1. Write the number 256 down
2. Find the interesting octet = Mask Octet with the last 1 (one) in it - in binary ---. Convert to decimal = X
3. 256 - X = Block Range
Example: 192.128.2.4/ 25
IP Binary = 11000000.1000000.00000010.00000100
Subnet Mask Binary = 11111111.11111111.11111111.10000000
Fourth Octet is "Interesting Octet"
So .... 256-128=128 = This is my block size
GIVEN THE BLOCK RANGE, ALL ONE NEEDS TO DO IS BEGIN AT 0 AND FILL IN THE BLANKS TO GET THE NETWORK ID (Starting at 0), AVAILABLE HOSTS, AND BROADCAST ADDRESS FOR EACH SUBNET.
See you in class!
