Theoretical and Experimental Study of Statistical-Decision Method for Link-Capacity Adjustment

To utilize network resources effectively and guarantee the system reliability in Internet exchanges (IXs) in the future, the use of photonic IXs that employ optical cross connects and generalized multiprotocol label switching is considered. This paper presents a theoretical and experimental study of link-capacity adjustment for a photonic IX employing a statistical-decision method for traffic monitoring. We present parameter estimation of the statistical-decision method in detail considering the traffic characteristics in IXs. Then, experiments on the link-capacity adjustment are presented. The first experiment shows the link-capacity adjustment of an optical path to evaluate path addition from one path to two and path deletion from two optical paths to one. The second experiment shows the link-capacity adjustment using multiple paths. We confirmed that there is no packet/frame loss in either experiment during the transmission of demo traffic, which simulates daily traffic changes.