Adding a network switch is one of the easiest ways to expand a wired home network. A switch gives you additional Ethernet ports for computers, televisions, gaming consoles, cameras, access points, and other wired devices. This guide explains how network switches work, compares plug-and-play and managed switches, and helps you decide which type makes the most sense for your home network.
Most home routers include only a handful of Ethernet ports. That may be enough when you first build your network, but those ports can disappear quickly as you add desktop computers, smart TVs, gaming systems, wireless access points, cameras, network storage, and other wired devices.
A network switch expands the number of Ethernet connections available on your network. Each wired device connects to the switch with an Ethernet cable, while another Ethernet cable connects the switch to your router.
This arrangement allows all of the connected devices to communicate on the local network and access the internet through the router.
Every Ethernet-connected device has a hardware identifier called a MAC address. When devices communicate through a switch, the switch learns which MAC addresses are connected to each port.
This information is stored in a MAC address table, which is also commonly called a CAM table.
For example, if your desktop computer sends network traffic to your television, the switch can identify the port where the television is connected and forward the traffic to that port. It does not need to send every packet to every connected device.
If a device needs to reach the internet, the switch forwards that traffic toward your router, which then handles the connection outside your local network.
Simply adding a network switch does not automatically mean your wired devices become slower. The individual Ethernet ports operate at the speeds supported by the switch and the connected equipment.
A gigabit switch, for example, can provide gigabit Ethernet connectivity to compatible devices. The practical performance of the network can still depend on factors such as the uplink to the router, simultaneous traffic, cabling, and the capabilities of your other network equipment.
A plug-and-play switch is designed for simplicity. These switches generally require no configuration and work immediately after being connected.
They are commonly used when someone simply needs additional Ethernet ports and does not want to manage network settings.
The main advantage is simplicity. Connect the switch to your router, connect your Ethernet devices, and the switch begins working.
Because there are few or no settings available, there is also very little opportunity to accidentally misconfigure the network.
Plug-and-play switches can be an excellent choice for basic home networks where the primary goal is simply adding more Ethernet ports.
PoE versions can also provide power to compatible devices, such as cameras or wireless access points, without requiring the user to configure advanced switch settings.
The simplicity of an unmanaged or plug-and-play switch also creates limitations.
A managed switch provides many of the same basic Ethernet switching capabilities while adding configuration, monitoring, and security features.
An important point is that many managed switches can still work immediately using their default settings. You do not necessarily need to configure advanced features when you first install one.
You can initially use the device much like a basic switch and begin configuring management features later as your network becomes more advanced.
| Feature | Plug-and-Play Switch | Managed Switch |
|---|---|---|
| Initial Setup | Very simple | Can often work with default settings |
| VLAN Support | No | Yes |
| QoS Controls | Limited or unavailable | Yes |
| Port Monitoring | No | Yes |
| Network Segmentation | Limited | Yes |
| PoE Management | Basic on supported models | Advanced controls on supported models |
| Cost | Generally lower | Generally higher |
| Learning Curve | Minimal | Higher when advanced features are used |
| Growth Potential | Limited | High |
One of the biggest reasons to consider a managed switch is VLAN support. A VLAN allows you to logically separate groups of devices even though they may be connected to the same physical network infrastructure.
For example, you may want to separate devices such as:
Separating certain devices can provide additional control over how different parts of your network communicate. This becomes increasingly useful as the number of smart and IoT devices in a home grows.
A managed switch provides several advantages for a growing home network.
Managed switches are not necessarily the best choice for every network. Their additional capabilities can also introduce additional complexity.
If your only goal is adding a few Ethernet ports, a plug-and-play switch can be perfectly adequate. It is inexpensive, simple, and requires virtually no maintenance.
For users who expect their home network to grow, however, the video recommends considering a managed switch.
The advantage is flexibility. You can install the switch and initially use it with its default settings. Later, if you decide to create VLANs, configure QoS, isolate devices, monitor ports, or manage PoE equipment, those capabilities are already available.
A plug-and-play network switch is an excellent solution when you simply need additional Ethernet ports without additional settings or complexity.
A managed switch offers a longer path for growth. It can perform the same basic job today while giving you access to VLANs, QoS, port isolation, monitoring, PoE management, and other advanced networking features in the future.
For a home network that may become more sophisticated over time, having those options available can make a managed switch the more flexible long-term purchase.
One of the best ways to upgrade your wired home network is to add a network switch. In this video, I'll explain what a switch is and how it works. Then we're going to compare a plug-and-play switch to a managed switch.
I'll explain the features, specifications, benefits, and downsides of these devices. At the end, I'll explain which switch I think you should have for your home network.
What exactly is a network switch, and how does it work?
A network switch allows all of your wired devices, such as your desktop computer, TVs, and gaming consoles, to connect to your network at the same time.
Most routers only have a few Ethernet ports. When you run out, you can add a network switch. A network switch gives you a whole row of extra ports for additional devices. And as I like to say, more ports is more better.
Each wired device connects to the switch with an Ethernet cable, and one cable runs from the switch to the router. This gives all of your wired devices access to the internet.
Every wired device has its own ID number, also known as a MAC address. The switch learns the MAC address associated with each connected port and saves that information in its MAC address table, which is also known as a CAM table.
For instance, when your computer sends something to your TV, the switch already knows exactly which port the TV is connected to. It sends the data directly to that port rather than sending it to every device.
When a device such as a TV needs access to the internet, the switch passes the traffic along the cable to the router.
This direct communication helps keep the network efficient. Also, simply adding a switch does not mean you automatically lose speed. Each port operates at the speed supported by the switch and connected equipment, so connecting through a switch can be just as fast as plugging directly into your router.
The advantage is that the switch gives you much more room to grow.
Now let's compare a simple plug-and-play switch to a managed switch.
First, let's talk about the features and specifications of a plug-and-play switch. These types of switches require essentially zero configuration. They use fixed settings and are designed to work right out of the box.
Plug-and-play switches are generally less expensive, use less power, and are often fanless and silent. They are available with or without PoE ports.
There is also no management IP address or interface you need to log into.
The number one benefit of a plug-and-play switch is that it requires almost no effort. You plug it in and you're done. It's so easy a caveman can do it, or your grandma.
There is very little to misconfigure or break. These switches are great when you simply need to add more Ethernet ports.
Plug-and-play switches with PoE ports can also power compatible PoE devices without requiring any additional setup.
They typically have a lower cost per port. In the video, I estimate roughly $3 to $5 per port on a simple 1-gigabit switch.
A plug-and-play switch is ideal for a basic home network or someone who is new to networking.
There are some limitations.
Now let's talk about managed switches, which can include Layer 2 or Layer 3 models.
These switches can often work much like a plug-and-play switch right out of the box. You do not necessarily have to configure anything when you first install one.
You can initially run a managed switch using its default settings and then turn on management features when you're ready.
Depending on the model, configuration can be performed through a web interface, app, or console.
Managed switches can include VLANs, QoS, link aggregation, port mirroring, and many other features. Some models even include fiber connectivity through SFP or SFP+ ports.
Managed switches are also available with or without PoE. PoE models may add power budgeting, individual port control, and scheduling.
First, there is no pressure to immediately configure everything. You can plug the switch in and begin using it, then grow into the advanced features at your own pace.
Second, you can segment your network using VLANs. This means you can isolate devices such as security cameras, thermostats, IoT devices, and guest networks.
Third, you have QoS capabilities that can be used to prioritize traffic.
Fourth, you can see and monitor individual ports.
Fifth, network isolation can provide additional security and control.
Sixth, managed PoE switches can provide smarter PoE controls. You can manage power budgets, remotely reboot certain powered devices such as cameras, or schedule individual ports.
Finally, a managed switch gives you more room to scale as your network grows.
Managed switches have some disadvantages as well.
First, there is a learning curve if you plan to use the advanced features. It can be easy to configure something incorrectly if you jump into features before understanding them.
Second, managed switches are generally more expensive, both in upfront cost and cost per port. In the video, I estimate roughly $5 to $15 per port on a budget managed switch. More advanced switches can cost considerably more.
Third, managed switches can be overkill for a very simple network. If you have a small home or only a few wired devices, you may not need the extra capabilities.
Fourth, an incorrect configuration can break connectivity. For example, a bad VLAN configuration could potentially lock you out of part of your network.
Fifth, some managed switches use cooling fans, which means they can generate some noise.
Finally, there are more features to maintain if you choose to use them. Sometimes less is best, so keep your network as simple as your needs allow.
Now that we've talked about both types of switches, which one should you choose to take your home network to the next level?
My simple answer is a managed switch.
The best part is that a managed switch does not force you to manage anything immediately. Plug it in today and it can work like a basic switch without requiring advanced setup.
When you're ready, however, it unlocks powerful capabilities such as VLANs, QoS, and port isolation. If you have PoE ports, you may also be able to manage those individually.
For me, VLAN capability is one of the biggest reasons to consider a managed switch. You can keep IoT devices and guest devices on a separate VLAN rather than placing everything on your main network.
A plug-and-play switch is perfectly fine if you simply want more Ethernet ports and do not want additional settings.
What makes a managed switch attractive is that it can still work much like a plug-and-play switch when you first install it. You get a switch that works today with minimal setup, while keeping the door open to features such as VLANs, QoS, port isolation, monitoring, and advanced PoE controls.
You're not necessarily committing yourself to additional complexity. You're buying yourself the option to use those features later.
As promised earlier, I've included my favorite managed network switch and my favorite plug-and-play switch in the video description.
If I had to choose between the two, I'm going with the managed switch.
I'm Michael Scott. Thanks for watching, and happy networking.
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