@Kjell_Arne 

From your description it seems like you have ethernet connectivity issue only with devices connected to the two switches.

If a wired device is connected directly to the router then there's no issue, correct ?

I would connect a device that has this issue directly to the router to exclude any possibility that switches causing it.

Also you may change your ethernet cables - sometimes cable issues can cause such behaviour.

Hi@Kjell_Arne,

Thank you for contacting our community.

As terziyski suggested, it is better to connect these wired devices that are not recognized normally to the LAN ports of the router for comparison. If they can be recognized normally, it means that the problem is from the switch. Please contact the support of the switch for help.

Best Regards~

Hi@Kjell_Arne,

Thank you for your reply.

May I know if your network topology diagram is as follows:

ISP modem—router AX73 )))((( wireless clients

                                           —Switch—wired clients

(Note: — stands for wired connection,)))((( stands for wireless connection)

There may be an IP conflict in the DHCP range you set. It is recommended that you only keep one client device directly connected to the Archer AX73 for comparison.

For printers, generally speaking, it is also recommended that you check whether it has a built-in IP address. You may need to reset the printer and configure the printer again to connect to the network of the new router.

In addition, please check whether you have set up advanced features such as Mac filtering, IP filtering, AP isolation, access control, etc. on the AX73.

What are the models of the switches you mentioned? If it is a TP-Link product, you can also provide the model of the switch, and perhaps we can check whether the devices between the switch and the router are accurate.

Best Regards~

Hi@Kjell_Arne,

Thanks for your update. 

TP-Link switch belongs to our business products. It is recommended that you can contact Business Community for further troubleshooting.