Net bits
|
Subnet mask | total-addresses |
/20 | 255.255.240.0 | 4096 |
/21 | 255.255.248.0 | 2048 |
/22 | 255.255.252.0 | 1024 |
/23 | 255.255.254.0 | 512 |
/24 | 255.255.255.0 | 256 |
/25 | 255.255.255.128 | 128 |
/26 | 255.255.255.192 | 64 |
/27 | 255.255.255.224 | 32 |
/28 | 255.255.255.240 | 16 |
/29 | 255.255.255.248 | 8 |
/30 | 255.255.255.252 | 4 |
Net Mask | 二進位表示法 | 可分幾個 Network |
255.255.255.0 | 11111111.11111111.11111111.00000000 | 1 |
255.255.255.128 | 11111111.11111111.11111111.10000000 | 2 |
255.255.255.192 | 11111111.11111111.11111111.11000000 | 4 |
255.255.255.224 | 11111111.11111111.11111111.11100000 | 8 |
255.255.255.240 | 11111111.11111111.11111111.11110000 | 16 |
255.255.255.248 | 11111111.11111111.11111111.11111000 | 32 |
255.255.255.252 | 11111111.11111111.11111111.11111100 | 64 |
全站熱搜
留言列表