Application Flow Based Routing and Network QoS Improvement


M. Hashimoto


More details:

In our study, IP flows are divided into multiple flows. This division of a flow is done with header portions of the layers above IP layer, and, thus, is considered as application flow (AP flow).  Each AP flow is set with each cost to refer, and an AP flow is to take a route with the smallest cost within the value of cost assigned to it. Here, we expect improvement in quality of performance per AP flow if QoS requirements are affected by costs.  In regard to routes where TE (traffic engineering) has been applied, we assume that explicit routing by source is also available. In this case, we consider them as one of the kinds of AP flows, as these flows can be divided. Over these conditions we study how AP flow level route control can affect application�s QoS improvement.  For this study, we create models with OPNET Modeler. And in these simulation models, we apply multiple cost metrics (defined by sockets� port numbers) and source routing that explicitly define routes to take. Application QoS statistics verified are HTTP response time and delay of video application.  (Paper in Japanese)  Source: Akita University