diff --git a/tempest/api/compute/servers/test_attach_interfaces.py b/tempest/api/compute/servers/test_attach_interfaces.py
index e0a1d77..0248c65 100644
--- a/tempest/api/compute/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/servers/test_attach_interfaces.py
@@ -103,7 +103,6 @@
                  ['interfaceAttachment'])
         iface = waiters.wait_for_interface_status(
             self.interfaces_client, server['id'], iface['port_id'], 'ACTIVE')
-        self._check_interface(iface)
         return iface
 
     def _test_create_interface_by_network_id(self, server, ifs):
@@ -190,7 +189,6 @@
         server, ifs = self._create_server_get_interfaces()
         interface_count = len(ifs)
         self.assertGreater(interface_count, 0)
-        self._check_interface(ifs[0])
 
         try:
             iface = self._test_create_interface(server)
@@ -228,7 +226,6 @@
         server, ifs = self._create_server_get_interfaces()
         interface_count = len(ifs)
         self.assertGreater(interface_count, 0)
-        self._check_interface(ifs[0])
         network_id = ifs[0]['net_id']
         self.servers_client.add_fixed_ip(server['id'], networkId=network_id)
         # Remove the fixed IP from server.
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 258795a..99ffaa8 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -132,33 +132,6 @@
         self.assertEqual(show_port_body['port']['device_id'],
                          router['id'])
 
-    def _verify_router_gateway(self, router_id, exp_ext_gw_info=None):
-        show_body = self.admin_routers_client.show_router(router_id)
-        actual_ext_gw_info = show_body['router']['external_gateway_info']
-        if exp_ext_gw_info is None:
-            self.assertIsNone(actual_ext_gw_info)
-            return
-        # Verify only keys passed in exp_ext_gw_info
-        for k, v in exp_ext_gw_info.items():
-            self.assertEqual(v, actual_ext_gw_info[k])
-
-    def _verify_gateway_port(self, router_id):
-        list_body = self.admin_ports_client.list_ports(
-            network_id=CONF.network.public_network_id,
-            device_id=router_id)
-        self.assertEqual(len(list_body['ports']), 1)
-        gw_port = list_body['ports'][0]
-        fixed_ips = gw_port['fixed_ips']
-        self.assertNotEmpty(fixed_ips)
-        # Assert that all of the IPs from the router gateway port
-        # are allocated from a valid public subnet.
-        public_net_body = self.admin_networks_client.show_network(
-            CONF.network.public_network_id)
-        public_subnet_ids = public_net_body['network']['subnets']
-        for fixed_ip in fixed_ips:
-            subnet_id = fixed_ip['subnet_id']
-            self.assertIn(subnet_id, public_subnet_ids)
-
     @decorators.idempotent_id('cbe42f84-04c2-11e7-8adb-fa163e4fa634')
     @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index 4cad52a..ae29049 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -22,15 +22,6 @@
 class VolumeTypesNegativeTest(base.BaseVolumeAdminTest):
 
     @decorators.attr(type=['negative'])
-    @decorators.idempotent_id('b48c98f2-e662-4885-9b71-032256906314')
-    def test_create_with_nonexistent_volume_type(self):
-        # Should not be able to create volume with nonexistent volume_type.
-        params = {'name': data_utils.rand_uuid(),
-                  'volume_type': data_utils.rand_uuid()}
-        self.assertRaises(lib_exc.NotFound,
-                          self.volumes_client.create_volume, **params)
-
-    @decorators.attr(type=['negative'])
     @decorators.idempotent_id('878b4e57-faa2-4659-b0d1-ce740a06ae81')
     def test_create_with_empty_name(self):
         # Should not be able to create volume type with an empty name.
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 7d745f2..f139283 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -35,7 +35,6 @@
 
         # Create a test shared instance and volume for attach/detach tests
         cls.volume = cls.create_volume()
-        cls.mountpoint = "/dev/vdc"
 
     def create_image(self):
         # Create image
@@ -176,7 +175,7 @@
                           self.volumes_client.attach_volume,
                           data_utils.rand_uuid(),
                           instance_uuid=server['id'],
-                          mountpoint=self.mountpoint)
+                          mountpoint="/dev/vdc")
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('9f9c24e4-011d-46b5-b992-952140ce237a')