Embedded BGP Routing Monitoring

Previous studies ([7],[12]) explained a significant part of the BGP routing table growth in the Internet by the growth of specific operator practices like multi- homing and load-balancing. This article describes an embedded routing monitoring module aiming at detecting those practices, with the objective to help the router operator to better control BGP routing table size. The document first presents the motivations and the expected results of the study. Architecture of the routing monitoring module which has been prototyped are detailed, and results of experimentations are presented and analyzed. The article concludes with benefits and limitations of this approach, as well as ways this monitoring could be used to globally reduce BGP routing table thanks to route filtering.