Shaping of virtual path traffic for ATM B-ISDN

Two mechanisms for shaping private network traffic in asynchronous transfer mode (ATM) broadband ISDN (B-ISDN) are proposed and analyzed. The shapers utilize the information about the network policer and implement a form of priority service to assure satisfactory levels of cell loss and delay for traffic streams with differing service requirements multiplexed into a policed ATM virtual path. The performance of the shapers is analyzed using stochastic-fluid methods and Markov-modulated models of bursty traffic sources. The numerical results illustrate the performance benefits and flexibility obtainable through the use of the proposed shapers in comparison to a simple policed path without traffic shaping