Quick answer
Failover internet connects two or more lines, for example fibre and 4G, or fibre and Starlink, to a dual-WAN router or firewall. If the main line fails, traffic switches to the backup automatically. Some setups also share load across both lines. It protects tills, card machines, CCTV remote viewing and cloud systems.
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Shop all camera products →Key takeaways
- Two lines on different technologies fail less often together.
- A dual-WAN router switches automatically.
- Load balancing uses both lines when both are up.
- Check the backup's data limits and speed.
- Test failover by unplugging the main line.
01Common pairings
| Main line | Backup | Notes |
|---|---|---|
| Fibre | 4G / 5G router | Common and affordable; watch data caps |
| Fibre | Second fibre from another provider | Best resilience where available |
| Fibre | Starlink | Independent of local lines; plan the mounting |
| 4G | Another 4G network | For sites without fibre |
02Setting it up
- 01Choose the linesDifferent providers and technologies.
- 02Pick the routerDual-WAN capable router or firewall.
- 03Set failover rulesWhich line leads and when to switch.
- 04Prioritise key trafficPOS, voice and CCTV first.
- 05TestUnplug the main line and confirm everything keeps working.
03Get it installed
When to call a professionalWe install dual-WAN and test failover before we leave. Call 0113 301 244 or WhatsApp us.
04Frequently asked questions
Is 4G fast enough as a backup?
For tills, email and calls usually yes; for heavy use it depends on the signal and data plan.
Will it switch back automatically?
Yes; when the main line returns, traffic moves back.
Does it work with CCTV remote viewing?
Yes, but remote access settings need to be planned for both lines.
