Rate Limiting in an Event-Driven BGP Speaker

Implementing BGP route processing in an event-driven manner appears to be advantageous in terms of scalability. However, the inter-domain routing system as a whole would be overwhelmed without some type of rate limiting on BGP update streams. At first glace, an event-driven, pipelined route processing model does not seem to fit well with the traditional timer-based way of implementing BGP rate-limiting. In this paper we present a lazy event-driven BGP route processing pipeline that easily accommodates rate limiting.