Analysis of dynamic traffic grooming in realistic scenarios

IP over Optical networks are emerging as one of the future architectures to support the growth of the Internet by simplifying the the network structure and layering. Many evaluation works on these architectures, however, simply neglect the possible effects of a real network environment. In this paper we compare some overlay dynamic grooming algorithms in realistic scenarios from both the topology and traffic pattern point of view. As reference we present results where IP traffic is considered as constant bitrate sessions and highlight the differences between the models. Results show that the traffic model, scenario, and topology may have a larger effect than expected in grooming algorithms, specially when dynamic, reactive protocols are deployed.