LAN goes down when WAN outage

LAN goes down when WAN outage

LAN goes down when WAN outage
LAN goes down when WAN outage
2025-12-19 17:09:36
Model: Deco XE75  
Hardware Version:
Firmware Version: 1.4.5 Build 20241129 Rel 44718

Whenever I have a WAN outage, I lose the LAN.  When I Googled the issue, it came up with this is a known issue. I've had the Deco for 3 yrs and it's always had this problem.

 

When can we expect relief on the XE75?  Is there a non-disruptive setting or config that will work around the issue?

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Re:LAN goes down when WAN outage
2025-12-23 07:21:14

  @Pop060955 

Hi, thank you very much for the feedback.

It is recommended to send an email to forumsupport.usa@tp-link.com with the following information:

Subject: [Forum Escalation][ID 852062] LAN goes down when WAN outage

 

Thread URL:  https://community.tp-link.com/us/home/forum/topic/852062

 

Description: WAN/LAN Auto-sensing and need to fix the WAN port

 

Any Other Relevant Information (Logs, Config Files, Images, etc.):  May I know your ISP and the model number of the ISP gateway(cable or fiber modem)?

 

Once sent, a ticket will be created in our support system, and a member of the team will follow up to gather more information or troubleshoot the cause.

 

Thanks a lot.

Best regards.

(Please also update here with the support ticket ID. Thank you in advance.)

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Re:LAN goes down when WAN outage
Yesterday

  @Pop060955 

 

They've just released a brand new beta firmware for your Deco if you want to test it out. You can read more about it using the link below. If you encounter any problems with the beta, please report them using the same link found below.

 

Deco XE75/XE75 Pro/XE5300 V1 Pre-Release 1.5.0 Brings WireGuard VPN, DoH/DoT, LED Scheduling & More!

 

Thanks. 

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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