Examplel: Different-size subnets An organization gets the block of 125.47.32.0/25. The organization contains three sections. They need 55, 15, and 4 IP addresses respectively. How do you divide the block into sub-blocks s.t. each section contains the smallest possible subnet? (You may end up with some occupied and some unused ranges of IP addresses). List the 3 used sub-blocks 01111101.00101111.00100000.00000000 125.47.32.0/25 Solution: Range of IP addresses in this block: 125.47.32.? to 125.47.32.3? Block size 2 How to partition this block? 3 127