diff --git a/RO-VIM-openstack/osm_rovim_openstack/tests/test_vimconn_openstack.py b/RO-VIM-openstack/osm_rovim_openstack/tests/test_vimconn_openstack.py
index be60c36..98ecdfb 100644
--- a/RO-VIM-openstack/osm_rovim_openstack/tests/test_vimconn_openstack.py
+++ b/RO-VIM-openstack/osm_rovim_openstack/tests/test_vimconn_openstack.py
@@ -5474,6 +5474,7 @@
         for mocking in mocks:
             mocking.assert_not_called()
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5490,6 +5491,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, memory, vcpu exist, vim type is VIO,
         paired-threads, cores, threads do not exist in numa.
@@ -5501,8 +5503,6 @@
         extra_specs = {}
         expected_extra_specs = {
             "hw:numa_nodes": "2",
-            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-            "vmware:latency_sensitivity_level": "high",
             "hw:cpu_sockets": "2",
         }
         self.vimconn.vim_type = "VIO"
@@ -5510,6 +5510,7 @@
 
         self.assertEqual(mock_process_numa_memory.call_count, 2)
         self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        mock_process_vio_numa_nodes.assert_called_once_with(2, {"hw:numa_nodes": "2"})
         _call_mock_process_numa_memory = mock_process_numa_memory.call_args_list
         self.assertEqual(
             _call_mock_process_numa_memory[0].args,
@@ -5518,8 +5519,6 @@
                 0,
                 {
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5531,8 +5530,6 @@
                 {
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5544,8 +5541,6 @@
                 0,
                 {
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5557,8 +5552,6 @@
                 {
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5571,6 +5564,7 @@
             ]
         )
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5587,6 +5581,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, memory, vcpu exist, vim type is openstack,
         paired-threads, cores, threads do not exist in numa.
@@ -5648,6 +5643,7 @@
             ]
         )
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5664,6 +5660,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, paired-threads exist, vim type is openstack.
         vcpus calculation according to paired-threads in numa, there is extra_spec.
@@ -5705,6 +5702,7 @@
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5721,6 +5719,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, paired-threads exist, vim type is VIO.
         vcpus calculation according to paired-threads in numa, there is extra_spec.
@@ -5729,8 +5728,6 @@
         extra_specs = {"some-key": "some-value"}
         expected_extra_specs = {
             "hw:numa_nodes": "2",
-            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-            "vmware:latency_sensitivity_level": "high",
             "hw:cpu_sockets": "2",
             "hw:cpu_threads": "8",
             "some-key": "some-value",
@@ -5747,6 +5744,9 @@
         _call_mock_process_numa_paired_threads = (
             mock_process_numa_paired_threads.call_args_list
         )
+        mock_process_vio_numa_nodes.assert_called_once_with(
+            2, {"some-key": "some-value", "hw:numa_nodes": "2"}
+        )
         self.assertEqual(
             _call_mock_process_numa_paired_threads[0].args,
             (
@@ -5755,8 +5755,6 @@
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
                     "some-key": "some-value",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5768,13 +5766,12 @@
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
                     "some-key": "some-value",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5791,6 +5788,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, cores exist, vim type is openstack.
         vcpus calculation according to cores in numa.
@@ -5824,6 +5822,7 @@
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5840,6 +5839,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, id, cores exist, vim type is VIO.
         vcpus calculation according to cores in numa.
@@ -5850,8 +5850,6 @@
             "hw:cpu_cores": "3",
             "hw:cpu_sockets": "2",
             "hw:numa_nodes": "2",
-            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-            "vmware:latency_sensitivity_level": "high",
         }
         self.vimconn.vim_type = "VIO"
         mock_process_numa_cores.side_effect = [1, 2]
@@ -5862,6 +5860,7 @@
         self.assertEqual(mock_process_numa_memory.call_count, 2)
         self.assertEqual(mock_process_numa_vcpu.call_count, 2)
         self.assertEqual(mock_process_numa_cores.call_count, 2)
+        mock_process_vio_numa_nodes.assert_called_once_with(2, {"hw:numa_nodes": "2"})
         _call_mock_process_numa_cores = mock_process_numa_cores.call_args_list
         self.assertEqual(
             _call_mock_process_numa_cores[0].args,
@@ -5870,8 +5869,6 @@
                 {
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
@@ -5882,13 +5879,12 @@
                 {
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5905,6 +5901,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, memory, vcpu, thread exist, vim type is VIO,
         vcpus calculation according threads in numa, there are not numa ids.
@@ -5916,8 +5913,6 @@
         extra_specs = {}
         expected_extra_specs = {
             "hw:numa_nodes": "2",
-            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-            "vmware:latency_sensitivity_level": "high",
             "hw:cpu_sockets": "2",
             "hw:cpu_threads": "3",
         }
@@ -5932,6 +5927,7 @@
                 mock_process_numa_paired_threads,
             ]
         )
+        mock_process_vio_numa_nodes.assert_called_once_with(2, {"hw:numa_nodes": "2"})
         self.assertEqual(mock_process_numa_threads.call_count, 1)
         _call_mock_process_numa_threads = mock_process_numa_threads.call_args_list
         self.assertEqual(
@@ -5941,13 +5937,12 @@
                 {
                     "hw:cpu_sockets": "2",
                     "hw:numa_nodes": "2",
-                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-                    "vmware:latency_sensitivity_level": "high",
                 },
             ),
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -5964,6 +5959,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Process numa parameters, memory, vcpu, thread exist, vim type is openstack,
         vcpus calculation according threads in numa, there are not numa ids.
@@ -5988,6 +5984,7 @@
                 mock_process_numa_vcpu,
                 mock_process_numa_cores,
                 mock_process_numa_paired_threads,
+                mock_process_vio_numa_nodes,
             ]
         )
         self.assertEqual(mock_process_numa_threads.call_count, 1)
@@ -6001,6 +5998,7 @@
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -6017,15 +6015,12 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Numa list is empty, vim type is VIO."""
         numas = []
         extra_specs = {}
-        expected_extra_specs = {
-            "hw:numa_nodes": "0",
-            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
-            "vmware:latency_sensitivity_level": "high",
-        }
+        expected_extra_specs = {"hw:numa_nodes": "0"}
         self.vimconn.vim_type = "VIO"
         self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
         self.check_if_assert_not_called(
@@ -6037,8 +6032,10 @@
                 mock_process_numa_threads,
             ]
         )
+        mock_process_vio_numa_nodes.assert_called_once_with(0, {"hw:numa_nodes": "0"})
         self.assertDictEqual(extra_specs, expected_extra_specs)
 
+    @patch.object(vimconnector, "process_vio_numa_nodes", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
     @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
     @patch.object(
@@ -6055,6 +6052,7 @@
         mock_process_numa_paired_threads,
         mock_process_numa_vcpu,
         mock_process_numa_memory,
+        mock_process_vio_numa_nodes,
     ):
         """Numa list is empty, vim type is openstack."""
         numas = []
@@ -6071,6 +6069,7 @@
                 mock_process_numa_cores,
                 mock_process_numa_paired_threads,
                 mock_process_numa_threads,
+                mock_process_vio_numa_nodes,
             ]
         )
         self.assertDictEqual(extra_specs, expected_extra_specs)
@@ -7289,6 +7288,53 @@
         )
         self.assertEqual(mock_format_exception.call_count, 1)
 
+    def test_process_process_vio_numa_nodes_without_numa_with_extra_spec(self):
+        numa_nodes = 0
+        extra_specs = {"hw:numa_nodes": "0"}
+        expected_extra_spec = {
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+            "hw:numa_nodes": "0",
+        }
+        self.vimconn.process_vio_numa_nodes(numa_nodes, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_process_vio_numa_nodes_list_type_numa_nodes_empty_extra_spec(self):
+        numa_nodes = [7, 9, 4]
+        extra_specs = {}
+        expected_extra_spec = {
+            "vmware:latency_sensitivity_level": "high",
+        }
+        self.vimconn.process_vio_numa_nodes(numa_nodes, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_process_vio_numa_nodes_with_numa_with_extra_spec(self):
+        numa_nodes = 5
+        extra_specs = {"hw:numa_nodes": "5"}
+        expected_extra_spec = {
+            "vmware:latency_sensitivity_level": "high",
+            "hw:numa_nodes": "5",
+        }
+        self.vimconn.process_vio_numa_nodes(numa_nodes, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_process_vio_numa_nodes_none_numa_nodes(self):
+        numa_nodes = None
+        extra_specs = {"hw:numa_nodes": "None"}
+        expected_extra_spec = {
+            "vmware:latency_sensitivity_level": "high",
+            "hw:numa_nodes": "None",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+        }
+        self.vimconn.process_vio_numa_nodes(numa_nodes, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_process_vio_numa_nodes_invalid_type_extra_specs(self):
+        numa_nodes = 5
+        extra_specs = []
+        with self.assertRaises(TypeError):
+            self.vimconn.process_vio_numa_nodes(numa_nodes, extra_specs)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
index 8e9d439..1fa9954 100644
--- a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
+++ b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
@@ -1353,8 +1353,7 @@
         cpu_cores, cpu_threads = 0, 0
 
         if self.vim_type == "VIO":
-            extra_specs["vmware:extra_config"] = '{"numa.nodeAffinity":"0"}'
-            extra_specs["vmware:latency_sensitivity_level"] = "high"
+            self.process_vio_numa_nodes(numa_nodes, extra_specs)
 
         for numa in numas:
             if "id" in numa:
@@ -1384,6 +1383,23 @@
         if cpu_threads:
             extra_specs["hw:cpu_threads"] = str(cpu_threads)
 
+    @staticmethod
+    def process_vio_numa_nodes(numa_nodes: int, extra_specs: Dict) -> None:
+        """According to number of numa nodes, updates the extra_specs for VIO.
+
+        Args:
+
+            numa_nodes      (int):         List keeps the numa node numbers
+            extra_specs     (dict):        Extra specs dict to be updated
+
+        """
+        # If there is not any numa, numas_nodes equals to 0.
+        if not numa_nodes:
+            extra_specs["vmware:extra_config"] = '{"numa.nodeAffinity":"0"}'
+
+        # If there are several numas, we do not define specific affinity.
+        extra_specs["vmware:latency_sensitivity_level"] = "high"
+
     def _change_flavor_name(
         self, name: str, name_suffix: int, flavor_data: dict
     ) -> str: