I'm currently using a /22 address space, 192.168.100.x with a flat network, everything in one vlan. I know that's not good, so I want to change it. We will be moving to a new facility in about 6 months, a bigger building with 3 floors, currently we have 1 floor. There will be different buildings, so I'm debating about having two separate internet circuits for each building, or if I should just have both buildings under one internet circuit. The 2nd building is a church, so I'm thinking it might be wiser to have two different physical networks, for security.
I've done some research online, but wanted to see what is best practice when creating vlans? Do I create vlans by department, or by security boundaries, etc... I'm still trying to figure that out. Plus, I think it might be best to configure my existing network with all the vlans that I want to create for the new facility, so I don't want to try to completely reconfigure my network during the move, as it would be a nightmare, right?
I have about 90 computers (PCs and Macs), 80 VoIP phones, 28 servers, 13 APs, 15 network printers, at least 75 or so smartphones/laptops/tablets on the network in any given day.
Any input would be greatly appreciated