We are trying to setup the four ports on our 4404 wireless lan controller to use LAG connected to a 3560G switch. If we connect distribution port 1 to a switch trunked port the unit works as expected. However, if we create an etherchannel containing four gigabit ports we cannot connect to the unit and all the port status LED's remain orange on the switch. They pickup the physical connection but are unable to communicate with the 4404.
We have enabled LAG on the 4404 and have rebooted several times but to no avail. We are using copper SFP's, not fibre to connect to the switch. The 4404 is on software release 5.1.151. Can anyone suggest where we are going wrong?