diff --git a/neutron/services/network_segment_range/plugin.py b/neutron/services/network_segment_range/plugin.py
index 72185f288a9..8dbd28e577f 100644
--- a/neutron/services/network_segment_range/plugin.py
+++ b/neutron/services/network_segment_range/plugin.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 from neutron_lib.api.definitions import network_segment_range as range_def
+from neutron_lib.api import validators
 from neutron_lib import constants as const
 from neutron_lib.db import api as db_api
 from neutron_lib import exceptions as lib_exc
@@ -40,6 +41,20 @@ def is_network_segment_range_enabled():
                for p in ['network_segment_range', network_segment_range_class])
 
 
+def _get_physical_network(network_segment_range):
+    if network_segment_range.get('network_type') != const.TYPE_VLAN:
+        return None
+
+    physical_network = network_segment_range.get(
+        "physical_network", const.ATTR_NOT_SPECIFIED)
+    if not validators.is_attr_set(physical_network):
+        message = _("Network type %s requires 'physical_network' to be "
+                    "specified while creating new range") % const.TYPE_VLAN
+        raise lib_exc.BadRequest(resource=range_def.RESOURCE_NAME,
+                                 msg=message)
+    return physical_network
+
+
 class NetworkSegmentRangePlugin(ext_range.NetworkSegmentRangePluginBase):
     """Implements Neutron Network Segment Range Service plugin."""
 
@@ -77,9 +92,7 @@ class NetworkSegmentRangePlugin(ext_range.NetworkSegmentRangePluginBase):
         filters = {
             'default': False,
             'network_type': network_segment_range['network_type'],
-            'physical_network': (network_segment_range['physical_network']
-                                 if network_segment_range['network_type'] ==
-                                 const.TYPE_VLAN else None),
+            'physical_network': _get_physical_network(network_segment_range)
         }
         range_objs = obj_network_segment_range.NetworkSegmentRange.get_objects(
             context, **filters)
diff --git a/neutron/tests/unit/services/network_segment_range/test_plugin.py b/neutron/tests/unit/services/network_segment_range/test_plugin.py
index 662c55ed730..08970d0ad0c 100644
--- a/neutron/tests/unit/services/network_segment_range/test_plugin.py
+++ b/neutron/tests/unit/services/network_segment_range/test_plugin.py
@@ -175,6 +175,17 @@ class TestNetworkSegmentRange(testlib_api.SqlTestCase):
             self.context,
             network_segment_range)
 
+    def test_create_network_segment_range_missing_physical_network_for_vlan(
+            self):
+        test_range = self._vlan_range.copy()
+        test_range.pop("physical_network")
+        network_segment_range = {'network_segment_range': test_range}
+        self.assertRaises(
+            exc.NeutronException,
+            self.plugin.create_network_segment_range,
+            self.context,
+            network_segment_range)
+
     def test_update_network_segment_range(self):
         test_range = self._vlan_range
         network_segment_range = {'network_segment_range': test_range}