diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 14c8500..68ca66a 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -184,24 +184,6 @@
                 found = n['id']
         self.assertIsNotNone(found, "Port list doesn't contain created port")
 
-    @attr(type=['negative', 'smoke'])
-    def test_show_non_existent_network(self):
-        non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.show_network,
-                          non_exist_id)
-
-    @attr(type=['negative', 'smoke'])
-    def test_show_non_existent_subnet(self):
-        non_exist_id = data_utils.rand_name('subnet')
-        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
-                          non_exist_id)
-
-    @attr(type=['negative', 'smoke'])
-    def test_show_non_existent_port(self):
-        non_exist_id = data_utils.rand_name('port')
-        self.assertRaises(exceptions.NotFound, self.client.show_port,
-                          non_exist_id)
-
 
 class NetworksTestXML(NetworksTestJSON):
     _interface = 'xml'
diff --git a/tempest/api/network/test_networks_negative.py b/tempest/api/network/test_networks_negative.py
new file mode 100644
index 0000000..6820c25
--- /dev/null
+++ b/tempest/api/network/test_networks_negative.py
@@ -0,0 +1,60 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 Huawei Technologies Co.,LTD.
+# Copyright 2012 OpenStack Foundation
+# 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.common.utils import data_utils
+from tempest import exceptions
+from tempest.test import attr
+
+
+class NetworksNegativeTestJSON(base.BaseNetworkTest):
+    _interface = 'json'
+
+    @attr(type=['negative', 'smoke'])
+    def test_show_non_existent_network(self):
+        non_exist_id = data_utils.rand_name('network')
+        self.assertRaises(exceptions.NotFound, self.client.show_network,
+                          non_exist_id)
+
+    @attr(type=['negative', 'smoke'])
+    def test_show_non_existent_subnet(self):
+        non_exist_id = data_utils.rand_name('subnet')
+        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
+                          non_exist_id)
+
+    @attr(type=['negative', 'smoke'])
+    def test_show_non_existent_port(self):
+        non_exist_id = data_utils.rand_name('port')
+        self.assertRaises(exceptions.NotFound, self.client.show_port,
+                          non_exist_id)
+
+    @attr(type=['negative', 'smoke'])
+    def test_update_non_existent_network(self):
+        non_exist_id = data_utils.rand_name('network')
+        self.assertRaises(exceptions.NotFound, self.client.update_network,
+                          non_exist_id, "new_name")
+
+    @attr(type=['negative', 'smoke'])
+    def test_delete_non_existent_network(self):
+        non_exist_id = data_utils.rand_name('network')
+        self.assertRaises(exceptions.NotFound, self.client.delete_network,
+                          non_exist_id)
+
+
+class NetworksNegativeTestXML(NetworksNegativeTestJSON):
+    _interface = 'xml'