Theoretical and experimental research of packet delays in software defined networks

This work is concerned with determination of packet delays inserted by using OpenFlow protocol in virtual computing cluster performed over software defined network by OpenNebula system with installed Floodlight controller. We experimentally found moment characteristics of packet delays. Based on these values we theoretically determined packet delays in channels both with and without OpenFlow via traffic simulation in the kind of queuing system H2/M/1. According to results, packer delay under using OpenFlow protocol is more 1.5 times then under without it. This fact should be taken into account for heavy load software defined network, while we performed experimental research under light load channels.