i have buyed 2 new slm2048 g5, and on default configuration, without any security , on 1 switch I have 7 or 8 ports that cannot pass to Up. The uplink is green (continuous) on switch, and in Gui is down and no green hilight of port.
On computer is connection 1Gbps. I move same wire in other port and works fine.
I have contacted the supplier and i will give back the new switch...(cisco, cisco , cisco, nutz..nutz...China factory..a?....)