Nhasi tichatarisa zvakanakira marudzi maviri ekuchinja aggregation: Chinja Stacking, kana chinja mastacks, uye Chassis Aggregation, kana chinja chassis aggregation. Ichi chikamu 1.6 cheiyo ICND2 bvunzo musoro.
Paunenge uchigadzira dhizaini yetiweki yekambani, iwe unozofanirwa kupa yekuiswa kweAccess Switches, kune akawanda evashandisi makomputa akabatana, uye Distribution Swichi, kune aya maswiti ekuwana akabatana.
Dhiagiramu inoratidza modhi yeCisco yeOSI Layer 3, ine maswichi ekupinda akanyorwa A uye maswichi ekugovera akanyorwa kuti D. Unogona kuva nemazana emidziyo pauriri hwega hwega hwechivako chekambani yako, saka uchafanira kusarudza pakati penzira mbiri dzekuronga maswichi ako.
Imwe neimwe yeAccess level switch ine makumi maviri nemana madoko, uye kana iwe uchida zana madoko, saka anenge mashanu akadaro switch. Naizvozvo, kune nzira mbiri: kuwedzera nhamba yezvidiki diki kana kushandisa imwe hombe switch ine mazana ezviteshi. Musoro weCCNA haukurukure mhando dzema switch ane zana madoko, asi unogona kuwana switch yakadaro, zvinogoneka. Saka, iwe unofanirwa kusarudza izvo zvinokunakira iwe - akati wandei madiki switch kana imwe hombe switch.
Imwe neimwe sarudzo ine zvayakanakira. Iwe unogona kugadzirisa chete 1 hombe switch pachinzvimbo chekumisikidza akati wandei madiki, asi pane zvakare yakashata - pane imwe chete poindi yekubatanidza kune network. Kana shanduko yakakura kudaro ikatadza, network yese inodonha.
Kune rimwe divi, kana uine mashanu 24-port switch uye imwe yacho ikatsemuka, unobvuma kuti mukana wekutadza kweimwe switch wakakura kwazvo pane mukana wekukundikana panguva imwe chete yezvishandiso zvishanu zvese, saka 4 switch yasara ichaita. ramba uchiona kuvepo kwe network. Kuipa kwemhinduro iyi ndiko kudiwa kwekugadzirisa shanu dzakasiyana switch.
Dhiagiramu yedu inoratidza 4 maswiti ekuwana akabatana kune maviri ekugovera switch. Zvinoenderana neLayer 3 yeOSI modhi uye zvinodikanwa zveCisco network architecture, imwe neimwe yeaya 4 switch anofanirwa kubatana kune ese ari maviri ekugovera switch. Paunenge uchishandisa STP protocol, imwe yemadoko maviri ega ega Access switch yakabatana neDistribution switch ichavharwa. Nehunyanzvi, haugone kushandisa switch's yakazara bandwidth nekuti imwe yemitsara miviri yekutaurirana inogara iri pasi.
Kazhinji ese mana switch anowanikwa pauriri humwe mune yakajairwa rack - iyo foto inoratidza 4 yakaiswa switch. Kune huwandu hwe8 zviteshi mune rack. Muchiitiko ichi, chekutanga, iwe unofanirwa kugadzirisa nemaoko ma IP kero kune imwe neimwe yeaya switch, uye chechipiri, gadzirisa maVLAN kwese kwese, uye uku kurwadza kwemusoro kune network maneja.
Pane chinhu chinogona kuita kuti basa rako rive nyore - Chinja Stack. Kwatiri, chinhu ichi chinoedza kusanganisa ese 8 switch mune imwechete inonzwisisika switch.
Muchiitiko ichi, imwe yekuchinja ichaita basa reMaster switch, kana stack master. Mutariri wetiweki anogona kubatana neiyi switch uye kuita ese anodiwa marongero, ayo anozoshanda otomatiki kune ese ma switch ari mustack. Mushure meizvi, ese 8 switch achashanda semudziyo mumwe.
Cisco inoshandisa tekinoroji dzakasiyana siyana kubatanidza ma switch kuita mastacks, mune iyi kesi iyi yekunze mudziyo inonzi "FlexStack module". Kune chiteshi kuseri kwepaneru yekuchinja uko iyi module inoiswa.
FlexStack ine zviteshi zviviri zvinopinzwa tambo dzekubatanidza: chiteshi chezasi cheshanduko yekutanga mune rack yakabatana kune yepamusoro chiteshi chechipiri, chiteshi chezasi chechipiri chakabatana kune chepamusoro chiteshi chechitatu, zvichingodaro. kusvika pakuchinja kwechisere, chiteshi chepasi chakabatana kune chepamusoro chiteshi chekutanga switch. Muchokwadi, isu tinogadzira mhete yekubatanidza yekuchinja kweimwe stack.
Muchiitiko ichi, imwe yekuchinja inosarudzwa semutungamiri (Tenzi), uye vamwe vose - sevaranda (Muranda). Mushure mekushandisa maFlexStack modules, ese mana switch edunhu redu anotanga kuita se 4 zvine musoro switch.
Kana Master switch A1 ikatadza, mamwe ese ma switch ari mustack anomira kushanda. Asi kana chinja A3 ikaputsika, mamwe matatu anochinja acharamba achishanda se 1 zvine musoro switch.
Muchirongwa chekutanga takanga tine 6 michina yemuviri, asi mushure mekugadzirisa Switch Stack paingova ne3 chete yadzo: 2 yemuviri uye 1 inonzwisisika switch. Pasi pekutanga sarudzo, iwe unofanirwa kugadzirisa 6 dzakasiyana switch, izvo zvatove kunetsa, saka unogona kufungidzira kuti inopedza nguva sei maitiro ekugadzira nemaoko mazana ekuchinja. Mushure mekubatanidza maswiti kuita stack, takagamuchira imwe inonzwisisika yekuwana switch, iyo yakabatana kune imwe neimwe yekugovera switch D1 uye D2 nemitsetse mina yekutaurirana yakasanganiswa muEtherChannel. Sezvo tine zvigadzirwa zve 3, imwe EtherChannel ichavharwa uchishandisa STP kudzivirira zvishwe zvemigwagwa.
Saka, mukana weiyo switch stack kugona kubata imwe inonzwisisika switch pane akati wandei maturusi emuviri, ayo anorerutsa maitiro ekumisikidza network.
Kune imwe tekinoroji yekubatanidza switch inodaidzwa kuti Chassis Aggregation. Musiyano uripo pakati peaya matekinoroji ndewekuti kuronga Shanduko Stack unoda yakakosha yekunze hardware module iyo inoiswa mune switch.
Muchiitiko chechipiri, zvishandiso zvakati wandei zvinongobatanidzwa pane imwechete yakajairika chassis, semhedzisiro yaunoumba iyo inonzi aggregation switch chassis. Mumufananidzo unoona chassis yeCisco 6500 series switches. Inobatanidza makadhi mana network ane 4 ports imwe neimwe, saka chikwata ichi chine 24 ports.
Kana zvichidikanwa, unogona kuwedzera mamwe madhizaini mamodule - makadhi etiweki, uye ese anodzorwa nemodule imwe - mutariri, inova "uropi" hwese chassis. Iyi chassis ine maviri maneja mamodule kana imwe yacho ikatadza, izvo zvinogadzira imwe redundancy, asi zvakare inowedzera kuvimbika kwetiweki. Kazhinji, chassis inodhura yakadaro inoshandiswa padanho repakati rehurongwa. Iyi chassis ine magetsi maviri emagetsi, imwe neimwe inogona kushandiswa kubva kune imwe nzvimbo yemagetsi, iyo inowedzerawo kuvimbika kwetiweki mumamiriro ekudzima kwemagetsi pane imwe yemagetsi.
Ngatidzokere kudhiyagiramu yedu yepakutanga, uko kune zvakare EtherChannel pakati peD1 neD2. Kazhinji, pakuronga kubatana kwakadaro, Ethernet ports inoshandiswa. Paunenge uchishandisa switch chassis, hapana ekunze mamodule anodiwa; Ethernet ports inoshandiswa zvakananga kusanganisa switch. Iwe unongobatanidza yekutanga interface module D1 kune imwecheteyo module D2, uye yechipiri module D1 kune yechipiri module D2, uye zvese zvinoshanda pamwechete kugadzira imwe inonzwisisika Distribution Layer Switch.
Kana iwe ukatarisa shanduro yekutanga yechirongwa, ipapo kuunganidza 4 mafungu ekuwana uye sutu yekugovera iwe unofanirwa kushandisa Multi-chassis EtherChannel chirongwa, iyo inoronga EtherChannel migero kune yega yega yekuwana switch. Iwe unoona kuti munyaya iyi pane p2p yekubatanidza - "point-to-point", kubvisa kuumbwa kwemigwagwa yemigwagwa, uye munyaya iyi mitsara yose iripo yekukurukurirana inobatanidzwa, uye isu hatina kuderedzwa kwekubuda.
Kazhinji, Chassis Aggregation inoshandiswa kune yakakwirira-inoshanda switch, uye kwete kune mashoma ane simba ekuwana switch. Cisco architecture inobvumira kushandiswa panguva imwe chete kwezvose zviri zviviri mhinduro - Chassis Aggregation uye Chinja Stack.
Muchiitiko ichi, imwe yakajairika inonzwisisika yekugovera switch uye imwe yakajairika inonzwisisika yekuwana switch inoumbwa. Muchirongwa chedu, 8 EtherChannels ichasikwa, iyo ichashanda semutsara wekutaurirana, ndiko kuti, sekunge takabatanidza shanduko imwe yekugovera kune imwe shanduko yekuwana netambo imwe. Muchiitiko ichi, "zviteshi" zvezvishandiso zvose zviri zviviri zvichange zviri mumamiriro ekutumira, uye network pachayo ichashanda pakushanda kwepamusoro, uchishandisa bandwidth ye8 chiteshi.
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Source: www.habr.com