In two previous articles, we discussed why interest in BNG and RADIUS-based provisioning is growing and what makes COS’s solution unique. In this article, we will take a deeper look at the key factors to consider when selecting a RADIUS solution.
When implementing a BNG in your network, you will need to decide on a RADIUS solution and how to set up the database. This decision is far from straightforward and can be complex, which is why we want to provide guidance here.
At COS, we have encountered several different methods for implementing RADIUS provisioning. Since this solution plays a crucial role in network reliability, it is well worth investing time in making an informed decision. Naturally, your specific circumstances will determine which solution best fits your network, but below are our general recommendations.
The following solutions are based on FreeRADIUS and PostgreSQL but are similar for MariaDB/MySQL.
Three RADIUS Authentication & Authorization Solutions with FreeRADIUS
Option 1: The Simplest Setup – No Redundancy
- 1 VM (Virtual Machine) with FreeRADIUS
- 1 VM with the database, with automatic backup/export
Since virtual servers are used, it is easy to perform backup/restore/replication, create snapshots before updates, and similar tasks. In this scenario, the underlying virtualization platform (e.g., VMware) minimizes downtime compared to physical machines. This setup is straightforward and works well for less critical implementations and lab environments.
Option 2: Redundancy via Replication
- 2 VMs with FreeRADIUS
- 2 VMs for the database (1 primary, 1 secondary/standby)
FreeRADIUS must be configured to recognize both databases (primary and secondary) so that it automatically switches to the secondary if the primary stops responding. To promote the secondary database to primary automatically, additional configuration and usually an extra VM (quorum) are required. Otherwise, this must be done manually. This setup is a good balance between complexity and reliability.
Option 3: Redundancy via Clustering
- 2 VMs with FreeRADIUS
- 2 VMs with the database in cluster mode, either active-passive (the passive takes over if the active fails) or active-active (both share the load)
The clustering setup is significantly more advanced than the replication approach in Option 2 but enables even higher uptime. The two RADIUS servers connect to an IP address representing the cluster. In active-active mode, both database VMs are operational simultaneously, sharing the load. Failover occurs automatically without manual intervention. However, this is the most complex setup and requires advanced database expertise for monitoring and maintenance. It is best suited for large operators with the highest availability requirements and in-house expertise to manage this setup.
RADIUS Accounting
Collecting RADIUS Accounting data—detailed statistics and usage information—can be demanding and should be handled by a separate RADIUS server with its own database. The redundancy options described above focus on managing Authentication and Authorization functions.
COS Systems: Helping You Choose the Right RADIUS Solution
At COS, we have built expertise in collaboration with our partners and are happy to guide you in selecting the right RADIUS and BNG solution. Our philosophy is pragmatic: “Don’t let the perfect be the enemy of the good.” The most complex solution is not always the best choice; instead, the ability to manage the solution over time should be the deciding factor. At the same time, technology is constantly evolving, and it is essential to take advantage of innovations and advancements. We stay up to date with these developments and are happy to help you make the right decision.
More from COS Systems
In our next article, we will take a broader perspective and present COS Business Engine – our complete solution for municipal network operations.
Stay tuned and read more about our solutions here!
Säkra upp ditt nätverk och modernisera din provisionering med RADIUS och BNG
Effektivare BNG- och RADIUS-provisionering med COS Systems
Att tänka på när man designar sin RADIUS-lösning
Optimera driften av ditt öppna stadsnät med COS Business Engine
Choosing the Right RADIUS Solution for Your Network
More Efficient BNG and RADIUS Provisioning with COS Systems
Secure your network and modernize your provisioning with RADIUS and BNG
Press Release – COS Systems and Calix Expand PON Networks in the Nordics
COS Systems and Calix Expand PON Networks in the Nordics
The Nordics have long been at the forefront of fibre rollouts, and while Active Ethernet has historically dominated the region, the global shift towards PON (Passive Optical Network) technology is gaining momentum. As a market leader in FTTH solutions across North America, Calix is now introducing its innovative PON solutions to the Nordics in collaboration with COS Systems, enabling operators to seamlessly modernise and scale their networks.
“The Nordics have always led the way in broadband innovation, and we’re excited to bring our cutting-edge PON technology to Sweden and beyond. Together with COS Systems, we are making it easier than ever for operators to deploy smarter, more sustainable fibre networks,” says Patricia Öien Ingemarsson, Sales Manager Nordics at Calix.
Why Calix PON?
Active Ethernet networks provide a dedicated fibre connection to each user, ensuring consistent bandwidth and high performance. However, they require energy-intensive switches distributed throughout the network footprint. PON, on the other hand, utilises a shared fibre infrastructure with optical splitters (mirrors) to distribute signals, making it more cost-efficient and less vulnerable.
While traditional concerns around PON have centred on potential bandwidth contention, advancements from industry leaders such as Calix now enable multi-gigabit speeds on XGS – PON, 50G Pon and beyond. Compared to Active Ethernet, PON technology from Calix delivers several key advantages:
A Seamless Transition with COS Systems and Calix
With a long-standing global partnership, Calix and COS Systems provide a fully integrated solution to support network owners and operators. COS Systems offers a comprehensive broadband management platform (BSS/OSS), ensuring a smooth, automated migration to PON.
The deep integration between COS Systems & SMx SDN Controller – an advanced network Manager with a REST based API and NetConfYANG configuration model enables:
With this integration, operators benefit from a scalable, automated solution that maximises efficiency, minimises downtime, and provides unparalleled flexibility.
“Our collaboration with Calix has been incredibly successful, and we’re thrilled to expand it further. By integrating our solutions, we empower operators with a seamless transition to PON, optimising everything from service activation to troubleshooting,” says Mikael Philipsson, CEO of COS Systems.
About Calix
With a 25-year legacy of empowering broadband service providers, Calix delivers an end-to-endbroadband platform—from the access edge to in-home Wi-Fi networks. Our solutions integratehardware, software, and cloud-based analytics while upholding the highest standards for energy efficiency and sustainability under the EU Code of Conduct. With over 1,600 customers worldwide, including more than 600 providers operating 10G XGS-PON networks, Calix continues to transform broadband across North America and beyond.
About COS Systems
COS Systems delivers cloud-hosted software to plan, build, and manage broadband networks worldwide. Our flagship platform, COS Business Engine, is a proven BSS/OSS solution that supports both traditional ISPs and Open Access networks. COS FSM optimises scheduling, dispatching, and task management for a more efficient and integrated workflow. With an end-to-end approach, our solutions enable self-service management, digital sales, and marketing through an intuitive online marketplace. Designed for ease of use, COS Business Engine enhances both the customer and employee experience—driving higher take-up rates and maximising revenue.
Watch the demo!
Meet the latest addition to our team – Regian Landström
Tell us a little about yourself – who are you, and what is your background?
I’m Regian, an energetic and outgoing IT enthusiast with a strong background in programming. I’ve worked in IT support for around four years, gaining experience in both telecom and factory environments. My passion for technology started early—I’ve been developing applications and small games since I was about 10 years old. IT has always been a big part of my life, and I love learning and exploring new challenges in the field.
What caught your interest in COS Systems?
I was looking for a place where I could grow both personally and professionally, and I truly believe COS Systems is the perfect environment for that. The job posting immediately caught my attention—it sounded like an exciting and challenging role. But what really sealed the deal for me was meeting the team during my interview. Their energy and passion made it clear that this was a place I wanted to be.
What are your goals for the coming months?
My main goal is to build a strong foundation of knowledge so I can dive deeper into my role as quickly as possible. I believe that having a solid base makes it much easier to expand and develop expertise over time. The sooner I get up to speed, the sooner I can contribute in a meaningful way.
Why should people contact you and press the “connect with Regian” button?
I believe that strong teams are built on connection and collaboration. Whether it’s bouncing ideas off each other, solving challenges together, or just having a casual chat, staying connected fosters trust and understanding. Even a simple Slack message can go a long way in strengthening teamwork, and I’m always happy to connect!
Tell us a fun fact about yourself.
I am Sámi from my dads side.
Broadband Mystery Tour
Solve the Secrets of Connectivity!
The Mystery Unfolds
Step into the shoes of a broadband detective for an immersive adventure where you’ll unravel real-world connectivity challenges. Work alongside industry leaders to crack the code of successful broadband deployments – no powerpoints, no lectures, no sales pitches just hands-on problem-solving that gets results.
The Broadband Mystery Tour is an interactive, problem-solving roadshow designed to demystify broadband deployment through a fun and engaging Scooby-Doo-style mystery experience. Instead of presentations, we focus on conversations, collaboration, and hands-on challenges to help communities and industry leaders uncover the key to successful broadband expansion.
Guided by the Mystery Gang—a powerhouse team of broadband experts and sponsors including Bonfire, Vetro, COS, Ocius-X, Nokia, and Hexatronic—attendees will step into the role of Broadband Detectives to solve real-world connectivity challenges across four key phases: Planning, Design, Construction, and Operations.
From cracking the case of missing business plans to unraveling network design puzzles and solving construction bottlenecks, this immersive event equips attendees with the knowledge and confidence to build sustainable, high-performance broadband networks.
Join us on the Broadband Mystery Tour—where we solve the clues, connect the unconnected, and bring communities online!
Are you ready to crack the broadband code?
Is This Adventure Right for You?
✓ Community Leaders: Learn how to champion broadband initiatives
✓ ISP Professionals: Master next-gen network deployment strategies
✓ Network Engineers: Get hands-on with cutting-edge solutions
✓ Tech Leaders: Understand the future of connectivity
✓ Policy Makers: Discover what makes broadband projects succeed