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:
- Assign neighborhoods and vectors to all relevant egress interfaces.
- Apply preference values to vectors in one or more service-policy elements.
- Apply the service-policy to the services to use these specific paths.
blog migration project
written in 2020.4.6
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