Fast Reroute in MPLS Networks

With the widespread of new fast networks and need for critical application, survivability, reliability and quality of service became an sensational issue. Recovery mechanism used by IP network spent a lot of time from several seconds to minutes. This causes large drop in data packages. MPLS is a next generation backbone architecture, which can speed up packet forwarding to destination by label switching especially with its traffic engineering capability. MPLS recovery mechanisms are increasing in popularity because they can guarantee fast restoration and high QoS assurance. We simulated in our research several scenarios for link failure using fast reroute technology in MPLS network's using Opnet. Results lead us to consider this technique successful in limiting delay and packet drop in recovery cycle.