Just a quick update - I also tried this solution with port forwarding (in Archer C1200 this is done via NAT Forwarding => Virtual servers). After configuration in Router B, I was able to access IP...

@terziyski Just a quick update - I once again tried your solution with static route and discovered that I can access my IP cameras from Router A network (e.g. via VLC player). I didnt try that before...

@terziyski Thank you. I wonder then, why I can ping (acceess) devices on main network (router A) when I am connected to IoT network (router B) ? Main problem is that I can not acceess (from main...

@terziyski If I set static route via gateway 10.0.0.2, I receive - Request timed out

My network has two TP-Link Archer C1200 routers. Router A (main router) and Router B (router for IoT devices). There is Ethernet cable from Router A LAN1 port to Router B WAN port. Router B is...