diff --git a/vmware_nsx/db/nsxv_db.py b/vmware_nsx/db/nsxv_db.py
index ba7a2772b6..b64ff4a427 100644
--- a/vmware_nsx/db/nsxv_db.py
+++ b/vmware_nsx/db/nsxv_db.py
@@ -549,6 +549,15 @@ def get_network_bindings_by_physical_net(session, phy_uuid):
             all())
 
 
+def get_network_bindings_by_physical_net_and_type(session, phy_uuid,
+                                                  binding_type):
+    session = session or db.get_reader_session()
+    return (session.query(nsxv_models.NsxvTzNetworkBinding).
+            filter_by(phy_uuid=phy_uuid,
+                      binding_type=binding_type).
+            all())
+
+
 def delete_network_bindings(session, network_id):
     return (session.query(nsxv_models.NsxvTzNetworkBinding).
             filter_by(network_id=network_id).delete())
diff --git a/vmware_nsx/plugins/nsx_v/plugin.py b/vmware_nsx/plugins/nsx_v/plugin.py
index 3ddac96581..ee6462f093 100644
--- a/vmware_nsx/plugins/nsx_v/plugin.py
+++ b/vmware_nsx/plugins/nsx_v/plugin.py
@@ -679,6 +679,15 @@ class NsxVPluginV2(addr_pair_db.AllowedAddressPairsMixin,
                       not self.nsx_v.vcns.validate_network_name(
                           physical_network, network['name'])):
                     err_msg = _("Portgroup name must match network name")
+
+                # make sure no other neutron network is using it
+                bindings = (
+                    nsxv_db.get_network_bindings_by_physical_net_and_type(
+                        context.elevated().session, physical_network,
+                        network_type))
+                if bindings:
+                    err_msg = (_('protgroup %s is already used by '
+                                 'another network') % physical_network)
             else:
                 err_msg = (_("%(net_type_param)s %(net_type_value)s not "
                              "supported") %
diff --git a/vmware_nsx/tests/unit/nsx_v/test_plugin.py b/vmware_nsx/tests/unit/nsx_v/test_plugin.py
index d60db58b3e..657de36e59 100644
--- a/vmware_nsx/tests/unit/nsx_v/test_plugin.py
+++ b/vmware_nsx/tests/unit/nsx_v/test_plugin.py
@@ -323,6 +323,30 @@ class TestNetworksV2(test_plugin.TestNetworksV2, NsxVPluginV2TestCase):
             for k, v in expected:
                 self.assertEqual(net['network'][k], v)
 
+    def test_create_portgroup_network(self):
+        name = 'pg_net'
+        expected = [('subnets', []), ('name', name), ('admin_state_up', True),
+                    ('status', 'ACTIVE'), ('shared', False),
+                    (pnet.NETWORK_TYPE, 'portgroup'),
+                    (pnet.PHYSICAL_NETWORK, 'tzuuid')]
+        providernet_args = {pnet.NETWORK_TYPE: 'portgroup',
+                            pnet.PHYSICAL_NETWORK: 'tzuuid'}
+        with self.network(name=name,
+                          providernet_args=providernet_args,
+                          arg_list=(pnet.NETWORK_TYPE,
+                                    pnet.PHYSICAL_NETWORK)) as net:
+            for k, v in expected:
+                self.assertEqual(net['network'][k], v)
+
+            # try to create another one on the same physical net will failure
+            res = self._create_network(
+                self.fmt, name, True,
+                providernet_args=providernet_args,
+                arg_list=(pnet.NETWORK_TYPE,
+                          pnet.PHYSICAL_NETWORK))
+            data = self.deserialize(self.fmt, res)
+            self.assertIn('NeutronError', data)
+
     def test_delete_network_after_removing_subnet(self):
         gateway_ip = '10.0.0.1'
         cidr = '10.0.0.0/24'
diff --git a/vmware_nsx/tests/unit/nsx_v/vshield/fake_vcns.py b/vmware_nsx/tests/unit/nsx_v/vshield/fake_vcns.py
index 685dbbda36..08231ce330 100644
--- a/vmware_nsx/tests/unit/nsx_v/vshield/fake_vcns.py
+++ b/vmware_nsx/tests/unit/nsx_v/vshield/fake_vcns.py
@@ -1109,7 +1109,7 @@ class FakeVcns(object):
 
     def create_spoofguard_policy(self, enforcement_points, name, enable):
         policy = {'name': name,
-                  'enforcement_point': enforcement_points[0],
+                  'enforcementPoints': [{'id': enforcement_points[0]}],
                   'operationMode': 'MANUAL' if enable else 'DISABLE'}
         policy_id = len(self._spoofguard_policies)
         self._spoofguard_policies.append(policy)
@@ -1118,7 +1118,7 @@ class FakeVcns(object):
     def update_spoofguard_policy(self, policy_id,
                                  enforcement_points, name, enable):
         policy = {'name': name,
-                  'enforcement_point': enforcement_points[0],
+                  'enforcementPoints': [{'id': enforcement_points[0]}],
                   'operationMode': 'MANUAL' if enable else 'DISABLE'}
         self._spoofguard_policies[int(policy_id)] = policy
         return None, ''