I have e setup includes fallowing TP-Link Omada devices.

Controller: OC300 1.0

Switch:  TL-SG2428P v1.0

Router: TL-R605 v1.0

Ap : 3x EAP225-Wall(EU) v2.0, 1x EAP110(EU) v4.0, 1x EAP235-Wall(US) v1.0

Current Layout Can bee seen from the link.

I am also sharing my network settings screen as well.

I have to WAN from different ISP. One is working as main. Other is backup. If I use load balancing everything works fine.

But when I set one as primary and select Always Link Primary, and set second as backup when Link Backup is enabled actually it is not working.

If I disconnect primary from router system automatically switches to backup as expected.

If Primary fails network connection omada still thinks primary is online.

My WAN online detection is online and set to 1 minute. Picture of Online Detection

I need to setup this as backup. Omada needs to detect that wan is really up not just router is there.

rEGARDS,