diff --git a/neutron_taas_tempest_plugin/tests/scenario/manager.py b/neutron_taas_tempest_plugin/tests/scenario/manager.py
index 3d3af9b..d2799a1 100644
--- a/neutron_taas_tempest_plugin/tests/scenario/manager.py
+++ b/neutron_taas_tempest_plugin/tests/scenario/manager.py
@@ -284,7 +284,7 @@ class ScenarioTest(manager.ScenarioTest):
             raise
 
 
-class NetworkScenarioTest(ScenarioTest):
+class NetworkScenarioTest(manager.NetworkScenarioTest):
     """Base class for network scenario tests.
 
     This class provide helpers for network scenario tests, using the neutron
@@ -426,13 +426,6 @@ class NetworkScenarioTest(ScenarioTest):
                          % port_map)
         return port_map[0]
 
-    def _get_network_by_name(self, network_name):
-        net = self.os_admin.networks_client.list_networks(
-            name=network_name)['networks']
-        self.assertNotEqual(len(net), 0,
-                            "Unable to get network by name: %s" % network_name)
-        return net[0]
-
     def create_floating_ip(self, thing, external_network_id=None,
                            port_id=None, client=None):
         """Create a floating IP and associates to a resource/port on Neutron"""
@@ -464,14 +457,6 @@ class NetworkScenarioTest(ScenarioTest):
         self.assertEqual(port_id, floating_ip['port_id'])
         return floating_ip
 
-    def _disassociate_floating_ip(self, floating_ip):
-        """:param floating_ip: floating_ips_client.create_floatingip"""
-        kwargs = dict(port_id=None)
-        floating_ip = self.floating_ips_client.update_floatingip(
-            floating_ip['id'], **kwargs)['floatingip']
-        self.assertIsNone(floating_ip['port_id'])
-        return floating_ip
-
     def check_floating_ip_status(self, floating_ip, status):
         """Verifies floatingip reaches the given status
 
@@ -798,7 +783,7 @@ class NetworkScenarioTest(ScenarioTest):
             if not CONF.compute.fixed_network_name:
                 m = 'fixed_network_name must be specified in config'
                 raise lib_exc.InvalidConfiguration(m)
-            network = cls._get_network_by_name(
+            network = cls.get_network_by_name(
                 CONF.compute.fixed_network_name)
             router = None
             subnet = None