Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate

Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate

Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
Wednesday
Tags: #VLAN
Model: Archer AX72  
Hardware Version: V1
Firmware Version: 1.4.3 Build 20250814 rel.60946(4555)

Hello,

I am experiencing an issue with my TP-Link Archer AX72 router. When VLAN is enabled, devices connected via Ethernet on the same VLAN cannot communicate with each other (e.g., Laptop A cannot ping Laptop B, or Laptop cannot ping a network printer).

Details:

  • VLAN settings: Two VLANs configured, but both affected LAN ports are assigned to the "Internet" VLAN.

  • Issue: LAN-to-LAN traffic is blocked when VLAN is enabled, even if both ports are in the same VLAN. When VLAN is disabled, LAN-to-LAN communication works normally.

This seems to be a firmware bug with VLAN handling, since VLAN should not prevent communication between devices within the same VLAN.

Could you please confirm if this is a known issue, and if there is a planned firmware fix or workaround?

Thank you,

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Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
Thursday

Hello@Lori90 ,

Welcome to our community.

 

May I know if your network topology diagram is as follows:

ISP modem—router )))((( client devices

(Note: — stands for wired connection,)))((( stands for wireless connection )

 

Is there a switch between the router and wired clients? If yes, please directly connect the clients to the router for comparison.

 

Please take a screenshot of the VLAN settings page and send it here.

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Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
Yesterday

  Hello @Joseph-TP ,

Thank you for your reply.

Here is my setup:
ISP modem — Archer AX72 router — Laptop A (LAN)
                 — Laptop B (LAN)
                 — Printer (LAN)
                 )))((( Wi-Fi clients

There is no switch between the router and the wired clients.

When VLAN is enabled, the LAN devices on the same VLAN (Internet) cannot communicate with each other (e.g., ping fails).
When VLAN is disabled, everything works normally.

Please find attached a screenshot of my VLAN settings.

 

Best regards,
[Lori90]

File:
vlan.pngDownload
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