Hello - I have 2 questions about subnets. 1) I would like to understand and get guidance on how exactly to add another subnet to our existing network, for the purpose of expanding our IP addresses - since we are almost out of our Class C 254 IP scope (192.168.1.x). Once a 2nd one is added, I will move some devices/computers over to it, to free up our first scope. 2) I need to understand how to allow 2 subnets to communicate over the same network. I am not sure if that means I need to add another VLAN, or if there is another method.
This is a Windows 2008R2 Server LAN, on a Cisco Catalyst 3850 backbone.