Search Results

1. M. Luoma and M. Ilvesmäki, Measurement based traffic classification in differentiated services, in Internet Performance and Control of Network Systems II in ITCom 2001, vol. 4523, SPIE, 2001 (bib)

   Abstract: Internet is moving towards the time of Quality of Service (QoS) networking. This move is taking place through the application of Di erentiated Services (Di Serv) architecture. Di Serv o ers low overhead tools to implement class based di erentiation for the trac. Decision of di erentiation is, however, left as an open matter, to be settled between service provider and customer. Majority of customers are, based on our assumption, not ready to say what should be the quality or class for their trac. This leaves space for provider intervention - service, to do this classi cation for the customer. Service provider is dealing with three problems which need to be solved concurrently: (1)Deciding the proper forwarding class for the application data stream (2)Separation of application flows from the packet stream (3)Constructing proper forwarding treatments. If successful with this operation, operator has direct control over the resource utilization within di erent classes and therefore service level provided to the customer. In order to cope with this service, tools for analyzing network trac and forming suitable trac groups are required. We present algorithms and methodologies which do di erentiation of trac based on the activity/trac characteristics of applications. These values are determined from the flow analysis of packet lengths and inter-sending times.