We are using DP83849ID Ethernet phy chip in or project. The phy chip is connected to the processor via RMII and the processor we are using is i.MX 6ULL. As told in the previous E2E thread we are using DP83848 driver for this Ethernet phy chip. Our problem is that when we are making static IP connection between our board and laptop, it is showing as connection established in the laptop and in the console it is showing as "Link is Up - 100Mbps/Full - flow control rx/tx". But when we are trying to ping the board from the laptop or vice versa it is showing as "Destination Host unreachable". We checked the cable it is working fine and the procedure for creating static connection is also correct. When we probed the TX line from processor to the phy chip while the ping is initiated from the board, it shows no activity in the line. Also there is no increase in RX and TX bytes when we give ifconfig in the board's console.