No traffic on all interfaces right? This happened after a software update right?You may have a counterfeit switch that was broken during the update procedure. Check for this during the boot:POST: ACT2 Authentication : BeginPOST: ACT2 Authentication :...
The solution is to RMA the unit, but it's very hard to get a replacement without SMARTnet, so I have two brand new switches that stayed on the box for 1.5 years and now I can't get a replacement of it, even with the Cisco's Lifetime Warranty.
I have the same problem on two switches. Bought two of them for technical reserve and now after opening the boxes two of them are on this status. POST: ACT2 Authentication : BeginPOST: ACT2 Authentication : End, Status FailedWaiting for Stack Master ...