Loop prevention in VPLS network due to MAC moves

The base learning interface approach and the statistical approach can be used to prevent a loop in a VPLS network by disabling the suspect customer-facing interface that is connected to the loop. Some virtual MACs can genuinely move between different interfaces and such MACs can be configured to ignore the moves. The cooloff time and statistical approach wait time are used internally to find out the looped interface. The interface recovery time can be configured to auto-enable the interface that gets disabled due to a loop in the network. To configure these parameters of VPLS MAC moves, include the vpls-mac-move statement at the [edit protocols l2-learning] hierarchy level. The show vpls mac-move-action instance instance-name command displays the learning interfaces that are disabled, in a VPLS instance due to a MAC move. The clear vpls mac-move-action interface ifl-name command enables an interface disabled due to a MAC move.