@pkks297 If you are using the Omada Controller you need to go into your LAN interface settings (Site view > Settings > Wired & Wireless Networks > LAN > Your LAN network) check the 'Enable' box and...

@invadia Yes ! or you'll lose the connection to the controller.

@invadia You won't be able to adopt the ER8411 if the ER605 is still Online (adopted). You need to first forget the ER605 and then you will be able to adopt the ER84110. You will lose internet for...

@invadia Here's how I did it when I replaced my ER7206 for the ER8411 : 1- Make sure that the new gateway is in the same subnet as the current network 2- Make a backup of the site and configuration...

@invadia You can check this post : https://community.tp-link.com/en/business/forum/topic/596292. It's old but still the same process for replacing gateways. - Is there a recommended migration...

@Cepheus0815 Whats your controller version ? You need at least Omada Controller 5.15.20.38 (firmware V1_1.35.5 for OC200 v1 or firmware V2_2.20.5 for OC200 v2).