BACKGROUND

The Border Gateway Protocol (BGP) is a standard protocol to exchange reachability information between Autonomous Systems (AS). Ensuring that the BGP communication with external peers is healthy and follows agreed policies ensures stability and security of the network. Abnormal events can be originated by several causes, such as power outages, router misconfigurations, worms, route hijacks and Internet leaks. Abnormal BGP events can affect routing infrastructure and cause delays, data loss and connectivity problems over the Internet. Such anomalies are typically difficult to detect.

