Lab 5 2 - morgan-hanrahan/Tech-Journal GitHub Wiki

Summary

In this lab, we worked with subnetting. We took our starting IP address and subnet mask and used that to create 6 new subnets.

Helpful Info

To subnet a network you first find the number of hosts in the subnet. Then you are going to add that to the last octet of your starting network address and that becomes your second network address. You continue to do this until you reach the number of subnets you were aiming for. From there, you can calculate the broadcast ID and Host ID range.

To determine the broadcast address, you are going to go one lower than the last octet in the network ID. For example, if the network ID is 212.12.24.64, the broadcast address will be 212.12.24.63.

To determine the range of usable IP addresses you add one to the last octet in the network ID, that'll be the lowest possible IP, the highest possible ID is subtracting one from the last octet in the broadcast address.