SD WAN Architecture explained
In this article, I will discuss the concept of Software-Defined Wide Area Network (SD WAN) architecture and outline its four key technical components. I will explain whether a managed global SD WAN network is the ideal connectivity solution for your IT business.
What is SD WAN Architecture?
Did you know that SD WAN networks have gained popularity over MPLS? They are growing in popularity due to their rapid deployment capabilities and compatibility with various connectivity infrastructures, including fixed broadband, leased lines, fiber, and mobile data connections. The architecture of SD WAN facilitates quick site deployment and interconnection to any location, application, or cloud platform, making it a flexible and resilient network connectivity solution.
What are the main components of SD WAN?
SD WAN architecture comprises four distinct building blocks: data, control, management, and orchestration.
- Data Block: Handles the actual transmission and reception of data. Network devices execute the instructions provided by the control block.
- Control Block: Manages secure gateways between all network nodes and sends routing and security protocols to the data block devices.
- Management Block: Allows authorized users to monitor and control the entire SD WAN network, collect network statistics, and generate alerts for service and performance issues.
- Orchestration Block: Oversees all automation within the SD WAN network, including provisioning and authentication.
What are the deployment Options for SD WAN Architecture?
Customers can deploy SD WAN architecture in three primary locations:
- On-Premises: Using dedicated networking equipment at their office or data center.
- Cloud: Connecting virtual machines provided by a cloud provider to link physical sites and SD WAN users to a cloud platform.
- Hybrid: Combining cloud deployment with a network backbone, building SD WAN infrastructure both in the cloud and between cloud providers using a private network backbone.
What are the types of SD WAN Architecture Deployments
Customers have multiple options for building and using SD WAN networks:
- Self-Built: Constructing their own SD WAN network with dedicated hardware, maintaining full control.
- Via a managed Services Provider (MSP): Utilizing SD WAN services from an MSP, who builds and manages the network based on customer requirements for a recurring fee.
- Via a Cloud Provider Managed: Leveraging a global network of SD WAN Points of Presence (PoPs) and infrastructure from a cloud provider, enabling rapid deployment and service usage based on demand.
When is SD WAN the right network for your business?
To determine if SD WAN is suitable for your business, consider your overall IT strategy and cloud adoption. If your business operates a centralized IT environment with corporate data, applications, and network security managed from a central data center, SD WAN may not be the best fit. However, if your business uses cloud applications and services and has a decentralized IT structure, your end-users will likely benefit significantly from an SD WAN architecture. Please contact me if you want to learn more about SD WAN, global connectivity and data centers and how I can support your business.