def METHOD_NAME(self):
    """Retrieves the state of each ethernet VLAN on the device"""
    states = yield self.retrieve_columns(
        ['vtpVlanState', 'vtpVlanType']
    ).addCallback(self.translate_result)
    result = {
        vlan: row['vtpVlanState']
        for (_domain, vlan), row in states.items()
        if row['vtpVlanType'] == 'ethernet'
    }
    defer.returnValue(result)