Nexus TCAM: kungani isifunda sokucindezela i-ARP sidinga izingcezu ezimbili
Ama-entry e-logical ayingxenye kuphela yesabelomali. Isici esisikwe ngobubanzi obuphindwe kabili sidinga izingcezu ezimbili, futhi ingcezu eyodwa evulekile endaweni engafanele ngeke yanele.
Ulinganisa isifunda sokucindezela i-ARP, ubala ama-entry adingwa ukuklama, uthola isifunda esinomthamo ovulekile ongaphezulu kwalokho, futhi ushintsho lusalungeni. Akukho okwabalwa ngokungalungile. Isabelomali obusifunda silinganiswa ngezingcezu, futhi isici esisikwe ngobubanzi obuphindwe kabili sidinga ezimbili zazo ngaphambi kokuba kucatshangelwe noma iyiphi i-entry.
Thatha ukwabiwa njengenkinga yokuhlelwa enenani elinqunyiwe lamayunithi, futhi izibalo zizoqala ukuziphatha kahle.
Isifunda siphethe izingcezu, hhayi ama-entry
I-TCAM kulezi zingxenyekazi ihlukaniswe ngezingcezu, futhi ingcezu ngayinye ingeyesifunda esisodwa ncamashi. Izifunda zilinganiswa ngezingcezu, futhi ububanzi besici bunquma ukuthi busebenzisa okungenani izingcezu ezingaki. Isici sobubanzi obubodwa singahlala engcezwini eyodwa; isici sobubanzi obuphindwe kabili sidinga izingcezu ezimbili eziseduze.
| Concept | What it means when you plan |
|---|---|
| Slice | The indivisible unit; it belongs to one region and cannot be shared |
| Feature width | Single or double; a double-width feature must have two slices available |
| Logical entries | What the feature wants to store, which only matters after the slices are allocated |
Ngakho-ke ingcezu evulekile akuwona umthamo osebenzisekayo ngokuzenzakalela. Izifunda ezimbili zobubanzi obubodwa ezingcezwini ezihlukene azihlangani zibe yizingcezu ezimbili ezidingwa isifunda esisha sobubanzi obuphindwe kabili, futhi ithebula elibonisa isikhala esiningi esingasetshenziswanga sisonke likutshela ngeqoqo ongeke ukwazi ukulisebenzisa.
Rekhoda umugqa oyisisekelo ngaphambi kokusika
Qoqa imodeli yezingxenyekazi eqondile, inguqulo ye-NX-OS, ububanzi nosayizi bamanje bezifunda, kanye nezici ezisebenzisa isifunda ngasinye. Yenza lokhu ngaphambi kwanoma yiluphi ushintsho, ngoba ngemva kokulayisha kabusha isimo sangaphambilini siyisikhumbuzo, hhayi iqiniso.
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show hardware capacity
show running-config | include hardware profileAmagama emiyalo ayahluka ngokwengxenyekazi nenguqulo, futhi umhlahlandlela wokusika usho lawo asebenza kuzingxenyekazi zawo. Funda okukhiphayo okutholayo ngempela esikhundleni sokucabanga ukuthi umyalo ovela kwelinye imodeli ukhiqiza ithebula elifanayo.
Bese ubhala ukuthi isifunda ngasinye sisebenza ini. Isifunda se-VACL siwumthamo wokuhlunga ngesizathu, futhi isifunda se-QoS sikhona ngoba othile wasilinganisa senqubomgomo esasebenza. Uhlelo oluthatha lezo zikhala njengesikhala esingabuyiselwa ngaphandle kokuhlola luhlelo lokususa izici buthule. Qoka umnikazi wesifunda ngasinye ohlela ukusinciphisa, futhi unikeze lowo mnikazi usayizi omusha ngaphambi kwewindi.
Cabanga nangendlela. Lapho ingxenyekazi ihlanganisa ukwabiwa kokungena nokuphuma, ushintsho ohlangothini olulodwa lungasebenzisa isabelomali kolunye, futhi uhlelo olubala kuphela ithebula lokungena luzobonakala lulungile futhi lwehluleke ekuqaleni kokulayisha kabusha.
Okungakwenzi ukukhulula ingcezu eyodwa enkulu
Ukunciphisa isifunda esikhulu sobubanzi obubodwa kukhulula ingcezu eyodwa. Uma isifunda sakho esihlosiwe sidinga izingcezu ezimbili, leyo ngcezu eyodwa ingase ingabi nandima ngaphandle uma iseduze kwenye ingcezu evulekile, futhi ukusondelana kuyisici sokuhlelwa, hhayi sesamba.
Nakhu lapho abantu baphetha khona ukuthi ingxenyekazi yephukile noma imibhalo ayilungile. Akukho kokubili okuyiqiniso. Imodeli yokwabiwa yenza ncamashi lokho ekuveza, futhi iphutha kwakuwukubala isikhala esivulekile esikhundleni sokubala izingcezu ezivulekile ezindaweni ezifanele. Uma usudwebe ukuhlelwa ephepheni, izingcezu ezimbili ezitholakalayo zikhona noma azikho, futhi leyo ingxoxo elula kakhulu nomnikazi wengxenyekazi kunempikiswano ngezamba.
Kukhona futhi ugibe lwenguqulo okufanele lushiwowe. Umhlahlandlela wokusika we-Cisco uchaza isizukulwane esithile sezingxenyekazi futhi usho ngokucacile ukuthi imodeli yawo akuyona i-Cloud Scale futhi akuyona i-Silicon One. Amagama ezifunda, osayizi abazenzakalelayo kanye nokuthi yiziphi izici ezinobubanzi obuphindwe kabili kuyahluka kwezinye izindawo, ngakho-ke isexwayiso ngesifunda esithile engxenyekazini eyodwa siwubufakazi mayelana naleyo ngxenyekazi nenguqulo, hhayi iresiphi yomhlaba wonke.
Ukushintsha isifunda ukushintsha kwesici
Ukusika ngakunye ukushintshana komthamo. Ukunciphisa isifunda ukuze kwenziwe isikhala sokucindezela i-ARP kunciphisa lokho isifunda esasivikela, futhi umphumela ungase ungabonakali kuze kube yilapho inqubomgomo edinga isikhala isetshenziswa futhi.
Thola imvume ebhaliwe kumnikazi wesici ngasinye esithintekile ngaphambi kwewindi. Lokho akubona ubuhhovisi: umuntu owalinganisa isifunda se-VACL ekuqaleni uyazi ukuthi sihlunga ini, futhi umuntu owenza isikhala ngokuvamile akazi.
Lindela ukulayisha kabusha koshintsho olushintsha ukuhlelwa kwezingxenyekazi. Ezinye izingxenyekazi zikudinga kanti ezinye azikudingi, kodwa ukuhlela ngaphandle kwewindi lokunakekela lapho ukulayisha kabusha kungenzeka yiyo indlela ushintsho lomzila oluba ukuphazamiseka ngayo. Hlela iwindi elizungeze ukulayisha kabusha hhayi umyalo, futhi gcina umbhalo wephrofayela yangaphambilini endaweni ongawufunda kuyo kusuka kukhonsoli elahlekelwe isikhathi saso sokuphatha.
Sebenzisa futhi uqinisekise ngokumelene nomugqa oyisisekelo
Sebenzisa uhlelo ngenqubo esekelwayo yengxenyekazi, bese uqinisekisa imisebenzi oyigcinile, hhayi kuphela leyo oyengezile. Isifunda esisanda kusikwa esisebenza ngenkathi ukuhlunga sekume buthule ukufanisa siwumphumela omubi kunokwehluleka kwasekuqaleni.
Funda futhi okukhiphayo komthamo bese ukuqhathanisa nomugqa oyisisekelo owurekhodile, bese uhlola isici esikhuthaze ushintsho. Umhlahlandlela wokusika we-Nexus TCAM uyireferensi yemodeli yobubanzi nezingcezu echazwe lapha, kuhlanganise nokuthi ihlanganisa isiphi isizukulwane sezingxenyekazi.