None of it, it's an Atmel Risc Microcontroller (µC). It's connected via UART and i'll send data to it and the µC answers.
I couldn't tell u anything about the traffic it depends on the count of TCP-clients and the count of commands they send to the µC.
In some situations the µC send a lot of data in a short time and in others some little packets in 1 hour.