I am looking for the correct phrase. Can I say "router A is present in network A? or is it "router A is present between network A and network B?"Is a router ever present in a particular network? Thank you.

I am using packet tracer tool to create two simple networks. In topology, I have two routers connected together with network 192.168.3.0. The problem is that when I change the IP addresses of routers to "192.168.3.1/8" and "192.168.3.2/8", everything...