The device is running VLAN in 1 of 2 possible
modes. 1) Distributed VLAN - the configuration
and VLAN memberships are shared with other
devices in the same domain. 2) Stand-alone - the
configuration has only local significance.
When running the devices in a stack the values
3 or 4 will be returned according to the actual
mode, but only the values 1 and 2 will be
accepted for set-requests.
For some devices this object can not be set to
fullVlan. Refer to vlanPolicySupportedVlanModes
object.