Here's why. Not only must each IP plan mesh but you can't share over the internet with windows networking safely. So you invest (many dollars) in VPN capable routers and gear then configure your VPN lan. Sadly this means at each site you need an Internet gateway server as well since we are now on a VPN WAN.
I've only seen one person do this and they were able to answer such questions as what a netmask would be to support 1024 PCs.
I would like to connect multiple LANs (my (extended) family's different home networks) into one LAN (with mine being the primary) each family has own high speed connections, with routers to multiple PCs and printers, and I have NAS on mine... I set up all of the LANs - so right now they mimic each other - identical (inhouse) IP configs - I assume I will have to give each it's own range of addresses...
Where do I even start... Any help would be greatly appreciated -