Need help : implement Gigabit Ethernet

when i tried ping or telnet, Tx led doesn't blink and sometimes Rx led blinks but not necessery with the request from my pc

i installed wireshark but couldn't see any transaction between my board and the pc

then i tried o plug the board and my pc both, again without success

just for you to know, i would like to do this architecture, maybe you can give some advices (and i think i'll use sdram rather than sram)

thanks in advance