@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).

@Mr_Larry You need some port forwarding. Here's a guide : How to Manage Omada Devices at Different Sites Using Omada SDN Controller via Port Forwarding (Controller 5.0 or Above) These are the ports...

@arrmo Did your Omada Controller used the removed DNS server ? If yes did you reboot your Omada Controller's PC/Server/VM so it gets the new DNS address ? You should also verify that your...

@sobephish It supports link backup (load balancing). It is mentioned in the Advanced Features under the specifications page. Here's a screenshot of what it looks like in the Omada Controller :

@Julian2111 What is your controller version ? You need at least version 5.15.x.x for the last two ER8411 firmware. As of today the latest version of the software controller is 5.15.24.17.