COMPARATIVE PERFORMANCE ANALYSIS of MPLS over ATM and IP over ATM METHODS for MULTIMEDIA TRANSFER APPLICATIONS

This paper presents fundamental aspects of MPLS over ATM method, IP over ATM method and multimedia application traffics with different quality of service (QoS) needs. Using a simulation program, the MPLS over ATM method providing ABR, CBR & VBR QoS support, and the IP over ATM method providing UBR QoS support for transferring data, voice and video traffics are modeled. Having simulated the models under varying loads, simulation results obtained and comparisons of the results are presented. Comparing the average delay and delay variation graphs, not only does MPLS over ATM method provide improved results for all of the multimedia applications but also overcomes the worst disadvantage of the IP over ATM method producing similar and erratic results for the data, voice and video application traffics.