Alan, there are many normal things that can cause this, like ARP broadcast, unknown unicast especially in a large flat nets.
I would start there, but remember it might be normal. Jeff Fitzwater OIT Network Systems Princeton University wrote: > Hi, >> 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. > > if all the usual things are okay - ie spanning-tree is stable, there are no > links going up/down, > you have eg portfast for edge devices etc etc then perhaps all you are seeing > are the usual busy > lights for cisco LEDs - what sort of rapid blinking? all blinking at same > time? have you done a > port-mirror of the uplink to see what is really going on? > > alan > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
