lab port failover testing

There’s a big difference between hoping new gear will behave the way you want and knowing it will. That’s where lab testing earns its keep. Before rolling out the Ubiquiti UISP Router Pro into production, taking the time to validate its behavior in a controlled environment gives you the confidence to push boundaries without risking downtime. In our case, we’re not just swapping hardware—we’re transitioning from tried-and-true EdgeRouters to a newer platform, and that means assumptions need to be tested, not trusted. One of the key questions we set out to answer in the lab was simple but important: can we use a standard copper port as a WAN interface instead of relying solely on the SFP ports? The UISP pro comes with a WAN port and we need at least 2. After some research, it wasnt clear if we could get 2 WAN ports. Some people reported having luck using the SFP ports. Spoiler alert, i tried it and it did work, WOO HOO !! The next test would be to try just another copper port since SFP's will add additional cost and an extra thing to worry about when troubleshooting. The i had to test how to designate a port as the primary and the other as the failover. On paper, it might seem straightforward—but real-world networking rarely is. By recreating a production-like setup, I was able to experiment safely and confirm that, yes, with the right configuration, a copper port can absolutely take on WAN duties. That kind of flexibility can be a game-changer when you’re working with varying ISP handoffs or limited hardware on-site. The accompanying test walks through the full configuration process step by step. We assign a new WAN interface to a copper port, then adjust firewall rules to allow proper traffic flow—because a WAN port that can’t pass traffic is just an expensive blinking light. From there, we tweak the routing distance values, giving us control over which interface becomes primary and which one sits ready as a backup. As we move away from EdgeRouters and into the UISP ecosystem, this kind of hands-on validation becomes even more valuable. Lab testing isn’t just about confirming features—it’s about uncovering quirks, understanding behavior under pressure, and building confidence in your deployment strategy. Sure, the lab might be a little chaotic—sparking cables, flickering lights, maybe even a bit of smoke—but that’s exactly the place to break things, learn fast, and refine your setup. Because when it’s time to go live, the only surprises you want are how smoothly everything works. Lab - WAN port testing