Comparative Analysis of Conventional IP Network and MPLS Network over VoIP Application

Multiprotocol Label Switching (MPLS) is the latest technology in the evolution of routing and forwarding mechanisms for the core of the Internet. It ensures the reliable delivery of the Internet services with high transmission speed and lower delays. Traffic Engineering (TE) in MPLS is used for effectively managing the networks for efficient utilization of network resources. MPLS technology makes it more suitable for implementing real-time applications such as Voice and video due to lower network delay, efficient forwarding mechanism, scalability and predictable performance of the services. In this paper the performance of Voice over Internet Protocol (VoIP) application is compared in MPLS network and conventional Internet Protocol (IP) network. The comparison is based on the performance metrics such as Voice jitter, Voice packet end-to-end delay, voice delay variation, voice packet send and received. The simulation results are analyzed and it shows that MPLS based solution provides better performance in implementing the VoIP application. Keywords— Multiprotocol Label Switching (MPLS), Traffic Engineering (TE), Voice over Internet Protocol (VoIP), Internet Protocol (IP), Label Switching Router (LSR), Label Switched Path (LSP)