One of my switch’s was offline in the management even though I see activity on the network ports.
I rebooted the switch and I beleive it said it was on version 2.1m with the update arrow so I clicked update, waited a while and it went offline and never came back. So I tried resetting it, after blinking green for a while it came up with version 2.1i with update arrow and was functioning, I could see the activity in management and all was well. After about 30 minutes of it being online and working I hit the update arrow and told it to update now. Switch went offline and is still offline after 30 minutes but it does have a white LED on top and blinking activitity led’s on the network ports.