Forum Discussion
Altera_Forum
Honored Contributor
9 years agoNegotiation must be enabled so that your system communicates with the other end of the link and the normal link startup negotiations can be done. Much more than just speed is agreed to between the ends. See the Ethernet spec if you are curious. If negotiation is disabled this communication cannot happen. So, disable gigabit but not negotiation. Check the LEDs on each end of the link to see if link is established.