Niaj hnub no peb yuav saib qhov zoo ntawm ob hom kev sib sau ua ke: Hloov Stacking, lossis hloov pawg, thiab Chassis Aggregation, lossis hloov chassis aggregation. Nov yog ntu 1.6 ntawm ICND2 lub ntsiab lus xeem.
Thaum tsim ib lub tuam txhab tsim network, koj yuav tsum tau muab tso rau ntawm Access Switches, uas muaj ntau tus neeg siv computers txuas nrog, thiab Distribution Switches, uas cov keyboards no txuas nrog.
Daim duab qhia Cisco tus qauv rau OSI Layer 3, nrog cov keyboards nkag tau sau npe A thiab faib cov hloov pauv sau npe D. Koj tuaj yeem muaj ntau pua cov khoom siv nyob rau txhua pem teb ntawm koj lub tuam txhab lub tsev, yog li koj yuav tsum xaiv ntawm ob txoj hauv kev los npaj koj cov keyboards.
Txhua tus nkag qib hloov pauv muaj 24 chaw nres nkoj, thiab yog tias koj xav tau 100 chaw nres nkoj, ces qhov ntawd yog 5 qhov hloov pauv. Yog li ntawd, muaj 2 txoj hauv kev: nce tus naj npawb ntawm cov keyboards me me lossis siv ib qho kev hloov loj nrog ntau pua chaw nres nkoj. Lub ntsiab lus CCNA tsis tham txog cov qauv ntawm cov keyboards nrog 100 chaw nres nkoj, tab sis koj tuaj yeem tau txais qhov hloov pauv, nws yog qhov ua tau. Yog li, koj yuav tsum txiav txim siab seb qhov twg haum koj zoo tshaj plaws - ob peb lub keyboards me lossis ib qho loj hloov.
Txhua qhov kev xaiv muaj nws tus kheej zoo. Koj tuaj yeem teeb tsa tsuas yog 1 qhov hloov pauv loj es tsis txhob teeb tsa ob peb lub me me, tab sis kuj tseem muaj qhov tsis zoo - tsuas muaj ib qho kev sib txuas ntawm lub network. Yog hais tias xws li ib tug loj hloov ua tsis tau tejyam, tag nrho cov network yuav vau.
Ntawm qhov tod tes, yog tias koj muaj tsib lub 24-chaw nres nkoj keyboards thiab ib qho ntawm lawv tawg, koj yuav pom zoo tias txoj hauv kev tsis ua haujlwm ntawm ib qho kev hloov pauv ntau dua li lub sijhawm ua tsis tiav ntawm tag nrho tsib lub cuab yeej, yog li 4 lub keyboards ntxiv yuav txuas ntxiv kom ntseeg tau tias muaj nyob hauv lub network. Qhov tsis zoo ntawm qhov kev daws teeb meem no yog qhov xav tau los tswj tsib lub keyboards sib txawv.
Peb daim duab qhia tau hais tias 4 qhov kev nkag mus tau txuas nrog ob lub hloov pauv. Raws li Txheej Txheem 3 ntawm OSI qauv thiab cov kev cai ntawm Cisco network architecture, txhua qhov 4 keyboards no yuav tsum tau txuas nrog ob qho kev hloov pauv. Thaum siv STP raws tu qauv, ib qho ntawm 2 qhov chaw nres nkoj ntawm txhua qhov kev nkag mus txuas nrog rau Distribution hloov yuav raug thaiv. Technically, koj yuav tsis tuaj yeem siv qhov hloov pauv tag nrho bandwidth vim tias ib qho ntawm ob kab kev sib txuas lus ib txwm poob.
Feem ntau tag nrho 4 lub keyboards nyob rau hauv tib lub hauv pem teb nyob rau hauv ib qho chaw khib - daim duab qhia tau hais tias 8 qhov hloov pauv. Muaj tag nrho ntawm 192 qhov chaw nres nkoj hauv khib. Hauv qhov no, ua ntej, koj yuav tsum manually teeb tsa IP chaw nyob rau txhua qhov ntawm cov keyboards no, thiab thib ob, teeb tsa VLANs txhua qhov chaw, thiab qhov no yog qhov mob taub hau loj rau cov thawj coj hauv network.
Muaj ib yam uas tuaj yeem ua rau koj txoj haujlwm yooj yim dua - Hloov Pawg. Hauv peb qhov xwm txheej, qhov no yuav sim ua ke tag nrho 8 qhov hloov pauv mus rau hauv ib qho kev hloov pauv.
Hauv qhov no, ib qho ntawm cov keyboards yuav ua lub luag haujlwm ntawm Master hloov, lossis pawg tswv. Tus thawj coj hauv lub network tuaj yeem txuas rau qhov hloov pauv no thiab ua txhua qhov tsim nyog, uas yuav cia li siv tau rau txhua qhov hloov pauv hauv pawg. Tom qab no, tag nrho 8 keyboards yuav ua hauj lwm raws li ib tug ntaus ntawv.
Cisco siv ntau yam thev naus laus zis los ua ke cov keyboards rau hauv pawg, qhov no cov cuab yeej sab nraud no hu ua "FlexStack module". Muaj qhov chaw nres nkoj ntawm lub vaj huam sib luag tom qab ntawm qhov hloov qhov twg qhov module no tau muab tso rau.
FlexStack muaj ob qhov chaw nres nkoj uas txuas cov cables tau muab tso rau hauv qab: qhov chaw nres nkoj hauv qab ntawm thawj qhov hloov hauv khib yog txuas nrog rau qhov chaw nres nkoj sab saum toj ntawm qhov thib ob, qhov chaw nres nkoj hauv qab ntawm qhov thib ob txuas nrog rau sab saum toj ntawm qhov chaw nres nkoj thib peb, thiab lwm yam. kom txog rau thaum lub thib yim hloov, qhov chaw nres nkoj hauv qab uas txuas nrog rau sab saum toj chaw nres nkoj ntawm thawj hloov. Qhov tseeb, peb tsim lub nplhaib sib txuas ntawm cov keyboards ntawm ib pawg.
Nyob rau hauv cov ntaub ntawv no, ib tug ntawm cov keyboards yog xaiv raws li ib tug thawj coj (Master), thiab tus so - raws li qhev ( qhev ). Tom qab siv FlexStack modules, tag nrho 4 keyboards ntawm peb Circuit Court yuav pib ua 1 logical hloov.
Yog tias Master hloov A1 tsis ua haujlwm, tag nrho lwm cov keyboards hauv pawg yuav tsum tsis ua haujlwm. Tab sis yog tias hloov A3 tawg, lwm qhov peb lub keyboards yuav txuas ntxiv ua haujlwm li 1 lub tswv yim hloov.
Nyob rau hauv thawj lub tswv yim peb muaj 6 lub cev khoom siv, tab sis tom qab kev teeb tsa Hloov Pawg tsuas muaj 3 ntawm lawv: 2 lub cev thiab 1 qhov kev hloov pauv. Nyob rau hauv thawj qhov kev xaiv, koj yuav tsum tau teeb tsa 6 qhov sib txawv, uas yog qhov nyuaj heev, yog li koj tuaj yeem xav txog yuav ua li cas siv sij hawm siv cov txheej txheem ntawm kev teeb tsa ntau pua lub keyboards. Tom qab sib txuas cov keyboards rau hauv ib pawg, peb tau txais ib qho kev nkag mus rau qhov hloov pauv, uas txuas nrog rau txhua qhov kev faib khoom hloov pauv D1 thiab D2 los ntawm plaub txoj kab sib txuas ua ke rau hauv EtherChannel. Txij li thaum peb muaj 3 cov khoom siv, ib qho EtherChannel yuav raug thaiv siv STP los tiv thaiv cov tsheb khiav.
Yog li, qhov kom zoo dua ntawm kev hloov pawg yog lub peev xwm los tswj ib qho kev hloov pauv hloov pauv ntawm ntau lub cev, uas yooj yim rau kev teeb tsa lub network.
Muaj lwm lub tshuab rau kev sib txuas cov keyboards hu ua Chassis Aggregation. Qhov sib txawv ntawm cov thev naus laus zis no yog tias txhawm rau txhim kho Hloov Pawg koj xav tau ib qho tshwj xeeb sab nraud kho vajtse module uas tau muab tso rau hauv qhov hloov.
Nyob rau hauv rooj plaub thib ob, ob peb cov khoom siv tau yooj yim ua ke ntawm ib qho chassis, uas yog vim li cas koj thiaj li hu ua aggregation switch chassis. Hauv daim duab koj pom lub chassis rau Cisco 6500 series keyboards.
Yog tias tsim nyog, koj tuaj yeem ntxiv ntau interface modules - network phaib, thiab tag nrho cov ntawm lawv yuav raug tswj los ntawm ib qho module - tus saib xyuas, uas yog "lub hlwb" ntawm tag nrho cov chassis. Lub chassis no muaj ob tus saib xyuas modules nyob rau hauv rooj plaub ntawm ib qho ntawm lawv tsis ua haujlwm, uas ua rau qee qhov kev rov ua dua, tab sis kuj ua rau muaj kev ntseeg siab hauv network. Feem ntau, xws li chassis kim yog siv nyob rau theem tseem ceeb ntawm lub system. Lub chassis no muaj ob lub zog siv hluav taws xob, txhua tus tuaj yeem siv los ntawm lub zog sib txawv, uas tseem ua rau muaj kev ntseeg siab ntawm lub network thaum muaj hluav taws xob hluav taws xob ntawm ib qho ntawm lub zog hluav taws xob.
Cia peb rov qab mus rau peb daim duab qub, uas tseem muaj EtherChannel ntawm D1 thiab D2. Feem ntau, thaum npaj cov kev sib txuas zoo li no, Ethernet ports tau siv. Thaum siv lub chassis hloov, tsis tas yuav tsum muaj cov modules sab nraud; Ethernet ports yog siv ncaj qha los ua ke cov keyboards. Koj tsuas yog txuas tus thawj interface module D1 mus rau tib lub module D2, thiab qhov thib ob module D1 mus rau lub thib ob module D2, thiab txhua yam ua hauj lwm ua ke los tsim ib tug logical Distribution Layer Hloov.
Yog tias koj saib thawj tus qauv ntawm cov tswv yim, tom qab ntawd txhawm rau txhawm rau sib sau 4 qhov hloov pauv nkag thiab cov khoom faib tawm koj yuav tsum siv Multi-chassis EtherChannel program, uas npaj EtherChannel channel rau txhua qhov kev nkag mus. Koj pom tias nyob rau hauv cov ntaub ntawv no muaj ib tug p2p kev twb kev txuas - "point-to-point", tshem tawm cov tsim ntawm lub tsheb loops, thiab nyob rau hauv cov ntaub ntawv no, tag nrho cov muaj kev sib txuas lus muaj kev koom tes, thiab peb tsis muaj ib tug txo nyob rau hauv throughput.
Feem ntau, Chassis Aggregation yog siv rau cov keyboards ua haujlwm siab, thiab tsis yog rau cov keyboards muaj zog tsawg dua. Cisco architecture tso cai rau kev siv ib txhij ntawm ob qho kev daws teeb meem - Chassis Aggregation thiab Hloov Pawg.
Nyob rau hauv cov ntaub ntawv no, ib qho kev sib faib logical hloov pauv thiab ib qho kev sib txuas lus nkag mus tau tsim. Nyob rau hauv peb lub tswv yim, 8 EtherChannels yuav raug tsim, uas yuav ua hauj lwm raws li ib tug kev sib txuas lus kab, uas yog, yog hais tias peb txuas ib tug faib mus rau ib tug nkag mus rau ib tug cable. Hauv qhov no, "chaw nres nkoj" ntawm ob lub cuab yeej yuav nyob rau hauv lub xeev xa mus, thiab lub network nws tus kheej yuav ua haujlwm ntawm qhov ua tau zoo tshaj plaws, siv bandwidth ntawm tag nrho 8 channel.
Ua tsaug uas koj nyob nrog peb. Koj puas nyiam peb cov ntawv? Xav pom cov ntsiab lus nthuav ntxiv? Txhawb nqa peb los ntawm kev tso ib qho kev txiav txim lossis qhia rau cov phooj ywg, 30% luv nqi rau cov neeg siv Habr ntawm qhov tshwj xeeb analogue ntawm nkag-theem servers, uas tau tsim los ntawm peb rau koj: (muaj nrog RAID1 thiab RAID10, mus txog 24 cores thiab mus txog 40GB DDR4).
Dell R730xd 2 zaug pheej yig dua? Tsuas yog nyob ntawm no hauv Netherlands! Dell R420 - 2x E5-2430 2.2Ghz 6C 128GB DDR3 2x960GB SSD 1Gbps 100TB - los ntawm $ 99! Nyeem txog
Tau qhov twg los: www.hab.com