255.255.255.0 Mashigin Subnet

Adireshin subnet mask 255.255.255.0 adireshin ita ce mashagin subnet mafi yawan da ake amfani dasu akan kwakwalwa da aka haɗa da cibiyoyin Intanet (IPv4) . Bayan amfani da shi akan hanyoyin sadarwa na gidan gida , zaku iya haɗu da wannan maskurin akan gwajin takaddun shaida na yanar sadarwa irin su CCNA .

Shafuka suna aiki kamar fences masu kama-da-wane, ta raba wani toshe na adireshin IP zuwa ƙananan raka'a. Wannan aikin yana sauke haɗin gizon cibiyar sadarwa kuma yana ba da izinin samun dama ta hanyar granular a fadin shafuka.

A mashin subnet yana gano kowane ɗigon.

255.255.255.0 da Subnetting

Shafukan gargajiya sunyi aiki tare da cibiyoyi masu zaman kansu da suka ƙaddara adireshin IP zuwa ɗaya daga cikin biyar (Class A / B / C / D / E) bisa ga darajar lambar adireshin IP.

Maɓallin subnet mask 255.255.255.0 sabobin tuba zuwa darajar binary 32-bit:

• 11111111 11111111 11111111 00000000

Lambobi 0 na wannan mask din sunada adadin IP na subnet-8 bits ko har zuwa adireshin 256 a wannan yanayin. Za'a iya ƙayyade yawan ƙididdigar ƙananan ƙananan ƙananan gida ta hanyar gyaran mask kamar yadda aka nuna a teburin da ke ƙasa.

Maskurin subnet mashahuran da ba a dace ba (wanda ake kira netmask ) yana sa wasu nau'in haɗin haɗin yanar sadarwa .

Subnets da CIDR

A cikin tsarin al'ada na al'ada, yawancin adiresoshin IP ba su ɓata ba saboda masu bada sabis na intanet da manyan hukumomi sun adana adireshin adireshin da ba za a iya raba su ba.

Yawancin intanet din sun juya zuwa hanyar sadarwar IP ba tare da kariya ba don tallafawa manufofi na ƙaddamar da sauƙi da kuma jurewa da karuwa a buƙatar adireshin Intanet na IPv4 a shekarun 1990.

Cibiyoyin maras tabbatattun tuba sun sake mayar da martani na subnet wakilci ga wani ɗan gajeren labari na ƙididdiga bisa adadin lambobi 1 a mask.

Hanyar Inter-Domain mara kyau maras kyau na rubutun adireshin IP da haɗin gizon haɗin da ke haɗe a cikin nau'i:

xxx.xxx.xxx.xxx/n

A nan, n wakiltar lamba tsakanin 1 da 31 wanda shine adadin 1 ragowa a cikin mask.

CIDR tana goyan bayan adireshin IP maras amfani da abokan hulɗa na cibiyar sadarwa tare da lambobin sadarwar IP na zaman kansu na al'ada. Routers da ke goyan bayan CIDR sun gane waɗannan cibiyoyin sadarwa kamar hanyoyin mutum, duk da cewa suna iya wakiltar wata ƙungiya ta al'ada.

Ƙungiyoyin Cibiyar

Ƙungiyar InterNIC da ke gudanar da sunayen yanan yanar gizon suna raba adiresoshin IP cikin ɗalibai. Mafi yawan waɗannan sune azuzuwan A, B, da C. C na cibiyoyin C na duk suna amfani da mask din subnet na 255.255.255.0.

Yin amfani da 255.255.255.0 a matsayin adireshin IP

Ko da yake an bayyana a cikin nau'i na adireshin IP, na'urori na cibiyar sadarwa kawai suna amfani da 255.255.255.0 a matsayin mask kuma ba a matsayin adireshin IP aiki ba. Ƙoƙarin yin amfani da wannan lambar (ko duk lambar IP da ta fara da 255) a matsayin adireshin na'urar yana sa haɗin hanyar sadarwa ta IP ya kasa saboda ƙaddamar da jeri na lamba a kan tashoshin IP.