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SD WAN vs SDN - The Difference in the Details In the past, enterprises were reluctant to use the Internet as a connection line between the external point and the data center. The main reason is that the application transmission quality is difficult to control, especially applications such as Voice and Video that require instant transmission. The SD-WAN solution needs to be able to have the best transmission quality for the core application of the user in different mechanisms. These mechanisms may include application quality detection, fast retransmissions and corrections, multiple line switching or sharing. Even if there are problems with the line, such as line interruption, delay rise, excessive packet loss ratio, and excessive packet transmission time difference, the SD-WAN solution can still ensure the service quality of key services. Application identification Therefore, SD-WAN devices need to be able to identify different public or enterprise-private applications, such as Video/Voice that requires instant delivery, commercial connections that include credit card transaction information, and low Facebook or Instagram. Importance application. Hierarchical delivery of applications When applications are grouped, managers can centrally configure the routing policies for different types of applications. For example, Voice/Video should be transmitted on a line that meets the demand (low latency, low packet loss). Expensive MPLS lines should be reserved for credit card transactions or VDI transmissions. The connection to YouTube directly gives the lowest transmission priority. and many more. SaaS/Public Cloud Service Support There are quite a few companies in the world that use a large number of SaaS cloud services such as Salesforce, Office 365, and Box, or put some core applications on AWS, Azure, and GCP. At this point, as with the data center, whether external users can connect to these SaaS/Cloud environments in a high-quality, low-risk manner is also an advantage that the SD-WAN solution must be able to provide to the enterprise. Read More; https://www.fieldengineer.com/sd-wan/top-11-telecom-companies |
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