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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
2025-09-10 12:38:32 - last edited 2025-10-18 15:43:26
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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#1
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1 Accepted Solution
Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate-Solution
2025-09-16 03:10:06 - last edited 2025-10-18 15:43:26

Hello@Lori90 ,

Thanks for getting back to me.

 

Did you get the VLAN ID from your ISP? Who is your ISP?If your ISP does not provide a VLAN ID, there is no need to enable the IPTV/VLAN ID function.

 

The VLAN ID under IPTV/VLAN ID is primarily used to enter network configuration information on the router, not to divide different subnets. After disabling the VLAN ID, your TV and other wired devices can still connect to the Internet, indicating that you do not need to enable VLAN.

 

Best Regards.

 

 

 

Welcome to Our TP-Link Community. Check Out the Latest Posts: △Enhanced EasyMesh Support with Extended Guest/IoT/MLO Networking and Advanced Features for BE550 V2 △New Firmware for Archer BE900 V2 to Support Multi-WAN, DoH/DoT, EasyMesh in AP Mode and More △New Firmware Update for Archer BE260/Archer BE400 to Support VPN Merge, New ECO Mode, and More △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN If you found the post or response helpful, click Helpful. If an answer solves your problem, click Recommended Solution so that others can benefit from it.
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Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
2025-09-11 11:46:00

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.

Welcome to Our TP-Link Community. Check Out the Latest Posts: △Enhanced EasyMesh Support with Extended Guest/IoT/MLO Networking and Advanced Features for BE550 V2 △New Firmware for Archer BE900 V2 to Support Multi-WAN, DoH/DoT, EasyMesh in AP Mode and More △New Firmware Update for Archer BE260/Archer BE400 to Support VPN Merge, New ECO Mode, and More △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN If you found the post or response helpful, click Helpful. If an answer solves your problem, click Recommended Solution so that others can benefit from it.
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Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate
2025-09-12 08:03:49

  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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#3
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Re:Archer AX72 VLAN bug – LAN devices on same VLAN cannot communicate-Solution
2025-09-16 03:10:06 - last edited 2025-10-18 15:43:26

Hello@Lori90 ,

Thanks for getting back to me.

 

Did you get the VLAN ID from your ISP? Who is your ISP?If your ISP does not provide a VLAN ID, there is no need to enable the IPTV/VLAN ID function.

 

The VLAN ID under IPTV/VLAN ID is primarily used to enter network configuration information on the router, not to divide different subnets. After disabling the VLAN ID, your TV and other wired devices can still connect to the Internet, indicating that you do not need to enable VLAN.

 

Best Regards.

 

 

 

Welcome to Our TP-Link Community. Check Out the Latest Posts: △Enhanced EasyMesh Support with Extended Guest/IoT/MLO Networking and Advanced Features for BE550 V2 △New Firmware for Archer BE900 V2 to Support Multi-WAN, DoH/DoT, EasyMesh in AP Mode and More △New Firmware Update for Archer BE260/Archer BE400 to Support VPN Merge, New ECO Mode, and More △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN If you found the post or response helpful, click Helpful. If an answer solves your problem, click Recommended Solution so that others can benefit from it.
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