The VLAN translation is applied in both ingress and
egress sides of all the Layer 2 trunks. It makes the
traffic arriving on the VLAN with the corresponding
instance of cvtGlobalOriginalVlan on the device to be
mapped to or tagged with the VLAN of this VLAN ID. It
also causes all the traffic internally tagged with the
VLAN of this VLAN ID and leaving the trunk ports to
be tagged with the corresponding instance of
cvtGlobalOriginalVlan on the device.