Cov txheej txheem:

Kuv yuav nrhiav tau tus IP chaw nyob ntawm Vlsm li cas?
Kuv yuav nrhiav tau tus IP chaw nyob ntawm Vlsm li cas?

Video: Kuv yuav nrhiav tau tus IP chaw nyob ntawm Vlsm li cas?

Video: Kuv yuav nrhiav tau tus IP chaw nyob ntawm Vlsm li cas?
Video: Qhia saib yus tus hluas nkauj qhov chaw nyob 2024, Kaum ib hlis
Anonim

IPv4 - VLSM

  1. Kauj ruam - 1. Ua ib daim ntawv teev cov Subnets ua tau.
  2. Kauj ruam - 2. Soj ntsuam cov kev cai ntawm IPs nyob rau hauv descending order (Highest mus rau qis tshaj).
  3. Kauj Ruam - 3. Muab qhov siab tshaj plaws ntawm IPs rau qhov xav tau siab tshaj plaws, yog li cia peb muab 192.168.
  4. Kauj ruam - 4. Muab qhov siab tshaj plaws tom ntej, yog li cia peb muab 192.168.
  5. Kauj ruam - 5.
  6. Kauj ruam - 6.

Yog li ntawd, koj yuav suav Vlsm li cas?

Rau xam VLSM subnets thiab cov tswv lag luam faib cov kev xav tau loj tshaj plaws ua ntej los ntawm qhov chaw nyob. Cov theem yuav tsum tau teev tseg los ntawm qhov loj tshaj mus rau qhov tsawg tshaj plaws. Hauv qhov piv txwv no Perth xav tau 60 tus tswv. Siv 6 khoom txij li 26 - 2 = 62 chaw nyob tuaj yeem siv tau.

Qhov thib ob, kuv yuav nrhiav tau kuv qhov chaw nyob li cas? Tag nrho tus lej IPv4 host chaw nyob rau lub network yog 2 rau lub hwj chim ntawm tus naj npawb ntawm tus tswv tsev bits, uas yog 32 rho tawm tus naj npawb ntawm cov khoom siv network. Rau peb qhov piv txwv ntawm a /21 (network mask 255.255. 248.0) network, muaj 11 tus tswv tsev ib (32 chaw nyob bits – 21 network bits = 11 tus tswv tsev bits).

Hauv qhov no, piv txwv li Vlsm yog dab tsi?

VLSM tso cai rau koj siv cov qhov ncauj qhov ntswg sib txawv thoob plaws lub network rau tib chav kawm ntawm chaw nyob. Rau piv txwv , a / 30 subnet mask, uas muab 2 tus tswv chaw nyob rau ib lub subnet, tuaj yeem siv rau kev sib txuas ntawm cov routers. Qhov taw tes-to-point txuas ntawm cov routers yog siv lub npog ntsej muag / 30 uas muab 2 tus tswv tsev chaw nyob.

Vlsm yog dab tsi?

Variable-Length Subnet Masking ( VLSM ) tus nqi rau "subnetting subnets," uas txhais tau tias VLSM tso cai rau cov engineers hauv network faib qhov chaw nyob IP rau hauv ib qho chaw ntawm subnets ntawm ntau qhov sib txawv, ua rau nws muaj peev xwm tsim subnets nrog ntau tus tswv tsev suav nrog yam tsis muaj qhov chaw nyob loj.

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