Open reconfigurable router (ForCES) is based on the separation of control parts and forwarding parts that can satisfy the open programmable request of the next generation router, and is the next generation router's development direction. At present, the research on ForCES architeture router has completed the system structure and interface standard protocol design, and realized the basic logic function blocks (LFBs) of the control element (CE) and forwarding element (FE), ForCES prototypemachine has also succeeded in operation. However, the performance of any software and protocol must be inspected. Performance evaluation can adopt queuing theory、random Petri nets、 stochastic process algebra and OPNET software, etc. OPNET with user-friendly interface and stratified modeling thought can simplify the process of modeling, clear modeling methodology. The paper adopts OPNET Modeler simulation software to study on ForCES architecture router performance.