I-Calculator ye-subnet (IPv4 CIDR)

Uhlu oluphelele lwe-IPv4 lwe-subnet: ukuxhumana, ukusakazwa, i-mask, i-wildcard, umphathi wendawo yokusebenzela kanye nokubala.

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Ubude besinqumlisi, isibonelo 24 nge-255.0 mask.
Idilesi yenethiwekhi —
Ikheli le-Broadcast —
Isihluzi senethiwekhi eseduze —
Isigqoko se-wildcard —
Amamephu asetshenziswayo —
Uhlu lomphathi —

Iziphetho zivuselelwa uma ubhala.

Malunga nale khadi

subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods to calculate the size of a subnet: The subnet calculator uses the following methods

Imibuzo ebuzwa kaningi

Ingabe kunezimemi ezingu-1000 ezikhona ku-subnet?

I /n subnet ine 2^(32−n) izikheli, ngaphezu kwezimbili ezigcinwe kunethiwekhi nokusabalalisa. I /24 ine 256 izikheli ne 254 amahovisi asebenzisekayo.

Yini i-wildcard mask?

I-mask ye-wildcard iyi-bitwise reverse ye-mask ye-subnet (255.0 → 0.255). Uhlu lokufinyelela-ukulawula kanye ne-OSPF lisebenzisa lokhu ukufana koluhlu lwekheli.

Yini ushintsho phakathi kwenethiwekhi nekheli le-broadcast?

Ikheli lenethiwekhi (zonke izixhumanisi zesizinda 0) linikeza igama lenethiwekhi eseduze; ikheli le-broadcast (zonke izixhumanisi zesizinda 1) lifinyelela kuwo wonke amakhompiyutha. Akunalutho oluzobekwa kudivayisi.

Yini okusho i-CIDR prefix (/24, /16)?

Le yinani le-bit ezihamba phambili ezihlanganisa ingxenye yokuxhumana yekheli. Isingeniso esikhulu sisho ama-bit amaningi wokuxhumana nama-bit amancane omnikazi, ngakho-ke i-subnet encane: /24 inikeza ama-hosts angama-254, /25 inikeza ama-126, futhi i-bit engeziwe ngayinye ihlukanisa isikhala.

Ngiyihlukanisa kanjani insizakalo ibe yimithombo encane?

Thola amabithi omnikazi ngokunyusa isiqalo. Ukuhlukanisa i /24 ibe ama /25s amabili kunikeza amabloki amabili we-126 omnikazi; ukuya ku /26 kunikeza amabloki amane we-62. I-bit yesiqalo ngayinye engeziwe iphinda inani le-subnets futhi ikhuphula ubukhulu babo.

Yini isigaba sekheli le-IP?

I-classful scheme edala ihlukanise amakheli nge-octet yabo yokuqala: Isigaba A (1–126), Isigaba B (128–191) nesigaba C (192–223) ye-unicast, kanye ne-D ye-multicast ne-E egcinwe. I-CIDR iguqule amaqembu ukuhlukaniswa, kodwa i-calculator iphinde ibike isigaba ikheli liwela kuwo.

Yini okwenziwa yi /31 ne /32 subnets?

A /31 inekheli ezimbili kuphela futhi akukho ukusakazwa, kusetshenziswa ukuxhuma okusuka endaweni kuya endaweni phakathi kwamarouter. A /32 yikheli lehost eyodwa, elijwayelekile le loopbacks nezindlela zomemi. I-calculator iphatha izimo ezimbili ezikhethekile.

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API — sebenzisa le calculator kusuka kukhodi

Nquma le kalkuli njengendawo ephelezelwa i-JSON - akukho isitshixo esidingekayo. Thumela amaxabiso endawo ngezansi njengepharamitha yombuzo noma i-JSON. Funda i-API egcwele →

Ingxenye yendawo

GET https://calculator.free/api/v1/subnet/

curl

curl "https://calculator.free/api/v1/subnet/?ip=192.168.1.10&cidr=24"

JavaScript fetch()

const r = await fetch(
  "https://calculator.free/api/v1/subnet/?" + new URLSearchParams({
    "ip": "192.168.1.10",
    "cidr": "24"
  }));
const data = await r.json();
console.log(data.results);

Izibalo ziyisilinganiso esisetshenziswa ukuqondisa kuphela, hhayi ukucebisa ngezimali, ukwelashwa noma ukukhokha.