Posted: 20th July, 2026
When a warehouse Wi-Fi system stops working, the first call usually goes to the IT team with a complaint about the Wi-Fi. Nine times out of ten, the investigation starts with the access points. Are they online? Is the signal strong enough?
What gets checked far less often is the infrastructure that the access points depend on: the network switches that power them, connect them, and carry every byte of data between the wireless network and the systems that use it.
Wi-Fi gets the attention. Switches get overlooked. And that imbalance is one of the most common reasons warehouse networks underperform, even when the access points are exactly right.
What a Network Switch Actually Does
If you’re not familiar with network switches, here’s the simplest version: a switch is the device that connects everything together.
Your access points don’t operate independently. Each one is connected by a cable back to a network switch, which in turn connects to the wider network: your WMS, your internet connection, your servers, and everything else. The switch is the hub that traffic flows through. Every scan, every AGV instruction, every inventory update travels through it.
In a warehouse, this means the switch is handling traffic from dozens or hundreds of devices simultaneously, all day, every day. In a busy fulfilment centre, that’s a significant workload.
Your Wi-Fi is only as good as what powers it. An access point connected to an underpowered or overloaded switch will underperform, regardless of how well the wireless side has been designed.
The Power Question: What PoE Means and Why It Matters
Modern warehouse access points don’t plug into wall sockets. They’re mounted at height, on ceilings or on racking, and they receive their power through the same network cable that carries their data. This is called Power over Ethernet, or PoE.
The switch at the other end of that cable has to provide that power. And here’s where a common and costly mistake is made: not all switches provide enough power for the access points connected to them.
The different PoE standards
There are three PoE standards in common use, and they’re not interchangeable.
| Standard | Power per port | What it covers |
|---|---|---|
| PoE (802.3af) | Up to 15.4W | Older, simpler access points. Not sufficient for most modern warehouse-grade APs. |
| PoE+ (802.3at) | Up to 30W | Covers the majority of current enterprise access points. Minimum sensible standard for a new warehouse deployment. |
| PoE++ (802.3bt) | Up to 60-90W | Required for Wi-Fi 6E and Wi-Fi 7 models, PTZ cameras, and other high-draw devices. |
Installing a PoE+ access point on a switch that only provides standard PoE means the AP either won’t power on, or will power on in a degraded mode with reduced performance. In a warehouse where the access points are mounted 10 metres above the floor, discovering this problem after installation is a significant inconvenience.
Total power budget
The power standard per port is only half of the equation. A switch also has a total power budget: the maximum it can deliver across all its ports simultaneously. A 24-port PoE+ switch might support 30 watts per port in theory, but have a total budget of 370 watts. If you connect 24 APs each drawing 25 watts, that’s 600 watts of demand against a 370-watt supply. The switch will start throttling power to some ports, and APs will begin to underperform or drop offline.
Getting the power budget right requires knowing what every PoE device on the network actually draws, not just what the maximum rating says. This is part of the infrastructure design work that precedes a proper deployment.
A switch that’s undersized for its power demands won’t announce the problem clearly. It will just quietly throttle some ports, and certain access points will start behaving erratically. The symptoms look like a Wi-Fi problem. The cause is an infrastructure problem.
What Happens When Switches Fail
Network switches are generally reliable pieces of equipment. But they do fail, and in a warehouse environment they’re subject to conditions that accelerate wear: heat, dust, vibration, and in some cases humidity.
When a switch fails, everything connected to it goes offline simultaneously. Not one access point, all of them. In a warehouse, that means every scanner, every AGV, every WMS terminal in that section of the building loses connectivity at once. Operations halt.
This is why the quality and specification of switch hardware matters, and why cheap switches are a false economy in a warehouse environment. The cost of a few hours of operational downtime, lost picks, halted automation, overtime to recover missed targets, will typically exceed the cost difference between a suitable switch and a budget alternative many times over.
Resilience and redundancy
For warehouses where connectivity is genuinely critical, the network design should include resilience planning: what happens if a switch fails, and how quickly can operations be restored?
Options range from keeping spare switches on site for rapid swap-out, to more sophisticated redundant network architectures where traffic automatically reroutes if a device fails. The right approach depends on the operational impact of downtime and the scale of the network. This is part of the conversation that should happen at the design stage, not after the first failure.
The Cabling Behind It All
Switches and access points are connected by physical cables. In a warehouse environment, the specification and installation quality of those cables directly affects network performance and longevity.
Cable category: Cat6 is the minimum appropriate standard for a new warehouse deployment. Cat6A is preferable for longer runs or where future-proofing matters. Older Cat5e cabling may limit the performance of newer access points and should be replaced rather than reused in a network upgrade.
Cable runs: there are physical limits of 90 metres before signal quality degrades. For PoE, the power delivery also reduces over longer runs. Cable routing needs to account for these limits, and for the physical realities of a warehouse environment: runs that cross forklift routes, pass through temperature-controlled zones, or need to accommodate future changes to the racking layout.
Installation quality: a poorly terminated cable connector, a kink in the cable, or a run that’s been stapled too tightly can all cause intermittent faults that are extremely difficult to diagnose. Professional installation with proper testing of every run after installation is not a luxury in a warehouse environment. It’s how you avoid spending days hunting a fault that turns out to be a connector crimped slightly wrong three years ago.
Why This Is Part of the Wi-Fi Conversation
Most wireless network proposals focus on access points. How many, which model, where they should go. The switch infrastructure, cabling, and power budget are often treated as separate, later questions, or left for the client to sort out independently.
That approach routinely leads to problems. An access point specification that assumes PoE+ switching, deployed on a site where the existing switches only deliver standard PoE. A cabling survey that wasn’t done properly, leaving runs that are too long or terminated incorrectly. A power budget that wasn’t calculated, resulting in APs throttling on a switch that can’t supply what they need.
At Wi-Net Connect, we approach warehouse connectivity as a complete system: access points, switches, cabling, power, and management all specified together, against the actual requirements of the site. The wireless design and the infrastructure design happen in parallel, not sequentially.
A complete network isn’t just the access points. It’s everything from the switch ports to the antennas, designed and specified as a single system. Gaps between those components are where performance problems live.
What to Ask When Evaluating a Network Proposal
If you’re reviewing a proposal for a warehouse Wi-Fi deployment, or assessing your current infrastructure, these are the questions worth asking.
What PoE standard do the proposed switches support, and what is the total power budget? Check that the budget covers all connected devices at their realistic draw, not just their maximum rated draw.
Has the cabling been surveyed and tested? Existing cabling should not be assumed to be suitable without testing. New cabling should be tested at the point of installation, with documentation provided.
What happens if a switch fails? Understand the resilience plan: spare hardware on site, replacement lead times, and whether any redundancy has been built into the design.
Is the switch specification future-proof? If you’re planning to add Wi-Fi 6E or Wi-Fi 7 access points, or to increase the number of PoE devices on the network, the switch infrastructure needs to support that headroom.
Who is responsible for the full infrastructure, not just the access points? A provider who is accountable for the complete solution, from switch to antenna, is in a very different position to one who installs APs and leaves the rest to someone else.
How Wi-Net Connect Approaches This
We design and deploy complete warehouse network solutions: access points, switches, cabling, power infrastructure, and cloud management, all specified together and all handled under a single engagement. There’s no handoff to a third party for the infrastructure layer. One team is accountable for the whole thing.
When we assess a warehouse site, the infrastructure review is part of the survey. Our team is Ekahau certified, which means our surveys use industry-standard RF modelling and validation tools, the same tools referenced in the design best practices throughout this blog. We check existing switch specifications, test cabling where it’s being reused, calculate power budgets, and design the infrastructure to support both current requirements and the next phase of the operation.
We work with RUCKUS Networks for the wireless layer and with established infrastructure partners for switching and cabling. Whatever the scope of the project, the full solution is covered by people who know what they’re doing at each layer.
Request a Full Network Assessment
Not just the access points. Wi-Net Connect assesses the complete network infrastructure for warehouse sites: switches, cabling, power, and Wi-Fi, together. If you want to understand what your current setup can actually support, or get a complete solution specified for a new site, get in touch. Call us: 02036 970246. Email: info@wi-netconnect.co.uk.