Namhlanje siza kuqala ukufunda i-protocol ye-EIGRP, leyo, kunye nokufunda i-OSPF, iyona nto ibaluleke kakhulu kwikhosi ye-CCNA.
Siza kubuyela kwiCandelo 2.5 kamva, kodwa okwangoku, kanye emva kweCandelo 2.4, siya kudlulela kwiCandelo 2.6, “Ukuqwalasela, ukuQinisekisa, kunye nokuJonga iNgxaki kwi-EIGRP ngaphezulu kwe-IPv4 (Ngaphandle kokuQinisekisa, ukuHlufa, ukuShwankathelwa kweManuwali, ukusasazwa ngokutsha, kunye neStub. Uqwalaselo)."
Namhlanje siza kuba nesifundo esiyintshayelelo apho ndiya kukwazisa ngengcamango yeProtocol Ephuculweyo ye-Internal Gateway Routing EIGRP, kwaye kwizifundo ezibini ezilandelayo siza kujonga ukuqwalasela kunye nokulungisa iingxaki kwiirobhothi zeprotocol. Kodwa kuqala ndifuna ukukuxelela oku kulandelayo.
Kwizifundo ezimbalwa ezidlulileyo siye safunda malunga ne-OSPF. Ngoku ndifuna ukuba ukhumbule ukuba xa sijonge i-RIP kwiinyanga ezininzi ezidlulileyo, sathetha malunga neendlela zokuhamba kunye nobuchwepheshe obunqanda i-traffic kwi-loping. Unokuthi uthintele njani amarhintyela xa usebenzisa i-OSPF? Ngaba kuyenzeka ukusebenzisa iindlela ezinje ngetyhefu yeNdlela okanye iSplit Horizon kule nto? Le yimibuzo ekufuneka uziphendulele yona. Unokusebenzisa ezinye izixhobo ezinemixholo, kodwa fumana iimpendulo kule mibuzo. Ndifuna ukuba ufunde indlela yokufumana iimpendulo ngokwakho ngokusebenzisa imithombo eyahlukeneyo, kwaye ndikhuthaza ukuba ushiye izimvo zakho ngaphantsi kwale vidiyo ukuze ndibone ukuba bangaphi abafundi bam abawugqibileyo lo msebenzi.
Yintoni i-EIGRP? Yindlela yolandelelwano yomgaqo olandelwayo edibanisa iimpawu eziluncedo zazo zombini iprotocol yevektha yomgama efana ne-RIP kunye ne-link-state protocol efana ne-OSPF.
I-EIGRP yi-protocol ye-Cisco yobunini eyenziwe yafumaneka kuluntu kwi-2013. Ukususela kwi-link-state tracking protocol, wamkela i-algorithm yokusekwa kwendawo, ngokungafaniyo ne-RIP, engenzi abamelwane. I-RIP ikwatshintshiselana ngeetafile zomzila kunye nabanye abathathi-nxaxheba kwiprothokholi, kodwa i-OSPF yenza i-adjacency ngaphambi kokuba iqalise olu tshintshiselwano. I-EIGRP isebenza ngendlela efanayo.
Iprotocol ye-RIP ngamaxesha athile ihlaziya itafile epheleleyo yomzila rhoqo kwimizuzwana engama-30 kwaye isasaza ulwazi malunga nazo zonke iindlela zokujonga kunye nazo zonke iindlela kubo bonke abamelwane bayo. I-EIGRP ayilwenzi uhlaziyo olupheleleyo lolwazi ngamaxesha athile, endaweni yoko isebenzisa ingqikelelo yokusasaza imiyalezo kaMolo ngendlela efanayo ne-OSPF eyenza ngayo. Rhoqo kwimizuzwana embalwa ithumela iMolo ukuqinisekisa ukuba ummelwane “usaphila.”
Ngokungafaniyo neprotocol yevector yomgama, ephonononga yonke i-topology yenethiwekhi ngaphambi kokuthatha isigqibo sokwenza indlela, i-EIGRP, njenge-RIP, idala iindlela ezisekelwe kumahemuhemu. Xa ndithetha amahemuhemu, ndithetha ukuba xa ummelwane ebika into ethile, i-EIGRP iyavumelana nayo ngaphandle kombuzo. Umzekelo, ukuba ummelwane uthi uyayazi indlela yokufikelela ku-10.1.1.2, i-EIGRP iyamkholelwa ngaphandle kokubuza, “Uyazi njani loo nto? Ndixelele nge-topology yayo yonke inethiwekhi!
Ngaphambi kuka-2013, ukuba usebenzisa i-Cisco Infrastructure kuphela, ungasebenzisa i-EIGRP, ekubeni le protocol yenziwa emva kwe-1994. Nangona kunjalo, iinkampani ezininzi, nokuba zisebenzisa izixhobo zeCisco, azizange zifune ukusebenza nalo msantsa. Ngokombono wam, i-EIGRP yeyona ndlela ilungileyo yokuhambisa indlela namhlanje kuba kulula kakhulu ukuyisebenzisa, kodwa abantu basakhetha i-OSPF. Ndicinga ukuba oku kungenxa yokuba abafuni ukubotshwa kwiimveliso zeCisco. Kodwa uCisco wenze ukuba le protocol ifumaneke esidlangalaleni kuba ixhasa izixhobo zothungelwano zomntu wesithathu njengeJuniper, kwaye ukuba usebenzisana nenkampani engasebenzisi izixhobo zeCisco, awuyi kuba nangxaki.
Masithathe uhambo olufutshane kwimbali yeprotocol zenethiwekhi.
Iprotocol ye-RIPv1, eyavela kwiminyaka yee-1980, yayinenani lemida, umzekelo, inani eliphezulu leehops ze-16, kwaye ngoko ke ayikwazanga ukubonelela ngomzila kwiinethiwekhi ezinkulu. Emva kwexeshana, baye baphuhlisa iprotocol ye-IGRP yesango yangaphakathi, eyayingcono kakhulu kune-RIP. Nangona kunjalo, yayingaphezulu kweprotocol yevector yomgama kuneprotocol yelizwe lonxibelelwano. Ngasekupheleni kwee-80, kwavela umgangatho ovulekileyo, i-OSPFv2 ikhonkco yeprotocol yelizwe ye-IPv4.
Ekuqaleni kweminyaka ye-90, iCisco yagqiba ekubeni i-IGRP ifuna ukuphuculwa kwaye ikhuphe iProtocol Ephuculweyo ye-Internal Gateway Routing EIGRP. Yayisebenza ngakumbi kune-OSPF kuba idibanise iimpawu zazo zombini i-RIP kunye ne-OSPF. Njengoko siqala ukuyiphonononga, uya kubona ukuba i-EIGRP ilula kakhulu ukuyiqwalasela kune-OSPF. I-Cisco izamile ukwenza iprotocol eyayiza kuqinisekisa ukuhlangana kwenethiwekhi ngokukhawuleza kunokwenzeka.
Ngasekupheleni kweminyaka engama-90, kwakhutshwa inguqulelo ehlaziyiweyo engenaklasi ye-RIPv2. Kwiminyaka ye-2000, inguqulelo yesithathu ye-OSPF, i-RIPng kunye ne-EIGRPv6, exhasa i-IPv6 protocol, yavela. Ihlabathi ngokuthe ngcembe lisondela kutshintsho olupheleleyo ukuya kwi-IPv6, kwaye abaphuhlisi bendlela yomgaqo bafuna ukulungela oku.
Ukuba uyakhumbula, sifunde ukuba xa ukhetha indlela efanelekileyo, i-RIP, njengeprotocol ye-vector yomgama, ikhokelwa yikhrayitheriya enye kuphela - inani elincinci le-hops, okanye umgama omncinci ukuya kujongano lokusingwa. Ngoko, i-router R1 iya kukhetha indlela ethe ngqo kwi-router R3, nangona isantya kule ndlela si-64 kbit / s - amaxesha amaninzi ngaphantsi kwesantya kwindlela R1-R2-R3, elingana ne-1544 kbit / s. Iprothokholi ye-RIP iyakuthathela ingqalelo indlela ecothayo yobude be-hop enye ibe yeyona ilungileyo kunendlela ekhawulezayo yeehops ezi-2.
I-OSPF iya kufunda yonke i-topology yenethiwekhi kwaye yenza isigqibo sokusebenzisa indlela nge-R3 njengendlela ekhawulezayo yonxibelelwano kunye ne-router R2. I-RIP isebenzisa inani leehops njengemetric yayo, ngelixa i-metric ye-OSPF iyindleko, kwiimeko ezininzi ezihambelana ne-bandwidth yekhonkco.
I-EIGRP iphinda igxininise kwiindleko zendlela, kodwa i-metric yayo inzima kakhulu kune-OSPF kwaye ixhomekeke kwizinto ezininzi, ezibandakanya ubungakanani be-Bandwidth, Ukulibaziseka, ukuthembeka, ukulayisha, kunye ne-MTU ephezulu. Ngokomzekelo, ukuba enye i-node ilayishwe ngakumbi kunabanye, i-EIGRP iya kuhlalutya umthwalo kwindlela yonke kwaye ukhethe enye i-node enomthwalo omncinci.
Kwikhosi ye-CCNA siya kuthathela ingqalelo kuphela imiba yokwakheka kweemetriki njengeBandwidth kunye nokuLibazisa ezi zizo eziya kusetyenziswa yi-metric formula.
Iprotocol yevector yomgama i-RIP isebenzisa iikhonsepthi ezimbini: umgama kunye nolwalathiso. Ukuba sinee-router ezi-3, kwaye enye yazo iqhagamshelwe kwinethiwekhi ye-20.0.0.0, ngoko ukhetho luya kwenziwa ngumgama - ezi zi-hops, kule meko i-hop 1, kunye nolwalathiso, oko kukuthi, ngakweyiphi indlela - phezulu. okanye ngaphantsi - ukuthumela itrafikhi .
Ukongeza, i-RIP isebenzisa ukuhlaziywa kwexesha lolwazi, ukuhambisa itafile epheleleyo yomzila kuyo yonke inethiwekhi yonke imizuzwana ye-30. Olu hlaziyo lwenza izinto ezi-2. Eyokuqala luhlaziyo lwangempela lwetafile yomzila, okwesibini kukujonga ukusebenza kommelwane. Ukuba isixhobo asifumani ukuhlaziywa kwetafile yempendulo okanye ulwazi olutsha lwendlela kummelwane phakathi kwemizuzwana ye-30, iyaqonda ukuba indlela eya kummelwane ayinakusetyenziswa. I-router ithumela ukuhlaziywa rhoqo kwimizuzwana ye-30 ukufumanisa ukuba ummelwane usaphila kwaye ukuba indlela isasebenza.
Njengoko benditshilo, itekhnoloji yeSplit Horizon isetyenziselwa ukuthintela iilophu zendlela. Oku kuthetha ukuba uhlaziyo aluthunyelwanga kwakhona kujongano oluphuma kulo. Itekhnoloji yesibini yokuthintela iilophu yiNdlela yePoison. Ukuba uxhulumaniso kunye nenethiwekhi ye-20.0.0.0 eboniswe kumfanekiso iphazamisekile, i-router edibaniswe kuyo ithumela "indlela enetyhefu" kubamelwane bayo, apho ibika ukuba le nethiwekhi ngoku ifikeleleke kwi-hops ye-16, oko kukuthi, ayifikeleleki. Le yindlela esebenza ngayo i-RIP protocol.
Isebenza njani iEIGRP? Ukuba ukhumbula kwizifundo malunga OSPF, le protocol yenza imisebenzi emithathu: iseka ebumelwaneni, isebenzisa LSA ukuhlaziya LSDB ngokungqinelana utshintsho kwi-topology womnatha, kwaye yakha itafile umzila. Ukuseka ubumelwane yinkqubo entsonkothileyo kakhulu esebenzisa iiparamitha ezininzi. Ngokomzekelo, ukujonga kunye nokutshintsha uxhulumaniso lwe-2WAY - ezinye iidibaniso zihlala zikwisimo sonxibelelwano lweendlela ezimbini, ezinye ziya kwi-FULL state. Ngokungafaniyo ne-OSPF, oku akwenzeki kwi-protocol ye-EIGRP - ihlola iiparamitha ezi-4 kuphela.
Njenge-OSPF, le protocol ithumela umyalezo kaMolo oqulethe iiparamitha ezi-10 rhoqo kwimizuzwana eli-4. Eyokuqala yinqobo yokuqinisekisa, ukuba iqwalaselwe ngaphambili. Kule meko, zonke izixhobo ekusekwe kuzo ukusondela kufuneka zibe nemilinganiselo yokuqinisekisa efanayo.
Iparameter yesibini isetyenziselwa ukujonga ukuba ngaba izixhobo zenkqubo efanayo yokuzimela, oko kukuthi, ukuseka ukusondela usebenzisa i-protocol ye-EIGRP, zombini izixhobo kufuneka zibe nenombolo efanayo yenkqubo yokuzimela. Iparamitha yesithathu isetyenziselwa ukujonga ukuba imiyalezo Molo ithunyelwe kwidilesi ye IP efanayo.
Iparamitha yesine isetyenziselwa ukujonga ukuhambelana kwe-Coefficients eguquguqukayo ye-K. Iprothokholi ye-EIRGP isebenzisa ii-coefficients ezi-5 ukusuka kwi-K1 ukuya kwi-K5. Ukuba uyakhumbula, ukuba K=0 iiparamitha azihoywanga, kodwa ukuba K=1, ngoko ke iiparamitha zisetyenziswa kwifomula yokubala i-metric. Ke, amaxabiso e-K1-5 kwizixhobo ezahlukeneyo kufuneka afane. Kwikhosi ye-CCNA siyakuthatha amaxabiso angagqibekanga ala ma-coefficients: i-K1 kunye ne-K3 zilingana no-1, kwaye i-K2, i-K4 kunye ne-K5 zilingana no-0.
Ke, ukuba ezi parameters ezi-4 zihambelana, i-EIGRP iseka ubudlelwane bommelwane kunye nezixhobo zingena omnye komnye kwitafile yommelwane. Emva koko, utshintsho lwenziwa kwitheyibhile ye-topology.
Yonke imiyalezo ye-Hello ithunyelwa kwidilesi ye-IP ye-multicast 224.0.0.10, kunye nohlaziyo, ngokuxhomekeke kuqwalaselo, luthunyelwa kwiidilesi ezingafaniyo zabamelwane okanye kwidilesi ye-multicast. Olu hlaziyo alufiki kwi-UDP okanye i-TCP, kodwa isebenzisa iprotocol eyahlukileyo ebizwa ngokuba yi-RTP, iProtocol yezoThutho eZithembekileyo. Le protocol ihlola ukuba ummelwane ufumene ukuhlaziywa, kwaye njengoko igama layo libonisa, umsebenzi walo ophambili kukuqinisekisa ukuthembeka konxibelelwano. Ukuba uhlaziyo alufikeleli kummelwane, ukuhanjiswa kuya kuphinda kuphindwe ade afumane ummelwane. I-OSPF ayinayo indlela yokukhangela isixhobo somamkeli, ngoko ke inkqubo ayiyazi ukuba izixhobo ezingabamelwane zifumene uhlaziyo okanye hayi.
Ukuba uyakhumbula, i-RIP ithumela uhlaziyo lwe-topology yenethiwekhi epheleleyo rhoqo ngemizuzwana engama-30. I-EIGRP yenza oku kuphela ukuba isixhobo esitsha sivele kuthungelwano okanye utshintsho oluthile lwenzekile. Ukuba i-subnet topology itshintshile, iprotocol iya kuthumela ukuhlaziywa, kodwa kungekhona itafile epheleleyo ye-topology, kodwa kuphela iirekhodi ezinolu tshintsho. Ukuba i-subnet iyatshintsha, i-topology yayo kuphela iya kuhlaziywa. Oku kubonakala ngathi luhlaziyo olungaphelelanga lwenzeka xa lufunwa.
Njengoko usazi, OSPF ithumela LSAs rhoqo 30 imizuzu, kungakhathaliseki ukuba kukho naluphi na utshintsho kuthungelwano. I-EIGRP ayiyi kuthumela naluphi na uhlaziyo lwexesha elongeziweyo kude kubekho utshintsho oluthile kwinethiwekhi. Ngoko ke, i-EIGRP isebenza kakuhle kakhulu kune-OSPF.
Emva kokuba ii-routers zitshintshe iiphakheji zokuhlaziya, isigaba sesithathu siqala - ukubunjwa kwetafile yomzila ngokusekelwe kwi-metric, ebalwa ngokusebenzisa ifomyula eboniswe kumfanekiso. Ubala iindleko aze enze isigqibo esisekelwe kwezi ndleko.
Makhe sicinge ukuba i-R1 ithumele i-Molo kwi-router R2, kwaye loo router ithumele i-Hello kwi-router R1. Ukuba zonke iiparamitha zihambelana, ii-routers zenza itafile yabamelwane. Kule theyibhile, i-R2 ibhala ingeniso malunga ne-router R1, kwaye i-R1 yenza ingeniso malunga ne-R2. Emva koku, i-router R1 ithumela uhlaziyo kwinethiwekhi 10.1.1.0/24 eqhagamshelwe kuyo. Kwitheyibhile yomzila, oku kubonakala ngathi ulwazi malunga nedilesi ye-IP yenethiwekhi, i-interface ye-router ebonelela ngonxibelelwano kunye nayo, kunye neendleko zendlela ngokusebenzisa le interface. Ukuba uyakhumbula, ixabiso le-EIGRP li-90, kwaye ke ixabiso le-Distance liboniswa, esiza kuthetha ngalo kamva.
Ifomula epheleleyo yemetric ibonakala intsonkothe ngakumbi, kuba ibandakanya amaxabiso ee-coefficients ze-K kunye notshintsho olwahlukeneyo. Iwebhusayithi yeCisco inikezela ngefomu epheleleyo yefomula, kodwa ukuba ubeka endaweni yamaxabiso e-coefficient engagqibekanga, iya kuguqulwa ibe yifom elula - i-metric iya kufana ne (bandwidth + Delay) * 256.
Siza kusebenzisa nje olu hlobo lulula lwefomula ukubala i-metric, apho i-bandwidth kwiikhilobhithi ilingana ne-107, yahlulwe ngowona mkhawulo umncinci wabo bonke ujongano olukhokelela kuthungelwano lwendawo ekuyiwa kuyo ubuncinci-bandwidth, kwaye ukulibaziseka-ukulibazisa iyonke. ukulibaziseka kumashumi eemicroseconds kuzo zonke iindibano ezikhokelela kuthungelwano lwendawo.
Xa sifunda i-EIGRP, kufuneka siqonde iinkcazo ezine: Umgama onokwenzeka, uMgama oxeliweyo, uMlandeli (i-router engummelwane enexabiso eliphantsi lendlela ukuya kwinethiwekhi yendawo), kunye ne-Feasible Successor (i-router yommelwane egcinayo). Ukuze uqonde ukuba bathetha ukuthini, qwalasela le topology yenethiwekhi ilandelayo.
Masiqale ngokwenza itheyibhile ye-R1 ukukhetha eyona ndlela ilungileyo kuthungelwano 10.1.1.0/24. Ecaleni kwesixhobo ngasinye i-output kwi-kbit/s kunye ne-latency kwi-ms iyaboniswa. Sisebenzisa 100 Mbps okanye 1000000 kbps GigabitEthernet ujongano, 100000 kbps FastEthernet, 10000 kbps Ethernet, kunye 1544 kbps ujongano oluthotho. La maxabiso anokufunyanwa ngokujonga iimpawu zojongano lomzimba oluhambelanayo kuseto lwe-router.
Ugqithiso olungagqibekanga lwe Ujongano lwe Uthotho yi 1544 kbps, kwaye nokuba unomgca wama 64 kbps, i-output izakuba yi 1544 kbps. Ke ngoko, njengomlawuli wenethiwekhi, kufuneka uqiniseke ukuba usebenzisa ixabiso elichanekileyo lomda. Kwi-interface ethile, inokusekwa usebenzisa umyalelo we-bandwidth, kwaye usebenzisa umyalelo wokulibaziseka, unokutshintsha ixabiso lokulibaziseka okungagqibekanga. Awunaxhala malunga namaxabiso angagqibekanga e-bandwidth ye-GigabitEthernet okanye ujongano lwe-Ethernet, kodwa lumka xa ukhetha isantya somgca ukuba usebenzisa i-Serial interface.
Nceda uqaphele ukuba kulo mzobo ukulibaziseka kuboniswa kwi-milliseconds ms, kodwa eneneni zii-microseconds, andinayo nje unobumba u-μ ukuchaza ngokuchanekileyo i-microseconds μs.
Nceda uqaphele le nyaniso ilandelayo. Ukuba ukhupha ujongano lomboniso we-g0/0 umyalelo, inkqubo iyakubonisa ukubambezeleka kumashumi ee-microseconds kune-microseconds nje.
Siza kujonga lo mbandela ngokweenkcukacha kwividiyo elandelayo ekuqwalaseleni i-EIGRP, okwangoku khumbula ukuba xa ubeka amaxabiso e-latency kwifomula, i-100 μs ukusuka kumzobo ijika ibe yi-10, kuba ifomula isebenzisa amashumi ee-microseconds, hayi iiyunithi.
Kumzobo, ndiza kubonisa ngamachaphaza abomvu ujongano apho i-outputs ebonisiweyo kunye nolibaziseko zinxulumana khona.
Okokuqala, kufuneka sijonge umgama onokwenzeka. Le yi-metric ye-FD ebalwa kusetyenziswa ifomula. Kwicandelo elivela kwi-R5 ukuya kwinethiwekhi yangaphandle, kufuneka sahlule i-107 nge-106, ngenxa yoko sifumana i-10. Emva koko, kule xabiso le-bandwidth kufuneka songeze ukulibaziseka okulinganayo no-1, kuba sine-microseconds eyi-10, oko kukuthi, ishumi elinye. Ixabiso lesiphumo se-11 kufuneka liphindwe nge-256, oko kukuthi, ixabiso le-metric liya kuba ngu-2816. Eli lixabiso le-FD kweli candelo lothungelwano.
I-Router R5 iya kuthumela eli xabiso kwi-router R2, kwaye i-R2 iya kuba yi-Reported Distance echazwe, oko kukuthi, ixabiso elithe ummelwane lixelele. Ke, umgama opapashiweyo we-RD kuzo zonke ezinye izixhobo uya kulingana nomgama onokwenzeka we-FD wesixhobo esikuxelile.
I-Router R2 yenza izibalo ze-FD ngokusekelwe kwidatha yayo, oko kukuthi, ukwahlula i-107 nge-105 kwaye ifumana i-100. Emva koko yongeza kweli xabiso isixa sokulibaziseka kwindlela eya kuthungelwano lwangaphandle: ukulibaziseka kwe-R5, ilingana ne-microseconds enye elishumi, kunye nayo ulibaziseko olungokwakho, lilingana neshumi lamashumi. Ukulibaziseka kukonke kuya kuba ngama-11 amashumi ee-microseconds. Siyongeza kwikhulu elinesiphumo kwaye sifumane 111, phinda-phinda elixabiso ngo 256 kwaye ufumane ixabiso FD = 28416. I-Router R3 yenza okufanayo, ifumana emva kokubala ixabiso FD=281856. I-Router R4 ibala ixabiso FD=3072 kwaye ithumela kwi-R1 njenge-RD.
Nceda uqaphele ukuba xa ubala i-FD, i-router R1 ayifaki indawo yayo ye-bandwidth ye-1000000 kbit / s kwifomula, kodwa i-bandwidth ephantsi ye-router R2, elingana ne-100000 kbit / s, kuba ifomula ihlala isebenzisa i-bandwidth encinci ye-router. ujongano olukhokelela kuthungelwano lwendawo ekuyiwa kuyo . Kule meko, i-routers i-R10.1.1.0 kunye ne-R24 ibekwe kwindlela yothungelwano 2/5, kodwa ekubeni i-router yesihlanu ine-bandwidth enkulu, ixabiso elincinci le-bandwidth ye-router R2 ifakwe kwifomula. Ulibaziseko lulonke endleleni i-R1-R2-R5 yi-1+10+1 (amashumi) = 12, i-throughput encitshisiweyo yi-100, kwaye isixa sala manani aphindaphindwe ngama-256 anika ixabiso FD=30976.
Ngoko ke, zonke izixhobo zibalwe i-FD ye-interfaces yazo, kwaye i-router R1 ineendlela ezi-3 ezikhokelela kwinethiwekhi yendawo. Ezi ziindlela iR1-R2, R1-R3 kunye neR1-R4. I-router ikhetha ixabiso elincinci lomgama onokwenzeka we-FD, olingana no-30976 - le yindlela eya kwi-router R2. Le router iba nguMlandeli, okanye "umlandeli". Itheyibhile yomzila ikwabonisa iFeasible Successor (i-backup successor) - ithetha ukuba ukuba umdibaniso phakathi kwe-R1 kunye ne-Successor yophukile, indlela iya kuthuthwa nge-backup Feasible Successor router.
Abaphumeleleyo abaSebenzayo banikezelwa ngokomgaqo omnye: umgama opapashiweyo we-RD wale router kufuneka ube ngaphantsi kwe-FD ye-router kwicandelo ukuya kwi-Successor. Kwimeko yethu, i-R1-R2 ine-FD = 30976, i-RD kwicandelo le-R1-K3 ilingana no-281856, kunye ne-RD kwicandelo le-R1-R4 lilingana no-3072.
Oku kuthetha ukuba ukuba unxibelelwano luphazamisekile kwicandelo lothungelwano lwe-R1-R2, i-traffic kuthungelwano lwe-10.1.1.0/24 iya kuthunyelwa ngendlela ye-R1-R4-R5. Ukutshintsha indlela xa usebenzisa i-RIP kuthatha amashumi amaninzi emizuzwana, xa usebenzisa i-OSPF kuthatha imizuzwana emininzi, kwaye kwi-EIGRP yenzeka ngoko nangoko. Le yenye inzuzo ye-EIGRP ngaphezu kwezinye iiprothokholi zendlela.
Kwenzeka ntoni ukuba uMmeli kunye noMlandeli onokwenzeka baqhawulwe ngaxeshanye? Kule meko, i-EIGRP isebenzisa i-algorithm ye-DUAL, enokubala indlela yokugcina i-backup ngokusebenzisa umntu onokuthi aphumelele. Oku kungathatha imizuzwana emininzi, ngexesha apho i-EIGRP iya kufumana omnye ummelwane ongasetyenziselwa ukuhambisa i-traffic kunye nokubeka idatha yayo kwitafile yomzila. Emva koku, iprotocol iya kuqhubeka nomsebenzi wayo wesiqhelo wokuhamba.
Enkosi ngokuhlala nathi. Ngaba uyawathanda amanqaku ethu? Ngaba ufuna ukubona umxholo onomdla ngakumbi? Sixhase ngokufaka iodolo okanye ngokucebisa abahlobo, I-30% isaphulelo kubasebenzisi beHabr kwi-analogue ekhethekileyo yeeseva zomgangatho wokungena, eyenzelwe wena: (ifumaneka nge-RAID1 kunye ne-RAID10, ukuya kuthi ga kwi-24 cores kunye ne-40GB DDR4).
I-Dell R730xd 2 amaxesha aphantsi? Kuphela apha eNetherlands! Dell R420 - 2x E5-2430 2.2Ghz 6C 128GB DDR3 2x960GB SSD 1Gbps 100TB - ukusuka $99! Funda malunga
umthombo: www.habr.com