173Configuring MAC address learningStep Command Remarks1. Enter system view. system-view N/A2. Enter VSI view. vsi vsi-name N/A3. Enable or disable MACaddress learning for the VPLSinstance.mac-learning { enable | disable } Optional.Enabled by default.Configuring MAC address moveWhen MAC address move is enabled on a PE, the source MAC address of a packet incoming from a portthat is different from the port in the existing MAC entry that contains the source MAC address is addedinto the MAC address table of the VPLS instance of the incoming port.When MAC address move is disabled, the source MAC address of such a packet is not added to theMAC address table of the VPLS instance of the incoming port if the timeout timer of that existing MACaddress entry does not expire.You can disable MAC address move to block illegal users that use spoofed MAC addresses.To enable MAC address move:Step Command Remarks1. Enter system view. system-view N/A2. Enter VSI view. vsi vsi-name N/A3. Enable MAC address move. mac-move enable Optional.Enabled by default.Configuring VPLS instance attributesStep Command Remarks1. Enter system view. system-view N/A2. Enter VSI view. vsi vsi-name N/A3. Specify the encapsulationtype of the VPLS instance.encapsulation { bgp-vpls | ethernet| vlan }Optional.vlan by default, whichcorresponds to the VSI PWencapsulation type of tagged.4. Set the description of the VPLSinstance. description text Optional.No description set by default.5. Shut down the VPLS service ofthe VPLS instance. shutdownOptional.By default, the VPLS service of aVPLS instance is enabled.