This is telling you it is seeing this mac address on all these ports , possible loop or something . I would look and see what is attached to these ports that might cause this .
Do you have wireless access points on the switch in question? A wireless user switching back and forth between two access points on different ports will appear to the switch to be flapping. The only "solution" is to plug all your access points into a hub and plug that into the switch, which will mask the flapping from the switch. Or just ignore the messages.
"Flapping" means the switch is seeing the mac address (nic card hardware address) appearing on different switch ports. If the address changes ports a lot, the switch tells you about it. The switch cares because it has to keep a table of which mac is on which port, so it knows where to send packets. The switch is grumbling about having to update its tables a lot.
One thing that does'nt seem to be metioned is etherchannelling.
Maybe the host has etherchannelling enabled and the switch has'nt.
Barry.
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