An Approach to Discover the Stable Routes in BGP Confederations

Abstract

This article describes how the current internet is a network of interconnected autonomous systems which is susceptible to route instability when transferring data. The BGP confederation is the essential intra-domain routing protocol that may cause instability on the Internet. So far, route instability has been widely studied for internal BGP. However, the existing routing policies such as APMS and H-SSPP are not adequate for the route stability of BGP confederations. In fact, these routing policies may degrade the network performance parameters in terms of the packet delivery ratio, convergence time, average throughput and the average end to end delay. Therefore, this article proposes the Flexible BGP Confederation Policy Management (FBCPM) to reduce the anomalies. The proposed approach detects the route instability in the networks and provides a policy to construct a stable network. The routing policy shrinks the route oscillations and forwarding loops. Furthermore, the simulation results confirm that the authors' proposed approach has improved network performance parameters compared to other existing approaches.