In principle, a switch handles the targeted data transmission between at least two participants within a network. However, when searching for a suitable device, it quickly becomes apparent: There are a number of differences and the choice is not so easy without the appropriate knowledge.
In this blog post, we will therefore provide you with a clear summary of the available variants and the requirements they meet. This will give you an overview of which switch is right for your network.
Each switch assumes the role of the transmitter between the participating hosts of a network. The exchange is targeted so that data packets are only transmitted to the recipient who is supposed to receive them. This makes switches not only more secure, but also faster than hubs, which send all data unfiltered to each host, due to the compressed data transmission.
Switches are therefore the means of choice nowadays for setting up a stable and secure network. How secure and stable this should ultimately be always depends on the area of application. A large company with a widely branched network requires different software and hardware than a home network.
In order to meet all requirements, from small to huge, you will receive switches that differ beyond the basic functions mentioned here.
The Open Systems Interconnection model (OSI model for short) is used in network technology to define in a standardized way how networks should communicate with each other and transfer data. The complex processes are divided into seven layers, each of which performs a specific task. This makes it easier to identify the cause of any problems that occur.
Assignment of switches to OSI layers:
Layer 2 switches can (as the name suggests) be assigned to the second layer of the model, i.e. the data link layer (layer 2). They therefore take on the function of a bridge. Using Mac addresses, they transmit data packets in a targeted manner to the addressed recipient within the local network.
Layer 3 switches can also recognize IP addresses and thus take on additional router functions. They can therefore be assigned to the network layer (layer 3) and also enable global communication. These devices often replace routers, especially in large companies.
In addition to the ability to communicate locally and beyond, the devices also differ depending on the planned network size. As a result, functions, connection and security settings vary. Basically, switch types can be divided into three categories:
If you are looking for a model that can be easily and quickly implemented in your existing network, such a switch could be suitable. These models are often plug-and-play, meaning they can be connected and used immediately. They are easy to operate, which is why you can use them even as a beginner and without prior knowledge - but you also have less control and no management functions.
The answer to the question "Which switch?" could therefore lead you here, unless you want to set up advanced functions.
Summary of the features:
You have full control and configuration options with devices of this type. Managed switches can (or must) be set up individually. This is advantageous if you place high demands on them and want to coordinate a large network in the best possible way. Permanent monitoring of the network is also possible.
The prerequisite for using managed switches is that you have the appropriate specialist knowledge.
Features of a managed switch:
These versions require less administration than managed switches, but offer more functions than unmanaged switches. As they are still changing and constantly evolving, the corresponding features may vary. Basically, you can access your Smart Switch via a web browser. Although not all functions can be used as with a managed switch, these versions can certainly be seen as a cost-reduced alternative.
Smart Switches at a glance:
In addition to the features mentioned above, you should also consider which others are relevant for your work. So ask yourself before buying a network switch:
How many devices do you want to connect?
Pay attention to the number of ports available so that you can really connect all the devices you want. In a home network, four to eight ports are often sufficient; in larger companies, switches with far more LAN connections are used.
How high should the transmission speed be?
Switches can forward data packets at different speeds. Gigabit switches are superior to classic Fast Ethernet switches. These are available with a transmission rate of at least one Gbit/s - on each port.
Which cable should you use to connect to a network switch?
Traditionally, you can connect your devices to the switch using an RJ45 Ethernet cable. The design of the cable also influences the maximum transfer speeds.
The distinction between CAT-5e, CAT-6 or CAT-7 cables is based on the speed of data transmission, but also the bandwidth (in MHz).
In principle, all versions - including CAT-5e (100 MHz) - are suitable for the gigabit range. In large-scale applications and in professional environments, however, CAT-6 or CAT-7 cables are more frequently used, which can transmit far more data simultaneously at up to 250 MHz or up to 600 MHz. But the future trend in the private sector is also clearly moving towards cables with higher bandwidths - CAT 6 cables are already standard in home networks today.
Private users are usually adequately served with an unmanaged switch. If very high security requirements are relevant - for example in the corporate environment and in data centers - a managed switch should be your choice. Medium-sized networks are well covered with a Smart Managed Switch.
Of course, you also have the option of choosing between different manufacturers. However, this is often more a question of taste, as there are really many good brands. You can also find some of them in our range, including Cisco, HPE Aruba, Fortinet, SonicWall and Juniper.
If you are unsure which switch is the right one for your application, please contact us. We will be happy to advise you in detail and help you find the hardware that will support you in setting up a secure network. You can also choose between new or refurbished equipment.
