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No LAN if no internet on BE85

No LAN if no internet on BE85

No LAN if no internet on BE85
No LAN if no internet on BE85
2025-11-02 11:25:26 - last edited a week ago
Tags: #Network Connectivity #Feature Request #Connection Preference
Model: Deco BE85  
Hardware Version: V1
Firmware Version: 1.2.1 Build 20250731 Rel. 15505

Why the BE85 does not allow LAN connectivity if my ISP internet connection is down? 

My ISP modem is connected via cable to 1 port in my DECO BE85. I don't have access to any of my wired connections via WiFi. I can only ping the BE85.

What's the solution for this? it just does not make any sense at all for a router to behave like this. Especially one with this price tag.

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#1
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1 Accepted Solution
Re:No LAN if no internet on BE85-Solution
2025-11-03 06:21:23 - last edited a week ago

  @dogocheco 

Hi, thank you very much for the feedback.

It is more likely due to WAN/LAN auto-sensing

Could you please send an email to support.forum@tp-link.com so that I can check with the senior engineer for a workaround?

Subject: [Forum Escalation][ID 846818]No LAN if no internet on BE85

 

Wait for your reply.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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#3
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7 Reply
Re:No LAN if no internet on BE85
2025-11-02 23:10:11

  @dogocheco 

 

What color is the led on the unit? Did you set it up via the deco app? If yes did you set it up in router or AP mode? 

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1
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#2
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Re:No LAN if no internet on BE85-Solution
2025-11-03 06:21:23 - last edited a week ago

  @dogocheco 

Hi, thank you very much for the feedback.

It is more likely due to WAN/LAN auto-sensing

Could you please send an email to support.forum@tp-link.com so that I can check with the senior engineer for a workaround?

Subject: [Forum Escalation][ID 846818]No LAN if no internet on BE85

 

Wait for your reply.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
Recommended Solution
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#3
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Re:No LAN if no internet on BE85
2025-11-03 13:16:09

  @David-TP thanks. I just sent an email about this problem. 

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#4
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Re:No LAN if no internet on BE85
2025-11-03 13:17:20

  @HelpFixDecoApp led becomes red if no internet. And the deco is in router mode and my ISP router acts as a modem only

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#5
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Re:No LAN if no internet on BE85
2025-11-04 06:20:35

  @dogocheco 

Hi, thanks. The email has been escalated to the senior engineer for further assistance.

Please check the email later for more suggestions.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65/BE65 Pro 1.2.0 Enhanced Mesh Network Stability and System Security ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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#6
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Re:No LAN if no internet on BE85
Yesterday

  @David-TP What was the resolution for this? I just realized a big design flaw in my setup and stumble across this same issue. No WAN, no LAN access for my hardwired devices connected directly to the BE85. This definitely seems to be off as the LAN feature shouldn't be dependent on a WAN connect. I suspect this has something to do with the LAN/WAN auto-sensing code.

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#7
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Re:No LAN if no internet on BE85
10 hours ago
Hi, it seems is that auto sensing thing. So the workaround is to fix a specific por to act as internet port. So you need support to do that. I would be glad once you can do that via the app.
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#8
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Helpful: 2

Views: 180

Replies: 7

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