I have read the guide and still not sure what this option does because you still go into the switch config and select which ports are assigned to what profile.

https://www.tp-link.com/us/user-guides/omada-sdn-software-controller/chapter-4-configure-the-network-with-omada-sdn-controller.html#ug-sub-title-3

  @FreeSamples Under LAN Interface you only choose the port for the Gateway（which LAN port will send out this VLAN Tagged data）

For the switch you need to go to Devices list-> Choose the Switch-> Port

  @Somnus 

That seems to make sense. If that is the case why can I not select the ports 1, 7, 8, 9 or 10?

Some possible mitigating factors:

• 7,8 are occupied by EAP670s and are already listed as not possible to be gateways.
• 9,10 are unoccupied SFP slots

Although port 1 is the trunk port where the actual gateway resides, it is not a TP link gateway, but a gateway none-the-less. When I migrate the trunk port to port 2 on the switch, port 2 is still as an option. Which makes me wonder why 5 ports on a 8 (+2) port switch only have 5 ports as options for the gateway. Is this a limitation of the platform?

Just as a note, I do not have any other vLANs (besides for the default port, which you cannot change) in interface mode.

  @Somnus 

Wow, that makes a lot of sense. Thank you for the input!