They sit in cupboards, comms. cabinets and server racks.
They don’t make any noise.
And most people never think about them.
But they sit right in the middle of everything.
If something goes wrong here, you feel it everywhere else.
If your network feels slow, video calls keep dropping, or systems pause for no obvious reason, the problem isn’t always your internet. In many businesses, it’s the network switch sitting quietly in the comms cabinet that’s struggling to keep up.
What Is a Network Switch?
The easiest way to think about a switch is an extension lead.
You plug an extension lead into a wall socket and get more places to plug things in.
A network switch does the same thing.
Instead of one network connection, you get 8, 24 or 48 ports to connect devices like computers, phones and Wi‑Fi.
That’s the simple explanation.
But in reality, it’s doing far more than just “adding ports”.
Why It Matters in Practice
Everything runs through your switches:
- Computers
- Phones
- Wi‑Fi access points
- CCTV systems
- Servers
If a switch is slow, everything feels slow.
If a switch fails, everything connected to it drops offline.
That’s why they matter more than people expect.
Power Over Ethernet (PoE)
One of the most useful features in modern switches is PoE.
This allows a single cable to carry both data and power.
So devices like:
- VoIP phones
- Wireless access points
- CCTV cameras
…can run without separate power supplies.
This simplifies installation and gives you far more flexibility with placement, especially for things like ceiling-mounted Wi‑Fi.
In most modern environments, this is expected rather than optional.
Extending Your Network
Network cables can only run for around 100 metres.
After that, you need something to continue the connection.
That’s where switches come in.
They allow you to extend your network into:
- Warehouses
- Offices
- Factory floors
- Outbuildings
Most networks end up expanding this way over time.
Where Things Start to Go Wrong
Switches are rarely replaced proactively.
They get installed and then forgotten about.
Meanwhile, everything else changes:
- Faster broadband
- More users
- More devices
- More cloud services
But the switch stays the same.
That’s where problems start.
A Real Example
Imagine a warehouse with:
- 20–30 staff
- Multiple Wi‑Fi access points
- CCTV cameras
- IP phones
All of it connected through an older 100Mb switch.
The internet might be capable of gigabit speeds.
But every device is competing through that single bottleneck.
Nothing is completely broken.
But everything feels slower than it should be.
That’s exactly the kind of issue we see regularly.
Speed and Performance
Older switches were built for much lower speeds.
It’s still common to find 100Mb switches in networks that now expect 1Gb or more.
The result is rarely obvious failure.
It’s slower performance across everything:
- Files take longer
- Systems lag slightly
- Calls drop in quality
Those small delays add up across a day and across a team.
Resilience and Downtime
A single switch might support dozens of users.
If it fails, all of those people lose access instantly.
No systems
No internet
No work
That’s why larger environments don’t rely on a single device.
They use multiple switches, backup links or stacked setups so that a hardware failure doesn’t take everything offline.
In environments like manufacturing, that can be the difference between staying operational and stopping production.
Network Segmentation
Modern switches allow you to separate parts of your network.
For example:
- Phones on one network
- Office devices on another
- CCTV completely isolated
This limits the risk if a lower-quality or older device is compromised.
Not everything needs to be able to talk to everything else.
Quick Comparison
| Setup Type | Risk Level | Typical Issue |
|---|---|---|
| Basic unmanaged switch | Higher | No visibility or control |
| Older managed switch | Medium | Slow speeds, limited features |
| Modern managed switch | Lower | Better performance and control |
Why Businesses Replace Switches
Switches are usually replaced for practical reasons:
- Network performance
- Increased number of devices
- Introduction of Wi‑Fi and VoIP
- Higher internal network speeds
It’s rarely one big failure.
More often, the network just starts to feel slower or less reliable over time.
The Real Issue
Most network problems build gradually.
Nothing fails outright.
But performance drops, users get frustrated, and systems take longer than they should.
The switch is often at the centre of that.
Final Thoughts
A network switch might look like a simple piece of equipment.
And in basic terms, it is.
But it sits at the centre of your network.
If it’s right, everything works smoothly.
If it isn’t, you’ll feel it every day.
FAQ
What does a network switch do?
It connects devices together within your network and allows them to communicate with each other.
What’s the difference between a router and a switch?
A router connects two different networks together and allows for certain traffic to be blocked, inspected or allowed.
A switch connects devices inside your network.
Can an old switch slow down a network?
Yes. Older switches can limit speed and create bottlenecks even if your internet is fast.
Do I need a managed switch?
In most business environments, yes. Managed switches provide control, visibility and better security features.
How long do network switches last?
They often run for many years, but they can become outdated long before they fail.
What is PoE?
PoE allows a network cable to carry both power and data to devices like phones and Wi‑Fi access points.
Need Help?
At Affirm IT, we start with simple questions:
- Is your network performing as it should?
- Are switches creating bottlenecks?
- Do you have any single points of failure?
- Are older devices increasing risk?
From there, we design networks that match how your business actually works.
If you’re not sure whether your network is holding you back, get in touch with us. At Affirm IT, we specialise in providing comprehensive IT support for small businesses in Heanor, Ripley, Ilkeston, Eastwood and all over the UK
