He aha te Itarangi - te painga matua o te whatunga ipurangi

Ko te Itarangi, ka mohiotia te reira i roto i te hitu ahuru o te rau tau XX. whakaaro ahau tenei momo o LAN Robert Metcalfe, nei i mahi i te wa o te Xerox Corporation. I roto i te 70 te mutunga 'puaki te Metcalfe tona ake kamupene 3com, te wahi oti ia te whanaketanga o te hangarau hou. Neke atu i te wā whakakapi i te reira i te ngā na momo o whatunga rohe, me te kamupene Metcalfe ka te rangatira i roto i tenei mara.

hanga te wāhanga «Itarangi» te ake o kupu Etera (Etera) me kupenga (whatunga). Na korero koe ake, e ko Itarangi, me aha e nga āhuatanga matua o tenei momo o te whatunga. Tenei momo o te whatunga he whetu hanganga rārangi ranei ki te tere o te 10-100 megabits / tuarua. Tuatahi e hāngai ana Itarangi i runga i te taura tafenga, engari i runga i te wā, kua puta ke te hangarau, ka timata ki te hanga i te whatunga i runga i taura muka-whatu rua miro ranei. Na i reira e pā ana ki toru tekau ngā momo o whatunga Itarangi e rerekē i roto i te tere, mahere whenua, te rahi me te momo o te taura. Kihai i kitea momo katoa tono arumoni. Hoki te hunga e hiahia ana ki te mohio i roto i te taipitopito ki ta te Itarangi, whakarārangi tatou te hangarau tino rongonui.

Xerox Itarangi - hangarau e hāngai ana i runga i te taura tafenga ki te auau mōrahi o 3 megabits ia rua. Te whakarerekētanga StarLan, i whakamahia tuatahi rua miro. He iti te tere o te hononga - anake 1 megabit ia te rua.

Ko te hangarau 10BASE5 taura tafenga whakawhiti raraunga ka kīia e o 10 megabits / tuarua. Rite te taua tere, me te i roto i StarLan10, engari tafenga taura kua konei kua whakakapia ki te rua miro. I muri, kua meinga tenei hangarau he ahua o 10BASE-T, te wahi e whakamahia te takirua miro wha.
I roto i te whakarerekētanga o 100BASE-T tere miro-rua nui haere ki te kotahi rau megabits / tuarua. Kua whakawhanakehia ake tēnei momo. 100BASE-FX whakawhiti raraunga i runga i te muka whatu taura i te tawhiti o te 10 kiromita i te tere o te kotahi rau megabits / tuarua. Ka whakamahi te 1000BASE-T wha takirua vytye, a he rite ki te kotahi rau mita te tawhiti. I roto i te whakarerekētanga nui haere 1000BASE-LH tawhiti ki te 100 km. te rua whakamutunga i te tere rawa, ko reira ki runga ki te 1000 megabits ia rua.

Itarangi, e ngā katoa o enei akatuke'anga hono te ki te pūmana motuhake ngātahi i runga i te poari pūnaha.

Na kia kite a he aha e nga painga o tenei momo o te whatunga. Ko te painga tino nui ai - te reira wātea. Kei te hono te rorohiko ki te whatunga te wa katoa, me i mua haere koe ipurangi reira he kore hiahia ki te waea ake kaiwhakarato. Neke atu i te Itarangi tino e huaina he aho riihitia, i roto i nei te pouwhanga kore te noa e hiahiatia ana. Ko tētahi atu painga - te tere tiketike e taea ai te kawa Itarangi. whakaratohia Tere e hangarite, ahakoa piu kōnae tonohia ranei. I tua atu, ka taea e tetahi Itarangi-hononga kia te pūtake o te whatunga rohe rangatōpū rohe ranei i roto i nei e waiho rorohiko katoa e wātea ana ki te hononga tere tiketike taua.

Kei te pai te hoki whakaritea Haumarutanga i roto i te teie mahana Itarangi-whatunga. Ko te tikanga, kaiwhakarato whakahere te kaiwhakamahi tūturu IP-wāhitau ki te whakarite i te muna o te rorohiko i roto i te "Tukutuku Ao Whānui." O te akoranga, ko te tino ngāwari ki te hono kore te painga iti rawa o te whatunga taua. e kore e hiahia ana koe he pouwhanga tetahi pūmanawa motuhake ranei, tika i te kāri whatunga hanga e te i roto i tata katoa Motherboards. Ko e tika ana ki te tapatahi, me te whai wāhi me te utu iti o Itarangi-hononga tenei. utu te reira i te rota iti iho i te hononga ao i roto i pouwhanga waea-ake.

Neke atu i te wa, ka meinga tenei momo o te whatunga noa atu wātea. Kua, i reira he whakarerekētanga, whakarato i te tere o e pā ana ki 10 gigabits / tuarua. Na roto i te tūmanakohia te waenganui o tenei tekau tau ko te hangarau putanga, e ka whakarato i tētahi tere rite ki te 1 terabit / tuarua. Ki te taua tirohanga whakamīharo o ia mārama he aha te Itarangi, ka hiahia ki te hono atu ki taua whatunga.