61 files changed, 1205 insertions, 1839 deletions

diff --git a/ansible/ubuntu_server_cloudimg_modify.yml b/ansible/ubuntu_server_cloudimg_modify.yml
index 950655ec8..099d5803f 100644
--- a/ansible/ubuntu_server_cloudimg_modify.yml
+++ b/ansible/ubuntu_server_cloudimg_modify.yml
@@ -25,6 +25,8 @@
     - reset_resolv_conf
     - add_custom_repos
     - modify_cloud_config
+    - role: set_package_installer_proxy
+      when: proxy_env is defined and proxy_env
     - install_image_dependencies
     - download_unixbench
     - install_unixbench
diff --git a/ansible/ubuntu_server_cloudimg_modify_dpdk.yml b/ansible/ubuntu_server_cloudimg_modify_dpdk.yml
index 2a087ce91..6bbb383d8 100644
--- a/ansible/ubuntu_server_cloudimg_modify_dpdk.yml
+++ b/ansible/ubuntu_server_cloudimg_modify_dpdk.yml
@@ -25,6 +25,8 @@
     - add_custom_repos
     - enable_hugepages_on_boot
     - modify_cloud_config
+    - role: set_package_installer_proxy
+      when: proxy_env is defined and proxy_env
     - install_image_dependencies
     - download_unixbench
     - install_unixbench
diff --git a/api/database/v2/handlers.py b/api/database/v2/handlers.py
index 1bc32bf0e..e4f1dd668 100644
--- a/api/database/v2/handlers.py
+++ b/api/database/v2/handlers.py
@@ -87,6 +87,11 @@ class V2ImageHandler(object):
             raise ValueError
         return image
 
+    def delete_by_uuid(self, uuid):
+        image = self.get_by_uuid(uuid)
+        db_session.delete(image)
+        db_session.commit()
+
 
 class V2PodHandler(object):
 
diff --git a/api/database/v2/models.py b/api/database/v2/models.py
index 1e85559cb..59dab3ebc 100644
--- a/api/database/v2/models.py
+++ b/api/database/v2/models.py
@@ -48,9 +48,6 @@ class V2Image(Base):
     name = Column(String(30))
     description = Column(Text)
     environment_id = Column(String(30))
-    size = Column(String(30))
-    status = Column(String(30))
-    time = Column(DateTime)
 
 
 class V2Container(Base):
diff --git a/api/resources/v2/environments.py b/api/resources/v2/environments.py
index f021a3c5a..158e98be7 100644
--- a/api/resources/v2/environments.py
+++ b/api/resources/v2/environments.py
@@ -35,6 +35,9 @@ class V2Environments(ApiResource):
             container_info = e['container_id']
             e['container_id'] = jsonutils.loads(container_info) if container_info else {}
 
+            image_id = e['image_id']
+            e['image_id'] = image_id.split(',') if image_id else []
+
         data = {
             'environments': environments
         }
@@ -78,8 +81,13 @@ class V2Environment(ApiResource):
             return result_handler(consts.API_ERROR, 'no such environment id')
 
         environment = change_obj_to_dict(environment)
+
         container_id = environment['container_id']
         environment['container_id'] = jsonutils.loads(container_id) if container_id else {}
+
+        image_id = environment['image_id']
+        environment['image_id'] = image_id.split(',') if image_id else []
+
         return result_handler(consts.API_SUCCESS, {'environment': environment})
 
     def delete(self, environment_id):
diff --git a/api/resources/v2/images.py b/api/resources/v2/images.py
index 8359e105b..0c36a0a26 100644
--- a/api/resources/v2/images.py
+++ b/api/resources/v2/images.py
@@ -7,76 +7,361 @@
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
 import logging
-import subprocess
+import os
+import uuid
 import threading
+import requests
+import datetime
 
 from api import ApiResource
+from api.database.v2.handlers import V2ImageHandler
+from api.database.v2.handlers import V2EnvironmentHandler
 from yardstick.common.utils import result_handler
 from yardstick.common.utils import source_env
 from yardstick.common.utils import change_obj_to_dict
 from yardstick.common.openstack_utils import get_nova_client
+from yardstick.common.openstack_utils import get_glance_client
 from yardstick.common import constants as consts
 
 LOG = logging.getLogger(__name__)
 LOG.setLevel(logging.DEBUG)
 
+IMAGE_MAP = {
+    'yardstick-image': {
+        'path': os.path.join(consts.IMAGE_DIR, 'yardstick-image.img'),
+        'url': 'http://artifacts.opnfv.org/yardstick/images/yardstick-image.img'
+    },
+    'Ubuntu-16.04': {
+        'path': os.path.join(consts.IMAGE_DIR, 'xenial-server-cloudimg-amd64-disk1.img'),
+        'url': 'cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img'
+    },
+    'cirros-0.3.5': {
+        'path': os.path.join(consts.IMAGE_DIR, 'cirros-0.3.5-x86_64-disk.img'),
+        'url': 'http://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img'
+    }
+}
+
 
 class V2Images(ApiResource):
 
     def get(self):
         try:
             source_env(consts.OPENRC)
-        except:
+        except Exception:
             return result_handler(consts.API_ERROR, 'source openrc error')
 
         nova_client = get_nova_client()
         try:
             images_list = nova_client.images.list()
-        except:
+        except Exception:
             return result_handler(consts.API_ERROR, 'get images error')
         else:
-            images = [self.get_info(change_obj_to_dict(i)) for i in images_list]
-            status = 1 if all(i['status'] == 'ACTIVE' for i in images) else 0
-            if not images:
-                status = 0
+            images = {i.name: self.get_info(change_obj_to_dict(i)) for i in images_list}
 
-        return result_handler(consts.API_SUCCESS, {'status': status, 'images': images})
+        return result_handler(consts.API_SUCCESS, {'status': 1, 'images': images})
 
     def post(self):
         return self._dispatch_post()
 
     def get_info(self, data):
+        try:
+            size = data['OS-EXT-IMG-SIZE:size']
+        except KeyError:
+            size = None
+        else:
+            size = float(size) / 1024 / 1024
+
         result = {
             'name': data.get('name', ''),
-            'size': data.get('OS-EXT-IMG-SIZE:size', ''),
-            'status': data.get('status', ''),
-            'time': data.get('updated', '')
+            'discription': data.get('description', ''),
+            'size': size,
+            'status': data.get('status'),
+            'time': data.get('updated')
         }
         return result
 
     def load_image(self, args):
-        thread = threading.Thread(target=self._load_images)
+        try:
+            image_name = args['name']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'image name must provided')
+
+        if image_name not in IMAGE_MAP:
+            return result_handler(consts.API_ERROR, 'wrong image name')
+
+        thread = threading.Thread(target=self._do_load_image, args=(image_name,))
         thread.start()
+        return result_handler(consts.API_SUCCESS, {'image': image_name})
+
+    def upload_image(self, args):
+        try:
+            image_file = args['file']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'file must be provided')
+
+        try:
+            environment_id = args['environment_id']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'environment_id must be provided')
+
+        try:
+            uuid.UUID(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid environment id')
+
+        environment_handler = V2EnvironmentHandler()
+        try:
+            environment = environment_handler.get_by_uuid(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such environment')
+
+        file_path = os.path.join(consts.IMAGE_DIR, image_file.filename)
+        LOG.info('saving file')
+        image_file.save(file_path)
+
+        LOG.info('loading image')
+        self._load_image(image_file.filename, file_path)
+
+        LOG.info('creating image in DB')
+        image_handler = V2ImageHandler()
+        image_id = str(uuid.uuid4())
+        image_init_data = {
+            'uuid': image_id,
+            'name': image_file.filename,
+            'environment_id': environment_id
+        }
+        image_handler.insert(image_init_data)
+
+        LOG.info('update image in environment')
+        if environment.image_id:
+            image_list = environment.image_id.split(',')
+            image_list.append(image_id)
+            new_image_id = ','.join(image_list)
+        else:
+            new_image_id = image_id
+
+        environment_handler.update_attr(environment_id, {'image_id': new_image_id})
+
+        return result_handler(consts.API_SUCCESS, {'uuid': image_id})
+
+    def upload_image_by_url(self, args):
+        try:
+            url = args['url']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'url must be provided')
+
+        try:
+            environment_id = args['environment_id']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'environment_id must be provided')
+
+        try:
+            uuid.UUID(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid environment id')
+
+        environment_handler = V2EnvironmentHandler()
+        try:
+            environment = environment_handler.get_by_uuid(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such environment')
+
+        thread = threading.Thread(target=self._do_upload_image_by_url, args=(url,))
+        thread.start()
+
+        file_name = url.split('/')[-1]
+
+        LOG.info('creating image in DB')
+        image_handler = V2ImageHandler()
+        image_id = str(uuid.uuid4())
+        image_init_data = {
+            'uuid': image_id,
+            'name': file_name,
+            'environment_id': environment_id
+        }
+        image_handler.insert(image_init_data)
+
+        LOG.info('update image in environment')
+        if environment.image_id:
+            image_list = environment.image_id.split(',')
+            image_list.append(image_id)
+            new_image_id = ','.join(image_list)
+        else:
+            new_image_id = image_id
+
+        environment_handler.update_attr(environment_id, {'image_id': new_image_id})
+
+        return result_handler(consts.API_SUCCESS, {'uuid': image_id})
+
+    def delete_image(self, args):
+        try:
+            image_name = args['name']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'image name must provided')
+
+        if image_name not in IMAGE_MAP:
+            return result_handler(consts.API_ERROR, 'wrong image name')
+
+        glance_client = get_glance_client()
+        try:
+            image = next((i for i in glance_client.images.list() if i.name == image_name))
+        except StopIteration:
+            return result_handler(consts.API_ERROR, 'can not find image')
+
+        glance_client.images.delete(image.id)
+
         return result_handler(consts.API_SUCCESS, {})
 
-    def _load_images(self):
+    def _do_upload_image_by_url(self, url):
+        file_name = url.split('/')[-1]
+        path = os.path.join(consts.IMAGE_DIR, file_name)
+
+        LOG.info('download image')
+        self._download_image(url, path)
+
+        LOG.info('loading image')
+        self._load_image(file_name, path)
+
+    def _do_load_image(self, image_name):
+        if not os.path.exists(IMAGE_MAP[image_name]['path']):
+            self._download_image(IMAGE_MAP[image_name]['url'],
+                                 IMAGE_MAP[image_name]['path'])
+
+        self._load_image(image_name, IMAGE_MAP[image_name]['path'])
+
+    def _load_image(self, image_name, image_path):
         LOG.info('source openrc')
         source_env(consts.OPENRC)
 
-        LOG.info('clean images')
-        cmd = [consts.CLEAN_IMAGES_SCRIPT]
-        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
-                             cwd=consts.REPOS_DIR)
-        _, err = p.communicate()
-        if p.returncode != 0:
-            LOG.error('clean image failed: %s', err)
-
-        LOG.info('load images')
-        cmd = [consts.LOAD_IMAGES_SCRIPT]
-        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
-                             cwd=consts.REPOS_DIR)
-        _, err = p.communicate()
-        if p.returncode != 0:
-            LOG.error('load image failed: %s', err)
+        LOG.info('load image')
+        glance_client = get_glance_client()
+        image = glance_client.images.create(name=image_name,
+                                            visibility='public',
+                                            disk_format='qcow2',
+                                            container_format='bare')
+        with open(image_path, 'rb') as f:
+            glance_client.images.upload(image.id, f)
 
         LOG.info('Done')
+
+    def _download_image(self, url, path):
+        start = datetime.datetime.now().replace(microsecond=0)
+
+        LOG.info('download image from: %s', url)
+        self._download_file(url, path)
+
+        end = datetime.datetime.now().replace(microsecond=0)
+        LOG.info('download image success, total: %s s', end - start)
+
+    def _download_handler(self, start, end, url, filename):
+
+        headers = {'Range': 'bytes=%d-%d' % (start, end)}
+        r = requests.get(url, headers=headers, stream=True)
+
+        with open(filename, "r+b") as fp:
+            fp.seek(start)
+            fp.tell()
+            fp.write(r.content)
+
+    def _download_file(self, url, path, num_thread=5):
+
+        r = requests.head(url)
+        try:
+            file_size = int(r.headers['content-length'])
+        except Exception:
+            return
+
+        with open(path, 'wb') as f:
+            f.truncate(file_size)
+
+        thread_list = []
+        part = file_size // num_thread
+        for i in range(num_thread):
+            start = part * i
+            end = start + part if i != num_thread - 1 else file_size
+
+            kwargs = {'start': start, 'end': end, 'url': url, 'filename': path}
+            t = threading.Thread(target=self._download_handler, kwargs=kwargs)
+            t.setDaemon(True)
+            t.start()
+            thread_list.append(t)
+
+        for t in thread_list:
+            t.join()
+
+
+class V2Image(ApiResource):
+    def get(self, image_id):
+        try:
+            uuid.UUID(image_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid image id')
+
+        image_handler = V2ImageHandler()
+        try:
+            image = image_handler.get_by_uuid(image_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such image id')
+
+        nova_client = get_nova_client()
+        images = nova_client.images.list()
+        try:
+            image = next((i for i in images if i.name == image.name))
+        except StopIteration:
+            pass
+
+        return_image = self.get_info(change_obj_to_dict(image))
+        return_image['id'] = image_id
+
+        return result_handler(consts.API_SUCCESS, {'image': return_image})
+
+    def delete(self, image_id):
+        try:
+            uuid.UUID(image_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid image id')
+
+        image_handler = V2ImageHandler()
+        try:
+            image = image_handler.get_by_uuid(image_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such image id')
+
+        LOG.info('delete image in openstack')
+        glance_client = get_glance_client()
+        try:
+            image_o = next((i for i in glance_client.images.list() if i.name == image.name))
+        except StopIteration:
+            return result_handler(consts.API_ERROR, 'can not find image')
+
+        glance_client.images.delete(image_o.id)
+
+        LOG.info('delete image in environment')
+        environment_id = image.environment_id
+        environment_handler = V2EnvironmentHandler()
+        environment = environment_handler.get_by_uuid(environment_id)
+        image_list = environment.image_id.split(',')
+        image_list.remove(image_id)
+        environment_handler.update_attr(environment_id, {'image_id': ','.join(image_list)})
+
+        LOG.info('delete image in DB')
+        image_handler.delete_by_uuid(image_id)
+
+        return result_handler(consts.API_SUCCESS, {'image': image_id})
+
+    def get_info(self, data):
+        try:
+            size = data['OS-EXT-IMG-SIZE:size']
+        except KeyError:
+            size = None
+        else:
+            size = float(size) / 1024 / 1024
+
+        result = {
+            'name': data.get('name', ''),
+            'description': data.get('description', ''),
+            'size': size,
+            'status': data.get('status'),
+            'time': data.get('updated')
+        }
+        return result
diff --git a/api/server.py b/api/server.py
index 158b8a508..37a1ab6a6 100644
--- a/api/server.py
+++ b/api/server.py
@@ -35,6 +35,7 @@ except ImportError:
 LOG = logging.getLogger(__name__)
 
 app = Flask(__name__)
+app.config['MAX_CONTENT_LENGTH'] = 2 * 1024 * 1024 * 1024
 
 Swagger(app)
 
diff --git a/api/urls.py b/api/urls.py
index 83cf4daf9..9b0040b6c 100644
--- a/api/urls.py
+++ b/api/urls.py
@@ -36,6 +36,7 @@ urlpatterns = [
 
     Url('/api/v2/yardstick/images', 'v2_images'),
     Url('/api/v2/yardstick/images/action', 'v2_images'),
+    Url('/api/v2/yardstick/images/<image_id>', 'v2_image'),
 
     Url('/api/v2/yardstick/containers', 'v2_containers'),
     Url('/api/v2/yardstick/containers/action', 'v2_containers'),
diff --git a/docker/nginx.sh b/docker/nginx.sh
index 74009f5bd..1ac1d3f42 100755
--- a/docker/nginx.sh
+++ b/docker/nginx.sh
@@ -20,6 +20,7 @@ server {
     index  index.htm index.html;
     location / {
         include uwsgi_params;
+        client_max_body_size    2000m;
         uwsgi_pass unix:///var/run/yardstick.sock;
     }
 
diff --git a/docs/testing/user/userguide/14-nsb_installation.rst b/docs/testing/user/userguide/14-nsb_installation.rst
index 3eb17bbca..7c5327964 100644
--- a/docs/testing/user/userguide/14-nsb_installation.rst
+++ b/docs/testing/user/userguide/14-nsb_installation.rst
@@ -103,7 +103,7 @@ Config yardstick conf
     cp ./etc/yardstick/yardstick.conf.sample /etc/yardstick/yardstick.conf
     vi /etc/yardstick/yardstick.conf
 
-Add trex_path and bin_path in 'nsb' section.
+Add trex_path, trex_client_lib and bin_path in 'nsb' section.
 
 ::
 
@@ -121,6 +121,7 @@ Add trex_path and bin_path in 'nsb' section.
   [nsb]
   trex_path=/opt/nsb_bin/trex/scripts
   bin_path=/opt/nsb_bin
+  trex_client_lib=/opt/nsb_bin/trex_client/stl
 
 
 Config pod.yaml describing Topology
diff --git a/etc/yardstick/yardstick.conf.sample b/etc/yardstick/yardstick.conf.sample
index 227aded2d..5675cc3bd 100644
--- a/etc/yardstick/yardstick.conf.sample
+++ b/etc/yardstick/yardstick.conf.sample
@@ -31,3 +31,4 @@ password = root
 [nsb]
 trex_path=/opt/nsb_bin/trex/scripts
 bin_path=/opt/nsb_bin
+trex_client_lib=/opt/nsb_bin/trex_client/stl
diff --git a/gui/app/scripts/controllers/image.controller.js b/gui/app/scripts/controllers/image.controller.js
index f6c91592f..d7a7edfa9 100644
--- a/gui/app/scripts/controllers/image.controller.js
+++ b/gui/app/scripts/controllers/image.controller.js
@@ -1,150 +1,235 @@
 'use strict';
 
 angular.module('yardStickGui2App')
-    .controller('ImageController', ['$scope', '$state', '$stateParams', 'mainFactory', 'Upload', 'toaster', '$location', '$interval',
-        function($scope, $state, $stateParams, mainFactory, Upload, toaster, $location, $interval) {
+    .controller('ImageController', ['$scope', '$state', '$stateParams', 'mainFactory', 'Upload', 'toaster', '$location', '$interval', 'ngDialog',
+        function($scope, $state, $stateParams, mainFactory, Upload, toaster, $location, $interval, ngDialog) {
 
 
             init();
-            $scope.showloading = false;
-            $scope.ifshowStatus = 0;
 
             function init() {
+                $scope.showloading = false;
+                $scope.ifshowStatus = 0;
+
+                $scope.yardstickImage = [
+                    {
+                        'name': 'yardstick-image',
+                        'description': '',
+                        'size': 'N/A',
+                        'status': 'N/A',
+                        'time': 'N/A'
+                    },
+                    {
+                        'name': 'Ubuntu-16.04',
+                        'description': '',
+                        'size': 'N/A',
+                        'status': 'N/A',
+                        'time': 'N/A'
+                    },
+                    {
+                        'name': 'cirros-0.3.5',
+                        'description': '',
+                        'size': 'N/A',
+                        'status': 'N/A',
+                        'time': 'N/A'
+                    }
+                ];
+                $scope.customImage = [];
 
 
                 $scope.uuid = $stateParams.uuid;
-                $scope.uploadImage = uploadImage;
-                getItemIdDetail();
-                getImageListSimple();
+                $scope.showloading = false;
+                $scope.url = null;
+                $scope.environmentInfo = null;
+
+                getYardstickImageList();
+                getCustomImageList(function(image, image_id){});
             }
 
-            function getItemIdDetail() {
+            function getYardstickImageList(){
+                mainFactory.ImageList().get({}).$promise.then(function(response){
+                    if(response.status == 1){
+                        angular.forEach($scope.yardstickImage, function(ele, index){
+                            if(typeof(response.result.images[ele.name]) != 'undefined'){
+                                $scope.yardstickImage[index] = response.result.images[ele.name];
+                            }
+                        });
+                    }else{
+                        mainFactory.errorHandler1(response);
+                    }
+                }, function(response){
+                    mainFactory.errorHandler2(response);
+                });
+            }
+
+            function getCustomImageList(func){
                 mainFactory.ItemDetail().get({
                     'envId': $stateParams.uuid
                 }).$promise.then(function(response) {
-                    if (response.status == 1) {
-                        $scope.baseElementInfo = response.result.environment;
-
-
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'fail',
-                            body: response.error_msg,
-                            timeout: 3000
+                    if(response.status == 1){
+                        $scope.environmentInfo = response.result.environment;
+                        $scope.customImage = [];
+                        angular.forEach(response.result.environment.image_id, function(ele){
+                            mainFactory.getImage().get({'imageId': ele}).$promise.then(function(responseData){
+                                if(responseData.status == 1){
+                                    $scope.customImage.push(responseData.result.image);
+                                    func(responseData.result.image, ele);
+                                }else{
+                                    mainFactory.errorHandler1(responseData);
+                                }
+                            }, function(errorData){
+                                mainFactory.errorHandler2(errorData);
+                            });
                         });
+                    }else{
+                        mainFactory.errorHandler1(response);
                     }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'fail',
-                        body: 'unknow error',
-                        timeout: 3000
-                    });
-                })
+                }, function(response){
+                    mainFactory.errorHandler2(response);
+                });
             }
 
-            function getImageListSimple() {
-
-                mainFactory.ImageList().get({}).$promise.then(function(response) {
-                    if (response.status == 1) {
-                        $scope.imageListData = response.result.images;
-                        // $scope.imageStatus = response.result.status;
-
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'get data failed',
-                            body: 'please retry',
-                            timeout: 3000
-                        });
-                    }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'get data failed',
-                        body: 'please retry',
-                        timeout: 3000
+            $scope.loadYardstickImage = function(image_name){
+
+                var updateImageTask = $interval(updateYardstickImage, 10000);
+
+                function updateYardstickImage(){
+                    mainFactory.ImageList().get({}).$promise.then(function(responseData){
+                        if(responseData.status == 1){
+                            if(typeof(responseData.result.images[image_name]) != 'undefined' && responseData.result.images[image_name].status == 'ACTIVE'){
+                                angular.forEach($scope.yardstickImage, function(ele, index){
+                                    if(ele.name == image_name){
+                                        $scope.yardstickImage[index] = responseData.result.images[ele.name];
+                                    }
+                                });
+                                $interval.cancel(updateImageTask);
+                            }
+                        }else{
+                            mainFactory.errorHandler1(responseData);
+                        }
+                    },function(errorData){
+                        mainFactory.errorHandler2(errorData);
                     });
-                })
-            }
+                }
 
+                mainFactory.uploadImage().post({'action': 'load_image', 'args': {'name': image_name}}).$promise.then(function(response){
+                },function(response){
+                    mainFactory.errorHandler2(response);
+                });
+            }
 
-            function getImageList() {
-                if ($scope.intervalImgae != undefined) {
-                    $interval.cancel($scope.intervalImgae);
-                }
-                mainFactory.ImageList().get({}).$promise.then(function(response) {
-                    if (response.status == 1) {
-                        $scope.imageListData = response.result.images;
-                        $scope.imageStatus = response.result.status;
-
-                        if ($scope.imageStatus == 0) {
-                            $scope.intervalImgae = $interval(function() {
-                                getImageList();
-                            }, 5000);
-                        } else if ($scope.intervalImgae != undefined) {
-                            $interval.cancel($scope.intervalImgae);
+            $scope.deleteYardstickImage = function(image_name){
+
+                var updateImageTask = $interval(updateYardstickImage, 10000);
+
+                function updateYardstickImage(){
+                    mainFactory.ImageList().get({}).$promise.then(function(response){
+                        if(response.status == 1){
+                            if(typeof(response.result.images[image_name]) == 'undefined'){
+                                angular.forEach($scope.yardstickImage, function(ele, index){
+                                    if(ele.name == image_name){
+                                        $scope.yardstickImage[index].size = 'N/A';
+                                        $scope.yardstickImage[index].status = 'N/A';
+                                        $scope.yardstickImage[index].time = 'N/A';
+                                    }
+                                });
+                                $interval.cancel(updateImageTask);
+                            }
+                        }else{
+                            mainFactory.errorHandler1(response);
                         }
+                    },function(response){
+                        mainFactory.errorHandler2(response);
+                    });
+                }
 
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'get data failed',
-                            body: 'please retry',
-                            timeout: 3000
+                mainFactory.uploadImage().post({'action': 'delete_image', 'args': {'name': image_name}}).$promise.then(function(response){
+                },function(response){
+                    mainFactory.errorHandler2(response);
+                });
+            }
+
+            $scope.uploadCustomImageByUrl = function(url){
+                mainFactory.uploadImageByUrl().post({
+                    'action': 'upload_image_by_url',
+                    'args': {
+                        'environment_id': $stateParams.uuid,
+                        'url': url
+                    }
+                }).$promise.then(function(response){
+                    if(response.status == 1){
+                        var updateImageTask = $interval(getCustomImageList, 30000, 10, true, function(image, image_id){
+                            if(image_id == response.result.uuid && image.status == 'ACTIVE'){
+                                $interval.cancel(updateImageTask);
+                            }
                         });
+                        ngDialog.close();
+                    }else{
+                        mainFactory.errorHandler1(response);
                     }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'get data failed',
-                        body: 'please retry',
-                        timeout: 3000
-                    });
-                })
+                }, function(response){
+                    mainFactory.errorHandler2(response);
+                });
             }
 
-            function uploadImage() {
-                $scope.imageStatus = 0;
-                $interval.cancel($scope.intervalImgae);
-                $scope.ifshowStatus = 1;
+            $scope.uploadCustomImage = function($file, $invalidFiles) {
                 $scope.showloading = true;
-                mainFactory.uploadImage().post({
-                    'action': 'load_image',
-                    'args': {
-                        'environment_id': $scope.uuid
 
-                    }
-                }).$promise.then(function(response) {
+                $scope.displayImageFile = $file;
+                Upload.upload({
+                    url: Base_URL + '/api/v2/yardstick/images',
+                    data: { file: $file, 'environment_id': $scope.uuid, 'action': 'upload_image' }
+                }).then(function(response) {
+
                     $scope.showloading = false;
-                    if (response.status == 1) {
+                    if (response.data.status == 1) {
+
                         toaster.pop({
                             type: 'success',
-                            title: 'create success',
+                            title: 'upload success',
                             body: 'you can go next step',
                             timeout: 3000
                         });
-                        setTimeout(function() {
-                            getImageList();
-                        }, 10000);
 
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'failed',
-                            body: 'something wrong',
-                            timeout: 3000
+                        var updateImageTask = $interval(getCustomImageList, 10000, 10, true, function(image, image_id){
+                            if(image_id == response.data.result.uuid && image.status == 'ACTIVE'){
+                                $interval.cancel(updateImageTask);
+                            }
                         });
+                    }else{
+                        mainFactory.errorHandler1(response);
+                    }
 
+                }, function(response) {
+                    $scope.uploadfile = null;
+                    mainFactory.errorHandler2(response);
+                })
+            }
+
+            $scope.deleteCustomImage = function(image_id){
+                mainFactory.deleteImage().delete({'imageId': image_id}).$promise.then(function(response){
+                    if(response.status == 1){
+                        $interval(getCustomImageList, 10000, 5, true, function(image, image_id){
+                        });
+                    }else{
+                        mainFactory.errorHandler2(response);
                     }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'failed',
-                        body: 'something wrong',
-                        timeout: 3000
-                    });
+                }, function(response){
+                    mainFactory.errorHandler2(response);
+                });
+            }
+
+            $scope.openImageDialog = function(){
+                $scope.url = null;
+                ngDialog.open({
+                    preCloseCallback: function(value) {
+                    },
+                    template: 'views/modal/imageDialog.html',
+                    scope: $scope,
+                    className: 'ngdialog-theme-default',
+                    width: 950,
+                    showClose: true,
+                    closeByDocument: false
                 })
             }
 
@@ -158,9 +243,5 @@ angular.module('yardStickGui2App')
                 $state.go('app.podUpload', { uuid: $scope.uuid });
             }
 
-
-
-
-
         }
     ]);
diff --git a/gui/app/scripts/controllers/main.js b/gui/app/scripts/controllers/main.js
index ab76bf0f2..ceec83fa9 100644
--- a/gui/app/scripts/controllers/main.js
+++ b/gui/app/scripts/controllers/main.js
@@ -15,7 +15,7 @@ angular.module('yardStickGui2App')
             $scope.showImage = null;
             $scope.showContainer = null;
             $scope.showNextOpenRc = null;
-            $scope.showNextPod = null;
+            $scope.showNextPod = 1;
             $scope.displayContainerInfo = [];
             $scope.containerList = [{ value: 'create_influxdb', name: "InfluxDB" }, { value: 'create_grafana', name: "Grafana" }]
 
@@ -51,7 +51,6 @@ angular.module('yardStickGui2App')
                 $scope.chooseResult = chooseResult;
 
                 getEnvironmentList();
-                // getImageList();
 
             }
 
@@ -85,7 +84,7 @@ angular.module('yardStickGui2App')
             }
 
             $scope.goToImage = function goToImage() {
-                getImageListSimple();
+                getImageList();
                 $scope.showImage = 1;
             }
             $scope.goToPod = function goToPod() {
@@ -290,7 +289,7 @@ angular.module('yardStickGui2App')
                 $scope.showImage = null;
                 $scope.showContainer = null;
                 $scope.showNextOpenRc = null;
-                $scope.showNextPod = null;
+                $scope.showNextPod = 1;
                 $scope.displayContainerInfo = [];
 
                 $scope.displayPodFile = null;
@@ -308,7 +307,6 @@ angular.module('yardStickGui2App')
                 ngDialog.open({
                     preCloseCallback: function(value) {
                         getEnvironmentList();
-                        // getImageList();
                     },
                     template: 'views/modal/environmentDialog.html',
                     scope: $scope,
@@ -479,106 +477,97 @@ angular.module('yardStickGui2App')
                 })
             }
 
-            $scope.uploadImage = function uploadImage() {
-                $scope.imageStatus = 0;
-                $scope.showImageStatus = 1;
-                $scope.showloading = true;
-                mainFactory.uploadImage().post({
-                    'action': 'load_image',
-                    'args': {
-                        'environment_id': $scope.uuid
+            $scope.yardstickImage = {
+                'yardstick-image': {
+                    'name': 'yardstick-image',
+                    'description': '',
+                    'status': 'N/A'
+                },
+                'Ubuntu-16.04': {
+                    'name': 'Ubuntu-16.04',
+                    'description': '',
+                    'status': 'N/A'
+                },
+                'cirros-0.3.5': {
+                    'name': 'cirros-0.3.5',
+                    'description': '',
+                    'status': 'N/A'
+                }
+            };
 
-                    }
-                }).$promise.then(function(response) {
-                    $scope.showloading = false;
-                    if (response.status == 1) {
-                        toaster.pop({
-                            type: 'success',
-                            title: 'create success',
-                            body: 'you can go next step',
-                            timeout: 3000
-                        });
-                        setTimeout(function() {
-                            getImageList();
-                        }, 10000);
-                        $scope.showNextPod = 1;
+            $scope.selectImageList = [];
 
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'failed',
-                            body: 'something wrong',
-                            timeout: 3000
-                        });
+            $scope.selectImage = function(name){
+                $scope.selectImageList.push(name);
+            }
 
-                    }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'failed',
-                        body: 'something wrong',
-                        timeout: 3000
-                    });
-                })
+            $scope.unselectImage = function(name){
+                var index = $scope.selectImageList.indexOf(name);
+                $scope.selectImageList.splice(index, 1);
             }
 
-            function getImageList() {
-                if ($scope.intervalImgae != undefined) {
-                    $interval.cancel($scope.intervalImgae);
-                }
-                mainFactory.ImageList().get({}).$promise.then(function(response) {
-                    if (response.status == 1) {
-                        $scope.imageListData = response.result.images;
-                        $scope.imageStatus = response.result.status;
+            $scope.uploadImage = function() {
+                $scope.imageStatus = 0;
+                $scope.showImageStatus = 1;
+                $scope.showloading = true;
 
-                        if ($scope.imageStatus == 0) {
-                            $scope.intervalImgae = $interval(function() {
-                                getImageList();
-                            }, 5000);
-                        } else if ($scope.intervalImgae != undefined) {
-                            $interval.cancel($scope.intervalImgae);
+                var updateImageTask = $interval(function(){
+                    mainFactory.ImageList().get({}).$promise.then(function(response){
+                        if(response.status == 1){
+                            var isOk = true;
+                            angular.forEach($scope.selectImageList, function(ele){
+                                if(typeof(response.result.images[ele]) != 'undefined' && response.result.images[ele].status == 'ACTIVE'){
+                                    $scope.yardstickImage[ele] = response.result.images[ele];
+                                }else{
+                                    isOk = false;
+                                }
+                            });
+                            if(isOk){
+                                $interval.cancel(updateImageTask);
+                                $scope.imageStatus = 1;
+                            }
+                        }else{
+                            mainFactory.errorHandler1(response);
                         }
-
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'get data failed',
-                            body: 'please retry',
-                            timeout: 3000
-                        });
-                    }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'get data failed',
-                        body: 'please retry',
-                        timeout: 3000
+                    }, function(response){
+                        mainFactory.errorHandler2(response);
                     });
-                })
+                }, 10000);
+
+                angular.forEach($scope.selectImageList, function(ele){
+                    mainFactory.uploadImage().post({
+                        'action': 'load_image',
+                        'args': {
+                            'name': ele
+                        }
+                    }).$promise.then(function(response) {
+                        if(response.status == 1){
+                            $scope.showloading = false;
+                            $scope.showNextPod = 1;
+                        }else{
+                            mainFactory.errorHandler1(response);
+                        }
+                    }, function(response) {
+                        mainFactory.errorHandler2(response);
+                    })
+                });
             }
 
-            function getImageListSimple() {
+            function getImageList() {
 
                 mainFactory.ImageList().get({}).$promise.then(function(response) {
                     if (response.status == 1) {
-                        $scope.imageListData = response.result.images;
-                        $scope.imageStatus = response.result.status;
-
-                    } else {
-                        toaster.pop({
-                            type: 'error',
-                            title: 'get data failed',
-                            body: 'please retry',
-                            timeout: 3000
+                        angular.forEach($scope.yardstickImage, function(value, key){
+                            if(typeof(response.result.images[key]) != 'undefined'){
+                                $scope.yardstickImage[key] = response.result.images[key];
+                            }
                         });
+                        $scope.imageStatus = response.result.status;
+                    }else{
+                        mainFactory.errorHandler1(response);
                     }
-                }, function(error) {
-                    toaster.pop({
-                        type: 'error',
-                        title: 'get data failed',
-                        body: 'please retry',
-                        timeout: 3000
-                    });
+                }, function(response) {
+                    mainFactory.errorHandler2(response);
                 })
             }
 
diff --git a/gui/app/scripts/controllers/projectDetail.controller.js b/gui/app/scripts/controllers/projectDetail.controller.js
index 843f66c57..e8468045d 100644
--- a/gui/app/scripts/controllers/projectDetail.controller.js
+++ b/gui/app/scripts/controllers/projectDetail.controller.js
@@ -672,7 +672,7 @@ angular.module('yardStickGui2App')
             }
 
             $scope.gotoLog = function gotoLog(task_id) {
-                $state.go('app2.taskLog', { taskId: task_id });
+                $state.go('app.taskLog', { taskId: task_id });
             }
         }
     ]);
diff --git a/gui/app/scripts/factory/main.factory.js b/gui/app/scripts/factory/main.factory.js
index 44fbeb39f..7637a9ff3 100644
--- a/gui/app/scripts/factory/main.factory.js
+++ b/gui/app/scripts/factory/main.factory.js
@@ -9,7 +9,7 @@ var Base_URL;
 var Grafana_URL;
 
 angular.module('yardStickGui2App')
-    .factory('mainFactory', ['$resource','$rootScope','$http', '$location',function($resource, $rootScope,$http,$location) {
+    .factory('mainFactory', ['$resource','$rootScope','$http', '$location', 'toaster',function($resource, $rootScope ,$http ,$location, toaster) {
 
         Base_URL = 'http://' + $location.host() + ':' + $location.port();
         Grafana_URL = 'http://' + $location.host();
@@ -86,6 +86,20 @@ angular.module('yardStickGui2App')
                     }
                 })
             },
+            getImage: function(){
+                return $resource(Base_URL + '/api/v2/yardstick/images/:imageId', {imageId: "@imageId"}, {
+                    'get': {
+                        method: 'GET'
+                    }
+                })
+            },
+            deleteImage: function() {
+                return $resource(Base_URL + '/api/v2/yardstick/images/:imageId', { imageId: '@imageId' }, {
+                    'delete': {
+                        method: 'DELETE'
+                    }
+                })
+            },
             uploadImage: function() {
                 return $resource(Base_URL + '/api/v2/yardstick/images', {}, {
                     'post': {
@@ -93,6 +107,13 @@ angular.module('yardStickGui2App')
                     }
                 })
             },
+            uploadImageByUrl: function() {
+                return $resource(Base_URL + '/api/v2/yardstick/images', {}, {
+                    'post': {
+                        method: 'POST'
+                    }
+                })
+            },
             getPodDetail: function() {
                 return $resource(Base_URL + '/api/v2/yardstick/pods/:podId', { podId: "@podId" }, {
                     'get': {
@@ -249,6 +270,22 @@ angular.module('yardStickGui2App')
                         method: 'DELETE'
                     }
                 })
+            },
+            errorHandler1: function(response){
+                toaster.pop({
+                    'type': 'error',
+                    'title': 'error',
+                    'body': response.result,
+                    'showCloseButton': true
+                });
+            },
+            errorHandler2: function(response){
+                toaster.pop({
+                    'type': 'error',
+                    'title': response.status,
+                    'body': response.statusText,
+                    'showCloseButton': true
+                });
             }
 
         };
diff --git a/gui/app/views/modal/environmentDialog.html b/gui/app/views/modal/environmentDialog.html
index 389de8340..4c539fc33 100644
--- a/gui/app/views/modal/environmentDialog.html
+++ b/gui/app/views/modal/environmentDialog.html
@@ -133,16 +133,17 @@
                     <table class="table table-striped">
 
                         <tr>
+                            <th>choose</th>
                             <th>name</th>
-                            <th>size</th>
+                            <th>description</th>
                             <th>status</th>
-                            <th>time</th>
                         </tr>
-                        <tr ng-repeat="image in imageListData">
-                            <td>{{image.name}}</td>
-                            <td>{{image.size/1024}} mb</td>
-                            <td>{{image.status}}</td>
-                            <td>{{image.time}}</td>
+                        <tr ng-repeat="(name, value) in yardstickImage">
+                            <td ng-if="selectImageList.indexOf(name) > -1"><img src="images/checkyes.png" style="height:12px;cursor:pointer" ng-click="unselectImage(name)" /></td>
+                            <td ng-if="selectImageList.indexOf(name) == -1"><img src="images/checkno.png" style="height:12px;cursor:pointer" ng-click="selectImage(name)" /></td>
+                            <td>{{name}}</td>
+                            <td>{{value.description}}</td>
+                            <td>{{value.status}}</td>
 
                         </tr>
 
diff --git a/gui/app/views/modal/imageDialog.html b/gui/app/views/modal/imageDialog.html
new file mode 100644
index 000000000..c568f2aba
--- /dev/null
+++ b/gui/app/views/modal/imageDialog.html
@@ -0,0 +1,19 @@
+<div>
+
+    <h4>Enter Remote Image Url</h4>
+    <input type="text" ng-model="url" />
+
+    <div style="text-align:center;margin-top:20px;">
+        <button class="btn btn-default" ng-disabled=" url==null || url==''" ng-click="uploadCustomImageByUrl(url)">Upload</button>
+    </div>
+
+</div>
+
+
+<style>
+    input {
+        border-radius: 10px;
+        border: 1px solid #eeeeee;
+        width: 100%;
+    }
+</style>
diff --git a/gui/app/views/podupload.html b/gui/app/views/podupload.html
index 99e83aca2..d6d7c0c6e 100644
--- a/gui/app/views/podupload.html
+++ b/gui/app/views/podupload.html
@@ -13,7 +13,7 @@
 
             <hr/>
 
-            <button class="btn btn-default" ngf-select="uploadFiles($file, $invalidFiles)" ngf-max-size="5MB">
+            <button class="btn btn-default" ngf-select="uploadFiles($file, $invalidFiles)" ngf-max-size="1024MB">
                                     <div ng-show="!loadingOPENrc">Upload</div>
                                      <img src="images/loading2.gif" width="25" height="25" ng-if="loadingOPENrc" />
             </button>
diff --git a/gui/app/views/uploadImage.html b/gui/app/views/uploadImage.html
index 17ccfdb8b..0c337feeb 100644
--- a/gui/app/views/uploadImage.html
+++ b/gui/app/views/uploadImage.html
@@ -4,56 +4,86 @@
     <div style="display:flex;flex-direction:row;">
         <div style="width:750px;">
 
-            <h3>{{baseElementInfo.name}} -- Image
+            <h3>{{environmentInfo.name}} -- Image
                 <button class="btn btn-default" style="float:right" ng-click="goNext()">Next</button>
             </h3>
             <!--<p>In this process, you can input your define openrc config or upload a openrc file</p>-->
 
-            <hr/>
-            <button class="btn btn-default" ng-click="uploadImage()">
-                 <div ng-if="!showloading">Load Image</div>
-                 <img src="images/loading2.gif" width="25" height="25" ng-if="showloading" />
-            </button>
-            <i class="fa fa-check" aria-hidden="true" style="margin-top:34px;margin-left:5px;color: #2ecc71;" ng-show="imageStatus==1&&ifshowStatus==1">done</i>
-            <i class="fa fa-spinner" aria-hidden="true" style="margin-top:34px;margin-left:5px;color: #2ecc71;" ng-show="imageStatus==0&&ifshowStatus==1">loading</i>
-            <i class="fa fa-exclamation-triangle" aria-hidden="true" style="margin-top:34px;margin-left:5px;color: red;" ng-show="imageStatus==2&&ifshowStatus==1">error</i>
-
             <hr>
-            <h4>Current Images</h4>
-
+            <h4>Alternative Images</h4>
             <div>
                 <table class="table table-striped">
 
                     <tr>
                         <th>name</th>
+                        <th>description</th>
                         <th>size</th>
                         <th>status</th>
                         <th>time</th>
+                        <th>action</th>
                     </tr>
-                    <tr ng-repeat="image in imageListData">
+                    <tr ng-repeat="image in yardstickImage">
                         <td>{{image.name}}</td>
-                        <td>{{image.size/1024}} MB</td>
+                        <td>{{image.description}}</td>
+                        <td>{{image.size | number:2}} MB</td>
                         <td>{{image.status}}</td>
                         <td>{{image.time}}</td>
-
+                        <td>
+                            <div class="btn-group" uib-dropdown>
+                                <button id="single-button" type="button" class="btn btn-default btn-sm" uib-dropdown-toggle>
+                                    action<span class="caret"></span>
+                                </button>
+                                <ul class="dropdown-menu" uib-dropdown-menu role="menu" aria-labelledby="single-button">
+                                    <li role="menuitem" ng-show="image.status == 'N/A'"><a ng-click="loadYardstickImage(image.name)">load</a></li>
+                                    <li role="menuitem" ng-show="image.status != 'N/A'"><a ng-click="deleteYardstickImage(image.name)">delete</a></li>
+                                </ul>
+                            </div>
+                        </td>
                     </tr>
-
-
-
                 </table>
             </div>
 
+            <hr>
+            <h4 style="display:inline">Custom Images</h4>
+            <div class="btn-group button-margin" style="float:right;margin-top:-10px;margin-bottom:5px">
+                <button class="btn btn-default" style="width:60px" ngf-select="uploadCustomImage($file, $invalidFiles)" ngf-max-size="2048MB">
+                        <div ng-show="!showloading">Local</div>
+                        <img src="images/loading2.gif" width="25" height="25" ng-if="showloading" />
+                </button>
+                <button class="btn btn-default" style="width:60px" ng-click="openImageDialog()">Url</button>
+            </div>
+            <div>
+                <table class="table table-striped">
 
-
-
-
-
-
-
+                    <tr>
+                        <th>name</th>
+                        <th>description</th>
+                        <th>size</th>
+                        <th>status</th>
+                        <th>time</th>
+                        <th>action</th>
+                    </tr>
+                    <tr ng-repeat="image in customImage">
+                        <td>{{image.name}}</td>
+                        <td>{{image.description}}</td>
+                        <td>{{image.size | number:2}} MB</td>
+                        <td>{{image.status}}</td>
+                        <td>{{image.time}}</td>
+                        <td>
+                            <div class="btn-group" uib-dropdown>
+                                <button id="single-button" type="button" class="btn btn-default btn-sm" uib-dropdown-toggle>
+                                    action<span class="caret"></span>
+                                </button>
+                                <ul class="dropdown-menu" uib-dropdown-menu role="menu" aria-labelledby="single-button">
+                                    <li role="menuitem" ><a ng-click="deleteCustomImage(image.id)">delete</a></li>
+                                </ul>
+                            </div>
+                        </td>
+                    </tr>
+                </table>
+            </div>
 
         </div>
-
-
     </div>
 
 </div>
diff --git a/nsb_setup.sh b/nsb_setup.sh
index cc2542989..c11dc1038 100755
--- a/nsb_setup.sh
+++ b/nsb_setup.sh
@@ -83,7 +83,7 @@ install_trex()
 {
     TREX_DIR=$INSTALL_BIN_PATH/trex/scripts
     if [ -d "$TREX_DIR" ]; then
-        echo "Trex v2.20 already installed. Make sure it contains PYTHONPATH which is required to run TRex"
+        echo "Trex $TREX_VERSION already installed."
     else
         echo "Build TRex and installing Trex TG in $INSTALL_BIN_PATH/trex"
         rm -rf ${TREX_DOWNLOAD##*/}
@@ -99,9 +99,7 @@ install_trex()
         cd trex/scripts/ko/src/
         make
         make install
-        # workaround trex module issue
-        touch "$REPO_DIR/trex/scripts/automation/trex_control_plane/stl/__init__.py"
-        cp "$REPO_DIR/trex/scripts/dpdk_nic_bind.py" "$INSTALL_BIN_PATH"
+        ln -s $TREX_DIR/automation/trex_control_plane $INSTALL_BIN_PATH/trex_client
         popd
     fi
     echo "Done."
diff --git a/samples/vnf_samples/nsut/acl/tc_heat_rfc2544_ipv4_1rule_1flow_64B_packetsize.yaml b/samples/vnf_samples/nsut/acl/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml
index 355b67187..6fe826642 100644
--- a/samples/vnf_samples/nsut/acl/tc_heat_rfc2544_ipv4_1rule_1flow_64B_packetsize.yaml
+++ b/samples/vnf_samples/nsut/acl/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml
@@ -42,17 +42,16 @@ scenarios:
 context:
   # put node context first, so we don't HEAT deploy if node has errors
   name: yardstick
-  flavor: yardstick-dpdk-flavor
-#  flavor:
-#    name: yardstick-dpdk-flavor
-#    vcpus: 10
-#    ram: 20480
-#    disk: 4
-#    extra_specs:
-#      hw:cpu_sockets: 1
-#      hw:cpu_cores: 10
-#      hw:cpu_threads: 1
-#  #      hw:mem_page_size: large
+  image: yardstick-samplevnfs
+  flavor:
+    name: yardstick-dpdk-flavor
+    vcpus: 10
+    ram: 20480
+    disk: 4
+    extra_specs:
+      hw:cpu_sockets: 1
+      hw:cpu_cores: 10
+      hw:cpu_threads: 1
   user: ubuntu
   placement_groups:
     pgrp1:
@@ -69,17 +68,18 @@ context:
   networks:
     mgmt:
       cidr: '10.0.1.0/24'
-      external_network: "yardstick-public"
     xe0:
       cidr: '10.0.2.0/24'
-      vld_id: public
+      vld_id: public_1
+      gateway_ip: 'null'
 #      port_security_enabled: False
       allowed_address_pairs:
         - ip_address:
             '0.0.0.0/0'
     xe1:
       cidr: '10.0.3.0/24'
-      vld_id: private
+      vld_id: private_1
+      gateway_ip: 'null'
 #      port_security_enabled: False
       allowed_address_pairs:
         - ip_address:
diff --git a/samples/vnf_samples/nsut/cgnapt/tc_heat_rfc2544_ipv4_1flow_64B_trex.yaml b/samples/vnf_samples/nsut/cgnapt/tc_heat_rfc2544_ipv4_1flow_64B_trex.yaml
new file mode 100644
index 000000000..56d26be8b
--- /dev/null
+++ b/samples/vnf_samples/nsut/cgnapt/tc_heat_rfc2544_ipv4_1flow_64B_trex.yaml
@@ -0,0 +1,84 @@
+# Copyright (c) 2016-2017 Intel Corporation
+#
+# 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.
+
+---
+schema: yardstick:task:0.1
+scenarios:
+- type: NSPerf
+  traffic_profile: ../../traffic_profiles/ipv4_throughput_cgnapt.yaml
+  topology: cgnapt-vnf-topology.yaml
+  nodes:
+    tg__1: trafficgen_1.yardstick
+    vnf__1: vnf.yardstick
+  options:
+    framesize:
+      private: {64B: 100}
+      public: {64B: 100}
+    flow:
+      src_ip: [{'tg__1': 'xe0'}]
+      dst_ip: [{'tg__1': 'xe1'}]
+      count: 1
+    traffic_type: 4
+    rfc2544:
+      allowed_drop_rate: 0.0001 - 0.0001
+    vnf__1:
+      vnf_config: {lb_config: 'SW', lb_count: 1, worker_config: '1C/1T', worker_threads: 1}
+  runner:
+    type: Iteration
+    iterations: 10
+    interval: 35
+context:
+  # put node context first, so we don't HEAT deploy if node has errors
+  name: yardstick
+  image: yardstick-samplevnfs
+  flavor:
+    name: yardstick-dpdk-flavor
+    vcpus: 10
+    ram: 20480
+    disk: 4
+    extra_specs:
+      hw:cpu_sockets: 1
+      hw:cpu_cores: 10
+      hw:cpu_threads: 1
+  user: ubuntu
+  placement_groups:
+    pgrp1:
+      policy: "availability"
+  servers:
+    vnf:
+      floating_ip: true
+      placement: "pgrp1"
+    trafficgen_1:
+      floating_ip: true
+      placement: "pgrp1"
+  networks:
+    mgmt:
+      cidr: '10.0.1.0/24'
+    xe0:
+      cidr: '10.0.2.0/24'
+      vld_id: public_1
+      gateway_ip: 'null'
+#      port_security_enabled: False
+      allowed_address_pairs:
+        - ip_address:
+            '0.0.0.0/0'
+    xe1:
+      cidr: '10.0.3.0/24'
+      vld_id: private_1
+      gateway_ip: 'null'
+#      port_security_enabled: False
+      allowed_address_pairs:
+        - ip_address:
+            '0.0.0.0/0'
+
diff --git a/samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml b/samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml
new file mode 100644
index 000000000..2e7ef3d3f
--- /dev/null
+++ b/samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml
@@ -0,0 +1,85 @@
+# Copyright (c) 2016-2017 Intel Corporation
+#
+# 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.
+
+---
+schema: yardstick:task:0.1
+scenarios:
+- type: NSPerf
+  traffic_profile: ../../traffic_profiles/ipv4_throughput.yaml
+  topology: vfw-tg-topology.yaml
+  nodes:
+    tg__1: trafficgen_1.yardstick
+    vnf__1: vnf.yardstick
+  options:
+    framesize:
+      private: {64B: 100}
+      public: {64B: 100}
+    flow:
+      src_ip: [{'tg__1': 'xe0'}]
+      dst_ip: [{'tg__1': 'xe1'}]
+      count: 1
+    traffic_type: 4
+    rfc2544:
+      allowed_drop_rate: 0.0001 - 0.0001
+    vnf__1:
+      rules: acl_1rule.yaml
+      vnf_config: {lb_config: 'SW', lb_count: 1, worker_config: '1C/1T', worker_threads: 1}
+  runner:
+    type: Iteration
+    iterations: 10
+    interval: 35
+context:
+  # put node context first, so we don't HEAT deploy if node has errors
+  name: yardstick
+  image: yardstick-samplevnfs
+  flavor:
+    name: yardstick-dpdk-flavor
+    vcpus: 10
+    ram: 20480
+    disk: 4
+    extra_specs:
+      hw:cpu_sockets: 1
+      hw:cpu_cores: 10
+      hw:cpu_threads: 1
+  user: ubuntu
+  placement_groups:
+    pgrp1:
+      policy: "availability"
+  servers:
+    vnf:
+      floating_ip: true
+      placement: "pgrp1"
+    trafficgen_1:
+      floating_ip: true
+      placement: "pgrp1"
+  networks:
+    mgmt:
+      cidr: '10.0.1.0/24'
+    xe0:
+      cidr: '10.0.2.0/24'
+      vld_id: public_1
+      gateway_ip: 'null'
+#      port_security_enabled: False
+      allowed_address_pairs:
+        - ip_address:
+            '0.0.0.0/0'
+    xe1:
+      cidr: '10.0.3.0/24'
+      vld_id: private_1
+      gateway_ip: 'null'
+#      port_security_enabled: False
+      allowed_address_pairs:
+        - ip_address:
+            '0.0.0.0/0'
+
diff --git a/tests/opnfv/test_cases/opnfv_yardstick_tc078.yaml b/tests/opnfv/test_cases/opnfv_yardstick_tc078.yaml
new file mode 100644
index 000000000..b89f7674b
--- /dev/null
+++ b/tests/opnfv/test_cases/opnfv_yardstick_tc078.yaml
@@ -0,0 +1,39 @@
+##############################################################################
+# Copyright (c) 2017 Huawei Technologies Co.,Ltd and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+---
+
+schema: "yardstick:task:0.1"
+description: >
+    Yardstick TC078 config file;
+    Measure CPU performance using SPEC CPU2006;
+
+{% set file = file or "/etc/yardstick/pod.yaml" %}
+
+scenarios:
+-
+  type: SpecCPU2006
+
+  options:
+      benchmark_subset: int
+
+  host: node1.yardstick-TC078
+
+  runner:
+    type: Iteration
+    iterations: 1
+
+context:
+  type: Node
+  name: yardstick-TC078
+  file: {{ file }}
+
+  env:
+    type: ansible
+    setup: spec_cpu2006_install.yaml
+    teardown: spec_cpu2006_uninstall.yaml
diff --git a/tests/opnfv/test_cases/opnfv_yardstick_tc079.yaml b/tests/opnfv/test_cases/opnfv_yardstick_tc079.yaml
new file mode 100644
index 000000000..9c15acc9c
--- /dev/null
+++ b/tests/opnfv/test_cases/opnfv_yardstick_tc079.yaml
@@ -0,0 +1,54 @@
+##############################################################################
+# Copyright (c) 2017 Huawei Technologies Co.,Ltd and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+---
+
+schema: "yardstick:task:0.1"
+description: >
+    Yardstick TC079 config file;
+    measure storage and file system performance using bonnie++;
+
+{% set provider = provider or none %}
+{% set physical_network = physical_network or 'physnet1' %}
+{% set segmentation_id = segmentation_id or none %}
+
+scenarios:
+-
+  type: Bonnie++
+  options:
+    file_size: 1024
+    ram_size: 512
+    test_dir: /tmp
+    concurrency: 1
+
+  host: bonnie.yardstick-TC079
+
+  runner:
+    type: Iteration
+    iterations: 1
+
+context:
+  name: yardstick-TC079
+  image: yardstick-image
+  flavor: yardstick-flavor
+  user: ubuntu
+
+  servers:
+    bonnie:
+      floating_ip: true
+
+  networks:
+    test:
+      cidr: '10.0.1.0/24'
+      {% if provider == "vlan" %}
+      provider: {{provider}}
+      physical_network: {{physical_network}}
+        {% if segmentation_id %}
+      segmentation_id: {{segmentation_id}}
+        {% endif %}
+      {% endif %}
diff --git a/tests/unit/__init__.py b/tests/unit/__init__.py
index e69de29bb..a468b272b 100644
--- a/tests/unit/__init__.py
+++ b/tests/unit/__init__.py
@@ -0,0 +1,76 @@
+# Copyright (c) 2017 Intel Corporation

+#

+# 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 __future__ import absolute_import

+import mock

+

+

+STL_MOCKS = {

+    'trex_stl_lib': mock.MagicMock(),

+    'trex_stl_lib.base64': mock.MagicMock(),

+    'trex_stl_lib.binascii': mock.MagicMock(),

+    'trex_stl_lib.collections': mock.MagicMock(),

+    'trex_stl_lib.copy': mock.MagicMock(),

+    'trex_stl_lib.datetime': mock.MagicMock(),

+    'trex_stl_lib.functools': mock.MagicMock(),

+    'trex_stl_lib.imp': mock.MagicMock(),

+    'trex_stl_lib.inspect': mock.MagicMock(),

+    'trex_stl_lib.json': mock.MagicMock(),

+    'trex_stl_lib.linecache': mock.MagicMock(),

+    'trex_stl_lib.math': mock.MagicMock(),

+    'trex_stl_lib.os': mock.MagicMock(),

+    'trex_stl_lib.platform': mock.MagicMock(),

+    'trex_stl_lib.pprint': mock.MagicMock(),

+    'trex_stl_lib.random': mock.MagicMock(),

+    'trex_stl_lib.re': mock.MagicMock(),

+    'trex_stl_lib.scapy': mock.MagicMock(),

+    'trex_stl_lib.socket': mock.MagicMock(),

+    'trex_stl_lib.string': mock.MagicMock(),

+    'trex_stl_lib.struct': mock.MagicMock(),

+    'trex_stl_lib.sys': mock.MagicMock(),

+    'trex_stl_lib.threading': mock.MagicMock(),

+    'trex_stl_lib.time': mock.MagicMock(),

+    'trex_stl_lib.traceback': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_async_client': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_client': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_ext': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_port': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_stats': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_streams': mock.MagicMock(),

+    'trex_stl_lib.trex_stl_types': mock.MagicMock(),

+    'trex_stl_lib.types': mock.MagicMock(),

+    'trex_stl_lib.utils': mock.MagicMock(),

+    'trex_stl_lib.utils.argparse': mock.MagicMock(),

+    'trex_stl_lib.utils.collections': mock.MagicMock(),

+    'trex_stl_lib.utils.common': mock.MagicMock(),

+    'trex_stl_lib.utils.json': mock.MagicMock(),

+    'trex_stl_lib.utils.os': mock.MagicMock(),

+    'trex_stl_lib.utils.parsing_opts': mock.MagicMock(),

+    'trex_stl_lib.utils.pwd': mock.MagicMock(),

+    'trex_stl_lib.utils.random': mock.MagicMock(),

+    'trex_stl_lib.utils.re': mock.MagicMock(),

+    'trex_stl_lib.utils.string': mock.MagicMock(),

+    'trex_stl_lib.utils.sys': mock.MagicMock(),

+    'trex_stl_lib.utils.text_opts': mock.MagicMock(),

+    'trex_stl_lib.utils.text_tables': mock.MagicMock(),

+    'trex_stl_lib.utils.texttable': mock.MagicMock(),

+    'trex_stl_lib.warnings': mock.MagicMock(),

+    'trex_stl_lib.yaml': mock.MagicMock(),

+    'trex_stl_lib.zlib': mock.MagicMock(),

+    'trex_stl_lib.zmq': mock.MagicMock(),

+}

diff --git a/tests/unit/benchmark/runner/test_search.py b/tests/unit/benchmark/runner/test_search.py
index 9cfe6e154..8fab5a71f 100644
--- a/tests/unit/benchmark/runner/test_search.py
+++ b/tests/unit/benchmark/runner/test_search.py
@@ -14,70 +14,11 @@
 #
 
 from __future__ import absolute_import
-import unittest
-from contextlib import contextmanager
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/benchmark/scenarios/networking/test_pktgen.py b/tests/unit/benchmark/scenarios/networking/test_pktgen.py
index 32ba255b2..0ca31d484 100644
--- a/tests/unit/benchmark/scenarios/networking/test_pktgen.py
+++ b/tests/unit/benchmark/scenarios/networking/test_pktgen.py
@@ -132,7 +132,7 @@ class PktgenTestCase(unittest.TestCase):
         p._iptables_get_result = mock_iptables_result
 
         sample_output = '{"packets_per_second": 9753, "errors": 0, \
-            "packets_sent": 149776, "packetsize": 60, "flows": 110}'
+            "packets_sent": 149776, "packetsize": 60, "flows": 110, "ppm": 3179}'
         mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
 
         p.run(result)
@@ -159,7 +159,7 @@ class PktgenTestCase(unittest.TestCase):
         p._iptables_get_result = mock_iptables_result
 
         sample_output = '{"packets_per_second": 9753, "errors": 0, \
-            "packets_sent": 149776, "packetsize": 60, "flows": 110}'
+            "packets_sent": 149776, "packetsize": 60, "flows": 110, "ppm": 3179}'
         mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
 
         p.run(result)
@@ -648,7 +648,7 @@ class PktgenTestCase(unittest.TestCase):
         p._iptables_get_result = mock_iptables_result
 
         sample_output = '{"packets_per_second": 9753, "errors": 0, \
-            "packets_sent": 149300, "flows": 110}'
+            "packets_sent": 149300, "flows": 110, "ppm": 0}'
         mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
 
         p.run(result)
@@ -693,7 +693,7 @@ class PktgenTestCase(unittest.TestCase):
         p._iptables_get_result = mock_iptables_result
 
         sample_output = '{"packets_per_second": 9753, "errors": 0, \
-            "packets_sent": 149300, "flows": 110}'
+            "packets_sent": 149300, "flows": 110, "ppm": 0}'
         mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
 
         p.run(result)
@@ -730,7 +730,7 @@ class PktgenTestCase(unittest.TestCase):
         p._iptables_get_result = mock_iptables_result
 
         sample_output = '{"packets_per_second": 9753, "errors": 0, \
-            "packets_sent": 149300, "flows": 110}'
+            "packets_sent": 149300, "flows": 110, "ppm": 0}'
         mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
 
         p.run(result)
diff --git a/tests/unit/benchmark/scenarios/networking/test_vnf_generic.py b/tests/unit/benchmark/scenarios/networking/test_vnf_generic.py
index 8ce33625b..df5047a0d 100644
--- a/tests/unit/benchmark/scenarios/networking/test_vnf_generic.py
+++ b/tests/unit/benchmark/scenarios/networking/test_vnf_generic.py
@@ -24,6 +24,7 @@ import errno
 import unittest
 import mock
 
+from tests.unit import STL_MOCKS
 from yardstick.benchmark.scenarios.networking.vnf_generic import \
     SshManager, NetworkServiceTestCase, IncorrectConfig, \
     open_relative_file
@@ -31,65 +32,6 @@ from yardstick.network_services.collector.subscriber import Collector
 from yardstick.network_services.vnf_generic.vnf.base import \
     GenericTrafficGen, GenericVNF
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
 
 COMPLETE_TREX_VNFD = {
     'vnfd:vnfd-catalog': {
diff --git a/tests/unit/network_services/traffic_profile/test_fixed.py b/tests/unit/network_services/traffic_profile/test_fixed.py
index 8b44719a1..84843178e 100644
--- a/tests/unit/network_services/traffic_profile/test_fixed.py
+++ b/tests/unit/network_services/traffic_profile/test_fixed.py
@@ -16,68 +16,11 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_ixia_rfc2544.py b/tests/unit/network_services/traffic_profile/test_ixia_rfc2544.py
index 6dba64af9..b2cb9dfea 100644
--- a/tests/unit/network_services/traffic_profile/test_ixia_rfc2544.py
+++ b/tests/unit/network_services/traffic_profile/test_ixia_rfc2544.py
@@ -20,65 +20,7 @@ from __future__ import division
 import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_prox_acl.py b/tests/unit/network_services/traffic_profile/test_prox_acl.py
index 252c655da..be172f26b 100644
--- a/tests/unit/network_services/traffic_profile/test_prox_acl.py
+++ b/tests/unit/network_services/traffic_profile/test_prox_acl.py
@@ -14,69 +14,11 @@
 #
 
 from __future__ import absolute_import
-import unittest
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_prox_binsearch.py b/tests/unit/network_services/traffic_profile/test_prox_binsearch.py
index 74e6121a7..72b86709c 100644
--- a/tests/unit/network_services/traffic_profile/test_prox_binsearch.py
+++ b/tests/unit/network_services/traffic_profile/test_prox_binsearch.py
@@ -14,69 +14,11 @@
 #
 
 from __future__ import absolute_import
-import unittest
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_prox_profile.py b/tests/unit/network_services/traffic_profile/test_prox_profile.py
index a2ad0333f..14223da0f 100644
--- a/tests/unit/network_services/traffic_profile/test_prox_profile.py
+++ b/tests/unit/network_services/traffic_profile/test_prox_profile.py
@@ -14,69 +14,11 @@
 #
 
 from __future__ import absolute_import
-import unittest
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_prox_ramp.py b/tests/unit/network_services/traffic_profile/test_prox_ramp.py
index 19e6ff8cb..357298759 100644
--- a/tests/unit/network_services/traffic_profile/test_prox_ramp.py
+++ b/tests/unit/network_services/traffic_profile/test_prox_ramp.py
@@ -14,69 +14,11 @@
 #
 
 from __future__ import absolute_import
-import unittest
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_rfc2544.py b/tests/unit/network_services/traffic_profile/test_rfc2544.py
index 04b7efc48..aef0b93de 100644
--- a/tests/unit/network_services/traffic_profile/test_rfc2544.py
+++ b/tests/unit/network_services/traffic_profile/test_rfc2544.py
@@ -17,68 +17,12 @@
 
 from __future__ import absolute_import
 from __future__ import division
+
 import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/traffic_profile/test_traffic_profile.py b/tests/unit/network_services/traffic_profile/test_traffic_profile.py
index 37193f862..9a78c36a3 100644
--- a/tests/unit/network_services/traffic_profile/test_traffic_profile.py
+++ b/tests/unit/network_services/traffic_profile/test_traffic_profile.py
@@ -16,69 +16,12 @@
 #
 
 from __future__ import absolute_import
-import unittest
 
+import unittest
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_acl_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_acl_vnf.py
index a63a59d48..7570067b9 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_acl_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_acl_vnf.py
@@ -16,70 +16,13 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 import os
 
+from tests.unit import STL_MOCKS
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_cgnapt_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_cgnapt_vnf.py
index bf226d2c8..f214d66f6 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_cgnapt_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_cgnapt_vnf.py
@@ -19,68 +19,10 @@ from __future__ import absolute_import
 
 import os
 import unittest
-
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_iniparser.py b/tests/unit/network_services/vnf_generic/vnf/test_iniparser.py
index 53481ddd0..b74e5d9fd 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_iniparser.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_iniparser.py
@@ -14,70 +14,13 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 from contextlib import contextmanager
-
 import mock
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_prox_helpers.py b/tests/unit/network_services/vnf_generic/vnf/test_prox_helpers.py
index 90ec3f374..98eccae4f 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_prox_helpers.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_prox_helpers.py
@@ -23,69 +23,10 @@ import unittest
 from collections import OrderedDict
 from itertools import repeat, chain
 from contextlib import contextmanager
-
 import mock
 
+from tests.unit import STL_MOCKS
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_prox_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_prox_vnf.py
index 453100b90..c727cb7fb 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_prox_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_prox_vnf.py
@@ -19,71 +19,13 @@ from __future__ import absolute_import
 
 import os
 import unittest
-
 import mock
 from copy import deepcopy
 
-SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
+from tests.unit import STL_MOCKS
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+
+SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py
index 07a862a8e..455e44ec9 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py
@@ -18,11 +18,13 @@
 # Unittest for yardstick.network_services.vnf_generic.vnf.sample_vnf
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 from copy import deepcopy
 
 from tests.unit.network_services.vnf_generic.vnf.test_base import mock_ssh
+from tests.unit import STL_MOCKS
 from yardstick.benchmark.contexts.base import Context
 from yardstick.network_services.nfvi.resource import ResourceProfile
 from yardstick.network_services.traffic_profile.base import TrafficProfile
@@ -34,66 +36,6 @@ class MockError(BaseException):
     pass
 
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
-
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
 stl_patch.start()
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_ixload.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_ixload.py
index cda44127e..5c81aa886 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_ixload.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_ixload.py
@@ -16,69 +16,13 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 import subprocess
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_ping.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_ping.py
index 949bfb3d4..45bbfaea3 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_ping.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_ping.py
@@ -16,74 +16,16 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 from multiprocessing import Queue
 
 from tests.unit.network_services.vnf_generic.vnf.test_base import mock_ssh
+from tests.unit import STL_MOCKS
 
 SSH_HELPER = "yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper"
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
-
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
 stl_patch.start()
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_prox.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_prox.py
index 1a01b9e15..12abadf98 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_prox.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_prox.py
@@ -14,76 +14,17 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 
 from tests.unit.network_services.vnf_generic.vnf.test_base import mock_ssh
+from tests.unit import STL_MOCKS
 
 
 SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
 NAME = 'vnf__1'
 
-
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
-
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
 stl_patch.start()
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_ixia.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_ixia.py
index 8f7f05772..ca8150cb2 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_ixia.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_ixia.py
@@ -16,68 +16,13 @@
 #
 
 from __future__ import absolute_import
+
 import os
 import unittest
 import mock
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_trex.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_trex.py
index 7dc303852..3dcb02f02 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_trex.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_rfc2544_trex.py
@@ -16,70 +16,14 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 
-SSH_HELPER = "yardstick.ssh.SSH"
+from tests.unit import STL_MOCKS
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+
+SSH_HELPER = "yardstick.ssh.SSH"
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_tg_trex.py b/tests/unit/network_services/vnf_generic/vnf/test_tg_trex.py
index 6fb5d080f..65370dfa5 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_tg_trex.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_tg_trex.py
@@ -16,74 +16,16 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 
 from tests.unit.network_services.vnf_generic.vnf.test_base import mock_ssh
+from tests.unit import STL_MOCKS
 
 
 NAME = 'vnf_1'
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
-
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
 stl_patch.start()
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_udp_replay.py b/tests/unit/network_services/vnf_generic/vnf/test_udp_replay.py
index 08bf06b74..f0d75d57b 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_udp_replay.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_udp_replay.py
@@ -16,70 +16,13 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 import os
 
+from tests.unit import STL_MOCKS
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_vfw_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_vfw_vnf.py
index d817b164c..7dae89f40 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_vfw_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_vfw_vnf.py
@@ -16,69 +16,13 @@
 #
 
 from __future__ import absolute_import
+
 import unittest
 import mock
 import os
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+from tests.unit import STL_MOCKS
+
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
index 80b4a5108..5e66390e3 100644
--- a/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
+++ b/tests/unit/network_services/vnf_generic/vnf/test_vpe_vnf.py
@@ -16,77 +16,18 @@
 #
 
 from __future__ import absolute_import
+import six.moves.configparser as configparser
 
 import os
 import unittest
-
-import six.moves.configparser as configparser
 import mock
 from multiprocessing import Process, Queue
 
+from tests.unit import STL_MOCKS
 from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
 
-SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
 
-STL_MOCKS = {
-    'stl': mock.MagicMock(),
-    'stl.trex_stl_lib': mock.MagicMock(),
-    'stl.trex_stl_lib.base64': mock.MagicMock(),
-    'stl.trex_stl_lib.binascii': mock.MagicMock(),
-    'stl.trex_stl_lib.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.copy': mock.MagicMock(),
-    'stl.trex_stl_lib.datetime': mock.MagicMock(),
-    'stl.trex_stl_lib.functools': mock.MagicMock(),
-    'stl.trex_stl_lib.imp': mock.MagicMock(),
-    'stl.trex_stl_lib.inspect': mock.MagicMock(),
-    'stl.trex_stl_lib.json': mock.MagicMock(),
-    'stl.trex_stl_lib.linecache': mock.MagicMock(),
-    'stl.trex_stl_lib.math': mock.MagicMock(),
-    'stl.trex_stl_lib.os': mock.MagicMock(),
-    'stl.trex_stl_lib.platform': mock.MagicMock(),
-    'stl.trex_stl_lib.pprint': mock.MagicMock(),
-    'stl.trex_stl_lib.random': mock.MagicMock(),
-    'stl.trex_stl_lib.re': mock.MagicMock(),
-    'stl.trex_stl_lib.scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.socket': mock.MagicMock(),
-    'stl.trex_stl_lib.string': mock.MagicMock(),
-    'stl.trex_stl_lib.struct': mock.MagicMock(),
-    'stl.trex_stl_lib.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.threading': mock.MagicMock(),
-    'stl.trex_stl_lib.time': mock.MagicMock(),
-    'stl.trex_stl_lib.traceback': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_async_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_exceptions': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_ext': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_jsonrpc_client': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_interface': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_packet_builder_scapy': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_port': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_stats': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_streams': mock.MagicMock(),
-    'stl.trex_stl_lib.trex_stl_types': mock.MagicMock(),
-    'stl.trex_stl_lib.types': mock.MagicMock(),
-    'stl.trex_stl_lib.utils': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.argparse': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.collections': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.common': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.json': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.os': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.parsing_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.pwd': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.random': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.re': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.string': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.sys': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_opts': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.text_tables': mock.MagicMock(),
-    'stl.trex_stl_lib.utils.texttable': mock.MagicMock(),
-    'stl.trex_stl_lib.warnings': mock.MagicMock(),
-    'stl.trex_stl_lib.yaml': mock.MagicMock(),
-    'stl.trex_stl_lib.zlib': mock.MagicMock(),
-    'stl.trex_stl_lib.zmq': mock.MagicMock(),
-}
+SSH_HELPER = 'yardstick.network_services.vnf_generic.vnf.sample_vnf.VnfSshHelper'
 
 STLClient = mock.MagicMock()
 stl_patch = mock.patch.dict("sys.modules", STL_MOCKS)
diff --git a/yardstick/benchmark/scenarios/networking/pktgen.py b/yardstick/benchmark/scenarios/networking/pktgen.py
index 1e0a5fcbb..a9e7aa6a3 100644
--- a/yardstick/benchmark/scenarios/networking/pktgen.py
+++ b/yardstick/benchmark/scenarios/networking/pktgen.py
@@ -11,6 +11,7 @@ from __future__ import print_function
 
 import os
 import logging
+import math
 
 import pkg_resources
 from oslo_serialization import jsonutils
@@ -357,15 +358,15 @@ class Pktgen(base.Scenario):
 
         result.update(jsonutils.loads(stdout))
 
-        result['packets_received'] = self._iptables_get_result()
+        received = result['packets_received'] = self._iptables_get_result()
+        sent = result['packets_sent']
         result['packetsize'] = packetsize
+        # compatible with python3 /
+        ppm = math.ceil(1000000.0 * (sent - received) / sent)
+
+        result['ppm'] = ppm
 
         if "sla" in self.scenario_cfg:
-            sent = result['packets_sent']
-            received = result['packets_received']
-            ppm = 1000000 * (sent - received) / sent
-            # if ppm is 1, then 11 out of 10 million is no pass
-            ppm += (sent - received) % sent > 0
             LOG.debug("Lost packets %d - Lost ppm %d", (sent - received), ppm)
             sla_max_ppm = int(self.scenario_cfg["sla"]["max_ppm"])
             assert ppm <= sla_max_ppm, "ppm %d > sla_max_ppm %d; " \
diff --git a/yardstick/benchmark/scenarios/networking/vnf_generic.py b/yardstick/benchmark/scenarios/networking/vnf_generic.py
index 18a75d070..aecc228bc 100644
--- a/yardstick/benchmark/scenarios/networking/vnf_generic.py
+++ b/yardstick/benchmark/scenarios/networking/vnf_generic.py
@@ -14,13 +14,13 @@
 """ NSPerf specific scenario definition """
 
 from __future__ import absolute_import
-import logging
 
+import logging
 import errno
 
 import ipaddress
 import os
-
+import sys
 import re
 from itertools import chain
 
@@ -35,8 +35,10 @@ from yardstick.network_services.collector.subscriber import Collector
 from yardstick.network_services.vnf_generic import vnfdgen
 from yardstick.network_services.vnf_generic.vnf.base import GenericVNF
 from yardstick.network_services.traffic_profile.base import TrafficProfile
+from yardstick.network_services.utils import get_nsb_option
 from yardstick import ssh
 
+
 LOG = logging.getLogger(__name__)
 
 
@@ -439,6 +441,9 @@ printf "%s/driver:" $1 ; basename $(readlink -s $1/device/driver); } \
         :param context_cfg:
         :return:
         """
+        trex_lib_path = get_nsb_option('trex_client_lib')
+        sys.path[:] = list(chain([trex_lib_path], (x for x in sys.path if x != trex_lib_path)))
+
         if scenario_cfg is None:
             scenario_cfg = self.scenario_cfg
 
diff --git a/yardstick/common/constants.py b/yardstick/common/constants.py
index fe394fd4d..ec683e94b 100644
--- a/yardstick/common/constants.py
+++ b/yardstick/common/constants.py
@@ -59,6 +59,7 @@ if not SERVER_IP:
 
 # dir
 CONF_DIR = get_param('dir.conf', '/etc/yardstick')
+IMAGE_DIR = get_param('dir.images', '/home/opnfv/images/')
 REPOS_DIR = get_param('dir.repos', '/home/opnfv/repos/yardstick')
 RELENG_DIR = get_param('dir.releng', '/home/opnfv/repos/releng')
 LOG_DIR = get_param('dir.log', '/tmp/yardstick/')
diff --git a/yardstick/network_services/helpers/samplevnf_helper.py b/yardstick/network_services/helpers/samplevnf_helper.py
index 35d23603f..ae5451020 100644
--- a/yardstick/network_services/helpers/samplevnf_helper.py
+++ b/yardstick/network_services/helpers/samplevnf_helper.py
@@ -222,7 +222,7 @@ class MultiPortConfig(object):
             return
 
         try:
-            self.start_core = 'h{}'.format(int(self.start_core))
+            self.start_core = '{}h'.format(int(self.start_core))
         except ValueError:
             self.start_core = int(self.start_core[:-1]) + 1
 
diff --git a/yardstick/network_services/traffic_profile/fixed.py b/yardstick/network_services/traffic_profile/fixed.py
index ebc1e61f2..b7cd03773 100644
--- a/yardstick/network_services/traffic_profile/fixed.py
+++ b/yardstick/network_services/traffic_profile/fixed.py
@@ -16,10 +16,10 @@
 from __future__ import absolute_import
 
 from yardstick.network_services.traffic_profile.base import TrafficProfile
-from stl.trex_stl_lib.trex_stl_streams import STLTXCont
-from stl.trex_stl_lib.trex_stl_client import STLStream
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLPktBuilder
-from stl.trex_stl_lib import api as Pkt
+from trex_stl_lib.trex_stl_streams import STLTXCont
+from trex_stl_lib.trex_stl_client import STLStream
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLPktBuilder
+from trex_stl_lib import api as Pkt
 
 
 class FixedProfile(TrafficProfile):
diff --git a/yardstick/network_services/traffic_profile/rfc2544.py b/yardstick/network_services/traffic_profile/rfc2544.py
index b07bc9d5a..a3b803673 100644
--- a/yardstick/network_services/traffic_profile/rfc2544.py
+++ b/yardstick/network_services/traffic_profile/rfc2544.py
@@ -17,9 +17,9 @@ from __future__ import absolute_import
 from __future__ import division
 import logging
 
-from stl.trex_stl_lib.trex_stl_client import STLStream
-from stl.trex_stl_lib.trex_stl_streams import STLFlowLatencyStats
-from stl.trex_stl_lib.trex_stl_streams import STLTXCont
+from trex_stl_lib.trex_stl_client import STLStream
+from trex_stl_lib.trex_stl_streams import STLFlowLatencyStats
+from trex_stl_lib.trex_stl_streams import STLTXCont
 
 from yardstick.network_services.traffic_profile.traffic_profile \
     import TrexProfile
diff --git a/yardstick/network_services/traffic_profile/traffic_profile.py b/yardstick/network_services/traffic_profile/traffic_profile.py
index fcec04fed..7bbe89268 100644
--- a/yardstick/network_services/traffic_profile/traffic_profile.py
+++ b/yardstick/network_services/traffic_profile/traffic_profile.py
@@ -21,17 +21,17 @@ from random import SystemRandom
 import six
 
 from yardstick.network_services.traffic_profile.base import TrafficProfile
-from stl.trex_stl_lib.trex_stl_client import STLStream
-from stl.trex_stl_lib.trex_stl_streams import STLFlowLatencyStats
-from stl.trex_stl_lib.trex_stl_streams import STLTXCont
-from stl.trex_stl_lib.trex_stl_streams import STLProfile
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLVmWrFlowVar
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFlowVarRepeatableRandom
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFlowVar
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLPktBuilder
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLScVmRaw
-from stl.trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFixIpv4
-from stl.trex_stl_lib import api as Pkt
+from trex_stl_lib.trex_stl_client import STLStream
+from trex_stl_lib.trex_stl_streams import STLFlowLatencyStats
+from trex_stl_lib.trex_stl_streams import STLTXCont
+from trex_stl_lib.trex_stl_streams import STLProfile
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLVmWrFlowVar
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFlowVarRepeatableRandom
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFlowVar
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLPktBuilder
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLScVmRaw
+from trex_stl_lib.trex_stl_packet_builder_scapy import STLVmFixIpv4
+from trex_stl_lib import api as Pkt
 
 
 class TrexProfile(TrafficProfile):
@@ -142,13 +142,12 @@ class TrexProfile(TrafficProfile):
             src_ip4 = min_value
             self._set_ip_fields(src=src_ip4)
         else:
-            stl_vm_flow_var = \
-                STLVmFlowVarRepeatableRandom(name="ip4_src",
-                                             min_value=min_value,
-                                             max_value=max_value,
-                                             size=4,
-                                             limit=int(count),
-                                             seed=0x1235)
+            stl_vm_flow_var = STLVmFlowVarRepeatableRandom(name="ip4_src",
+                                                           min_value=min_value,
+                                                           max_value=max_value,
+                                                           size=4,
+                                                           limit=int(count),
+                                                           seed=0x1235)
             self.vm_flow_vars.append(stl_vm_flow_var)
             stl_vm_wr_flow_var = STLVmWrFlowVar(fv_name='ip4_src',
                                                 pkt_offset='IP.src')
@@ -165,13 +164,12 @@ class TrexProfile(TrafficProfile):
             dst_ip4 = min_value
             self._set_ip_fields(dst=dst_ip4)
         else:
-            stl_vm_flow_var = \
-                STLVmFlowVarRepeatableRandom(name="dst_ip4",
-                                             min_value=min_value,
-                                             max_value=max_value,
-                                             size=4,
-                                             limit=int(count),
-                                             seed=0x1235)
+            stl_vm_flow_var = STLVmFlowVarRepeatableRandom(name="dst_ip4",
+                                                           min_value=min_value,
+                                                           max_value=max_value,
+                                                           size=4,
+                                                           limit=int(count),
+                                                           seed=0x1235)
             self.vm_flow_vars.append(stl_vm_flow_var)
             stl_vm_wr_flow_var = STLVmWrFlowVar(fv_name='dst_ip4',
                                                 pkt_offset='IP.dst')
@@ -253,13 +251,12 @@ class TrexProfile(TrafficProfile):
             self._set_udp_fields(sport=src_port)
         else:
             max_value = int(src_ports[1])
-            stl_vm_flow_var = \
-                STLVmFlowVarRepeatableRandom(name="port_src",
-                                             min_value=min_value,
-                                             max_value=max_value,
-                                             size=2,
-                                             limit=int(count),
-                                             seed=0x1235)
+            stl_vm_flow_var = STLVmFlowVarRepeatableRandom(name="port_src",
+                                                           min_value=min_value,
+                                                           max_value=max_value,
+                                                           size=2,
+                                                           limit=int(count),
+                                                           seed=0x1235)
             self.vm_flow_vars.append(stl_vm_flow_var)
             stl_vm_wr_flow_var = STLVmWrFlowVar(fv_name='port_src',
                                                 pkt_offset=self.udp_sport)
diff --git a/yardstick/network_services/utils.py b/yardstick/network_services/utils.py
index 0264bbc1c..d52e27c15 100644
--- a/yardstick/network_services/utils.py
+++ b/yardstick/network_services/utils.py
@@ -30,7 +30,10 @@ OPTS = [
                help='bin_path for VNFs location.'),
     cfg.StrOpt('trex_path',
                default=os.path.join(NSB_ROOT, 'trex/scripts'),
-               help='trex automation lib pathh.'),
+               help='trex automation lib path.'),
+    cfg.StrOpt('trex_client_lib',
+               default=os.path.join(NSB_ROOT, 'trex_client/stl'),
+               help='trex python library path.'),
 ]
 CONF.register_opts(OPTS, group="nsb")
 
diff --git a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
index 0434f6aef..7a756837e 100644
--- a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
+++ b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
@@ -37,9 +37,9 @@ from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
 from yardstick.network_services.vnf_generic.vnf.base import GenericTrafficGen
 from yardstick.network_services.utils import get_nsb_option
 
-from stl.trex_stl_lib.trex_stl_client import STLClient
-from stl.trex_stl_lib.trex_stl_client import LoggerApi
-from stl.trex_stl_lib.trex_stl_exceptions import STLError
+from trex_stl_lib.trex_stl_client import STLClient
+from trex_stl_lib.trex_stl_client import LoggerApi
+from trex_stl_lib.trex_stl_exceptions import STLError
 
 from yardstick.ssh import AutoConnectSSH