Abstract
This paper describes modeling and simulation tools that are used to evaluate MPLS-based networks. The first tool is GNS3 that could be used in designing and modeling computer networks; while Wireshark can enhance the protocols investigation process. The second tool is OpenSimMPLS tool which enable the designers to make the modeling and simulation process as an interactive study. The third tool is the well-known OPNET tool. However, using OPNET the VOIP application is examined on MPLS network and then compared with conventional IP/TCP network.