Nowadays Multiprotocol Label Switching (MPLS) and Internet Protocol (IP) are widely usedrntechnologies in service providers and enterprise networks across the globe. In this thesis, thernbehavior of traffic in both IP and MPLS are studied since they have more advantageous throughrnall network models. MPLS -enabled infrastructure has the ability to transport any type of payloadrn(Asynchronous Transfer Mode, frame relay, and Ethernet) over it, within the same timernproviding a multipurpose architecture. An incoming packet is arranged only once as it enters intornthe MPLS domain and gets assigned label information. Then after all decision processes along arnspecified path is based upon the attached label rather than assigning destination IP addresses.rnThis work also presents the design and simulation of MPLS and IP network for differentrnapplications. These applications used for the performance evaluation including voice, FilernTransfer Protocol (FTP) and Hyperlink Text Transfer Protocol (HTTP). The parameters used forrnthe analysis are throughput, link utilization, packet delay, jitter, page response time and FTPrnresponse time. Comparative analysis of the quality of services is a set of performance models tornevaluate the different combination of IP and MPLS network routing topologies have beenrnexplained for the proposed network model. The results obtained from this study shows how arnservice provider can benefit from MPLS services with increasing network performance likernthroughput, mean opinion score, a packet sent and received. Comparing MPLS queuing delayrnresults with the IP result from the shortest path routing scenario network, the queuing delay keeprna much less queuing delay in MPLS configuration with value (Maximum 0.00002 seconds andrnMinimum 0.00001 seconds) between Http Client and ISP Branch 1. It can be observed that thernqueuing delay MPLS scenario is more balanced between both paths comparing it with IPrnscenario.