Software defined networking (SDN) has become a big deal in the world of networking and communication. Essentially, it is a way for businesses and IT managers to have more control and flexibility over their networks. However, exactly how does it help businesses? This article will provide an overview of this remarkable technology and the current industry trends that are specifically contributing to the growing adoption of SDN in the realm of IT infrastructure deployment.
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What is Software Defined Networking?
Software defined networking, or SDN, is an approach to networking that utilizes software-based controllers or APIs (application programming interfaces) to communicate with underlying hardware infrastructure and explicit traffic on a network.
SDN separates the control plane from the forwarding plane, allowing for centralized control and programmability of the network. This architecture decouples network control and forwarding functions, making the network more dynamic, manageable, cost-effective, and adaptable. SDN enables operators to manage the entire network consistently and holistically, regardless of the underlying network technology. It provides better network connectivity, faster deployment of applications, improved security, and better control with high speed.
With its remarkable performance, SDN is increasingly gaining popularity in the networking and communication sectors. According to Extrapolate's latest report, the global software defined networking market is experiencing significant growth and is likely to reach USD 32.7 billion by 2028 at a compound annual growth rate (CAGR) of 19.4%.
Types of Software Defined Networking
There are several types of SDN implementations. Its main types include:
- Open SDN: Open SDN employs open protocols, such as OpenFlow, to control the virtual and physical devices responsible for routing data packets.
- SDN via APIs: In this type of SDN, application programming interfaces (APIs) are used to control how data moves through the network on each device.
- SDN via Hypervisor-based Overlay Network: This implementation creates a virtual network on top of an existing hardware infrastructure. It uses dynamic tunnels to connect different on-premise and remote data centers.
- Hybrid SDN: Hybrid SDN combines traditional networking with SDN in one network. It supports different types of functions on a network and can be used as an incremental approach to SDN.
Pros of Software Defined Networking for Businesses
SDN offers several benefits to businesses, including:
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Cost Reduction
SDN does not require a significant investment, and there are even free SDN products available. It helps reduce overall capital expenses (CAPEX) and operating expenses (OPEX) by modeling the physical networking environment into the software.
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Flexibility and Agility
SDN allows for faster updates and changes to the network, making it more flexible and adaptable to evolving business needs.
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Reduced Errors and Downtime
Automation in SDN reduces the chances of human errors, leading to fewer network errors and downtime.
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Improved Network Visibility
Software defined networking provides network administrators with a comprehensive view of the network topology, making it easier to monitor and manage network resources.
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Simplified Network Management
SDN offers a single management console with better visibility into network resources, simplifying network planning and configuration.
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Enhanced Security
SDN enables virtualized security functions, allowing greater visibility, scalability, and control. It offers a software-defined approach to network security, making it easier to manage and enforce security policies.
3 Latest Software Defined Networking Trends in 2024
Below are three trends in SDN that are all set to shape the landscape in 2024:
1. Adoption of SDN in IoT
According to the Worldwide Internet of Things Spending Guide, European organizations invested $227 billion in IoT technology in 2023, with projections indicating a rise to nearly $345 billion by 2027. As IoT technology evolves, SDN is crucial for optimal connectivity and data transfer. SDN offers flexibility, latency, and security solutions, making it ideal for the IoT movement.
Software defined networking enables the establishment of private virtual networks, allowing IoT devices to be segregated from the rest of the network. SDN also allows for highly flexible deployment of cybersecurity solutions, such as firewalls and anti-DDoS. The concept of IoT is time-sensitive, and SDN infrastructure offers advantages in terms of security and latency over traditional networks, making it suitable for IoT deployments.
2. Introduction to 5G
5G is prevalent in mobile telecommunications infrastructure, offering fast, reliable connectivity and low latency for connecting large appliances. It supports telecom operators in implementing top-notch mobile broadband networks, enabling intelligent deployment of industry applications and industry 4.0 benefits. SDN and NFV technologies are at the core of emerging network architectures for 5G. Private 5G networks are gaining pace worldwide, driven by SDN technology, which accelerates flexibility and manageability.
In this field, Infosys offers various software defined networking and 5G services, highlighting their impact on network innovation. It provides a wide range of networking solutions, like 5G RF planning and design services, smart network assurance, and slice management, empowering enterprises to adopt these technologies.
3. SDN for Network Security
Enterprise IT departments are struggling with ransomware and phishing threats, leading to a need for network security solutions. SDN offers options like SaaS- and virtual-based web application firewalls (WAFs) and secure web gateways (SWGs). Additionally, SDN security is expected to drive the adoption of zero-trust network access, which focuses on verifying and authenticating every user and device attempting to access the network.
For example, Perimeter 81, an Israeli cloud-based network security company, offers a unified Zero Trust Network as a Service (ZTNaS) platform. Its solution includes Zero Trust Application Access, Zero Trust Network Access, and Software-Defined Perimeter to ensure secure access to web applications, on-premises and cloud resources, and concealment of internal network resources.
Wrapping it Up
Software defined networking has emerged as a transformative technology in the networking industry. Its ability to centralize network control, enhance automation, and provide flexibility has revolutionized network management and operations. SDN enables organizations to adapt to changing business requirements, improve scalability, and optimize resource utilization. With the rise of IoT technology, the deployment of 5G networks, and the increasing focus on network security, the relevance of SDN is expected to grow even further. As SDN continues to evolve, it holds the potential to reshape how networks are designed, managed, and secured, paving the way for a more agile and efficient future in networking.
