IGP-as-a-backup for robust SDN networks

Olivier Tilmans, Stefano Vissicchio
2014 10th International Conference on Network and Service Management (CNSM) and Workshop  
One of the main concerns on SDN is relative to its ability to quickly react to network failures, while limiting both the control-plane overhead and the additional forwarding state kept by data-plane devices. Despite its practical importance, this concern is often overlooked in OpenFlow-based proposals. In this paper, we propose a new architecture, called IBSDN, in which a distributed routing protocol flanks OpenFlow to improve network robustness, reaction to failures, and controller
more » ... troller scalability. In deeply exploring this idea, we complement our architecture with data-plane triggered mechanisms that improve its efficiency. We prove that the resulting solution ensures robustness for any combination of topological failures, and quickly reduces the path stretch. Finally, experimenting with a prototype implementation, we show that our approach is practical and overcomes the main limitations of previous work.
doi:10.1109/cnsm.2014.7014149 dblp:conf/cnsm/TilmansV14 fatcat:k6xdpdzagvfcpb2rs7zmuhddhq