How to clear MAC address flapping alarms on an AC

The possible causes for MAC address flapping alarms are as follows:

- The interfaces where a loop occurs are added to the same VLAN.

- Cables are connected incorrectly.

- A loop occurs on the network.

Troubleshooting procedure:

1. Connect cables on the interfaces correctly and check whether the alarm persists.

If so, go to step 2.

If not, go to step 6.

2. Check whether the two interfaces that learn the same MAC address can be added to different VLANs based on the network topology.

If yes, go to step 3.

If not, go to step 4.

3. Add the two interfaces to different VLANs, and check whether the alarm persists.

If so, go to step 4.

If not, go to step 6.

4. Disable loop detection and enable STP. Check whether the alarm persists.

If so, go to step 5.

If not, go to step 6.

5. Contact Huawei technical personnel.

6. End.

Scroll to top