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What is a Netmask?: Difference between revisions
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(Created page with "A '''Netmask''' is a 32-bit "mask" used to divide an IP address into subnets and specify the network's available hosts. In a netmask, two bits are always automatically assigne...") |
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{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
! style="width: 200px; background: black; color: white;" | ! style="width: 200px; background: black; color: white;" | Netmask | ||
! style="width: 200px; background: black; color: white;" | ! style="width: 200px; background: black; color: white;" | 255. | ||
! style="width: 200px; background: black; color: white;" | ! style="width: 200px; background: black; color: white;" | 255. | ||
! style="width: 200px; background: black; color: white;" | ! style="width: 200px; background: black; color: white;" | 255. | ||
! style="width: 200px; background: black; color: white;" | ! style="width: 200px; background: black; color: white;" | 255 | ||
|- | |- | ||
! style="text-align: left; vertical-align: top;" | Netmask length | ! style="text-align: left; vertical-align: top;" | Netmask length | ||
| style="text-align: left; vertical-align: top;" | 8 | | style="text-align: center; vertical-align: top;" | 8 | ||
| style="text-align: | | style="text-align: center; vertical-align: top;" | 16 | ||
| style="text-align: | | style="text-align: center; vertical-align: top;" | 24 | ||
| style="text-align: | | style="text-align: center; vertical-align: top;" | 32 | ||
|- | |||
|} | |||
So, for example, a Netmask that is 24-bits long is '''255.255.255.0''': | |||
{| class="wikitable" | |||
|+ | |||
! style="width: 200px; background: black; color: white;" | Netmask | |||
! style="width: 200px; background: black; color: white;" | 255. | |||
! style="width: 200px; background: black; color: white;" | 255. | |||
! style="width: 200px; background: black; color: white;" | 255. | |||
! style="width: 200px; background: black; color: white;" | 0 | |||
|- | |||
! style="text-align: left; vertical-align: top;" | Netmask length | |||
| style="text-align: center; vertical-align: top;" | 8 | |||
| style="text-align: center; vertical-align: top;" | 16 | |||
| style="text-align: center; vertical-align: top;" | 24 | |||
| style="text-align: center; vertical-align: top;" | - | |||
|- | |- | ||
|} | |} | ||