Traditional wide-area networks (WANs) have long relied on connectivity methods such as multiprotocol label switching (MPLS) to facilitate data movement across networks. However, these methods are often costly and may not deliver the desired performance. The rise of cloud computing has spurred interest in software-defined wide-area networks (SD-WAN), offering enterprises a more flexible and efficient solution. In this article, we’ll explore the key considerations and steps involved in planning for an effective SD-WAN setup.

Understanding Network Requirements

Before diving into SD-WAN deployment, enterprises must thoroughly plan and design their network architecture. Key considerations include:

Network Topology: The physical and logical arrangement of nodes and connections significantly impacts network utility. Properly understanding how traffic flows through the network is essential for efficient placement of SD-WAN gateways.
Bandwidth: Determine the required bandwidth based on your business needs. Scalability is crucial – ensure that your SD-WAN solution is appropriately sized to accommodate network traffic.
Application Traffic Patterns: Recognize that different applications have varying requirements for latency, bandwidth, and security. Tailor your SD-WAN architecture to meet these specific needs. Consider features such as Load Balancing or Bonding and QoS.

Security Measures

Security is paramount in any network infrastructure. Ensure the confidentiality, integrity, and availability of your business network by thoroughly evaluating the security features of your chosen SD-WAN solution. Note that some solutions offer additional security with add-on licenses.

Utilize the advanced firewall capabilities that fall in line with your business’s security policies and industry best practices. Seamless integration with existing security infrastructure is important to maintain a consistent level of security across the network. If you need to keep using an existing firewall while implementing new hardware for SD-WAN capabilities, consider using a feature called Drop-In Mode. This is available with Digi and Peplink hardware and would allow you to make use of Failover and Bonding features.

Deployment Models

Consider how your SD-WAN will be deployed based on your business needs.

On-Premises Deployment: Ideal for enterprises with multiple physical locations like branch offices, allowing for in-house management of on-site equipment.
Cloud-Based Deployment: Suited for organizations with remote employees, eliminating the need for on-premises equipment and providing secure access for remote users.
Hybrid SD-WAN: An optimal solution for businesses supporting both branches and remote employees, combining physical devices at office locations with cloud-based access for remote users.

Feature Implementation

Implement QoS policies to prioritize critical network traffic and ensure a seamless user experience. You can prioritize certain devices, and even applications, as needed by controlling how much bandwidth is provided to each. Additionally, utilize Load Balancing to split LAN connections across different WAN services, which can help alleviate the load on one connection at a time. Or, combine WAN services via Bonding for better performance and uptime.

Testing and Validation

Before implementing SD-WAN in a production environment, run thorough testing and simulations. Conducting real-world testing to simulate network conditions ensures the solution can handle peak traffic loads and diverse application and user types. Testing failover and redundancy mechanisms help maintain network connectivity in case of device or link failures. Some products provide tools for testing network performance, which is typically available via the webUI or a cloud management service.

Continuous Monitoring and Optimization

Admins can ensure optimal network performance by regularly monitoring network efficiency and making informed decisions for improvement. Cloud managers can assist by supporting automated alerts for critical performance thresholds. This allows admins to act quickly as issues arise. Start by establishing performance baselines to benchmark network performance, which can help identify deviations that require attention. Overall, ensure that you have visibility into all parts of the network, including WAN, LAN, and cloud deployments.

Looking for a SD-WAN Solution? Contact 5Gstore.com!

5Gstore.com has solutions available for any use case. From your home office, to a large enterprise, look no further. We have solutions available from Cradlepoint, Digi, Inseego, Peplink, and Sierra Wireless. Our team of experts are available to assist you Monday thru Friday 9am to 6pm CT at 833-547-8673. You may also reach out to sales@5gstore.com and we will follow up with you ASAP.