BGP flow routes for traffic filtering

You can propagate flow routes as part of BGP through flow-specification network-layer reachability information (NLRI) messages. Flow routes provide traffic filtering and rate-limiting capabilities much like firewall filters. Propagating flow routes as part of BGP enables you to propagate filters against denial-of-service (DOS) attacks dynamically across autonomous systems. Include the flow route name set of statements at the [edit routing-options] hierarchy level.