My router is AR7xx/AR9xxx based. Its ethernet interface fails when it is configured as 1000Mbps. I can see the interface changing its pll register value when it changes from 100 to 1000mbps. But when I ping the router from a 1000mbps interface, I dont recieve any replies, where as I can see packets recieved and replied, on the router, with the help of TCPdump. The chipset is ar7242 to be exact.
I am using openwrt backfire.
-sf