Now I need to disable Wifi radio on RUTM10 and use TAP400 for wifi. I tried myself, but i there is always something not working properly. I am stuck. I think it is smarter to start from scratch than search for setup mistakes I have already made. I would like to get a step by step guide to achieve same or VLAN based functionality with new hardware setup.
Rutm10 built in Wifi capabilities currently serving Lan and Guestlan both on 2.4g. Rutm10 5g is disabled. Guest network set up according to link mentined above.
I want to disable rudm10 built in wifi, and enable tap400 5g for lan and 2.4 for guest lan.
Tap400 is connected and linked using device manager feature. I can connect to tap400 wifi, but cannot receive dhcp address. I think it is related to two dhcp servers configured on rutm10.
Your diagnosis is correct - the DHCP issue is caused by a conflict between the RUTM10’s two DHCP servers and the TAP400 attempting to receive an address on the same interface. Here is a clean step-by-step guide to achieve the desired setup from scratch.
Disable RUTM10’s built-in Wi-Fi
Navigate to Network → Wireless → SSIDs and disable both the 2.4 GHz and 5 GHz interfaces. This eliminates SSID conflicts.
Configure VLAN tagging on RUTM10 (LAN3)
The TAP400 uplink port (LAN3) must carry both networks simultaneously:
Keep the main LAN as the untagged (native) VLAN on LAN3.
Add Guest LAN as a tagged VLAN (e.g., VLAN ID 10) on LAN3.
This ensures that traffic from both SSIDs travels over the single cable while remaining logically separated.
Verify RUTM10 DHCP servers
Confirm that both DHCP servers remain active and are scoped correctly:
Main LAN interface: e.g., 192.168.1.0/24
Guest LAN interface (GuestLan, created per the guest WiFi wiki guide): e.g., 10.10.10.0/24
No changes are needed here as long as the interfaces are correctly bridged to the VLAN configuration from Step 2.
Set TAP400 IP settings to DHCP
In the TAP400 WebUI, navigate to Network → IP Settings and set the mode to DHCP. The TAP400 will obtain its management IP automatically from the RUTM10’s main LAN DHCP pool. No static IP or gateway needs to be set manually.
Configure TAP400 SSIDs with VLAN IDs
Navigate to Network → Wireless → SSIDs on the TAP400 and configure two access points:
SSID 1 (Main LAN — 5 GHz):
Mode: Access Point
Radio: 5 GHz
VLAN ID: default (untagged — bridges to main LAN)
Set your SSID name and password
SSID 2 (Guest LAN — 2.4 GHz):
Mode: Access Point
Radio: 2.4 GHz
VLAN ID: 10 (or whichever VLAN ID matches the Guest LAN tagged VLAN set in Step 2)
Set your Guest SSID name and password
The VLAN ID field in the TAP400 SSID configuration (Network → Wireless → SSIDs → Edit → General Setup) maps each SSID directly to the corresponding VLAN tag, so client traffic is forwarded to the correct RUTM10 interface and DHCP pool.
Verify firewall rules on RUTM10
Ensure the existing Guest LAN firewall zone is still correctly configured per the wiki guide:
Guest zone: Input Accept, forward allowed only to WAN
Traffic rule dropping ports 22, 80, 443 from Guest zone to Device (input) remains in place
No firewall changes are needed on the TAP400 itself.
If you continue to experience issues after following these steps, please share screenshots of the TAP400 SSID configuration and RUTM10 VLAN/interface settings so we can investigate further.