelo zabo zedatha zenziwe ukuba zikwazi ukusebenzisa iswitshi elawulwayo.Kwelinye icala, iiswitshi ezingalawulwayo zivumela olona hlobo lubalulekileyo lonxibelelwano phakathi kwezixhobo kuthungelwano.
Kweli nqaku, siza kuphonononga umahluko phakathi kotshintsho olulawulwayo nolungalawulwayo.
Yintoni utshintsho olulawulwayo?
Iiswitshi ezilawulwayo zibonelela ngezakhono ezifanayo njengokutshintsha okungalawulwayo, kunye nenzuzo eyongezelelweyo yokhetho lolawulo.
Ulawulo olubanzi lwenethiwekhi, ukujonga, kunye neenketho zoqwalaselo zikunika umyalelo omkhulu ngaphezulu kokuhamba kwedatha yenethiwekhi yakho yasekhaya.
Ngombulelo kubhetyebhetye olubonelelwa ngotshintsho olulawulwayo, izibuko ngalinye elikwisixhobo linokuhlengahlengiswa ngokwalo ukuze lihambelane neemfuno zakho.Izibonelelo ziquka iindlela ezichane ngakumbi zokugcina i-tab kwimo yenethiwekhi yakho kunye noluhlu olubanzi lweenketho zokulungisa ukuseta kwayo kwiimfuno zakho.
Ngokuqhelekileyo, le modeli yokutshintsha iya kuba ne-web-based okanye i-command-line interface evumela ukufikelela kude kujongano lolawulo lwesixhobo.Unokujonga kwinethiwekhi okanye wenze uhlengahlengiso ngaphandle kokuba kwigumbi elinye kunye nokutshintsha ngokwalo.
Iimpawu zeswitch elawulwa ngokupheleleyo kwaye ibekwe iliso:
Uluhlu olubanzi lwee-topology, kubandakanywa iProtocol ye-Spanning Tree, i-Ring, i-Mesh, i-Stacking, kunye ne-Aggregation, ziyafumaneka ukuthunyelwa kwayo, ukwandisa ukuphindaphinda kwayo kunye nokuthembeka.Ukusebenzisa ulawulo olukude kunye nolawulo lwe-software-defined networking (SDN), kunokwenzeka ukubeka iliso kunye nokuhlalutya idatha ye-traffic, ukulawula izixhobo zokugqibela, kunye nokujongana neengxaki nakwiinethiwekhi ezinkulu.Izinto ezininzi zokhuseleko zinokulawula ukuba ngubani ofikelela kwinethiwekhi, ukubeka iliso ekuhlaselweni kunye nokunceda ukulungisa nakuphi na ukuphulwa okwenzekayo.Umgangatho weNkonzo (QoS) unceda ukubeka phambili i-traffic kunye nokudibanisa izixhobo ezifanayo kunye ukuze bonke benze uninzi lwezixhobo zenethiwekhi.
Yintoni utshintsho olungalawulwayo?
Umsebenzi owodwa wokutshintsha okungalawulwayo kukudibanisa izixhobo ezenziwe nge-Ethernet kunye kwinethiwekhi ukwenzela ukuba zitshintshise idatha enye kwenye.Abanye abantu babona utshintsho olungalawulwayo “njengendoda ephakathi.”Ngelixa yongeza ngokufanelekileyo amachweba amaninzi kwinethiwekhi yakho, ayiphumezi enye into kwaye ayibonakali ngokwenene.
Ukutshintsha okungalawulwayo akukwazi ukulawula itrafikhi yenethiwekhi, kodwa kulula ukuyihambisa kuba ayifuni uqwalaselo.Umzamo kuphela ofunekayo kukuyiplaga. Ukutshintsha okungalawulwayo kusetyenziswa rhoqo kwiisetingi zemizi-mveliso ukudibanisa izixhobo ezinqamlekileyo okanye ukongeza okwethutyana amaqela ezixhobo kwinethiwekhi enkulu.
Iiswitshi ezingalawulwayo zihlala zinexabiso eliphantsi kunoogxa babo abalawulwayo, nangona kunjalo oku kungenxa yokuba abanazo izakhono eziphambili ezifumanekayo kwiiswitshi ezilawulwayo.
Uqhagamshelo olungalawulwayo, oluxabisa kancinci lubandakanya ezi mpawu zilandelayo:
Ulungelelwaniso oluzenzekelayo kunye nokusebenza xa kuplagiwe. Kona kuphela ulungelelwaniso olulula lwenethiwekhi, njengenkwenkwezi kunye netyathanga ledaisy, iya kusebenza.Amandla okuvelisa nokugcina iitafile zeedilesi ze-MAC ziphucula ulawulo lwezithuthi kwii-hubs ze-Ethernet ngeendlela ezininzi.Akukho mahluko phakathi kwendlela utshintsho oluphatha ngayo i-multicast kunye ne-traffic traffic, enokuthi ikhokelele kwimiba yengxinano emandla eyaziwa ngokuba zizaqhwithi zokusasaza.
Umahluko phakathi kweSwitshi eLawulwayo Vs engalawulwayo:
Indlela esetyenzisiweyo ngowona mahluko uphambili phakathi kotshintsho olulawulwayo nolungalawulwayo.Iswitshi elawulwayo inika umyalelo kubalawuli benethiwekhi, ebavumela ukuba babeke phambili i-LAN traffic kwaye balawule ukuhamba kwayo.Kwelinye icala, iswitshi engalawulwayo ifuna nje ukuba iplagwe kwaye ivulwe.Ivumela izixhobo ze-LAN ukuba zibe neencoko zabucala kunye nomnye.
Uthungelwano alunakutshintshwa ngotshintsho olungalawulwayo, kodwa kulula ukuyisebenzisa.Ngenxa yoko, yamkelwa jikelele ngamashishini amatsha.Nangona kunjalo, iswitshi elawulwayo yenza ulawulo lwe-LAN, uqwalaselo, kunye nokubeka iliso.Ukongezelela, ukuguqulwa kokutshintsha okulawulwayo kuququzelela ukuphindaphinda kwedatha kunye nokubuyiselwa kwimeko yesixhobo okanye ukungaphumeleli kwenethiwekhi.
Enye yeempawu zokhuseleko ezisisiseko zokutshintsha okungalawulwayo sisivalo sezibuko esitshixwayo, esithintela ukufikelela okungagunyaziswanga kwisixhobo.Iiswitshi ezilawulwayo, kwelinye icala, zineempawu zokhuseleko ezomeleleyo.Iyakwazi ukuvala imisonto yomsebenzi, idatha ekhuselekileyo, kwaye ilawule izicwangciso zonke ngokubeka iliso kwinethiwekhi kunye nezakhono zokulawula.
Ayiyomfihlo into yokuba iiswitshi ezingalawulwayo zinexabiso eliphantsi kunoogxa babo abalawulwayo.Ukongeza, ixabiso liyahluka ngokusekelwe kwiintlobo zamazibuko ezikhoyo.
Kwiimeko ezininzi, utshintsho olungalawulwayo lolona khetho lungcono kwinethiwekhi encinci, njengaleyo yekhaya okanye ishishini elincinci.Amashishini anomzila womnatha obanzi okanye axhomekeke kwiziko ledatha kwaye anokuzuza kulawulo olungqongqo kwitrafikhi yenethiwekhi kufuneka athathele ingqalelo utshintsho olulawulwayo.
Ukutshintsha kwe-Vs engalawulwayo kwaye yeyiphi onokuyithenga?
Zininzi izinto ekufuneka uziqwalasele xa ukhetha iswitshi elawulwayo.Thetha nengcali IT oqeqeshiweyo okanye umlawuli womnatha.Oku kulandelayo yeminye imibuzo ekuluncedo ukuyiqwalasela xa uthenga ngokubanzi.
ezinje ngotshintsho lufakwe kweyiphi indawo?Kubalulekile ukwazi ukuba bangaphi abantu kunye nezixhobo eziya kufikelela kwinethiwekhi ngaxeshanye.Ngaba itrafikhi yenethiwekhi inokulawulwa, kwaye uqwalaselo lwenethiwekhi luyafuneka?Sesiphi isizathu sokuba ufuna ukusebenzisa iiswitshi?
Kuqhelekile ukuba uthungelwano olunezixhobo eziqhagamshelweyo ezingaphantsi kweshumi elinesibini ukusebenzisa iswitshi engalawulwayo.Ngaphaya koko, akukho mfuneko yokhuseleko nolawulo.Iiswitshi ezilawulwayo zibonelela ngokuguquguquka okukhulu kunye nokusebenza kunoogxa babo abangalawulwayo.Ibona ukusasazwa ngokubanzi kwiimeko zamaziko njengezibhedlele, izikolo, kunye nee-arhente zikarhulumente.