Cia peb xav tias STP yog nyob rau hauv lub xeev ntawm convergence. Yuav ua li cas yog hais tias kuv coj ib tug cable thiab txuas mus rau H ncaj qha mus rau lub hauv paus hloov A? Hauv paus Choj yuav "pom" tias nws muaj qhov chaw nres nkoj tshiab thiab yuav xa BPDU hla nws.
Hloov H, tau txais cov thav duab no nrog xoom tus nqi, yuav txiav txim siab tus nqi ntawm txoj kev los ntawm qhov chaw nres nkoj tshiab li 0 + 19 = 19, txawm tias tus nqi ntawm nws qhov chaw nres nkoj hauv paus yog 76. Tom qab qhov no, qhov chaw nres nkoj hloov H. , uas yav dhau los nyob rau hauv lub xeev tsis taus, yuav dhau los ntawm txhua theem kev hloov pauv thiab hloov mus rau hom kis tau tus mob tsuas yog tom qab 50 vib nas this. Yog tias lwm yam khoom siv txuas nrog rau qhov hloov pauv no, ces lawv txhua tus yuav poob kev sib txuas rau lub hauv paus hloov thiab mus rau lub network tag nrho rau 50 vib nas this.
Hloov G ua tib yam, tau txais los ntawm kev hloov H ib BPDU thav duab nrog tus nqi ceeb toom ntawm 19. Nws hloov tus nqi ntawm nws qhov chaw nres nkoj xa mus rau 19 + 19 = 38 thiab rov muab nws ua qhov chaw nres nkoj tshiab, vim tias tus nqi ntawm nws. qub hauv paus chaw nres nkoj yog 57, uas ntau dua 38. Qhov no pib tag nrho cov theem ntawm reassignment chaw nres nkoj dua, kav ntev li 50 vib nas this, thiab, thaum kawg, tag nrho cov network collapses.
Tam sim no cia saib dab tsi yuav tshwm sim hauv qhov xwm txheej zoo sib xws thaum siv RSTP. Lub hauv paus hloov pauv yuav xa BPDU tib txoj kev mus rau qhov hloov H txuas nrog nws, tab sis tam sim ntawd tom qab ntawd nws yuav thaiv nws qhov chaw nres nkoj. Tau txais cov ncej no, hloov N yuav txiav txim siab tias txoj kev no muaj tus nqi qis dua nws qhov chaw nres nkoj hauv paus, thiab yuav thaiv nws tam sim ntawd. Tom qab no, N yuav xa Daim Ntawv Pom Zoo rau lub hauv paus hloov nrog kev thov kom qhib qhov chaw nres nkoj tshiab, vim tias nws cov nqi tsawg dua tus nqi ntawm qhov chaw nres nkoj hauv paus. Tom qab lub hauv paus hloov pauv pom zoo rau qhov kev thov, nws yuav qhib nws qhov chaw nres nkoj thiab xa Daim Ntawv Pom Zoo hloov H, tom qab ntawd tom kawg yuav ua qhov chaw nres nkoj tshiab nws qhov chaw nres nkoj hauv paus.
Nyob rau tib lub sijhawm, ua tsaug rau Kev Pom Zoo / Daim Ntawv Pom Zoo Mechanism, kev hloov pauv ntawm lub hauv paus chaw nres nkoj yuav tshwm sim tam sim ntawd, thiab txhua yam khoom siv txuas nrog hloov H yuav tsis poob kev sib txuas nrog lub network.
Los ntawm muab lub hauv paus chaw nres nkoj tshiab, hloov N yuav tig lub hauv paus chaw nres nkoj qub mus rau lwm qhov chaw nres nkoj. Tib yam yuav tshwm sim nrog hloov G - nws yuav pauv cov lus pom zoo / Daim Ntawv Pom Zoo nrog hloov H, muab lub hauv paus chaw nres nkoj tshiab thiab thaiv cov chaw nres nkoj ntxiv. Tom qab ntawd cov txheej txheem yuav txuas ntxiv mus rau ntu txuas txuas ntxiv nrog hloov F.
Hloov F, tau txheeb xyuas cov nqi, yuav pom tias txoj hauv kev mus rau hauv paus hloov los ntawm qhov chaw nres nkoj qis yuav raug nqi 57, txawm tias qhov tseeb tias txoj kev uas twb muaj lawm los ntawm qhov chaw nres nkoj sab saud raug nqi 38, thiab yuav tawm txhua yam raws li yog. Tau kawm txog qhov no, hloov G yuav thaiv qhov chaw nres nkoj ntsib F thiab yuav xa cov tsheb mus rau hauv paus hloov raws GHA txoj kev tshiab.
Txog thaum hloov F tau txais Daim Ntawv Pom Zoo / Daim Ntawv Pom Zoo los ntawm kev hloov G, nws yuav khaws nws qhov chaw nres nkoj hauv qab los tiv thaiv lub voj. Yog li, koj tuaj yeem pom tias RSTP yog cov txheej txheem ceev heev uas tsis tsim cov teeb meem tshwm sim hauv STP ntawm lub network.
Tam sim no cia peb mus saib cov lus txib. Koj yuav tsum mus rau hauv lub ntiaj teb no hloov configuration hom thiab xaiv PVST los yog RPVST hom siv lub spanning-ntoo hom hais kom ua . Tom qab ntawd koj yuav tsum txiav txim siab yuav hloov qhov tseem ceeb ntawm VLAN tshwj xeeb. Txhawm rau ua qhov no, siv cov lus txib spanning-ntoo vlan <VLAN tus lej> qhov tseem ceeb <tus nqi>. Los ntawm cov yeeb yaj kiab kawg, koj yuav tsum nco ntsoov tias qhov tseem ceeb yog ntau yam ntawm 4096 thiab lub neej ntawd tus lej no yog 32768 ntxiv rau VLAN tus lej. Yog tias koj xaiv VLAN1, qhov tseem ceeb tshaj plaws yuav yog 32768 + 1 = 32769.
Vim li cas koj thiaj li yuav tsum tau hloov qhov tseem ceeb ntawm kev tes hauj lwm? Peb paub tias BID muaj qhov tseem ceeb ntawm tus lej thiab qhov chaw nyob MAC. Lub cuab yeej MAC chaw nyob tsis tuaj yeem hloov pauv; nws muaj tus nqi tas li, yog li koj tuaj yeem hloov qhov tseem ceeb ntawm tus nqi.
Cia peb xav tias muaj lub network loj uas txhua yam khoom siv Cisco txuas nrog hauv ib puag ncig. Hauv qhov no, PVST tau qhib los ntawm lub neej ntawd, yog li lub kaw lus yuav xaiv lub hauv paus hloov. Yog tias txhua yam khoom siv muaj qhov tseem ceeb, ces qhov hloov pauv nrog qhov qub MAC chaw nyob yuav muaj qhov tseem ceeb. Txawm li cas los xij, qhov no yuav yog 10-12 xyoo hloov ntawm cov qauv qub, uas tsis muaj lub zog txaus thiab kev ua tau zoo rau "ua" xws li lub network loj.
Nyob rau tib lub sijhawm, koj tuaj yeem muaj qhov hloov tshiab ntawm koj lub network uas raug nqi ntau txhiab daus las, uas, vim qhov loj dua MAC chaw nyob, raug yuam kom "ua raws" qhov hloov pauv qub uas raug nqi ob peb puas duas las. Yog tias qhov hloov pauv qub dhau los ua qhov hloov pauv hauv paus, qhov no qhia tau hais tias qhov teeb meem loj hauv network tsim.
Yog li ntawd, koj yuav tsum mus rau hauv qhov chaw ntawm qhov hloov tshiab thiab muab nws qhov tsawg kawg nkaus qhov tseem ceeb, piv txwv li, 0. Thaum siv VLAN1, tag nrho cov nqi tseem ceeb yuav yog 0 + 1 = 1, thiab tag nrho lwm yam khoom siv yuav ib txwm xav txog nws. hloov hauv paus.
Tam sim no cia peb xav txog qhov xwm txheej zoo li no. Yog tias lub hauv paus hloov pauv tsis muaj rau qee qhov laj thawj, koj tuaj yeem xav kom lub hauv paus hloov tshiab tsis yog ib qho kev hloov nrog qhov tseem ceeb tshaj plaws, tab sis ib qho kev hloov tshwj xeeb nrog kev sib txuas zoo dua. Nyob rau hauv cov ntaub ntawv no, nyob rau hauv lub hauv paus choj chaw, ib tug hais kom ua uas muab cov thawj thiab theem nrab cov hauv paus keyboards: spanning-ntoo vlan <VLAN tooj> hauv paus <primary/secondary>. Tus nqi tseem ceeb rau qhov kev hloov pauv tseem ceeb yuav sib npaug rau 32768 - 4096 - 4096 = 24576. Rau qhov hloov pauv thib ob yog suav nrog cov qauv 32768 - 4096 = 28672.
Koj tsis tas yuav sau cov lej no manually - lub kaw lus yuav ua rau koj tau txais. Yog li, lub hauv paus hloov pauv yuav yog qhov hloov pauv nrog qhov tseem ceeb 24576, thiab yog tias nws tsis muaj, qhov hloov pauv nrog qhov tseem ceeb 28672, txawm tias qhov tseem ceeb ntawm tag nrho lwm cov keyboards tsis tsawg dua 32768. Qhov no yuav tsum tau ua yog tias koj tsis ua. xav kom lub kaw lus cia li muab lub hauv paus hloov.
Yog tias koj xav saib STP raws tu qauv, koj yuav tsum siv cov lus qhia spanning-ntoo cov ntsiab lus. Tam sim no peb saib tag nrho cov ncauj lus uas peb tau kawm niaj hnub no siv Packet Tracer. Kuv tab tom siv lub network topology ntawm 4 2690 keyboards, qhov no tsis muaj teeb meem txij li tag nrho Cisco hloov qauv txhawb STP. Lawv txuas rau ib leeg kom lub network tsim ib lub voj voog vicious.
Los ntawm lub neej ntawd, Cisco cov cuab yeej ua haujlwm hauv PSTV + hom, uas txhais tau tias txhua qhov chaw nres nkoj yuav tsum tsis pub ntau tshaj 20 vib nas this rau kev sib koom ua ke. Lub vaj huam sib luag simulation tso cai rau koj los piav qhia txog kev xa cov tsheb khiav thiab saib cov kev ua haujlwm tsis zoo ntawm lub network tsim.
Koj tuaj yeem pom dab tsi STP BPDU ncej yog. Yog tias koj pom version 0 kev xaiv, ces koj muaj STP, vim version 2 yog siv rau RSTP. Tus nqi hauv paus ID, suav nrog qhov tseem ceeb thiab MAC chaw nyob ntawm lub hauv paus hloov, thiab qhov sib npaug Choj ID tus nqi kuj tau muab ntawm no.
Cov nqi no sib npaug, txij li tus nqi ntawm txoj kev mus rau lub hauv paus hloov rau SW0 yog 0, yog li ntawd, nws tus kheej yog lub hauv paus hloov. Yog li, tom qab tig ntawm cov keyboards, ua tsaug rau kev siv STP, lub hauv paus Choj tau raug xaiv thiab lub network pib ua haujlwm. Koj tuaj yeem pom tias txhawm rau tiv thaiv lub voj, qhov chaw nres nkoj sab saum toj Fa0/2 ntawm kev hloov SW2 tau hloov mus rau lub xeev thaiv, tab sis qhov ntawd tau qhia los ntawm cov xim txiv kab ntxwv ntawm cov cim.
Cia peb mus rau SW0 hloov chaw console thiab siv ob peb cov lus txib. Thawj yog cov yeeb yam spanning-ntoo hais kom ua, tom qab nkag mus rau qhov screen yuav qhia cov ntaub ntawv hais txog PSTV + hom rau VLAN1 network. Yog tias peb siv ob peb VLANs, lwm qhov thaiv cov ntaub ntawv yuav tshwm sim hauv qab ntawm lub qhov rais rau qhov thib ob thiab txuas ntxiv siv.
Koj tuaj yeem pom tias STP muaj nyob rau hauv IEEE tus qauv, uas txhais tau tias siv PVSTP +. Technically qhov no tsis yog .1d tus qauv. Cov ntaub ntawv hauv paus ID kuj tau muab rau ntawm no: qhov tseem ceeb 32769, MAC chaw nyob ntawm lub hauv paus ntaus ntawv, tus nqi 19, thiab lwm yam. Tom ntej no los txog Choj ID cov ntaub ntawv, uas txiav txim siab tus nqi tseem ceeb 32768 +1, thiab ua raws li lwm qhov chaw nyob MAC. Raws li koj tuaj yeem pom, kuv tau yuam kev - hloov SW0 tsis yog lub hauv paus hloov, lub hauv paus hloov muaj qhov sib txawv MAC chaw nyob muab rau hauv paus ID tsis. Kuv xav tias qhov no yog vim qhov tseeb tias SW0 tau txais BPDU thav duab nrog cov ntaub ntawv uas qee qhov hloov ntawm lub network muaj qhov laj thawj zoo los ua lub luag haujlwm ntawm lub hauv paus. Peb mam li saib qhov no tam sim no.
(tus neeg txhais lus ceeb toom: Hauv paus ID yog tus cim ntawm lub hauv paus hloov, tib yam rau txhua yam khoom siv ntawm tib lub VLAN network ua haujlwm dhau ntawm STP raws tu qauv, Choj ID yog tus cim ntawm qhov hloov hauv zos ua ib feem ntawm lub hauv paus Choj, uas tuaj yeem sib txawv. rau cov keyboards sib txawv thiab txawv VLANs).
Lwm qhov xwm txheej uas qhia tau hais tias SW0 tsis yog lub hauv paus hloov yog tias lub hauv paus hloov pauv tsis muaj qhov chaw nres nkoj hauv paus, thiab qhov no muaj ob qho chaw nres nkoj hauv paus thiab Chaw Nres Nkoj, uas nyob rau hauv lub xeev xa mus. Koj kuj pom hom kev sib txuas yog p2p, lossis taw tes rau-taw tes. Qhov no txhais tau hais tias cov chaw nres nkoj fa0/1 thiab fa0/2 tau txuas ncaj qha rau cov chaw nyob sib ze.
Yog tias qee qhov chaw nres nkoj tau txuas nrog lub hub, hom kev sib txuas yuav raug xaiv raws li kev sib koom, peb yuav saib qhov no tom qab. Yog tias kuv nkag mus rau cov lus txib kom saib cov ntsiab lus nthuav dav-ntoo, peb yuav pom tias qhov hloov pauv no nyob hauv PVSTP hom, ua raws li cov npe ntawm cov haujlwm tsis muaj chaw nres nkoj.
Cov hauv qab no qhia txog cov xwm txheej thiab tus naj npawb ntawm cov chaw nres nkoj ua haujlwm VLAN1: thaiv 0, mloog 0, kawm 0, 2 chaw nres nkoj nyob rau hauv lub xeev xa mus rau hauv STP hom.
Ua ntej tsiv mus rau hloov SW2, cia peb saib cov chaw ntawm kev hloov SW1. Rau qhov no peb siv tib yam qhia spanning-ntoo hais kom ua.
Koj pom tias hauv paus ID MAC chaw nyob ntawm kev hloov SW1 yog tib yam li ntawm SW0, vim tias txhua yam khoom siv hauv lub network, thaum sib koom ua ke, tau txais tib qhov chaw nyob ntawm tus choj hauv paus, txij li lawv ntseeg qhov kev xaiv los ntawm STP raws tu qauv. Raws li koj tuaj yeem pom, SW1 yog lub hauv paus hloov, vim tias hauv paus ID thiab Choj ID chaw nyob yog tib yam. Tsis tas li ntawd, muaj cov lus "qhov hloov pauv no yog lub hauv paus hloov."
Lwm qhov kos npe ntawm lub hauv paus hloov yog tias nws tsis muaj cov hauv paus chaw nres nkoj; ob qhov chaw nres nkoj raug xaiv raws li Kev Xaiv. Yog tias tag nrho cov chaw nres nkoj tau pom tias Tsim thiab nyob hauv lub xeev xa mus, ces koj muaj lub hauv paus hloov.
Hloov SW3 muaj cov ntaub ntawv zoo sib xws, thiab tam sim no kuv hloov mus rau SW2 vim tias ib qho ntawm nws cov chaw nres nkoj nyob hauv lub xeev thaiv. Kuv siv cov lus qhia spanning-ntoo hais kom ua thiab peb pom tias cov ntaub ntawv hauv paus ID thiab tus nqi tseem ceeb yog tib yam li lwm cov keyboards.
Nws yog qhia ntxiv tias ib qho ntawm cov chaw nres nkoj yog Lwm Txoj Kev. Tsis txhob tsis meej pem los ntawm qhov no, tus qauv 802.1d hu qhov no Blocking Chaw nres nkoj, thiab hauv PVSTP qhov chaw nres nkoj thaiv ib txwm raug xaiv los ua Lwm Txoj Haujlwm. Yog li, qhov hloov pauv Fa0/2 chaw nres nkoj no nyob rau hauv lub xeev thaiv, thiab Fa0/1 chaw nres nkoj ua lub hauv paus chaw nres nkoj.
Qhov chaw nres nkoj thaiv yog nyob rau hauv ntu ntu ntawm kev hloov SW0 thiab hloov SW2, yog li peb tsis muaj lub voj voog. Raws li koj tuaj yeem pom, cov keyboards siv p2p kev sib txuas vim tsis muaj lwm yam khoom siv txuas nrog lawv.
Peb muaj kev sib koom tes sib koom ua ke siv STP raws tu qauv. Tam sim no kuv yuav coj ib lub cable thiab txuas mus rau SW2 ncaj qha mus rau qhov kawg hloov SW1. Tom qab no, tag nrho cov chaw nres nkoj SW2 yuav raug qhia nrog cov cim txiv kab ntxwv.
Yog tias peb siv cov lus qhia spanning-ntoo cov ntsiab lus, peb yuav pom tias thawj ob qhov chaw nres nkoj nyob hauv lub xeev Mloog, ces lawv tsiv mus rau Lub Xeev Kawm thiab tom qab ob peb feeb mus rau Forwarding xeev, thiab cov xim ntawm cov cim hloov mus rau ntsuab. Yog tias peb tam sim no nkag mus rau cov yeeb yam spanning-ntoo hais kom ua, peb tuaj yeem pom tias Fa0/1, uas yav tas los hauv paus chaw nres nkoj, tam sim no tau nkag mus rau hauv lub xeev thaiv thiab tam sim no hu ua Lwm qhov chaw nres nkoj.
Chaw nres nkoj Fa0/3, uas lub hauv paus hloov cable txuas nrog, dhau los ua qhov chaw nres nkoj hauv paus, thiab chaw nres nkoj Fa0/2 tau los ua qhov chaw nres nkoj xaiv. Cia wb mus saib lwm tus txheej txheem ntawm kev sib koom ua ke. Kuv mam li txiav lub SW2-SW1 cable thiab rov qab mus rau yav dhau los topology. Koj tuaj yeem pom tau tias SW2 qhov chaw nres nkoj thawj zaug thiab tig rov qab mus rau txiv kab ntxwv, tom qab ntawd kev nce qib los ntawm Kev Mloog thiab Kev Kawm hauv lub xeev sib txuas thiab xaus rau hauv lub xeev Kev xa mus. Hauv qhov no, ib qho chaw nres nkoj hloov ntsuab, thiab qhov thib ob, txuas nrog hloov SW0, tseem yog txiv kab ntxwv. Cov txheej txheem convergence tau siv sijhawm ntev heev, xws li cov nqi ntawm STP.
Tam sim no cia saib seb RSTP ua haujlwm li cas. Cia peb pib nrog hloov SW2 thiab nkag mus rau spanning-ntoo hom ceev-pvst hais kom ua hauv nws qhov chaw. Cov lus txib no tsuas muaj ob txoj kev xaiv: pvst thiab ceev-pvst, Kuv siv qhov thib ob. Tom qab nkag mus rau qhov hais kom ua, qhov hloov pauv mus rau RPVST hom, koj tuaj yeem tshawb xyuas qhov no nrog cov lus qhia spanning-ntoo hais kom ua.
Thaum pib koj pom cov lus hais tias tam sim no peb muaj RSTP khiav. Txhua yam tseem tsis tau hloov. Tom qab ntawd kuv yuav tsum ua tib yam rau tag nrho lwm yam khoom siv thiab qhov ntawd yog rau kev teeb tsa RSTP. Cia peb saib yuav ua li cas cov txheej txheem no ua haujlwm ib yam li peb tau ua rau STP.
Kuv rov txuas hloov SW2 ncaj qha nrog lub cable rau hauv paus hloov SW1 - cia saib sai npaum li cas qhov kev sib tshuam tshwm sim. Kuv ntaus cov yeeb yam spanning-ntoo cov ntsiab lus hais kom ua thiab pom tias ob lub chaw hloov pauv nyob rau hauv lub xeev thaiv, 1 yog nyob rau hauv lub xeev Forwarding.
Koj tuaj yeem pom tias qhov sib koom ua ke tau tshwm sim yuav luag tam sim ntawd, yog li koj tuaj yeem txiav txim siab npaum li cas RSTP sai dua STP. Tom ntej no, peb tuaj yeem siv spanning-ntoo portfast default command, uas yuav hloov tag nrho cov chaw nres nkoj hloov mus rau hom portfast los ntawm lub neej ntawd. Qhov no muaj tseeb yog tias feem ntau ntawm cov chaw hloov pauv yog Edge cov chaw nres nkoj ncaj qha txuas nrog cov tswv. Yog tias peb muaj qhov chaw nres nkoj tsis-Edge, peb teeb tsa nws rov qab mus rau spanning-ntoo hom.
Txhawm rau teeb tsa kev ua haujlwm nrog VLAN, koj tuaj yeem siv spanning-ntoo vlan <number> hais kom ua nrog rau qhov tsis muaj qhov tseem ceeb (teeb tsa qhov tseem ceeb ntawm kev hloov pauv rau tsob ntoo spanning) lossis hauv paus (xa mus rau hauv paus). Peb siv spanning-ntoo vlan 1 qhov tseem ceeb hais kom ua, qhia meej tias qhov tseem ceeb ntawm tus lej twg yog ntau yam ntawm 4096, nyob rau hauv qhov ntau ntawm 0 txog 61440. Txoj kev no, koj tuaj yeem hloov qhov tseem ceeb ntawm txhua VLAN.
Koj tuaj yeem ntaus lub spanning-ntoo vlan 1 hauv paus hais kom ua nrog cov thawj lossis theem nrab kom teeb tsa cov thawj lossis qhov chaw nres nkoj hauv paus rau ib lub network tshwj xeeb. Yog tias kuv siv spanning-ntoo vlan 1 hauv paus thawj, qhov chaw nres nkoj no yuav yog thawj qhov chaw nres nkoj rau VLAN1.
Kuv yuav nkag mus rau qhov qhia spanning-ntoo hais kom ua, thiab peb yuav pom tias qhov kev hloov no SW2 muaj qhov tseem ceeb 24577, hauv paus ID thiab Choj ID MAC chaw nyob yog tib yam, uas txhais tau hais tias tam sim no nws tau dhau los ua lub hauv paus hloov.
Koj pom sai npaum li cas qhov kev sib tshuam thiab kev hloov pauv hauv lub luag haujlwm ntawm cov keyboards tshwm sim. Tam sim no kuv yuav tshem tawm thawj hom kev hloov pauv nrog cov lus txib tsis muaj spanning-ntoo vlan 1 hauv paus thawj, tom qab uas nws qhov tseem ceeb yuav rov qab mus rau tus nqi dhau los ntawm 32769, thiab lub luag haujlwm ntawm lub hauv paus hloov yuav rov mus rau SW1.
Cia peb saib seb portfast ua haujlwm li cas. Kuv yuav nkag mus rau qhov hais kom ua int f0/1, mus rau qhov chaw ntawm qhov chaw nres nkoj no thiab siv cov lus txib spanning-ntoo, tom qab ntawd lub kaw lus yuav ua rau qhov ntsuas qhov tseem ceeb.
Tom ntej no, kuv siv lub spanning-ntoo portfast hais kom ua, uas tuaj yeem nkag nrog cov kev txwv tsis pub ua haujlwm (lov tes taw ua haujlwm portfast rau ib qho chaw nres nkoj) lossis pob tw (ua kom muaj nuj nqi portfast rau qhov chaw nres nkoj txawm tias hauv lub cev hom).
Yog tias koj nkag mus rau spanning-ntoo portfast, txoj haujlwm tsuas yog qhib rau ntawm qhov chaw nres nkoj no. Txhawm rau qhib BPDU Guard muaj nuj nqi, koj yuav tsum siv lub spanning-ntoo bpduguard pab kom hais kom ua; lub spanning-ntoo bpduguard lov tes taw hais kom ua haujlwm no.
Kuv mam li tham sai sai txog ib qho ntxiv. Yog hais tias rau VLAN1 lub interface ntawm hloov SW2 nyob rau hauv cov kev taw qhia ntawm SW3 yog thaiv, ces nrog rau lwm qhov chaw rau lwm VLAN, piv txwv li, VLAN2, tib interface yuav ua tau lub hauv paus chaw nres nkoj. Yog li, lub kaw lus tuaj yeem siv lub tsheb thauj khoom sib npaug - nyob rau hauv ib rooj plaub, tsis siv lub network ntu, hauv lwm qhov, nws yog siv.
Kuv yuav qhia koj tias yuav ua li cas thaum, thaum txuas lub hub, peb muaj kev sib koom ua ke. Kuv yuav ntxiv ib lub hub rau hauv Circuit Court thiab txuas mus rau SW2 hloov nrog ob lub cables.
Cov yeeb yam spanning-ntoo hais kom ua yuav tso saib cov duab hauv qab no.
Fa0/5 (qhov chaw nres nkoj sab laug ntawm qhov hloov) dhau los ua qhov chaw nres nkoj thaub qab, thiab chaw nres nkoj Fa0/4 (qhov chaw nres nkoj sab xis ntawm qhov hloov) dhau los ua qhov chaw nres nkoj. Hom ntawm ob qhov chaw nres nkoj yog ntau, los yog sib koom. Qhov no txhais tau hais tias hub-hloov interface ntu yog ib qho kev sib koom ua ke.
Ua tsaug rau kev siv RSTP, peb muaj kev faib ua lwm yam thiab cov chaw nres nkoj thaub qab. Yog tias peb hloov pauv SW2 mus rau hom pvst siv lub spanning-ntoo hom pvst hais kom ua, peb yuav pom tias interface Fa0/5 tau rov hloov mus rau lwm lub xeev, vim tam sim no tsis muaj qhov sib txawv ntawm qhov chaw nres nkoj thaub qab thiab lwm qhov chaw nres nkoj.
Qhov no yog ib zaj lus qhia ntev heev, thiab yog tias koj tsis nkag siab ib yam dab tsi, kuv qhia koj kom rov xyuas dua.
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).
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