Software Defined Networking (SDN)
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What is Software Defined Networking
Software Defined Networking abstracts network management away from the physical machines that control the network and introduces a control layer that centrally manages the entire network using open APIs. This differs from traditional networks, which are managed via software that is inextricably linked to the hardware itself. Software defined networking is most often used by larger organizations that have complex networks to manage.
Traditionally, a given router or switch can only “see” machines that are connected directly to it. In contrast, software defined networking enables network administrators to easily monitor network traffic and conditions and make changes to the network when needed.
Software Defined Networking Features
SDN solutions should have most or all of the following features:
- DDoS Protection (DDoS)
- Global Load Balancing
- Web Application Firewall (WAF)
- Content Delivery (CDN)
- Transport Layer Security (TLS)
- VPN
- Connection Bonding
Software Defined Networking Comparison
Consider these factors when comparing SDN solutions:
- Existing vs. From-Scratch Networking: Consider whether your use case is layering SDN on top of existing hardware-based networking, or if you’re looking for a SDN solution to meet your network needs from the ground up. Solutions will vary in how well they serve each of these use cases.
- Vendor-Specific Solutions: Some solutions, particularly leading enterprise-focused solutions, are optimized to integrate with the vendor’s other networking solutions. Consider if your business has already invested in a particular vendor for networking needs, as there may be more efficiencies from staying within a single vendor’s ecosystem.
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Pricing Information
Given the complexities of setting up a network, explicit pricing information for Software Defined Networking is rarely available without first contacting the vendor for details. Pricing will range depending on the size of your network, how busy the network is, and how much hardware will be needed to get the network up and running.