Like a Layer 2 switch, learned MACs within a VPLS instance can be aged out if no packets are sourced from the MAC address for a specified period of time (the aging time). The age timer for the VPLS instance specifies the aging time for locally learned MAC addresses.
The aging mechanism is considered a low priority process. In most situations, the aging out of MAC addresses can happen in within tens of seconds beyond the age time. To minimize overhead, local MAC addresses on a LAG port, in some circumstances, can take up to two times their respective age timer to be aged out.