We currently have a network connecting several locations. Each has a private IP scheme (IPs changed for example below, but idea is the same):
Site 1 192.x.50.x/21
Site 2 192.x.30.x/21
I would like to change to a /16 bit subnet so I could use more IPs and not risk running out.
Site 1 192.178.x.x/16
Site 2 192.188.x.x/16
I am wondering if anyone has done this and has a design plan/article they followed and would share. I'm figuring router first (internal), firewall, switches, servers, DHCP. Any guidance would be appreciated.