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BGP Community 55002:75 and Prefix Length ≤ /28

Description

To minimize service degradation for customers using Routed DDoS protection, Silverline will engineer internal traffic routing between Scrubbing Centers for a CIDR prefix length that is less than or equal to /28.
 
  • In the examples illustrated below [Diagram One and Two], the customer would like to de-prefer US-East and prefer US-West due to a variety of reasons (better performance, faster route propagation, shorter BGP path to its own customers, etc.)

  • Customer can then select to advertise the route using a BGP Community string to send traffic through US-West instead. The second example [Diagram Three] indicates a traffic flow configuration that includes 3 distinct Scrubbing Centers.

For a list of commonly-used BGP Communities, see How do BGP communities work for customer routing preferences?

 

Environment

  • Silverline DDoS Protection
    • Routed

 

Diagrams

Click image to enlarge or download as a PDF.

routed_requirements_55002-75-75px-in.png

 

 

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