@Klaw81 

Thanks for reaching out! I understand that after every power outage, your Deco system seems to prevent internet access for all devices (including those wired directly to your router), and you have to disconnect the Decos and power cycle the router to restore connectivity. This is definitely frustrating, and I can help you troubleshoot this issue.

This behavior suggests there may be a startup sequence or configuration issue between your ISP modem/router and the Deco system. Here are some troubleshooting steps to help resolve this:

1. Check the proper startup sequence:
After a power outage, try this order: First power on your ISP modem/router and wait 2-3 minutes for it to fully establish internet connection, then power on your main Deco, and finally power on any satellite Deco units.

2. Check Deco's LED status:
When the issue occurs, check if your main Deco shows a solid red light, which indicates it cannot connect to the internet.

3. Verify cables and connections:
• Try using a different Ethernet cable between your ISP modem/router and the main Deco
• Try connecting to a different Ethernet port on the main Deco
• Ensure the cable is securely connected

4. Configure DNS settings manually:
Open the Deco app, go to MORE > Internet Connection > tap 'IPv4 Connection' > DNS Address. Select 'Manual' and input '8.8.8.8' and '1.1.1.1' as the primary and secondary DNS servers. This can help with connectivity issues after power restoration.

5. Check advanced settings that may affect connectivity:
• In the Deco app, go to MORE > Advanced > IPTV/VLAN. If IPTV port is enabled, make sure you're not using that port to connect to your ISP modem
• Go to MORE > Advanced > WAN Port. If this feature is enabled, ensure you're using the correct Ethernet port on the Deco to connect to your ISP modem

6. Consider MAC Clone:
If your ISP modem/router works fine when a PC is connected directly but not with Deco, MAC cloning might help. You can configure this by referring to TP-Link's MAC Clone guide: https://www.tp-link.com/en/support/faq/2925/

If the issue persists after trying these steps, please reply 'talk to agent' to connect with our support team for further assistance.

  @Klaw81 

This has happened to other users in the past and the only way they were able to get there system back up was to go to the location and power cycle everything 

With one user we suggested using smart plugs for each router. So as long as the internet comes back up you can power cycle the routers by turning each smart plug off and then on 

  @Klaw81 

Hi, can I have the model number of the main DHCP router?

It is recommended to disable "Smart DHCP" under Deco App>More>Advanced when Deco X20 is in AP mode.

If it didn't help, can you share a detailed topology of the network layout, for example:

ISP router---switch---main Deco X20---<WiFi Backhaul> other two satellite X20s

                         \------other wired devices, such as NAS/NVR, etc.

Thank you very much.

Best regards.