I am not able to enable auto negotiation on up link ports (SFP Ports) of Extreme 200 series switch. Auto negotiation is by default enabled on port 1 to 24 and I am able to disable also by manually setting the speed of these ports.
Problem my customer is facing that to connect his old switch he has to disable auto negotiation on 1G up link ports of old Extreme A4 switch to communicate with his new Extreme 210 switches. He do not want to enable auto negotiation on both switches.
SFP model MGBIC-LC09 has been installed on both switches.
Firmware version of switch is 18.104.22.168