Evaluating the Fast Rerouting with MPLS Networks as a Fault Tolerance Mechanism with OSPF and IS-IS routing protocols

In this paper an analysis study is carried out by GNS3 as a modeling and simulation environment with a Wireshark tool to investigate the reactions taken inside MPLS networks such as path reestablishment and timing (network convergence) of fail/reconnection/rerouting. However, two practical scenarios have been built with MPLS network; one employs OSPF while the other works with IS-IS as routing protocols to examine their responses and behaviors during link and node failure. The results showed that IS-IS is recorded better results than OSPF in network convergence with MPLS networks.