@JonSisk "Fiber" means the SFP port on the tp-link switch. And on tp-link switch, the SFP port speed can only be static 100M/1000M/10G If SFP-SFP connection is not working, it's better to check the...

@JonSisk What is the SFP module you are using on both side switches? Are thay both 1G speed module?

@ghl 20210512 should be the newer one. The published data is useless. From my experience, it just mean "when did this firmware upload to official website", not the exactly firmware published data..

@Meridion Did you enable Guest Netwrok on EAP SSID settings? For Omada EAP, the guest network means the client devices can only access Internet and the gateway, but no access to your main LAN...

@Drrmqjones Could be the switch issue. If you have two computers, you can use Iperf to test the switch hardware performance: How to use Iperf to test the speed of TP-Link switches

Good to know!