hi,
i have a question about subnetting using VLSM
i start from
192.168.15.0 /24
then use the /26 prefix with this address and i have:
192.168.15.0 /26
192.168.15.64 /26
192.168.15.128 /26
192.168.15.192 /26
now i re-subnet one of these subnets:
192.168.15.128 /26 and i use /30
how many subnet can i obtain ?
i think 16 because i'm borrowing other 4 bits from 26 to 30.
but i'm not sure if i have to consider the initial /24 , in that case the subnet will be 64.
can someone explain to me ?
do i have to considere 2^4 borrowed from /26
or 2^6 borrewed from /24 ???
thanks