#### [[Subnetting networks made easy]] --- Count mask bits Subtract from nearest boundary of 8-16-24-32, get value Calculate 2^value to get subnet size Based on A/B/C count size nets in appropriate octet, 0-127, 128-191, 192-223 If counting addresses per subnet subtract 2 for network and broadcast --- Tags: #lit Reference: [[@bloomfieldSubnettingMadeEasy]] Related: [[!TCM]]