SD-WAN is getting a great deal of air play in the industry right now, promising to solve every network challenge that embattled network architects and operators are experiencing today from insatiable bandwidth requirements and costs through simple network resiliency and management. But what is marketing fluff, and what is real? What are the real drivers behind this latest “transformational” technology, and what problems does it really solve?
More Affordable Network Needed
With increasing workloads and performance requirements, especially with the proliferation of cloud-based applications, the need for predictable, high-speed, secure, and diversified networks is escalating. It simply isn’t always financially feasible to deploy diverse MPLS links to multiple distributed offices.
SD-WAN enables companies to take advantage of less expensive internet access rather than managed private networks while still getting the benefit of the types of capabilities provided by an MPLS network. In many areas, tier one direct internet access actually (and maybe surprisingly) provides lower latency, lower jitter, and lower packet loss than its expensive MPLS counterpart, so companies with a large number of distributed offices can expect to see real cost benefits with an SD-WAN network versus a traditional MPLS network.
Simpler and Faster Deployment
MPLS circuits can take months to provision and turn up. The underlying internet access types that SD-WAN can take advantage of can be faster and easier to deploy. However, don’t be misled by the myth that SD-WAN is simple to deploy. There is still a substantial amount of planning and configuration to be done. Beware of the “plug and play” misconception and investigate how each solution is deployed, as they are all different.
Not all SD-WAN solutions are as easy to manage as you might think, and not all management portals provide the same functionality. Whether you are looking at a service provider-managed solution, your own “book end” managed solution, or are using a dedicated SD-WAN network provider, look carefully at what priorities you can set and what monitoring you can do. Are these to device level (MAC address) or location level (essentially just network aggregation and optimization solutions)?
And, most importantly, don’t forget about how software updates are applied and managed and how template policies are set and administered — the very things you would think about when managing routers in your network.
There are claims made that MPLS is more secure than SD-WAN. In reality, an MPLS network is only as secure as the accuracy of the MPLS provider’s switching. The use of IPSec connectivity and additional service chaining in an SD-WAN environment should be more than sufficient to address most security concerns.
You can’t simply turn to Gartner’s magic quadrant and pick a leader. The industry is too young, with many new market entrants. Whatever deployment method you are going to use, be sure to check the underlying equipment vendor’s track record. Financial stability and investors are important. Ask for references and don’t forget to look under the hood at the vendor roadmap to understand future solution enhancements such as scalability.
MicroCorp was a pioneer when MPLS came along. We have over 30 years of experience delivering complex network solutions and helping businesses discover the right technology for their operations. Contact us to learn more about a partnership in adding SD-WAN and related technologies to your portfolio of solutions.