Lero tiwona ubwino wa mitundu iwiri yophatikizira ma switch: Sinthani Stacking, kapena kusintha masitaki, ndi Chassis Aggregation, kapena kusinthana kwa chassis. Ili ndi gawo 1.6 la mutu wa mayeso a ICND2.
Mukamapanga mapangidwe amtundu wamakampani, muyenera kupereka zoikamo Zosintha Zofikira, pomwe makompyuta ambiri ogwiritsa ntchito amalumikizidwa, ndi Kusintha kwa Distribution, komwe ma switch awa amalumikizidwa.
Chithunzichi chikuwonetsa chitsanzo cha Cisco cha OSI Layer 3, chokhala ndi masiwichi olowa olembedwa A ndi masiwichi ogawa olembedwa D. Mutha kukhala ndi zida mazana pansanjika iliyonse ya nyumba yanu yamakampani, ndiye kuti muyenera kusankha pakati pa njira ziwiri zosinthira ma switch anu.
Iliyonse ya masinthidwe amtundu wa Access ili ndi madoko 24, ndipo ngati mukufuna madoko 100, ndiye kuti masiwichi 5 otere. Chifukwa chake, pali njira ziwiri: onjezani kuchuluka kwa zosintha zazing'ono kapena gwiritsani ntchito switch imodzi yayikulu yokhala ndi madoko mazana. Mutu wa CCNA sukambirana za masinthidwe okhala ndi madoko 2, koma mutha kupeza kusintha kotere, ndizotheka. Chifukwa chake, muyenera kusankha chomwe chimakuyenererani - ma switch ang'onoang'ono angapo kapena switch imodzi yayikulu.
Njira iliyonse ili ndi ubwino wake. Mutha kusintha kusintha kwakukulu kwa 1 m'malo mokhazikitsa angapo ang'onoang'ono, koma palinso vuto - pali mfundo imodzi yokha yolumikizira netiweki. Ngati kusintha kwakukulu koteroko sikulephera, maukonde onse adzagwa.
Kumbali ina, ngati muli ndi masiwichi asanu a 24-doko ndipo imodzi mwa iwo imasweka, mudzavomereza kuti mwayi wolephera kusinthana kumodzi ndi waukulu kwambiri kuposa mwayi wolephera munthawi yomweyo zida zonse zisanu, kotero masiwichi 4 otsalawo atha. pitilizani kuwonetsetsa kukhalapo kwa maukonde. Choyipa cha yankho ili ndikufunika kowongolera masiwichi asanu osiyanasiyana.
Chithunzi chathu chikuwonetsa masiwichi ofikira 4 olumikizidwa ndi masiwichi awiri ogawa. Malinga ndi Gawo 3 lachitsanzo cha OSI komanso zofunikira za zomangamanga za Cisco network, masiwichi aliwonse a 4wa ayenera kulumikizidwa ndi masiwichi onse ogawa. Mukamagwiritsa ntchito protocol ya STP, imodzi mwama doko a 2 a switch iliyonse ya Access yolumikizidwa ku Distribution switch idzatsekedwa. Mwaukadaulo, simungathe kugwiritsa ntchito bandwidth yonse yosinthira chifukwa imodzi mwamizere iwiri yolumikizirana imakhala pansi.
Nthawi zambiri masiwichi 4 onse amakhala pansi pachoyikapo wamba - chithunzi chikuwonetsa masiwichi 8 omwe adayikidwa. Pali madoko okwana 192 muchoyikamo. Pankhaniyi, choyamba, muyenera kukonza ma adilesi a IP pa chilichonse mwa masiwichi awa, ndipo kachiwiri, sinthani ma VLAN kulikonse, ndipo ichi ndi mutu waukulu kwa woyang'anira maukonde.
Pali chinthu chomwe chingapangitse ntchito yanu kukhala yosavuta - Sinthani Stack. Kwa ife, chinthu ichi chiyesa kuphatikiza masiwichi onse 8 kukhala chosinthira chimodzi chomveka.
Pankhaniyi, imodzi mwa masinthidwewo itenga gawo la Master switch, kapena stack master. Woyang'anira ma netiweki amatha kulumikizana ndi switch iyi ndikuchita zosintha zonse zofunika, zomwe zimangogwira ntchito pazosintha zonse mu stack. Pambuyo pake, masiwichi onse 8 adzagwira ntchito ngati chipangizo chimodzi.
Cisco imagwiritsa ntchito matekinoloje osiyanasiyana kuphatikiza masinthidwe kukhala ma stacks, pakadali pano chipangizo chakunja ichi chimatchedwa "FlexStack module". Pali doko kumbuyo kwa chosinthira pomwe gawoli limayikidwa.
FlexStack ili ndi madoko awiri momwe zingwe zolumikizira zimayikidwa: doko lapansi la chosinthira choyamba muchoyikapo limalumikizidwa ndi doko lapamwamba lachiwiri, doko lakumunsi lachiwiri limalumikizidwa ndi doko lachitatu, ndi zina zotero. mpaka kusintha kwachisanu ndi chitatu, doko lakumunsi lomwe limalumikizidwa ku doko lapamwamba la switch yoyamba. M'malo mwake, timapanga kulumikizana kwa mphete kwa masiwichi a stack imodzi.
Pankhaniyi, imodzi mwa masiwichi amasankhidwa kukhala mtsogoleri (Mbuye), ndipo ena onse - akapolo (Kapolo). Mukatha kugwiritsa ntchito ma module a FlexStack, masinthidwe onse 4 a dera lathu ayamba kuchita ngati 1 kusintha koyenera.
Ngati Master switch A1 ikalephera, masiwichi ena onse mu stack adzasiya kugwira ntchito. Koma ngati kusintha kwa A3 kusweka, masiwichi ena atatuwo apitiliza kugwira ntchito ngati 1 kusintha koyenera.
Pachiwembu choyambirira tinali ndi zida zakuthupi 6, koma titakonza Zosintha Zosintha panali 3 yokha: 2 yakuthupi ndi 1 kusintha koyenera. Pansi pa njira yoyamba, muyenera kukonza masiwichi 6 osiyanasiyana, omwe ali ovuta kale, kotero mutha kulingalira momwe zimawonongera nthawi njira yosinthira pamanja mazana a masiwichi. Titaphatikiza masiwichi kukhala stack, tidalandira chosinthira chimodzi chomveka cholumikizira, chomwe chimalumikizidwa ndi masiwichi aliwonse a D1 ndi D2 ndi mizere inayi yolumikizirana yophatikizidwa mu EtherChannel. Popeza tili ndi zida za 3, EtherChannel imodzi idzatsekedwa pogwiritsa ntchito STP kuteteza malupu a magalimoto.
Chifukwa chake, mwayi wosinthira masinthidwe ndikutha kuwongolera chosinthira chimodzi m'malo mwa zida zingapo zakuthupi, zomwe zimathandizira kukhazikitsa maukonde.
Palinso ukadaulo wina wophatikizira masiwichi otchedwa Chassis Aggregation. Kusiyanitsa pakati pa matekinoloje awa ndikuti kuti mukonzekere Kusintha kwa Switch mufunika gawo lapadera lakunja la hardware lomwe limayikidwa mu switch.
Munkhani yachiwiri, zida zingapo zimangophatikizidwa pagalimoto imodzi wamba, chifukwa chake mumapanga otchedwa aggregation switch chassis. Pachithunzichi mukuwona chassis ya masiwichi amtundu wa Cisco 6500. Imaphatikiza makhadi a netiweki 4 okhala ndi madoko 24 aliwonse, kotero gawo ili lili ndi madoko 96.
Ngati ndi kotheka, mukhoza kuwonjezera ma modules owonetsera - makadi ochezera a pa Intaneti, ndipo onsewo adzayang'aniridwa ndi gawo limodzi - woyang'anira, yemwe ndi "ubongo" wa galimoto yonse. Chassis iyi ili ndi ma module awiri oyang'anira ngati imodzi ikalephera, zomwe zimapangitsa kuti pakhale kuperewera, komanso kumawonjezera kudalirika kwa maukonde. Kawirikawiri, ma chassis okwera mtengowo amagwiritsidwa ntchito pakatikati pa dongosolo. Chassis ichi chili ndi mphamvu ziwiri, iliyonse yomwe imatha kuyendetsedwa kuchokera kumagetsi osiyanasiyana, zomwe zimawonjezeranso kudalirika kwa ma netiweki pakatha magetsi pagawo limodzi lamagetsi.
Tiyeni tibwerere ku chithunzi chathu choyambirira, komwe kulinso EtherChannel pakati pa D1 ndi D2. Nthawi zambiri, pokonzekera kulumikizana koteroko, madoko a Ethernet amagwiritsidwa ntchito. Mukamagwiritsa ntchito switch chassis, palibe ma module akunja omwe amafunikira; madoko a Ethernet amagwiritsidwa ntchito mwachindunji kuphatikiza masiwichi. Mukungolumikiza gawo loyamba la mawonekedwe D1 ku gawo lomwelo D2, ndi gawo lachiwiri D1 ku gawo lachiwiri la D2, ndipo zonse zimagwira ntchito limodzi kuti mupange Switch imodzi yomveka Yogawa.
Ngati muyang'ana ndondomeko yoyamba yachiwembu, ndiye kuti muphatikize masiwichi ofikira 4 ndi gawo logawa muyenera kugwiritsa ntchito pulogalamu ya Multi-chassis EtherChannel, yomwe imakonza njira za EtherChannel pakusintha kulikonse. Mukuwona kuti pankhaniyi pali kulumikizana kwa p2p - "point-to-point", kuthetsa mapangidwe a malupu apamsewu, ndipo pakadali pano mizere yonse yolankhulirana yomwe ilipo ikukhudzidwa, ndipo tilibe kuchepetsa kutulutsa.
Nthawi zambiri, Chassis Aggregation imagwiritsidwa ntchito posinthira magwiridwe antchito kwambiri, osati ma switch amphamvu ochepa. Zomangamanga za Cisco zimalola kugwiritsa ntchito mayankho onse awiri munthawi imodzi - Chassis Aggregation ndi Switch Stack.
Pachifukwa ichi, chosinthira chimodzi chodziwika bwino chogawa ndi cholumikizira chimodzi chodziwika bwino chimapangidwa. Muchiwembu chathu, 8 EtherChannels idzapangidwa, yomwe idzagwira ntchito ngati chingwe chimodzi cholankhulirana, ndiko kuti, ngati tagwirizanitsa kusintha kogawa kumodzi kolowera ndi chingwe chimodzi. Pachifukwa ichi, "madoko" a zipangizo zonse ziwiri adzakhala mumtundu wotumizira, ndipo intaneti yokha idzagwira ntchito kwambiri, pogwiritsa ntchito bandwidth ya 8 njira zonse.
Zikomo chifukwa chokhala nafe. Kodi mumakonda zolemba zathu? Mukufuna kuwona zambiri zosangalatsa? Tithandizeni potipatsa oda kapena kulimbikitsa anzathu, 30% kuchotsera kwa ogwiritsa ntchito a Habr pa analogi yapadera yamaseva olowera, omwe tinapangira inu: (ikupezeka ndi RAID1 ndi RAID10, mpaka 24 cores mpaka 40GB DDR4).
Dell R730xd 2 nthawi zotsika mtengo? Pokhapokha ku Netherlands! Dell R420 - 2x E5-2430 2.2Ghz 6C 128GB DDR3 2x960GB SSD 1Gbps 100TB - kuchokera $99! Werengani za
Source: www.habr.com