subnetting help again

sq876

i have another question with subnetting this address 10.0.0.0 i have to borrow 12 bits on what octet does the subnet start ? what would be my step size and second usable subnet and range of host and broadcast address be this is really confsuing agian im new to this someone give me a hand please

Node Man

Borrow 12 bits from where?
Each octect is 8 bits. So Class A networks, the "10." uses 8 bits, leaving 24 bits to use between subnet and hosts. so if you use 12 bits for subnets, you have 12 bits for hosts or:

subnets - 4096
hosts - 4094

sq876

sorry i meant i have to borrow 16 bits from the address

Node Man

ok 16 bits, for subnets?

if so, that means the "Class A" uses 8 bits.
and i guess you mean 16 for subnets so 16 bits for subnets
leaving 8 bits for hosts

for:
subnets = 2^16 or 65536 subnets
hosts = 2^8 or 254 hosts

sq876

yes 16 for subnets now im stuck as to what will be me next usable subnet given that address and my range of host and broadcast address

newt.chapman

sq876 wrote: »

yes 16 for subnets now im stuck as to what will be me next usable subnet given that address and my range of host and broadcast address

So 16 is your mask? 255.255.0.0?

Your range would be 10.0.0.1 - 10.0.255.254

sq876

yes sixteen ok thanks i got that part but what would the next subnet be after 10.0.0.0 would it be 10.0.1.0

ITforyears

At least you not dealing with IPv6 yet

IP subnetting made easy | TechRepublic