Kikokotoo cha CIDR
Kikokotoo cha CIDR kwa IPv4 na IPv6: safu ya mtandao, barakoa ya subnet, barakoa ya wildcard, idadi ya wenyeji, na kugeuza anwani ya mwanzo na ya mwisho kuwa vitalu vya CIDR.
Kuhusu Kikokotoo cha CIDR
Kikokotoo cha CIDR kwa IPv4 na IPv6: safu ya mtandao, barakoa ya subnet, barakoa ya wildcard, idadi ya wenyeji, na kugeuza anwani ya mwanzo na ya mwisho kuwa vitalu vya CIDR.
Sehemu ya kitengo cha “Data na mitandao” cha SmartCalcy. Kinaendeshwa kwenye kivinjari chako bila akaunti, kinatumia sarafu na vipimo vyako (vibadilishe juu ya ukurasa), na kinatoa makadirio kwa taarifa tu, kwa hiyo angalia mwongozo rasmi kabla ya kutegemea matokeo.
Jinsi ya kutumia Kikokotoo cha CIDR
Kinachohesabu na wakati wa kukitumia
Kinakokotoa masafa, barakoa ya subneti, barakoa ya wildcard na ukubwa wa kitalu cha CIDR kwa IPv4 au IPv6, kinapokea anwani yenye barakoa ya nukta, na kubadilisha anwani ya kuanzia na ya mwisho kuwa orodha fupi zaidi ya vitalu vya CIDR vinavyozifunika kikamilifu.
Jinsi ya kukitumia, hatua kwa hatua
- Chagua “Kitalu cha CIDR” au “Masafa ya anwani”.
- Weka kitalu kama 192.168.10.0/22, au anwani ya kwanza na ya mwisho ya masafa.
- Soma anwani ya kwanza na ya mwisho, barakoa na idadi ya wenyeji.
- Kwa masafa, nakili orodha ya vitalu vya CIDR.
Maana ya kila ingizo
- CIDR Kipindi, au address with mask – An IPv4 or IPv6 address followed by /prefix, or an IPv4 address and a dotted mask such as 255.255.252.0.
- Kwanza na mwisho address – The two ends of a range, both IPv4 or both IPv6.
Jinsi ya kusoma matokeo
- Address masafa – The first and last address of the block, and the number of addresses.
- Masks – Subnet mask na wildcard mask kwa IPv4.
- Usable hosts – Addresses available for devices: the total minus the network and broadcast addresses, except /31 and /32.
- CIDR Bloku – For a masafa, the Kiwango cha chini set ya Bloku that covers it.
Fomula
A /n block has 2^(bits − n) addresses, where bits is 32 for IPv4 and 128 for IPv6. The network address is the given address with the host bits set to zero. For IPv4 the usable hosts are 2^(32 − n) − 2. IPv6 uses BigInt arithmetic for exact results.
Mfano uliofanyiwa kazi
192.168.10.0/22 covers 192.168.8.0 hadi 192.168.11.255, which ni 1,024 addresses na 1,022 usable hosts, with mask 255.255.252.0.
Dhana na mipaka
- Usable hosts follow the usual convention of removing the network and broadcast addresses. /31 links use both addresses and /32 is a single host.
- IPv6 Bloku have no broadcast address.
- A range that does not fit one block returns several blocks.
Makosa ya kawaida
- Entering a host address and expecting it to be the network address. The tool shows the real network address.
- Using a non-contiguous mask such as 255.0.255.0, which is not valid.
- Mixing an IPv4 first address with an IPv6 last address.
Maswali yanayoulizwa mara kwa mara
Nukuu ya CIDR ni nini?
Njia ya kuandika masafa ya anwani kama anwani na urefu wa kiambishi, kama 10.0.0.0/8, ambapo kiambishi ni idadi ya biti za mwanzo zisizobadilika.
/24 ina wenyeji wangapi?
Anwani 256 na wenyeji 254 wanaoweza kutumika.
Barakoa ya wildcard ni nini?
Kinyume cha barakoa ya subneti, inayotumika katika orodha za ufikiaji. Kwa 255.255.255.0 ni 0.0.0.255.
/64 ni nini katika IPv6?
Ukubwa wa kawaida wa subneti moja ya IPv6, yenye anwani 2^64.
Je, masafa yanaweza kuwa kitalu kimoja kila wakati?
Ikiwa tu yanaanza kwenye mpaka na ukubwa wake ni kipeo cha mbili. Vinginevyo yanagawanywa kuwa vitalu kadhaa.
Zana zinazohusiana
Kipindi Maelezo
- Anwani ya mtandao
- 192.168.8.0
- Subnet mask
- 255.255.252.0
- Wildcard mask
- 0.0.3.255
- Hosti ya kwanza inayotumika
- 192.168.8.1
- Hosti ya mwisho inayotumika
- 192.168.11.254
- Anwani ya broadcast
- 192.168.11.255
- Jumla ya anwani
- 1,024
- Usable hosts
- 1,022
- Cha Prefix leng
- /22
- Mask huko Binari
- 11111111.11111111.11111100.00000000