I have 2 port on my 4510R switch... there is flapping going on between 2 ports in vlan one. both of these ports are connected to a cisco 4400 Wireless Controller.
There are no recommended solutions or reasons for why this is happening. the only information displayed in the system message is the type of error if this can help
Explanation: not available
Recommended action: not available
please adise to how to start troubleshooting the above message
We saw this until we quit running in H-Reap. Is the 4402 connected via a trunk or via access? When the AP's are using H-Reap, a device that is in between the two devices will alternate between them and the switch will see that, causing the MAC-FLAP.