[c-nsp] Switch lights rapid blinking

[Michael Sprouffske]

Can someone please point me in the right direction to correct this issue.  I came into a network that is using the default vlan and for about 2 weeks now, every switch and port is rapidly blinking.  I looked at wireshark and don't seen anything out of the ordinary.  I also checked for loops in the network and don't see any.  Is there some tool I can use to track down what is causing this?  I'm running cisco 2960's all over.