A study on the routing convergence of Latin American networks

Abstract

BGP is known to suffer from slow routing convergence after network connectivity changes. In this paper we identify the impact of network connectivity on the routing convergence delay and discuss its implication for networks in the Latin American region. BGP routing table snapshots showed that some networks in Latin American region are directly attached to large Internet service providers, while others attached to regional services providers. Our study shows that, when an edge network loses some of its connectivities, its attachment point to the Internet has great impacts on the BGP convergence delay. Our analysis shows that proximity to large Internet service providers improves the convergence time. We confirm our analysis through both simulation experiments and BGP routing log analysis for specific Latin American destinations.