Hi,

My home network has multiple devices (e.g. printers) connected via cables to a small 8-port switch to my router.

The router has 3 of its ports connected to other devices (e,g. backup disk), and one port connected to the switch.

This has worked well for years now.
Last week, my router stopped recognizing any devices connected to the switch. Ping from the router does not reach any device.

I did not change any settings.

If I plug the wire (e.g. from a printer) directly to the router, the device works fine.

I tried using a different switch with the same results.

I tried using another Archer C7 router with the same results.

I am stumped. Any thoughts on why this is happening? Any troubleshooting steps you recommend?