Kodi mtengo wa mtengo wa Spain ndi uti?

Protocol ya mtengo, nthawi zina imangotchulidwa kuti mtengo wa Spain, ndiye ufa wa magetsi, ndikuwongolera maukonde amakono a Ethernet, kuwongolera magalimoto m'njira yoyenera malinga ndi nyengo yeniyeni yotengera momwe zinthu ziliri.

Kutengera ndi algorithm yopangidwa ndi Algorith Computer Computer Computer Sravia Perlman pomwe amagwira ntchito pokonzekera digito (Dec) mu 1985, cholinga chachikulu cha mtengo wa ma sparsant ndi njira zolumikizirana pamitu yovuta yaintaneti. Monga ntchito yachiwiri, mtengo wowunda uja ungakayikire mapazi ozungulira malo osonyeza kuti kulumikizana kumatha kugunda pamaneti omwe angasokoneze.

Mtengo wa Mtengo wa Mtengo wa Spanch vs.

Mabungwe akangoyamba kungoyambitsa makompyuta awo mu 1980s, imodzi mwazosintha zodziwika kwambiri ndi ma network. Mwachitsanzo, IBM idayambitsa ukadaulo wa proprietry Exkisowry mu 1985.

Mutu wamphero wa mphete, malo aliwonse amalumikizana ndi ena awiri, omwe amakhala patsogolo pake pa mphete ndi omwe ali kumbuyo kwake. Zizindikiro zimangoyendayenda mphete munjira imodzi, ndi malo aliwonse panjira iliyonse ndikuyika mapaketi aliwonse ndikuyenda mozungulira mphete.

Ngakhale kuti ma network osavuta a mphete amagwira ntchito bwino pakakhala makompyuta ochepa, mphete sizikhala zosakwanira pomwe mazana mazana kapena zida zikwizikwi zimawonjezeredwa ku netiweki. Makompyuta angafunike kutumiza mapaketi kudutsa mazana a mazana a zinthu kuti agawane zidziwitso ndi dongosolo lina limodzi m'chipinda choyandikana nawo. Bandwidth ndi kufalitsanso kumakhala vuto pomwe magalimoto amangoyenda mbali imodzi, popanda pulani yosunga ndalama ngati mawonekedwe atathyoledwa kapena kukhazikika kwambiri.

Mu 90s, monga Ethernet (100mbit / sect. Mphete inatha.

Momwe mtengo wa Spain umagwirira ntchito

[Kulembetsa tsopano kwa chochitika chomaliza cha chaka! Zolemba zapadera zaluso zomwe zilipo. Tsokera New York, Novembala 8]

Mtengo wowundawu ndi protocol yotsogola yamapakitala. Ndi gawo limodzi lagalimoto yapolisi ndi gawo limodzi la Injini yaboma la ma network omwe amayenda kudutsa. Imakhala ku losanjikiza 2 (ulalo wa data wa data), kotero ndikungokhudzidwa ndi mapaketi oyenda kupita komwe akupita, osati mapaketi amtundu wanji omwe alipo, kapena zomwe ali nazo.

Mtengo wa Spain wayamba kukhala wovuta kwambiri kuti kugwiritsa ntchito kwake kumafotokozedwaIEEEE 802.1D Intaneti muyezo. Monga tafotokozera muyezo, njira imodzi yogwira yokha ikhoza kukhala pakati pa magawo awiri kapena malo kuti azigwira ntchito moyenera.

Mtengo wowumbika wapangidwa kuti uchotse mwayi woti adutse pakati pa magawo a pa intaneti azikhala pachiwopsezo. Mwambiri, malupu akusokoneza algorithm yokhazikitsidwa m'magawo a netiweki, ndikupangitsa kuti chipangizocho chisadziwe komwe angatumize mapaketi. Izi zitha kubweretsanso mafelemu kapena kutumiza mapaketi obwereza ku malo angapo. Mauthenga amatha kubwerezedwa. Kulumikizana kumatha kubwerera kwa wotumiza. Itha kuwononganso netiweki ngati malupu ambiri kuyamba kuchitika, kudya kwambiri bandwidth popanda phindu lililonse mukamatsekeranso magalimoto ena osakhazikika.

Protocol ya mtengoImasiya malupu kuti apangidweMwa kutseka konsekonse koma njira imodzi yomwe ingatheke papaketi iliyonse ya data. Kusintha pa network gwiritsani ntchito mtengo wotanthauzira mizu ndi milatho yomwe imatha kuyenda, ndikutseka masitepe obwereza, kuwapatsa mwayi pomwe njira yoyamba ikupezeka.

Zotsatira zake ndikuti ma network aintaneti amayenda mosasamala mosasamala momwe ma network amakhala ovuta kapena ovuta. Mwanjira, mtengo wowunda ukupanga njira imodzi kudzera pa netiweki kuti muyende pogwiritsa ntchito mapulogalamu omwewo omwe amagwiritsa ntchito ma network omwe amagwiritsa ntchito ma hardware pa intaneti.

Ubwino wowonjezera wa mtengo wa Spanning

Chifukwa choyambirira kugwiritsidwa ntchito ndikuchotsa mwayi wokhala ndi malungo omwe ali pa netiweki. Koma pali zabwino zinanso.

Chifukwa mtengo wowoneka bwino ukuyang'ana masitepe omwe amapezeka pamapaketi a data kuti ayendemo, imatha kuzindikira ngati malo omwe ali pafupi ndi njira imodzi yolemala. Izi zitha kuchitika pazifukwa zosiyanasiyana kuyambira kulephera kwa hardware ku masinthidwe atsopano. Itha kukhala kwakanthawi kochepa malinga ndi bandwidth kapena zinthu zina.

Mtengo wolusa ukazindikira kuti njira yoyamba ilibenso ntchito, imatha kutsegula njira ina yomwe idatsekedwa kale. Itha kutumiza deta kuzungulira chovuta, pamapeto pake ndikupanga momwe njira yatsopano yoyambiranso, kapena kutumiza mapaketi kubwerera ku Bridge Mlatho woyambirira uyeneranso.

Pomwe mtengo woyambirira wa ku Spain udafulumira pakupanga maulalo atsopanowo monga akufunira, mu 2001 a Ieee adayambitsa mtengo wa mitengo ya mitengo ya SPAND. Amatchedwanso mtundu wa protocol wa 802.1.

Ndipo pomwe ma Rsstp adayambitsa njira zatsopano komanso maudindo a Bridge kuti athe kugwira ntchito, adapangidwanso kuti azigwirizana mokwanira ndi mtengo woyamba wa Spain. Chifukwa chake ndizotheka zida ndi mitundu yonse ya protocol kuti igwiritsidwe ntchito limodzi pa intaneti yomweyo.

Zolakwika za mtengo wa Spanning

Pomwe mtengo wa SPING ukukhala wosangalatsa pazaka zambiri akutsatira mawu oyamba, pali ena omwe amatsutsana kuti ndiNthawi yabwera. Vuto lalikulu kwambiri la mtengo wa Spain ndilakuti limakhala ndi malungo omwe angakhale pa netiweki potseka njira zomwe zimatha kuyenda. Mu netiweki iliyonse yomwe mwapatsidwa pogwiritsa ntchito mtengo wozungulira, pafupifupi 40% ya njira zomwe zingatheke.

Mosavuta kwambiri ma netransi, monga omwe amapezeka m'malo opezeka ndi malo, kuthekera kokulira msanga kukwaniritsa zofunika kukwaniritsa ndikofunikira. Popanda malire omwe akhazikitsidwa ndi mtengo wowala, malo osungira deta amatha kutseguka kotopetsa kwambiri popanda kufunika kwa zida zowonjezera pa intaneti. Uwu ndi mtundu wa zochitika zachitsulo, chifukwa malo ovuta a pa intaneti ndi chifukwa chake mtengo wokhwima udapangidwa. Ndipo tsopano chitetezo choperekedwa ndi protocol motsutsana ndi kulowera kulowera ndi, m'njira inayake.

Mtundu woyengeka wa protocol wotchedwa mtengo wonenepa (MSTP) adapangidwa kuti agwiritse ntchito machesi am'madzi ndikupangitsa njira zambiri kukhala yotseguka nthawi yomweyo, pomwe amateteza malupu kuti apangidwe. Koma ngakhale ndi MSP, njira zingapo zomwe zingatheke kutsekedwa pa intaneti iliyonse yomwe ikugwiritsa ntchito protocol.

Pakhala pali zoyeserera zambiri, zoyeserera zodziyimira panja kukonza zoletsa bandwidth ya mtengo wa Spain pazaka zapitazi. Pomwe opanga ena aja achita bwino pantchito yawo, ambiri sagwirizana kwathunthu ndi ma protocol, mabungwe amatanthauzo ayenera kugwiritsa ntchito kusintha komwe sikumafunikira amasintha mtengo wothamanga. Nthawi zambiri, mtengo wokhalabe ndi zokongoletsera zingapo za mtengo wowoneka bwino sizabwino.

Kodi mtengo wowunjika udzapitilira mtsogolo?

Kuphatikiza pa zoperewera ku Bandwidth mtengo wotseka njira zapaukonde, palibe lingaliro lambiri kapena kuyeserera kuti musinthe protocol. Ngakhale kuti ieee nthawi zina imatulutsa zosintha kuti zisayese bwino, nthawi zonse zimakhala zogwirizana ndi mitundu ya protocol yomwe ilipo.

Mwanjira ina, mtengo wokusandutsa ulamuliro wa "Ngati sunaswe, usazikonza." Mtengo wa Spanning umayenda mosamala kumbuyo kwa ma network ambiri kuti asunge magalimoto, ndikupangitsa malupu osokoneza bongo kuti asapange malo osokoneza bongo kuti ogwiritsa ntchito awo sakudziwa kuti ndi gawo la tsiku lake - ntchito zamasiku. Pakadali pano, pa byfirkend, oyang'anira amatha kuwonjezera zida zatsopano pamalo awo popanda lingaliro lochulukirapo ngati kuti sangathe kulumikizana ndi ma netiweki ena onse kapena ayi.

Chifukwa cha zonsezo, ndiye kuti mtengo wowuma udzagwiritsidwa ntchito kwa zaka zambiri zikubwerazi. Pakhoza kukhala zosintha zazing'onozi nthawi ndi nthawi, koma njira ya mtengo wa mitengo ya mtengo ndi zonsezi zomwe zimachitika mwina sizingakhalepo.