Employing a second router as an access point
Employing a second router as an access point
Configuring the DNS server to connect with your primary router. I tried the same approach using a TP Link router, which worked for me. The forwarding and DNS settings were handled accordingly.
You attempted to link the second router via LAN1 while keeping the WAN port inactive, but it seems the explanation omitted that step from your approach.
I confirmed my answer by mentioning Lan ports 2 and 4. There appear to be no WAN ports visible unless you mention the TEL ports, which the connector doesn't accommodate.
This router needs a single IP address since it will act as an access point. Disable the secondary address. Ensure it functions only as an access point without routing capabilities. Turn off the secondary address. Deactivate the primary DHCP server. Disable the secondary DHCP server. Block DHCP relay and confirm the primary IP resides in the same subnet as your first router, enabling devices to connect to the main router and thus the internet.
They also obscured an IP address in those pictures. Was that your public IP? And why would you do this on a secondary router?
Did you verify the router’s AP mode support? That would be the simplest choice. Then I’d simply connect both devices to a switch linked to your main router. Setting up daisy-chained gear like your diagrams often causes problems if not properly arranged.