The syslog message indicates that the MAC address of host 0054.3831.8253 is flapping between two different ports on the switch, which is a common symptom of an undesirable load-balancing configuration on the switch. This can occur when multiple physical links are not correctly aggregated, leading to frames from a single source being forwarded over multiple paths, resulting in out-of-order delivery and poor application performance. References: Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) - Chapter on Troubleshooting Layer 2 and Layer 3 Connectivity Issues