We have two units of the cisco 2960, both link using the Gigabit port.
Recently, both switches hang and all the leds are flashing. All the connection to the switches breaks. The only way to resolve this problem is to restart the switches. This happen only once after about more than half a year of operation.
I have search around but could not find any information what causes the switch to hang. Do you guys have any ideas? And how can this be prevent fom happening again?