The network works, no excuses!
The following picture was posted on #networker a few weeks ago. Yesterday I experienced the same phenomenon on a Cisco 2960G.
FYI, the two Cisco 3750 switches are stand-alone and not stacked to each other

The following picture was posted on #networker a few weeks ago. Yesterday I experienced the same phenomenon on a Cisco 2960G.
FYI, the two Cisco 3750 switches are stand-alone and not stacked to each other

so what we can call this HARDWARE BUG