Best suitable transport protocol under various scenarios of Multi-Protocol Label Switching

Multi-Protocol Label Switching is a best technique for efficient utilization of network resources, a small overhead labels. The Internet Protocol is the dominant protocol in computer networks today. MPLS adds the flavor of virtual circuits in computer networks. Which transport layer protocol (TCP Vegas, TCP New Reno, SCTP) performs the best when it is used along with MPLS is still an open question. We evaluated the efficiency of the three transport protocols under MPLS technology by considering average delay, throughput, channel wastage and average packet delivery performance as the decision variables. The results showed that in scenario of delay TCP Vegas perform better with minimum average delay while in case of throughput, channel wastage and packet delivery SCTP perform better than other protocols used in this research. Results are obtained through simulations over Network simulator 2.