Blinking activity lights usually just indicate activity. If the activity lights are blinking rapidly at the same time, it would not hurt to look into things some, it could be an indication of a broadcast storm, STP, collision frames.  Are we seeing any poor network performance? Was anything recently changed/added to the network? Any configuration changes?  Is this a new setup or has it been working fine up until now? What firmware are the switches at? On the switch interfaces we can do a command # show rmon statistics ethernet g1 Then look for the number of multicast and collision frames. See if any interfaces have a high number. We can also look at the command # show logging To see if any recent events that were logged may give us an idea  This should get us started in the right direction of checking into things. Keep us updated on what your findings are. Thanks.
I have a network using 3x5324,2x3348 and a 6024. The switches are interconnected though the ethernet ports on the 6024. All of the activity light flash rapidly at the same time(in sync). Shouldn't the lights not flash in sync with each other and should they reflect the weight of network usage? IE in lightly network they should blink slowly.
PowerConnect issues?