How to use UDP Receive......

I want to receive data from a UDP client which will send data of 4608 bytes continuously to server. But i am not aware of the format that data will come to server. I want to use simulink to receive the data. I used UDP receive (source block) and set the parameters like Data size : 4068, Data type: uint16. Connected the data to SCOPE. but when i run the simulink model it is giving error.

The specified amount of data was not returned within the Timeout period.Please ensure that data is being sent to the specified port or specify a greater timeout value.

how to resolve the above problem...