A Research of MPLS-Based Network Fault Recovery

Researching on use of new real-time connection-oriented services like streaming technologies and mission-critical transaction-oriented services and more reliable network become inevitable trends presently. MPLS is a next generation backbone architecture, it can speed up packet forwarding to destination by label switching. However, if there exists no backup LSP when the primary LSP fails, MPLS frames cannot be forwarded to destination. Therefore, fault recovery has become an important research area in MPLS Traffic Engineering. At present, two famous methods, Makam and Haskin are belonging to Protection Switching, and other methods basically come into being on base of them. But these two famous methods both have its disadvantage. In order to solve their drawback, the thesis tries to do some exploration on the MPLS-based recovery model. This new model in the thesis using the Reverse Backup Path to solve the wrapping of data back to the path is too long, and using the simulation tool NS-2 to do some experiments. Finally the simulation experiments show that new method of MPLS-based recovery has less packet disorder and much lower delay and packet losses than the two famous methods.