diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index ff860d5..a650a75 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -946,6 +946,16 @@
         return self.create_volume(name=vol_name, imageRef=img_uuid)
 
 
+class ScenarioTestWithNetwork(ScenarioTest):
+    """Base class for tests with default network"""
+
+    @classmethod
+    def setup_credentials(cls):
+        cls.set_network_resources(network=True, subnet=True,
+                                  dhcp=True, router=True)
+        super(ScenarioTestWithNetwork, cls).setup_credentials()
+
+
 class NetworkScenarioTest(ScenarioTest):
     """Base class for network scenario tests.
 
@@ -1484,7 +1494,8 @@
         return network, subnet, router
 
 
-class EncryptionScenarioTest(ScenarioTest):
+class EncryptionScenarioTest(ScenarioTestWithNetwork):
+
     """Base class for encryption scenario tests"""
 
     credentials = ['primary', 'admin']
diff --git a/tempest/scenario/test_server_basic_ops.py b/tempest/scenario/test_server_basic_ops.py
index 02bc692..0d0959d 100644
--- a/tempest/scenario/test_server_basic_ops.py
+++ b/tempest/scenario/test_server_basic_ops.py
@@ -27,7 +27,7 @@
 CONF = config.CONF
 
 
-class TestServerBasicOps(manager.ScenarioTest):
+class TestServerBasicOps(manager.ScenarioTestWithNetwork):
 
     """The test suite for server basic operations
 
diff --git a/tempest/scenario/test_volume_backup_restore.py b/tempest/scenario/test_volume_backup_restore.py
index 8a8c54e..58fdf6f 100644
--- a/tempest/scenario/test_volume_backup_restore.py
+++ b/tempest/scenario/test_volume_backup_restore.py
@@ -22,7 +22,7 @@
 CONF = config.CONF
 
 
-class TestVolumeBackupRestore(manager.ScenarioTest):
+class TestVolumeBackupRestore(manager.ScenarioTestWithNetwork):
     """Test cinder backup and restore
 
     This testcase verifies content preservation after backup and restore