How to detect Ethernet Cable Connect in STM32f746G DISC board

[RShar.9]

Hi i am using ethernet in stm32f746g disc board. Is there any way to check in program that the cable is connected from both side (board and router side). Because LED start glow in ethernet connector when both side connected but want to know how to check in the program.

I am using LWIP stack in the program to use ethernet.