Uncategorized17 Aug 2007 10:35 pm
Subnetting notes
From Blackcannon wiki
- Gateway address is always the first number of the subnet
- Broadcast address is always the last number of the subnet
to find number of usable hosts
2^bb-2
the network number is always 2^bb
to find the number of subnets
divide 256 by 2^bb
to get Subnet Mask
subtract 2^bb from 256
to get slash notation
subtract number of bits borrowed from 32
