SD-WAN is a dynamic technology solution that can cater to a variety of needs. Enterprises often find themselves spoil for choices when trying to zero down on a deployment strategy that is closely aligned with their resiliency objectives.
The ideal SD-WAN architecture deployment depends largely on the nature, scale and complexity of an organization’s business operations. The mission criticality of applications and their data volumes are other influencing factors.
Location Specific Deployment
An SD-WAN device is installed at each location. This appliance provides connectivity to the company’s other locations but not to a cloud gateway.
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Such an SD-WAN deployment is typically suited for organizations where all the applications are hosted locally without any cloud based support. In such a scenario, an SD-WAN solution with cloud enabled features would only imply additional costs. Many organizations use a combination of MPLS and Internet connections. A relatively small MPLS network is used for applications that need to work in real time such as voice, video conferencing and virtual desktop. The internet connections are used for less critical applications.
Advantages:
- Negligible expenditure on bandwidth for cloud enabled SD-WAN
- Load Balancing
- Traffic Shaping in Real Time
- WAN Application Performance Enhancements
- More robust Disaster Recovery Solutions through resilient connectivity
Cloud Enabled SD-WAN
An SD-WAN device installed on location provides connectivity to a cloud gateway. In addition to the advantages of the earlier architecture, this deployment of SD-WAN also enhances the performance and dependability of cloud based applications.
The cloud gateway is linked directly to a public cloud service, which improves the operational efficiency of the cloud applications. Even if the internet connection goes down, a cloud session can still be kept up and running while the circuit flaps. If a second internet circuit is available, the SD-WAN device can use this circuit to transmit all cloud applications data seamlessly.
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This deployment is ideally suited for business processes that heavily depend on high end cloud applications. SD-WAN splits the traffic between an MPLS network that handles mission critical applications in real time while everything else is transmitted through the Internet.
Advantages
- The Presence of a cloud gateway enhances cloud application delivery as well as dependability
- Load Balancing
- Traffic Shaping in Real time
- Performance enhancements across all WAN applications
- More robust DR Solutions through resilient connectivity
Cloud Enabled SD-WAN Supported by a Backbone Network
SD-WAN capabilities are fortified through this deployment model. An SD-WAN device installed at the local office routes all traffic to the SD-WAN vendor’s private backbone network.
This setup significantly diminishes connectivity hazards such as latency, packet loss and jitter. Application delivery, especially in the case of those that need to operate in real time, is greatly improved. Cloud based applications also see improvements as the SD-WAN vendor’s private backbone network connects directly with public cloud platforms.
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Companies with many mission critical applications that require real time operability that want to do away with their expensive MPLS connections without having to depend entirely on their Internet lines.
- Mission critical application that need to run in real time can fully exploit the private backbone network’s infrastructure
- Cloud application performance and dependability are improved through cloud gateways
- Load Balancing
- Traffic Shaping in real time
- Performance enhancements across all WAN applications
- More robust DR Solutions through resilient connectivity
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