Time-Sensitive Overlay Routing via Segment Routing with Failure Correction

Abstract

Due to the overlay technologies, service providers have a logical view of the underlay network and can optimize quality of experience without modifying the physical network. However, the cross-layer interaction inevitably causes network fluctuation due to their inconsistent optimization objectives. Besides, network failures that occur in the underlay not only cause network performance degradation, but also significantly increase the frequency of cross-layer interaction. These problems make the network fluctuate for a long time, reduce the network performance and influence the user experience, especially for time-sensitive applications. In this paper, we propose a failure correction method based on segment routing to deal with the control plane failures and the data plane failures that occur in the underlay. We propose a cross-layer structure with failure correction mechanism, investigate the cross-layer interaction and design two strategies to eliminate fluctuations and make the network converge quickly.