| msk | mbt | sbn | hst | wmk |
|---|---|---|---|---|
| 255 | /32 | 0 | - | - |
| 254 | /31 | 2(128) | 0 | 1 |
| 252 | /30 | 4(64) | 2 | 3 |
| 248 | /29 | 8(32) | 6 | 7 |
| 240 | /28 | 16(16) | 14 | 15 |
| 224 | /27 | 32(8) | 30 | 31 |
| 192 | /26 | 64(4) | 62 | 63 |
| 128 | /25 | 128(2) | 126 | 127 |
- msk=last octet of sub.mask ex. 255.255.255.192
- mbt=mask bit sbn=1st subnet address(how many on network)
- hst=number of hosts
- wmk=wildcard mask (last octet) ex. 0.0.0.63
Using binary notation it is easy to wrote this table upside-down.
- sbn = 256 - msk
- number of subnets = 256 / sbn
- hst = sbn - 2
- Wildcard mask = sbn - 1
Einfach nötig sonst wirds knapp mit der Zeit bei ICND 1 und 2 ;) Gefunden auf The Legendary 5 Minute Courses