Rules for Subnetting

N/w ID:                  Network - Constant

                              Host       - 0’s

(Clue: Network ID always start with even number Ex: 172.16.1.128)

Broadcast ID:        Network  - Constant

                               Host        - 1’s

(Clue: Broadcast ID always end with odd number Ex: 172.16.1.255)

Subnet Mask:        Network - 1’s

                               Host       - 0’s