The MAC move feature is useful to protect against undetected loops in a VPLS topology, as well as the presence of duplicate MACs in a VPLS service.
If two clients in the VPLS have the same MAC address, the VPLS will experience a high relearn rate for the MAC.
When MAC move is enabled, the 7210 SAS-D, 7210 SAS-Dxp, or 7210 SAS-K 2F1C2T shut down the SAP and create an alarm event when the threshold is exceeded.
When MAC move is enabled, the 7210 SAS-K 2F6C4T or 7210 SAS-K 3SFP+ 8C shut down the SAP or spoke-SDP and create an alarm event when the threshold is exceeded.