This read-write object holds the VLAN Id that the Ethernet port pushes onto untagged frames as they head toward the network, effectively assigning a Port VLAN ID (PVID) to raw customer traffic. It is the value an administrator sets to place an otherwise untagged Ethernet Virtual Private Line (EVPL) customer's traffic into a specific carrier VLAN for transport across the network. For instance, configuring this to VLAN 200 alongside enabling cmEthernetTrafficPortIngressPushPVIDEnabled means every untagged frame entering that port gets wrapped in VLAN 200 before being switched onward.