This paper describes an analytical method about performance optimization in MPLS (Multiprotocol Label Switching) Traffic Engineering
At first muitipath MPLS system model is described
Then we put forward an improved dynamic traffic partitioning algorithm on multipath based on the introducing of the conception of traffic splitting granularity g
which can realize the dynamical traffic regulation on LSPs (Label Switched Paths) and decrease computing quantity.This paper verifies the performance and stability of the algorithm by numerical analysis.