We have just purchased a HP C-Class enclosure complete with 2 3020 switches. I am unable link the 3020 to our core 6509 using the 4 fibre uplink ports. The port on the 6509 shows as up however the corresponding 3020 port shows as down. I have tried various combination of port settings, and finally manged to get one of the 3020 linked up by physically setting the speed on the 6509 port and setting the 3020 port to auto speed. Once the ports are connected I fixed both ends. The ports are configured for port-cannel and trunked. However no matter what I do the second 3020 is not connecting to the 6509. I also believe that the 3020 do not support LX SFP modules because when I put these modules in the 3020 reboots.