Hi @FF216, Please see this KB Article: https://community.tp-link.com/en/business/forum/topic/668598

@ursus34, yes the vlan 99/100 traffic needs to flow between the switch and the router. You may have config issues on the MT side too, but I've not used them.

Hi @ursus34, You need to have VLAN 99 and 100 as tagged members on the MT port 6 and SG108PE port 1. The untagged member and PVID would be whatever your using for you default VLAN, guessing it's 1,...

Hi @papyraki, I don't think it's possible with the hardware you listed. The Omada controller doesn't have router functionality itself.

Hi @RockSalt, It might be that the Default Gateway and/or DNS are not correct on your CPE-510s.

@LifestyleNerdy LifestyleNerdy wrote @LifestyleNerdy Thank you for the suggestion. I am just a self techie but not an engineer. Just to understand this, will be the solution something like this ?...