diff --git a/tempest/api/network/admin/test_negative_quotas.py b/tempest/api/network/admin/test_negative_quotas.py
new file mode 100644
index 0000000..5c4c421
--- /dev/null
+++ b/tempest/api/network/admin/test_negative_quotas.py
@@ -0,0 +1,68 @@
+# Copyright 2015 Cloudwatt
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.network import base
+from tempest import test
+from tempest_lib import exceptions as lib_exc
+
+
+class QuotasNegativeTest(base.BaseAdminNetworkTest):
+    """Tests the following operations in the Neutron API:
+
+        set network quota and exceed this quota
+
+    v2.0 of the API is assumed.
+    It is also assumed that the per-tenant quota extension API is configured
+    in /etc/neutron/neutron.conf as follows:
+
+        quota_driver = neutron.db.quota_db.DbQuotaDriver
+    """
+
+    @classmethod
+    def skip_checks(cls):
+        super(QuotasNegativeTest, cls).skip_checks()
+        if not test.is_extension_enabled('quotas', 'network'):
+            msg = "quotas extension not enabled."
+            raise cls.skipException(msg)
+
+    @classmethod
+    def setup_clients(cls):
+        super(QuotasNegativeTest, cls).setup_clients()
+        cls.identity_admin_client = cls.os_adm.identity_client
+
+    @test.idempotent_id('644f4e1b-1bf9-4af0-9fd8-eb56ac0f51cf')
+    def test_network_quota_exceeding(self):
+        # Set the network quota to two
+        self.admin_client.update_quotas(self.networks_client.tenant_id,
+                                        network=2)
+        self.addCleanup(self.admin_client.reset_quotas,
+                        self.networks_client.tenant_id)
+
+        # Create two networks
+        n1 = self.networks_client.create_network()
+        self.addCleanup(self.networks_client.delete_network,
+                        n1['network']['id'])
+        n2 = self.networks_client.create_network()
+        self.addCleanup(self.networks_client.delete_network,
+                        n2['network']['id'])
+
+        # Try to create a third network while the quota is two
+        with self.assertRaisesRegexp(
+                lib_exc.Conflict,
+                "An object with that identifier already exists\\n" +
+                "Details.*Quota exceeded for resources: \['network'\].*"):
+            n3 = self.networks_client.create_network()
+            self.addCleanup(self.networks_client.delete_network,
+                            n3['network']['id'])