Port forwarding through 2 routersFor years I was trying to Port forward through 2 routers. 1) Main router (Hall) 2) Second router (room) May help someone
THIS IS A SITUATION WHEN THE 2ND ROUTER IS CONNECTED TO THE FIRST ROUTER. (Via Extender, Powerline, Ethernet, etc)
Step 1: You need to reserve the IP address for the second router by configuring the First router.
Step 2: Use the DMZ server in the first router and let the traffic reach the second router. Once you've reserved the IP of the second router, enter that IP on the first router's DMZ menu.
Note: Make sure UPNP is enabled on both the routers, Firewall is off for Private network, and upnp is function on PC, mobile etc.
Hope this helps!!!