SDWAN

SD WAN Summary

128T Concept

Vector

• It is Secure Vector Routing(SVR) which is from 128T. Instead of cost, 128T incorporates an innovative technique known as vectors.
• Vectors are a per-service policy attribute that assigns costs to segments to allow shared infrastructure to be used uniquely based on the type of traffic traversing it.
• The most common use case for configuring vectors is a system with connectivity to two Internet Service Providers(ISPs), where one ISP is preferred for a specific category of traffic and the other ISP is preffered for everything else.
• Traffic will always seek to find the path with the lowest(numerical) value for cost/priority.

The vector configuration process includes the following steps:

1. Assign neighborhoods and vectors to all relevant egress interfaces.
2. Apply preference values to vectors in one or more service-policy elements.
3. Apply the service-policy to the services to use these specific paths.

 

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written in 2020.4.6

https://hayleyshim.github.io/blog/sdwan