Fellas, i'm a newbie learner about the whole Networking thing and im confused about how ip-address assignments work and communication occur. If someone can please explain this to me, i'd be very much thankful. So this is my question;
Lets say Company A uses private Class B address inside their network. They assign i.e 172.16.31.0/24 subnet for their servers in dmz and NAT will take place at their Edge device (firewall or router) and translate this address to a public routable address on the internet. Company B also uses the same class B subnet for their servers. Now these two decide to merge. How will the communication occur if its the same Ip address on both sides.
I really hope i asked the question as simply as i could and if there is something i'm missing for me to understand the big picture, please pitch in. And what kind of WAN circuit between sites would they benefit from ?