Hi, I got this error frequently in my Cisco Catalyst 3750 (occurred in several ports) and did not understand what to do.
Description: Interface GigabitEthernet1/0/19, changed state to up
Explanation: The interface hardware went either up or down.
Recommended Action: If the state change was unexpected, confirm the configuration settings\n\ for the interface.
We have several VLAN configured on it.