FREQUENTLY ASKED QUESTIONS ABOUT SD-WAN TECHNOLOGY
SD-WAN utilizes a centralized management function to route traffic safely and intelligently through the WAN. SD-WAN securely connects users to any application, both in the data center and in the cloud, across all WAN transport services, including broadband Internet services.
SD-WAN vs MPLS works similarly to switches and routers sitting between levels 2 and 3. (MPLS is sometimes considered a Layer 2.5.) Packet forwarding technology and labels are used to make data transmission decisions. The label is inserted between Layer 2 (data connection) and Layer 3 (network) headers.
SD-WAN is an acronym for Software Defined Wide Area Network (WAN).
Software Defined Wide Area Network (SD-WAN or SDWAN) is a special application of Software Defined Network (SDN) technology used for WAN connections such as Broadband Internet, 4G, LTE, or MPLS. It connects corporate networks, including branches and data centers, over long geographic distances.
SD-WAN edge routers must rely on a predictive service, such as MPLS, to handle latency-sensitive traffic. The router may transfer traffic to an alternate service if MPLS is not available, but this is not recommended. SD-WAN routers still require MPLS and have a limited impact on overall network cost.
With SD-WAN, the network becomes smaller, allowing for better reporting and application security. Comparing SD-WAN and VPN on the Internet, SD-WAN is much more comprehensive. SD-WAN technology has the ability to enable key Internet VPNs and interrupt global MPLS and VPLS networks.
Most SD-WAN implementations offer a way to encrypt enterprise traffic from one branch to another using IPsec, which protects the data being transmitted. Since most SD-WAN providers offer IPsec, it is common to assume that SD-WAN is inherently secure. True, IPsec handles protect data as it traverses the network.
SD-WAN utilizes a centralized management function to route traffic safely and intelligently through the WAN. This improves application performance, resulting in increased user experience, increased business productivity and reduced IT costs. Traditional WANs based on traditional routers are not cloud friendly.