We were truing to setup a large WiFi Access network in our apartment with EAP models and a Load Balancing Router (from UTT brand) and faced issues. The discussion is here:
Per feedback and analysis, it seems the problem is with our VLAN Configuration and VLAN-unaware Wifi Router, due to which clients on SSIDs in our system (totally around 8) each mapped to its own VLAN are unable to get DHCP addresses from the Router, beacuse the EAPs won't support Asymmetric VLANs (two Untagged VLANs per SSID).
So we plan to alter the design as below:
As per this architrecture, we may not need Asymmeteric VLAN support from our Dlink switches, but our Load balancing router needs to be
(1) VLAN aware on its LAN interface. We use a 4xWAN, 1xLAN setup of the UTT router.
(2) A seperate subnet and DHCP pool for each Wifi VLAN on the router
From The user Guide of V8 of this router, we can see that it has support of multiple VLANs with egress tagging of 802.1q VLAN-IDs. But we could not see support for Multiple DHCP server pools, each getting tied to one VLAN interface.
(A) If we replace the UTT router with TL-ER5120 can it handle the above networking scenario ?
(B) Are seperate DHCP servers for each VLAN really required ? Or ER5120 v4 can handle the above case with only 1 DHCP server pool and internally handle the routing of DHCP response back to requesting client based on the VLAN tag the request carried (mapped to an interbala virtual interface probably) ?
(C) Also can the DHCP pools be larger than 256 IP addresses (like 10.0.0.0/16) ? We had a problem before with TL-R480T+ V8, where the pool was limited to 256 IP addreses (like 10.0.0.0.0/24 only)
It will be nice if someone can review the entire setup and give feedback.