Transparent forwarding of CFM packets over VPLS

Device continues to forward CFM packets over a VPLS even if the packets contain more VLAN tags than the number configured on an interface. In earlier releases of Junos OS, irrespective of the number of tags in a packet, the router forwards or drops the packet based on the interface configuration. In those releases, all CFM messages are parsed at the provider edge. But as a result of this feature support, only those CFM packets are parsed for which the number of VLAN tags matches the number configured on the provider edge interface.