Wireless Network Controller – Central Management of WLAN Infrastructure
The wireless network controller enables central management of access points in the corporate WLAN network. It automates deployment, configuration, power settings, and security processes, allowing IT administrators to manage the entire network from a single location. It facilitates the implementation of security policies, optimises roaming, and monitors performance in real-time. It also provides control over data flow and protects the network from intrusions.
Senetic offers WLAN controllers tailored for small offices and environments requiring a high level of security. In large installations, central management is essential for effective control, monitoring, and protection of the network. This guide will help you choose the right solution.
What is a wireless network controller?
A WLAN controller (Wireless LAN Controller) is a device that monitors and secures access points. In the early development of WLANs, these functions were performed by standalone access points, which worked well in small networks. As the number of access points increased, the need for central management arose, leading to the development of wireless network controllers. The centralised model, where the controller manages the access points, is popular in large installations, enabling quick responses to threats and disruptions.
The controller allows for central management of the infrastructure, automatically distributing configuration changes to all access points and controlling data flow and security without the need for manual configuration of each device. Choosing the right controller can optimise network management.
Benefits of using a WLAN controller
- Simplified administration — centralised management allows for automatic configuration and changes to settings across all access points, managing data traffic and controlling access based on, among other things, the requested application.
- Increased security — consistent security policies protect against data leaks and unauthorised access, meeting industry requirements.
- Optimised performance — automatic directing of clients to less congested access points improves network efficiency.
Controllers are available in various licensing options that allow for infrastructure expansion and network scaling.
Over time, distributed architecture has gained importance, as concentrating all functions in one device created a risk of network failure. Currently, virtual and cloud models are available, allowing for flexible adaptation to needs.
Choosing a controller suitable for the scale of the network
The choice of controller affects the stability and performance of the WLAN. In large organisations, offices, or hotels, where the number of APs exceeds several units, centralised management is necessary for effective control, security, and ease of maintenance. The controller monitors data flow and network traffic, enabling quick responses to incidents.
Networks with up to 100 Access Points
SMB-class controllers offer basic management and security features. Equipped with Gigabit Ethernet ports and SFP modules, they are suitable for locations with moderate traffic. Adding new access points is quick and automatic, and infrastructure expansion is possible through licensing.
Networks with over 500 Access Points
Enterprise controllers support even thousands of access points, offering 10GbE ports, link aggregation, and advanced QoS and monitoring features. They ensure the stability of critical applications such as VoIP or video conferencing.
High Security Requirement Environments
Controllers with security certifications meet the requirements of the public and financial sectors. Features such as DPI (Deep Packet Inspection), IPS (Intrusion Prevention System), and advanced threat analysis ensure compliance with GDPR and HIPAA regulations, as well as the detection of unauthorised access points and wireless connectivity.
Key Technical Parameters of WLAN Controllers
Technical parameters affect the performance and scalability of the network. The controller manages data flow, optimising traffic and securing the network.
Performance and Throughput
The number of supported access points and simultaneous users defines the scale of deployment. The controller monitors performance and automatically adjusts signal strength and channels, minimising interference.
Connectivity and Interfaces
- Gigabit and 10 Gigabit Ethernet ports for traffic aggregation
- SFP/SFP+ modules for fibre connections
- Redundancy options and automatic failover
Management and Monitoring
Central management through web interfaces and CLI (Command Line Interface) simplifies administration. Zero Touch Provisioning (ZTP) technology automates the detection and configuration of access points, speeding up deployment and reducing maintenance costs. The controller enables centralised monitoring and quick responses to threats. Seamless roaming ensures uninterrupted connectivity as users move around.
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Frequently Asked Questions
What is a wireless network controller?
It is a device or software for central management and control of access points, ensuring network security and traffic management based on, among other things, the requested application.
Is a physical controller always needed to manage access points?
No. Hybrid, virtual, and cloud solutions are available that allow for automatic configuration and management without the need for a physical device.
How many access points can one controller support?
It depends on the model and license - from several dozen to several thousand access points.
What is the difference between a local controller and a cloud controller?
A local controller operates within the client's infrastructure, providing local management. A cloud controller allows management over the internet from multiple locations without dedicated hardware.
What security features do modern WLAN controllers offer?
They offer WPA2/WPA3 encryption, 802.1X authentication, detection of unauthorised access points, access segmentation, management frame protection, and monitoring of network traffic.
What is the difference between centralised and distributed management?
In a centralised model, the controller manages all access points and network security. In a distributed model, each operates autonomously, reducing the risk of failure but limiting central control.