Configuration Guide Deco Internet Backup Feature Guide
Configuration Guide Deco Internet Backup Feature Guide

Deco Internet Backup Feature Guide
Internet Backup keeps the Deco Mesh system always online by switching to a backup network when the original ISP network is disconnected to ensure constant internet access. There are 3 backup modes available and only one mode can be enabled at a time.
How to enable Internet Backup
- Open your Deco app, and go to More > Advanced >Internet Backup.
- or Go to More > Internet Connection > Internet Backup.
Hotspot Backup Mode
Allow Deco to connect to a hotspot backup network wirelessly, like your mobile hotspot, or other secured wireless networks nearby.
How to enable Hotspot Backup Mode
1. Set a fixed WAN port
2. Select a nearby hotspot for network backup.
3. (Optional) Edit the Advanced Hotspot Backup settings
- Add multiple wireless networks to the Hotspot List.
- Set Speed Limit and Access Permission.
Both 4G/5G Backup and Hybrid Mesh Backup Modes require having an extra Deco 4G/5G model in the Mesh system, such as Deco X50-5G.
4G/5G Backup Mode
The Deco 4G/5G model is set as the main Deco and works in wireless router mode. Actually, this Internet Backup method is not dedicated to the Deco X50/X55_1.6.0 firmware and many Deco 4G/5G routers already support this feature.
For more details, please refer to How to set up 3G/4G or 4G/5G Backup on Deco router.
Hybrid Mesh Backup Mode
The Deco 4G/5G model is set as the satellite Deco and works in wireless router mode. It is very useful when Deco X50 is the main Deco and Deco X50-5G is added as the satellite unit. After the primary network is restored, Deco will automatically switch back to the ISP cable service.
How to enable Hybrid Mesh Backup Mode
*** The satellite Deco 5G unit also needs to support the "Internet Backup" feature, and currently, Deco X50-5G_V1/V1.2 with firmware 1.2.x is the only Deco 5G router that has added the "Internet Backup" function.
1. Set a fixed WAN port under More > Advanced > WAN Port.
2. Configure 4G/5G Backup settings
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Hi, thanks for the update.
I often used a Dual-WAN connection to represent WAN Aggregation/Load Balance as well as Link Backup/Failover(https://community.tp-link.com/en/home/forum/topic/652560). It seems to be causing confusion, and sorry for the inconvenience. The key point of these features is that Deco needs to support multiple WAN ports.
However, as you mentioned, tagging or fixing the WAN port, there is a workaround to use the backup 5G modem, instead of using "Hotspot Backup".
It would need some modification to the Deco APP, such as
- Fix the port#1(which is connected to the primary ISP modem) as the WAN port
- When the primary ISP went down, you might need to manually change the WAN port to port#2(which is connected to the 5G modem).
- When the primary ISP works well, port#2 is almost in idle.
Theoretically, it works, but the network switch is not an automatic process.
Furthermore, Deco actually uses WAN/LAN auto-sensing. If we don't fix the WAN port, when the primary ISP goes down, it could also search for other available ISPs/modems. So there is a chance it might automatically switch to the 5G backup modem.
But this process adds more “casualties” than fixing the WAN Port. If the IP release time of the primary ISP modem is slower than the 5G backup modem, it would randomly switch to the 5G backup connection even though the primary ISP works well.
Thank you very much.
Best regards.
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