Hnub no peb yuav txuas ntxiv peb txoj kev kawm ntawm ntu 2.6 ntawm chav kawm ICND2 thiab saib kev teeb tsa thiab txheeb xyuas EIGRP raws tu qauv. Kev teeb tsa EIGRP yog qhov yooj yim heev. Raws li nrog rau lwm yam kev cai tswj hwm xws li RIP lossis OSPF, koj nkag mus rau lub router lub ntiaj teb kev teeb tsa hom thiab nkag mus rau router eigrp <#> hais kom ua, qhov # yog tus lej AS.
Tus lej no yuav tsum yog tib yam rau txhua yam khoom siv, piv txwv li, yog tias koj muaj 5 routers thiab lawv txhua tus siv EIGRP, ces lawv yuav tsum muaj tib tus lej tswj hwm tus kheej. Hauv OSPF, qhov no yog Tus Txheej Txheem ID, lossis tus lej txheej txheem, thiab hauv EIGRP, tus lej tswj hwm tus kheej.
Hauv OSPF, txhawm rau tsim ib lub zej zog, Cov Txheej Txheem ID ntawm cov routers sib txawv yuav tsis sib xws. Hauv EIGRP, AS tus lej ntawm txhua tus neeg nyob ze yuav tsum sib phim, txwv tsis pub lub zej zog yuav tsis raug tsim. Muaj 2 txoj hauv kev los pab rau EIGRP raws tu qauv - yam tsis tau qhia txog lub npog ntsej muag rov qab lossis nrog kev qhia meej lub npog ntsej muag.
Hauv thawj kis, cov lus txib hauv lub network qhia qhov chaw nyob IP zoo li 10.0.0.0. Qhov no txhais tau hais tias ib qho kev sib txuas nrog thawj octet ntawm IP chaw nyob 10 yuav koom nrog hauv EIGRP routing, uas yog, qhov no, tag nrho cov chav kawm A chaw nyob ntawm network 10.0.0.0 koom nrog. Txawm hais tias koj nkag mus rau qhov tseeb subnet zoo li 10.1.1.10 yam tsis tau qhia meej lub ntsej muag rov qab, cov txheej txheem tseem hloov nws mus rau qhov chaw nyob IP zoo li 10.0.0.0. Yog li ntawd, nco ntsoov tias lub kaw lus yuav lees txais qhov chaw nyob ntawm lub subnet uas tau teev tseg lawm, tab sis yuav txiav txim siab nws qhov chaw nyob hauv chav kawm thiab yuav ua haujlwm nrog tag nrho cov network ntawm chav kawm A, B lossis C, nyob ntawm tus nqi ntawm thawj octet ntawm IP chaw nyob. .
Yog tias koj xav khiav EIGRP ntawm 10.1.12.0/24 subnet, koj yuav tsum tau siv lub ntsej muag rov qab cov lus txib network 10.1.12.0 0.0.0.255. Yog li, EIGRP ua haujlwm nrog cov koom tes hauv chav kawm yam tsis muaj lub ntsej muag rov qab, thiab nrog cov subnets tsis muaj chav kawm, kev siv lub npog ntsej muag yog qhov yuav tsum tau ua.
Cia peb txav mus rau Packet Tracer thiab siv lub network topology los ntawm yav dhau los video nyeem, ntawm qhov piv txwv uas peb tau paub txog cov ntsiab lus ntawm FD thiab RD.
Cia peb teeb tsa lub network no hauv qhov program thiab saib seb nws yuav ua haujlwm li cas. Peb muaj 5 routers R1-R5. Txawm hais tias Packet Tracer siv routers nrog GigabitEthernet interfaces, kuv hloov pauv lub network bandwidth thiab ncua sij hawm kom cov tswv yim no tau sib txuam nrog cov topology tau tham ua ntej. Hloov chaw 10.1.1.0/24 network, kuv txuas lub virtual loopback interface rau R5 router, uas kuv tau muab qhov chaw nyob 10.1.1.1/32.
Cia peb pib los ntawm kev teeb tsa R1 router. Kuv tseem tsis tau qhib EIGRP ntawm no, tab sis tsuas yog muab tus IP chaw nyob rau lub router. Nrog rau config t hais kom ua, kuv nkag mus rau lub ntiaj teb configuration hom thiab pab kom cov raws tu qauv los ntawm kev ntaus ntawv router eigrp <autonomous system number>, uas yuav tsum nyob nruab nrab ntawm 1 thiab 65535. Kuv xaiv tus naj npawb 1 thiab ntaus nkag. Ntxiv mus, raws li kuv tau hais, koj tuaj yeem siv ob txoj hauv kev.
Kuv tuaj yeem ntaus lub network thiab tus IP chaw nyob ntawm lub network. Networks 1/10.1.12.0, 24/10.1.13.0 thiab 24/10.1.14.0 txuas nrog router R24. Lawv tag nrho ntawm "thib kaum" network, yog li kuv tuaj yeem siv ib qho generic network 10.0.0.0 hais kom ua. Yog tias kuv nias Enter, EIGRP yuav pib ntawm tag nrho peb lub interfaces. Kuv tuaj yeem txheeb xyuas qhov no los ntawm kev muab qhov ua qhia ip eigrp interfaces hais kom ua. Peb pom tias cov txheej txheem khiav ntawm 2 GigabitEthernet interfaces thiab ib qho Serial interface, uas R4 router txuas nrog.
Yog tias kuv khiav qhov do show ip eigrp interfaces hais kom rov kuaj dua, Kuv tuaj yeem tshawb xyuas tias EIGRP yeej khiav ntawm txhua qhov chaw nres nkoj.
Wb mus rau router R2 thiab pib cov txheej txheem siv config t thiab router eigrp 1 commands, Lub sijhawm no peb yuav tsis siv cov lus txib rau tag nrho lub network, tab sis siv lub npog ntsej muag rov qab. Ua li no, kuv nkag mus rau lub network 10.1.12.0 0.0.0.255 hais kom ua. Txhawm rau txheeb xyuas qhov teeb tsa, siv qhov ua qhia ip eigrp interfaces hais kom ua. Peb tuaj yeem pom tias EIGRP tsuas yog khiav ntawm Gig0 / 0 interface, vim tias tsuas yog qhov kev sib tshuam no cuam tshuam qhov tsis sib xws ntawm cov lus txib nkag.
Hauv qhov no, lub ntsej muag rov qab txhais tau tias EIGRP hom yuav siv tau rau txhua lub network uas nws thawj peb octets ntawm IP chaw nyob yog 10.1.12. Yog tias lub network nrog tib qhov tsis sib txuas nrog qee qhov kev sib txuas, ces qhov kev sib txuas no yuav raug ntxiv rau cov npe ntawm cov chaw nres nkoj uas cov txheej txheem no tab tom khiav.
Cia peb ntxiv lwm lub network nrog lub network 10.1.25.0 0.0.0.255 hais kom ua thiab saib seb cov npe ntawm cov interfaces uas txhawb EIGRP tam sim no zoo li cas. Raws li koj tuaj yeem pom, tam sim no peb tau ntxiv Gig0/1 interface. Nco ntsoov tias Gig0/0 interface muaj ib tus phooj ywg, lossis ib tus neeg nyob ze, router R1, uas peb tau teeb tsa. Tom qab ntawd, kuv yuav qhia koj cov lus txib kom kuaj xyuas cov chaw, thaum peb txuas ntxiv teeb tsa EIGRP rau lwm cov khoom siv. Peb yuav lossis tsis tuaj yeem siv lub ntsej muag rov qab thaum teeb tsa ib qho ntawm cov routers.
Kuv mus rau CLI console ntawm R3 router thiab hauv hom kev teeb tsa thoob ntiaj teb Kuv ntaus cov lus txib router eigrp 1 thiab network 10.0.0.0, tom qab ntawd kuv mus rau hauv qhov chaw ntawm R4 router thiab ntaus tib cov lus txib yam tsis siv lub ntsej muag rov qab.
Koj tuaj yeem pom tias EIGRP yooj yim rau kev teeb tsa li OSPF li cas - hauv qhov kawg, koj yuav tsum tau saib xyuas ABRs, thaj chaw, txiav txim siab lawv qhov chaw, thiab lwm yam. Tsis muaj qhov xav tau ntawm no - Kuv tsuas yog mus rau lub ntiaj teb teeb tsa ntawm R5 router, ntaus router eigrp 1 thiab network 10.0.0.0, thiab tam sim no EIGRP tab tom khiav ntawm tag nrho 5 cov khoom siv.
Cia peb saib cov ntaub ntawv peb tau tham txog hauv video kawg. Kuv mus rau hauv R2 teeb tsa thiab ntaus cov qhia ip txoj kev hais kom ua thiab lub kaw lus qhia cov ntawv nkag.
Cia peb them sai sai rau R5 router, lossis theej, mus rau lub network 10.1.1.0/24. Qhov no yog thawj kab nyob rau hauv lub rooj routing. Thawj tus lej hauv cov kab ke yog qhov kev tswj hwm nyob deb, uas yog 90 rau EIGRP raws tu qauv. Tsab ntawv D txhais tau hais tias cov ntaub ntawv hais txog txoj kev no yog muab los ntawm EIGRP raws tu qauv, thiab tus lej thib ob hauv cov hlua, sib npaug rau 26112, yog qhov ntsuas ntawm txoj kev R2-R5. Yog tias peb rov qab mus rau daim duab dhau los, peb pom tias ntawm no tus nqi ntsuas yog 28416, yog li kuv yuav tsum pom dab tsi yog vim li cas rau qhov tsis sib haum xeeb no.
Peb ntaus qhov qhia interface loopback 0 hais kom ua hauv R5 nqis. Qhov laj thawj yog vim li cas peb siv lub voj voog rov qab: yog tias koj saib R5 ncua ntawm daim duab, ces nws yog 10 ΞΌs, thiab hauv router chaw peb tau muab cov ntaub ntawv hais tias DLY ncua yog 5000 microseconds. Cia saib seb kuv puas tuaj yeem hloov tus nqi no. Kuv mus rau hauv R5 ntiaj teb no configuration hom thiab hom interface loopback 0 thiab ncua lus txib. Lub kaw lus muab cov lus qhia tias tus nqi ncua sij hawm tuaj yeem muab rau hauv thaj tsam ntawm 1 txog 16777215, thiab hauv kaum ntawm microseconds. Txij li thaum tus nqi ncua ntawm 10 ΞΌs hauv kaum sib raug rau 1, Kuv nkag mus rau qhov ncua sij hawm 1. Peb tshawb xyuas qhov cuam tshuam cuam tshuam dua thiab pom tias lub kaw lus tsis lees txais tus nqi no, thiab nws tsis xav ua qhov no txawm tias hloov kho lub network. parameters nyob rau hauv R2 chaw.
Txawm li cas los xij, kuv lees paub rau koj tias yog tias peb rov xam cov metric rau lub tswv yim yav dhau los, suav nrog lub cev tsis ua haujlwm ntawm R5 router, qhov ua tau nyob deb li cas rau txoj kev ntawm R2 mus rau 10.1.1.0/24 network yuav yog 26112. Cia saib ntawm cov nqi zoo sib xws hauv R1 router tsis tau los ntawm kev ntaus cov lus txib qhia ip txoj kev. Raws li koj tuaj yeem pom, rau 10.1.1.0/24 network, kev suav rov qab tau ua thiab tam sim no tus nqi ntsuas yog 26368, tsis yog 28416.
Koj tuaj yeem tshawb xyuas qhov kev suav rov qab no raws li cov tswv yim los ntawm cov kev qhia hauv video dhau los, suav nrog qhov tshwj xeeb ntawm Packet Tracer, uas siv qhov sib txawv ntawm lub cev tsis sib xws, tshwj xeeb, kev ncua sijhawm sib txawv. Sim tsim koj tus kheej lub network topology nrog cov bandwidth thiab latency qhov tseem ceeb thiab suav nws cov kev txwv. Hauv koj qhov kev xyaum, koj yuav tsis tas yuav ua cov kev suav suav, tsuas yog paub yuav ua li cas. Vim hais tias yog tias koj xav siv lub load ntsuas peb tau hais hauv cov yeeb yaj kiab kawg, koj yuav tsum paub tias koj tuaj yeem hloov qhov ncua sijhawm. Kuv tsis qhia kom kov lub bandwidth, kho EIGRP nws yog qhov txaus los hloov cov nqi ncua.
Yog li, koj tuaj yeem hloov qhov txiaj ntsig ntawm bandwidth thiab ncua sijhawm, yog li hloov cov txiaj ntsig ntawm EIGRP metric. Qhov no yuav yog koj qhov homework. Raws li niaj zaus, rau qhov no koj tuaj yeem rub tawm los ntawm peb lub vev xaib thiab siv ob qho tib si network topologies hauv Packet Tracer. Cia peb rov qab mus rau peb lub tswv yim.
Raws li koj tuaj yeem pom, teeb tsa EIGRP yog qhov yooj yim heev, thiab koj tuaj yeem siv ob txoj hauv kev los xaiv cov tes hauj lwm: nrog lossis tsis muaj lub ntsej muag rov qab. Zoo li OSPF, hauv EIGRP peb muaj 3 lub rooj: cov lus nyob sib ze, cov lus topology thiab cov lus qhia. Cia peb saib cov rooj no dua.
Cia peb mus rau hauv R1 nqis thiab pib nrog cov neeg nyob sib ze lub rooj los ntawm kev nkag mus rau cov lus qhia ip eigrp cov neeg nyob ze. Peb pom tias lub router muaj 3 tus neeg nyob ze.
Chaw nyob 10.1.12.2 yog router R2, 10.1.13.1 yog router R3 thiab 10.1.14.1 yog router R4. Lub rooj kuj qhia los ntawm kev sib txuas lus nrog cov neeg nyob sib ze. Lub Hold Uptime yog qhia hauv qab no. Yog tias koj nco qab, qhov no yog lub sijhawm, uas ua rau 3 Nyob Zoo sijhawm, lossis 3 x 5s = 15s. Yog tias lub sijhawm no tsis tau txais cov lus teb Hello los ntawm cov neeg nyob ze, qhov kev sib txuas yog suav tias yog ploj. Technically, yog tias cov neeg nyob sib ze teb, tus nqi no nqis mus rau 10s thiab rov qab mus rau 15s. Txhua 5 vib nas this, lub router xa lus nyob zoo, thiab cov neeg nyob ze teb rau nws li ntawm tsib feeb tom ntej. Lub sijhawm ncig mus ncig rau SRTT pob ntawv yog muab li 40 ms. Nws qhov kev suav yog ua los ntawm RTP raws tu qauv, uas EIGRP siv los npaj kev sib txuas lus ntawm cov neeg nyob ze. Thiab tam sim no peb yuav saib cov lus topology, uas peb siv cov qhia ip eigrp topology hais kom ua.
OSPF raws tu qauv piav qhia txog qhov teeb meem no, sib sib zog nqus topology uas suav nrog tag nrho cov routers thiab txhua qhov txuas muaj nyob hauv lub network. EIGRP raws tu qauv qhia ib qho yooj yim topology raws li ob txoj kev ntsuas. Thawj qhov kev ntsuas yog qhov tsawg kawg nkaus qhov kev ncua deb, uas yog ib qho ntawm cov yam ntxwv ntawm txoj kev. Tsis tas li ntawd, los ntawm kev sib tw, qhov tshaj tawm tus nqi nyob deb tau tshwm sim - qhov no yog qhov thib ob metric. Rau lub network 10.1.1.0/24, uas txuas nrog router 10.1.12.2, qhov ua tau nyob deb yog 26368 (tus nqi thawj zaug hauv kab lus). Tib tus nqi yog muab tso rau hauv lub rooj routing vim router 10.1.12.2 yog tus txais - Successor.
Yog hais tias qhov kev ncua deb ntawm lwm tus router, nyob rau hauv cov ntaub ntawv no tus nqi 3072 ntawm router 10.1.14.4, yog tsawg tshaj li qhov ua tau deb ntawm cov neeg nyob ze ze, ces tus router yog ib tug Feasible Successor. Yog hais tias kev sib txuas lus nrog router 10.1.12.2 ploj ntawm GigabitEthernet 0/0 interface, router 10.1.14.4 yuav dhau qhov kev ua tiav.
Hauv OSPF, suav txoj hauv kev los ntawm lub router thaub qab yuav siv sijhawm qee lub sijhawm, uas, nrog lub network loj, ua lub luag haujlwm tseem ceeb. EIGRP tsis nkim sijhawm rau cov kev suav no, vim nws twb paub tus neeg sib tw rau lub luag haujlwm ntawm Successor. Cia peb saib ntawm lub rooj topology siv cov lus qhia ip txoj kev hais kom ua.
Raws li koj tuaj yeem pom, nws yog Successor, uas yog, lub router nrog tus nqi qis tshaj FD, uas tau muab tso rau hauv lub rooj sib tham. Cov channel nrog metric 26368 tau qhia ntawm no, uas yog FD ntawm lub hom phiaj router 10.1.12.2.
Muaj peb cov lus txib uas tuaj yeem siv los txheeb xyuas cov txheej txheem kev teeb tsa rau txhua qhov interface.
Thawj yog qhia khiav-config. Siv nws, kuv tuaj yeem pom dab tsi raws tu qauv khiav ntawm lub cuab yeej no, qhov no tau qhia los ntawm router eigrp 1 lus rau network 10.0.0.0. Txawm li cas los xij, los ntawm cov ntaub ntawv no nws tsis tuaj yeem txiav txim siab seb qhov twg cuam tshuam cov txheej txheem no tab tom khiav, yog li kuv yuav tsum tau saib cov npe nrog cov tsis muaj ntawm tag nrho R1 interfaces. Nyob rau tib lub sijhawm, kuv them sai sai rau thawj octet ntawm tus IP chaw nyob ntawm txhua qhov interface - yog tias nws pib nrog 10, ces EIGRP muaj feem cuam tshuam rau qhov interface no, txij li qhov xwm txheej no rau kev sib piv nrog lub network chaw nyob 10.0.0.0. puas yog. Yog li, siv cov yeeb yam khiav-config hais kom ua, koj tuaj yeem pom cov txheej txheem twg yog khiav ntawm txhua qhov interface.
Cov lus txib tom ntej yog qhia ip raws tu qauv. Tom qab nkag mus rau qhov kev hais kom ua no, koj tuaj yeem pom tias cov txheej txheem routing yog "eigrp 1". Tom ntej no, qhov tseem ceeb ntawm K coefficients rau kev xam cov metric yog tso tawm kom pom. Lawv txoj kev kawm tsis suav nrog hauv chav kawm ICND, yog li nyob rau hauv cov chaw peb yuav lees txais K qhov tseem ceeb.
Ntawm no, raws li hauv OSPF, Router-ID yog tso tawm kom pom raws li qhov chaw nyob IP: 10.1.12.1. Yog tias koj tsis muab qhov ntsuas no manually, lub kaw lus cia li xaiv lub loopback interface nrog qhov chaw nyob IP siab tshaj li RID.
Cov hauv qab no qhia tias tsis siv neeg txoj kev summarization yog neeg xiam. Qhov no yog ib qho tseem ceeb, vim hais tias yog peb siv subnets nrog classless IP chaw nyob, nws yog qhov zoo dua rau lov tes taw summation. Yog tias koj qhib qhov no, cov hauv qab no yuav tshwm sim.
Xav txog tias peb muaj routers R1 thiab R2 siv EIGRP, thiab 2 network txuas nrog router R3: 10.1.2.0, 10.1.10.0 thiab 10.1.25.0. Yog tias autosummary qhib, ces thaum R2 xa qhov hloov tshiab rau R1, nws qhia tau tias nws txuas nrog 10.0.0.0/8 network. Qhov no txhais tau hais tias txhua yam khoom siv txuas nrog 10.0.0.0/8 network xa cov hloov tshiab rau nws, thiab tag nrho cov tsheb khiav mus rau 10. network yuav tsum raug coj mus rau R2.
Yuav ua li cas yog tias lwm tus router R1 txuas nrog lub network 3 thiab 10.1.5.0 txuas nrog thawj router R10.1.75.0? Yog tias R3 tseem siv autosummary, nws yuav qhia R1 tias tag nrho cov tsheb khiav mus rau 10.0.0.0/8 network yuav tsum raug coj mus rau nws.
Yog tias R1 txuas nrog R2 ntawm 192.168.1.0 thiab R3 txuas nrog 192.168.2.0, ces EIGRP tsuas yog txiav txim siab autosummary ntawm R2 txheej, uas yog qhov tsis raug. Yog li ntawd, yog tias koj xav siv autosummary rau ib lub router tshwj xeeb, nyob rau hauv peb rooj plaub R2, xyuas kom meej tias tag nrho cov subnets nrog thawj octet ntawm tus IP chaw nyob 10. tsuas yog txuas nrog lub router no. Koj yuav tsum tsis txhob muaj kev sib txuas nrog 10. qhov chaw, mus rau lwm lub router. Tus thawj coj hauv lub network uas npaj siab siv autosummarization ntawm txoj kev yuav tsum xyuas kom meej tias txhua lub network nrog tib qhov chaw nyob tau txuas nrog tib lub router.
Hauv kev xyaum, nws yooj yim dua uas autosum muaj nuj nqi yog neeg xiam oob qhab los ntawm lub neej ntawd. Hauv qhov no, router R2 yuav xa cov hloov tshiab cais rau router R1 rau txhua lub network txuas nrog nws: ib qho rau 10.1.2.0, ib qho rau 10.1.10.0, thiab ib qho rau 10.1.25.0. Nyob rau hauv cov ntaub ntawv no, lub R1 routing rooj yuav muab ntxiv nrog tsis yog ib tug, tab sis peb txoj kev. Tau kawg, cov ntsiab lus tseem ceeb pab txo tus naj npawb ntawm cov nkag hauv lub rooj sib tham, tab sis yog tias koj npaj tsis raug, koj tuaj yeem rhuav tshem tag nrho lub network.
Cia peb rov qab mus rau qhov qhia ip raws tu qauv hais kom ua. Nco ntsoov tias ntawm no koj tuaj yeem pom tus nqi tswj hwm qhov deb ntawm 90, nrog rau txoj kev siab tshaj plaws rau kev thauj khoom sib npaug, uas ua rau 4. Txhua txoj hauv kev no muaj tus nqi tib yam. Lawv tus lej tuaj yeem raug txo, piv txwv li, mus rau 2, lossis nce mus rau 16.
Tom ntej no, qhov loj tshaj plaws ntawm lub hop counter, los yog routing segments, yog 100, thiab tus nqi yog Maximum metric variance = 1. Hauv EIGRP, Variance variance tso cai rau koj los txiav txim siab txog kev sib npaug uas nws cov metrics tseem nyob ze ntawm tus nqi, uas tso cai rau koj. txhawm rau ntxiv ntau txoj hauv kev nrog cov ntsuas tsis sib npaug rau lub rooj sib tham ua rau tib lub subnet. Peb mam li saib qhov no hauv kev nthuav dav ntxiv tom qab.
Cov ntaub ntawv Routing rau Networks: 10.0.0.0 yog ib qho kev qhia tias peb tab tom siv qhov kev xaiv tsis muaj backmask. Yog tias peb nkag mus rau hauv R2 chaw, qhov twg peb siv lub npog ntsej muag rov qab, thiab nkag mus rau cov lus qhia ip raws tu qauv, peb yuav pom tias Routing rau Networks rau lub router no yog ob kab: 10.1.12.0/24 thiab 10.1.25.0/24, uas. yog, muaj qhov qhia txog kev siv lub npog ntsej muag wildcard.
Rau cov laj thawj, koj tsis tas yuav nco ntsoov cov ntaub ntawv zoo li cas cov lus txib muab rau - tsuas yog siv lawv thiab saib cov txiaj ntsig. Txawm li cas los xij, ntawm kev xeem, koj yuav tsis muaj sijhawm los teb cov lus nug, uas tuaj yeem kuaj xyuas nrog cov lus qhia ip raws tu qauv. Koj yuav tau xaiv ib lo lus teb kom raug los ntawm ntau txoj kev xaiv. Yog tias koj yuav dhau los ua tus kws tshaj lij Cisco qib siab thiab tsis tau txais daim ntawv pov thawj CCNA nkaus xwb, tab sis kuj yog CCNP lossis CCIE, ces koj yuav tsum paub tias cov ntaub ntawv tshwj xeeb no lossis qhov kev xeem cov lus txib tsim tawm thiab cov lus txib ua rau dab tsi. Koj yuav tsum paub tsis yog tsuas yog cov txheej txheem ntawm Cisco cov khoom siv xwb, tab sis kuj nkag siab txog Cisco iOS operating system txhawm rau txhim kho cov khoom siv network no kom zoo.
Cia peb rov qab mus rau cov ntaub ntawv uas lub kaw lus teeb meem hauv kev teb rau cov lus qhia ip raws tu qauv. Peb pom Routing Information Sources, sawv cev raws li kab nrog tus IP chaw nyob thiab kev tswj xyuas nyob deb. Tsis zoo li OSPF cov ntaub ntawv, EIGRP tsis siv Router ID hauv qhov no, tab sis tus IP chaw nyob ntawm routers.
Cov lus txib kawg uas tso cai rau koj ncaj qha saib cov xwm txheej ntawm cov interfaces yog qhia ip eigrp interfaces. Yog tias koj nkag mus rau cov lus txib no, koj tuaj yeem pom tag nrho cov router interfaces uas khiav EIGRP.
Yog li, muaj 3 txoj hauv kev los xyuas kom meej tias lub cuab yeej khiav EIRGP raws tu qauv.
Cia peb saib cov nqi sib npaug ntawm qhov sib npaug, lossis sib npaug ntawm qhov sib npaug. Yog tias 2 interfaces muaj tus nqi tib yam, lawv yuav raug thauj khoom sib npaug los ntawm lub neej ntawd.
Cia peb siv Packet Tracer saib seb nws zoo li siv lub network topology peb twb paub lawm. Cia kuv ceeb toom rau koj tias qhov bandwidth thiab ncua sij hawm yog tib yam rau txhua txoj hauv kev ntawm cov duab routers. Kuv qhib EIGRP hom rau tag nrho 4 routers, uas kuv mus rau hauv lawv qhov chaw nyob rau hauv lem thiab ntaus cov commands config davhlau ya nyob twg, router eigrp thiab network 10.0.0.0.
Piv txwv tias peb yuav tsum xaiv txoj kev zoo tshaj R1-R4 mus rau lub voj rov qab virtual interface 10.1.1.1, thaum tag nrho plaub qhov txuas R1-R2, R2-R4, R1-R3 thiab R3-R4 muaj tus nqi tib yam. Yog tias koj nkag mus rau qhov qhia ip txoj kev hais kom ua hauv R1 CLI, koj tuaj yeem pom tias 10.1.1.0/24 network tuaj yeem mus txog ntawm ob txoj kev: los ntawm 10.1.12.2 router txuas nrog GigabitEthernet0/0 interface, lossis los ntawm 10.1.13.3. 0 router txuas nrog interface GigabitEthernet1/XNUMX, thiab ob qho tib si ntawm txoj kev no muaj tib qhov kev ntsuas.
Yog tias peb muab cov lus qhia ip eigrp topology hais kom ua, peb yuav pom tib cov ntaub ntawv ntawm no: 2 Tus neeg txais kev vam meej nrog tib tus nqi FD ntawm 131072.
Yog li, peb tau kawm txog qhov sib npaug ntawm ECLB load balancing, uas tuaj yeem ua tau ob qho tib si hauv OSPF thiab hauv rooj plaub ntawm EIGRP.
Txawm li cas los xij, EIGRP kuj tseem muaj qhov sib npaug ntawm tus nqi thauj khoom sib npaug (UCLB), lossis tsis sib npaug. Qee qhov xwm txheej, cov kev ntsuas yuav txawv me ntsis ntawm ib leeg, uas ua rau txoj kev yuav luag sib npaug, nyob rau hauv rooj plaub no EIGRP tso cai rau kev sib npaug los ntawm kev siv tus nqi hu ua "variation" - Variance.
Xav txog tias peb muaj ib lub router txuas nrog peb lwm tus - R1, R2 thiab R3.
Router R2 muaj qhov qis tshaj FD = 90, yog li nws ua raws li tus neeg ua tiav. Xav txog RD ntawm lwm ob txoj kev. R1's RD ntawm 80 yog tsawg dua R2's FD, yog li R1 ua raws li tus thaub qab Feasible Successor. Vim tias R3's RD yog ntau dua R1's FD, nws tsis tuaj yeem dhau los ua Tus Ua Tau Zoo.
Yog li, peb muaj ib tug router - Successor thiab ib tug router - Feasible Successor. Koj tuaj yeem tso R1 rau hauv lub rooj sib tham siv qhov sib txawv ntawm qhov sib txawv. Hauv EIGRP, los ntawm lub neej ntawd, Variance = 1, yog li lub router R1 li Feasible Successor tsis nyob hauv lub rooj sib tham. Yog tias peb siv tus nqi Variance = 2, ces tus nqi ntawm FD ntawm router R2 yuav muab faib ua 2 thiab yuav yog 180. Qhov no, FD ntawm router R1 yuav tsawg dua FD ntawm router R2: 120 < 180. , yog li router R1 yuav muab tso rau hauv lub rooj routing li Successor 'a.
Yog tias peb sib npaug Variance = 3, ces tus nqi FD ntawm tus txais R2 yuav yog 90 x 3 = 270. Qhov no, lub router R1 kuj yuav poob rau hauv lub rooj routing, vim 120 < 270. Tsis txhob txaj muag tias lub router R3 tsis nkag mus rau hauv lub rooj txawm tias qhov tseeb tias nws FD = 250 nrog Variance = 3 yuav tsawg dua FD ntawm router R2, txij li 250 < 270. Qhov tseeb yog tias rau router R3 qhov xwm txheej RD < FD Successor tseem tsis tau. ntsib, txij li thaum RD = 180 tsis tsawg, tab sis ntau tshaj FD = 90. Yog li, txij li thaum R3 tsis tuaj yeem pib ua tus Feasible Successor, txawm tias tus nqi sib txawv ntawm 3, nws tseem yuav tsis nkag mus rau hauv lub rooj sib tham.
Yog li, los ntawm kev hloov tus nqi ntawm Variance, peb tuaj yeem siv qhov sib npaug ntawm qhov sib npaug kom suav nrog txoj hauv kev uas peb xav tau hauv lub rooj sib tham.
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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Tau qhov twg los: www.hab.com