Inference Tool of Priority Based Packet Forwarding across Network via Feedback

Priority based packet forwarding in the network communication through routers is common mechanism now a days. This can have a significant impact on the accuracy of network measurements, the performance of applications and the effectiveness of network troubleshooting procedures. But There is no protocol to provide routing for end-to-end approach for forwarding packets based on priority. In this paper, We present an inference tool (end-to-end) approach for priority based packet forwarding inferred from feedback of experience through routers. We evaluated our approach via statistical analysis. It enables users to discover such network policies through measurements of packet losses of different packet types. In addition, we surveyed all related network operators and received responses for about half of them all confirming our inferences. out-of-order is unable to find many priority paths such as those implemented via traffic policing. We found it can detect existence of the mechanisms which induce delay differences among packet types such as slow processing path in the router and port-based load sharing.