Video: Cisco fib yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Forwarding Information Base ( FIB ) table - CEF siv a FIB los ua tus IP lo lus tseem ceeb ua ntej-raws li kev txiav txim siab hloov. Cov FIB yog conceptually zoo ib yam li lub rooj routing los yog cov ntaub ntawv puag. Nws tuav daim iav duab ntawm cov ntaub ntawv xa mus uas muaj nyob rau hauv lub rooj sib tham IP.
Cov lus nug tseem yog, dab tsi yog fib hauv kev sib tham?
Ib tug forwarding information base ( FIB ), tseem hu ua lub rooj xa khoom lossis MAC rooj, feem ntau siv hauv network bridging, routing, thiab cov haujlwm zoo sib xws los nrhiav cov khoom tsim nyog network interface uas lub input interface yuav tsum xa ib pob ntawv. Nws yog lub rooj dynamic uas qhia MAC chaw nyob rau cov chaw nres nkoj.
Ib tug kuj yuav nug, dab tsi yog rib Cisco? Routing Information Base ( RIB ) yog ib qho kev sib sau ntawm cov ntaub ntawv hais txog kev sib txuas ntawm txhua qhov ntawm lub network. RIB khaws cov kev zoo tshaj plaws los ntawm tag nrho cov txheej txheem routing uas tau khiav ntawm qhov system. Qhov module no piav qhia yuav ua li cas siv thiab saib xyuas RIB ntawm Cisco IOS XR network.
Ua kom pom qhov no, FIB thiab cov lus nyob ib sab yog dab tsi?
FIB yog daim iav ntawm RIB yog li xav tias nws muaj daim iav ntawm txoj kev rooj . Qhov FIB tuav cov ntaub ntawv chaw nyob tom ntej raws li cov ntaub ntawv hauv IP routing rooj . Lwm ib feem ntawm cov txheej txheem yog cov rooj sib tham , cov rooj sib tham tuav L2 tom ntej hop chaw nyob rau txhua tus FIB nkag.
Dab tsi yog qhov txawv ntawm rib thiab fib?
Cov ntaub ntawv xa mus hauv paus ( FIB ) yog cov ntaub ntawv tiag tiag uas lub routing / switching ntaus ntawv siv los xaiv lub interface uas ib pob ntawv muab yuav siv rau egress. Cov RIB yog ib qho kev xaiv ntawm routing cov ntaub ntawv kawm los ntawm static txhais los yog ib tug dynamic routing raws tu qauv.
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