Network Devices – Comprehensive IT Infrastructure Solutions for Business
An efficient network infrastructure is the foundation of every modern company. Network devices enable communication and data transfer between end devices within the same or different networks, and their role is to manage data traffic and ensure security within the network.
Network devices are divided into active devices, which require power and process signals, and passive devices, which are inactive and support the cabling structure. In Senetic's offer, you will find professional equipment from leading manufacturers – from switches and routers to access points, firewalls, and SFP modules.
This guide is dedicated to business owners, IT administrators, and those responsible for network infrastructure. Its aim is to assist in selecting the appropriate networking solution for your company, regardless of the scale of operations, taking into account the dependencies between individual network devices that work together within the entire infrastructure.
What are network devices used for?
Access points, switches, and routers are key elements that enable the smooth functioning of a computer network in a company. Their task is to ensure reliable data transmission and stable connections – both in wired and wireless networks. Access points play a particularly important role, allowing devices such as laptops, smartphones, or tablets to access the wireless network. Switches are responsible for effectively managing traffic within the network, while routers enable communication between different segments of the network. By appropriately selecting these devices, companies can ensure an efficient and secure infrastructure tailored to their individual needs.
Types of Network Devices
Network Management and Control Equipment
- Managed and unmanaged switches are the foundation of any LAN network. Network switches, also known as switches, connect devices within one network – computers, laptops, printers, or other devices, and their task is to forward frames, manage data traffic, and ensure security and performance within the network. Switches can be divided into two main categories:
- Unmanaged – easy to use, designed for small offices and mainly for home use.
- Managed – offer configuration and customization options for network settings, allow the creation of virtual local area networks (VLANs), which enables better traffic management within the network and broad support for various standards and protocols.
- Router connects different networks and directs data traffic between them, deciding on the best route for data packets. In a corporate environment, routers handle WAN connections, link redundancy, and security functions.
- Network controllers provide centralized management of wireless infrastructure, configuration automation, and real-time monitoring.
Network Security and Monitoring
- Firewall monitors and controls network traffic based on defined security rules, protecting the local network from unauthorized access. Modern firewalls offer additional features: application filters, malware protection, and integration with IDS/IPS systems.
- Intrusion Detection Systems (IDS/IPS) analyze network traffic for anomalies and potential threats. IDS detects suspicious activity, while IPS actively blocks attacks.
Wireless and Access Infrastructure
- Access point is a device whose task is to distribute the WiFi signal, allowing wireless access to the wired network to which it is connected. The access point can serve as a gateway to the internet, providing fast and stable connections for various devices. Access points are useful for creating a wireless network over a large area – multi-storey buildings, offices, or shopping centres, where the router's range may be insufficient. By using a suitably selected access point, you will achieve a stable connection in various conditions and locations.
- Powerline networks use the electrical installation for data transmission – useful in buildings where running structured cabling is difficult. In such cases, it is essential to use appropriate cables or connections, especially in environments with increased requirements for resistance to external conditions.
- Cellular network equipment includes 5G devices, base stations, and CPE for private mobile networks.
Network Components and Accessories
- SFP/SFP+ modules (Small Form-factor Pluggable) provide broad support for various standards and protocols, enabling flexible integration with many types of devices and applications in the network core and inter-building connections.
- Network cables – from Cat5e twisted pair to Cat6a and fibre optics – provide physical signal transmission. Proper cabling is essential for reliable data transmission and power supply, especially in the case of PoE technology and the installation of outdoor devices, where weather-resistant cables are required. The choice of cable category affects the maximum bandwidth and range.
- Power over Ethernet (PoE) is a technology for powering devices via Ethernet cable. PoE offers various output power levels, allowing for the wireless powering of access points, IP cameras, or VoIP phones from a separate source.
Wi-Fi 5 GHz in Modern Business Networks
The Wi-Fi standard enables fast and convenient wireless connections in the office, eliminating the need for cabling. Modern business networks increasingly utilise the 5 GHz frequency. With fewer interferences and greater bandwidth, 5 GHz Wi-Fi networks allow companies to provide reliable connections even in environments with a high density of devices. This solution is ideal for modern offices where fast data transfer and network stability are crucial for daily operations.
Leading Network Device Manufacturers in Senetic's Offer
- Cisco is the global standard in networking solutions. Catalyst switches, ISR routers, and Meraki systems with cloud management are used in companies of all sizes.
- HPE specializes in intelligent access points with AI technology and ArubaOS-CX switches for modern data centres.
- Ubiquiti offers the UniFi ecosystem, combining access points, switches, and routers in one management interface – an ideal solution for medium-sized businesses and enterprise clients seeking flexibility at controlled costs.
- MikroTik with RouterOS provides advanced configuration capabilities at a competitive price – the choice of administrators needing full control over the network.
- Fortinet FortiGate offers firewalls with the best security ratings, combining NGFW, IPS, and SD-WAN functions.
- TP-Link is a well-known manufacturer of networking equipment, offering a wide range of solutions for businesses. Their offer includes access points, switches, and routers that guarantee stable connections and high network performance.
In Senetic's offer, you will also find products from Netgear, Huawei, D-Link, PLANET, and OEM by Sasnec as well as many others.
Optimising the Company Network
To ensure maximum performance and reliability of the company network, it is worth implementing proven optimisation strategies. Key elements include:
- selecting appropriate devices, such as access points and switches, that meet the requirements of the network,
- proper configuration, appropriate traffic segmentation, and ensuring stable connections for all users,
- regular monitoring of network performance and software updates, which allow for quick responses to potential issues and maintain high service quality.
Thanks to these actions, the network operates smoothly, and the company can focus on achieving its business goals.
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FAQ - Frequently Asked Questions
What is the difference between a managed and an unmanaged switch?
An unmanaged switch is primarily intended for home or small office use – it operates automatically without configuration. A managed switch allows for support of various standards, port configuration, SNMP monitoring, and better management of network traffic.
What is PoE and which devices can be powered over the network?
PoE, or Power over Ethernet, allows for powering access points, IP cameras, VoIP phones, and IoT devices using Ethernet cables. The appropriate output power is important as it affects the stability and range of powered devices, especially with longer cables or in challenging external conditions.
How to choose a firewall based on the size of the company?
Key parameters include throughput, the number of simultaneous sessions, and required security features.
What is the difference between an access point and a router?
A router connects networks and directs traffic between them, while an access point extends the range of the wireless network and allows internet access on devices such as laptops, smartphones, or tablets. Many network devices operate in different modes, allowing for flexible adaptation of functionality to needs and space.
What is an SFP module and when is it needed?
SFP modules are used for fibre optic connections over long distances or when high bandwidth requirements are needed.
What network bandwidth is sufficient for a company?
It depends on the number of users and applications – the standard is 1 Gb/s per workstation, 10 Gb/s for servers.
What is a VLAN and what is it used for in a company network?
A VLAN (Virtual LAN) is a virtual local area network that separates traffic between departments, increasing security and performance. Ports on switches can be assigned to different VLANs, which reduces collision domains and facilitates management.