diff --git a/src/test/scale/__init__.py b/src/test/scale/__init__.py
new file mode 100644
index 0000000..db4ad9c
--- /dev/null
+++ b/src/test/scale/__init__.py
@@ -0,0 +1,26 @@
+# 
+# Copyright 2016-present Ciena 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.
+#
+import os,sys
+##add the python path to lookup the utils
+working_dir = os.path.dirname(os.path.realpath(sys.argv[-1]))
+utils_dir = os.path.join(working_dir, '../utils')
+fsm_dir = os.path.join(working_dir, '../fsm')
+subscriber_dir = os.path.join(working_dir, '../subscriber')
+__path__.append(utils_dir)
+__path__.append(fsm_dir)
+__path__.append(subscriber_dir)
+cli_dir = os.path.join(working_dir, '../cli')
+__path__.append(cli_dir)
diff --git a/src/test/scale/scaleTest.json b/src/test/scale/scaleTest.json
new file mode 100644
index 0000000..7df3e10
--- /dev/null
+++ b/src/test/scale/scaleTest.json
@@ -0,0 +1,3 @@
+{
+    "NUM_SUBSCRIBERS" : 100
+}
diff --git a/src/test/scale/scaleTest.py b/src/test/scale/scaleTest.py
new file mode 100644
index 0000000..d94655f
--- /dev/null
+++ b/src/test/scale/scaleTest.py
@@ -0,0 +1,332 @@
+#copyright 2016-present Ciena 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.
+#
+import time
+import os
+import sys
+import json
+import requests
+from nose.tools import *
+from twisted.internet import defer
+from nose.twistedtools import reactor, deferred
+from CordTestUtils import *
+from OltConfig import OltConfig
+from onosclidriver import OnosCliDriver
+from SSHTestAgent import SSHTestAgent
+from CordLogger import CordLogger
+from VSGAccess import VSGAccess
+from CordTestUtils import log_test as log
+from CordTestConfig import setup_module, running_on_ciab
+from OnosCtrl import OnosCtrl
+from CordContainer import Onos
+log.setLevel('INFO')
+
+class scale_exchange(CordLogger):
+    HOST = "10.1.0.1"
+    USER = "vagrant"
+    PASS = "vagrant"
+    head_node = os.getenv('HEAD_NODE', 'prod')
+    HEAD_NODE = head_node + '.cord.lab' if len(head_node.split('.')) == 1 else head_node
+    test_path = os.path.dirname(os.path.realpath(__file__))
+    olt_conf_file = os.getenv('OLT_CONFIG_FILE', os.path.join(test_path, '..', 'setup/olt_config.json'))
+    restApiXos =  None
+    subscriber_account_num = 100
+    subscriber_s_tag = 500
+    subscriber_c_tag = 500
+    subscribers_per_s_tag = 8
+    subscriber_map = {}
+    subscriber_info = []
+    volt_subscriber_info = []
+    restore_methods = []
+    TIMEOUT=120
+    NUM_SUBSCRIBERS = 100
+
+    @classmethod
+    def getSubscriberCredentials(cls, subId):
+        """Generate our own account num, s_tag and c_tags"""
+        if subId in cls.subscriber_map:
+            return cls.subscriber_map[subId]
+        account_num = cls.subscriber_account_num
+        cls.subscriber_account_num += 1
+        s_tag, c_tag = cls.subscriber_s_tag, cls.subscriber_c_tag
+        cls.subscriber_c_tag += 1
+        if cls.subscriber_c_tag % cls.subscribers_per_s_tag == 0:
+            cls.subscriber_s_tag += 1
+        cls.subscriber_map[subId] = account_num, s_tag, c_tag
+        return cls.subscriber_map[subId]
+
+    @classmethod
+    def getXosCredentials(cls):
+        onos_cfg = OnosCtrl.get_config()
+        if onos_cfg is None:
+            return None
+        if 'apps' in onos_cfg and \
+           'org.opencord.vtn' in onos_cfg['apps'] and \
+           'cordvtn' in onos_cfg['apps']['org.opencord.vtn'] and \
+           'xos' in onos_cfg['apps']['org.opencord.vtn']['cordvtn']:
+            xos_cfg = onos_cfg['apps']['org.opencord.vtn']['cordvtn']['xos']
+            endpoint = xos_cfg['endpoint']
+            user = xos_cfg['user']
+            password = xos_cfg['password']
+            xos_endpoints = endpoint.split(':')
+            xos_host = xos_endpoints[1][len('//'):]
+            xos_port = xos_endpoints[2][:-1]
+            #log.info('xos_host: %s, port: %s, user: %s, password: %s' %(xos_host, xos_port, user, password))
+            return dict(host = xos_host, port = xos_port, user = user, password = password)
+
+        return None
+
+    @classmethod
+    def getSubscriberConfig(cls, num_subscribers):
+        features =  {
+            'cdn': True,
+            'uplink_speed': 1000000000,
+            'downlink_speed': 1000000000,
+            'uverse': True,
+            'status': 'enabled'
+        }
+        subscriber_map = []
+        for i in xrange(num_subscribers):
+            subId = 'sub{}'.format(i)
+            account_num, _, _ = cls.getSubscriberCredentials(subId)
+            identity = { 'account_num' : str(account_num),
+                         'name' : 'My House {}'.format(i)
+                         }
+            sub_info = { 'features' : features,
+                         'identity' : identity
+                         }
+            subscriber_map.append(sub_info)
+
+        return subscriber_map
+
+    @classmethod
+    def getVoltSubscriberConfig(cls, num_subscribers):
+        voltSubscriberMap = []
+        for i in xrange(num_subscribers):
+            subId = 'sub{}'.format(i)
+            account_num, s_tag, c_tag = cls.getSubscriberCredentials(subId)
+            voltSubscriberInfo = {}
+            voltSubscriberInfo['voltTenant'] = dict(s_tag = str(s_tag),
+                                                    c_tag = str(c_tag),
+                                                    subscriber = '')
+            voltSubscriberInfo['account_num'] = account_num
+            voltSubscriberMap.append(voltSubscriberInfo)
+
+        return voltSubscriberMap
+
+    @classmethod
+    def setUpCordApi(cls):
+        our_path = os.path.dirname(os.path.realpath(__file__))
+        cord_api_path = os.path.join(our_path, '..', 'cord-api')
+        framework_path = os.path.join(cord_api_path, 'Framework')
+        utils_path = os.path.join(framework_path, 'utils')
+        data_path = os.path.join(cord_api_path, 'Tests', 'data')
+        subscriber_cfg = os.path.join(data_path, 'Subscriber.json')
+        volt_tenant_cfg = os.path.join(data_path, 'VoltTenant.json')
+        num_subscribers = max(cls.NUM_SUBSCRIBERS, 10)
+        cls.subscriber_info = cls.getSubscriberConfig(num_subscribers)
+        cls.volt_subscriber_info = cls.getVoltSubscriberConfig(num_subscribers)
+
+        sys.path.append(utils_path)
+        sys.path.append(framework_path)
+        from restApi import restApi
+        restApiXos = restApi()
+        xos_credentials = cls.getXosCredentials()
+        if xos_credentials is None:
+            restApiXos.controllerIP = cls.HEAD_NODE
+            restApiXos.controllerPort = '9000'
+        else:
+            restApiXos.controllerIP = xos_credentials['host']
+            restApiXos.controllerPort = xos_credentials['port']
+            restApiXos.user = xos_credentials['user']
+            restApiXos.password = xos_credentials['password']
+        cls.restApiXos = restApiXos
+
+    @classmethod
+    def getVoltId(cls, result, subId):
+        if type(result) is not type([]):
+            return None
+        for tenant in result:
+            if str(tenant['subscriber']) == str(subId):
+                return str(tenant['id'])
+        return None
+
+    @classmethod
+    def setUpClass(cls):
+        cls.controllers = get_controllers()
+        cls.controller = cls.controllers[0]
+        cls.cli = None
+        cls.on_pod = running_on_pod()
+        cls.on_ciab = running_on_ciab()
+        cls.olt = OltConfig(olt_conf_file = cls.olt_conf_file)
+        cls.vcpes = cls.olt.get_vcpes()
+        cls.vcpes_dhcp = cls.olt.get_vcpes_by_type('dhcp')
+        cls.vcpes_reserved = cls.olt.get_vcpes_by_type('reserved')
+        cls.dhcp_vcpes_reserved = [ 'vcpe{}.{}.{}'.format(i, cls.vcpes_reserved[i]['s_tag'], cls.vcpes_reserved[i]['c_tag'])
+                                    for i in xrange(len(cls.vcpes_reserved)) ]
+        cls.untagged_dhcp_vcpes_reserved = [ 'vcpe{}'.format(i) for i in xrange(len(cls.vcpes_reserved)) ]
+        cls.container_vcpes_reserved = [ 'vcpe-{}-{}'.format(vcpe['s_tag'], vcpe['c_tag']) for vcpe in cls.vcpes_reserved ]
+        vcpe_dhcp_reserved = None
+        vcpe_container_reserved = None
+        if cls.vcpes_reserved:
+            vcpe_dhcp_reserved = cls.dhcp_vcpes_reserved[0]
+            if cls.on_pod is False:
+                vcpe_dhcp_reserved = cls.untagged_dhcp_vcpes_reserved[0]
+            vcpe_container_reserved = cls.container_vcpes_reserved[0]
+
+        cls.vcpe_dhcp_reserved = vcpe_dhcp_reserved
+        cls.vcpe_container_reserved = vcpe_container_reserved
+        dhcp_vcpe_offset = len(cls.vcpes_reserved)
+        cls.dhcp_vcpes = [ 'vcpe{}.{}.{}'.format(i+dhcp_vcpe_offset, cls.vcpes_dhcp[i]['s_tag'], cls.vcpes_dhcp[i]['c_tag'])
+                           for i in xrange(len(cls.vcpes_dhcp))  ]
+        cls.untagged_dhcp_vcpes = [ 'vcpe{}'.format(i+dhcp_vcpe_offset) for i in xrange(len(cls.vcpes_dhcp)) ]
+        cls.container_vcpes = [ 'vcpe-{}-{}'.format(vcpe['s_tag'], vcpe['c_tag']) for vcpe in cls.vcpes_dhcp ]
+        vcpe_dhcp = None
+        vcpe_container = None
+        #cache the first dhcp vcpe in the class for quick testing
+        if cls.vcpes_dhcp:
+            vcpe_container = cls.container_vcpes[0]
+            vcpe_dhcp = cls.dhcp_vcpes[0]
+            if cls.on_pod is False:
+                vcpe_dhcp = cls.untagged_dhcp_vcpes[0]
+        cls.vcpe_container = vcpe_container_reserved or vcpe_container
+        cls.vcpe_dhcp = vcpe_dhcp_reserved or vcpe_dhcp
+        VSGAccess.setUp()
+        cls.setUpCordApi()
+        if cls.on_pod is True:
+            cls.openVCPEAccess(cls.volt_subscriber_info)
+
+    @classmethod
+    def tearDownClass(cls):
+        VSGAccess.tearDown()
+        if cls.on_pod is True:
+            cls.closeVCPEAccess(cls.volt_subscriber_info)
+
+    def log_set(self, level = None, app = 'org.onosproject'):
+        CordLogger.logSet(level = level, app = app, controllers = self.controllers, forced = True)
+
+    @classmethod
+    def config_restore(cls):
+        """Restore the vsg test configuration on test case failures"""
+        for restore_method in cls.restore_methods:
+            restore_method()
+
+    def vsg_xos_subscriber_id(self, index):
+	log.info('index and its type are %s, %s'%(index, type(index)))
+        volt_subscriber_info = self.volt_subscriber_info[index]
+        result = self.restApiXos.ApiGet('TENANT_SUBSCRIBER')
+        assert_not_equal(result, None)
+        subId = self.restApiXos.getSubscriberId(result, volt_subscriber_info['account_num'])
+        return subId
+
+    def vsg_xos_subscriber_create(self, index, subscriber_info = None, volt_subscriber_info = None):
+        if self.on_pod is False:
+            return ''
+        if subscriber_info is None:
+            subscriber_info = self.subscriber_info[index]
+        if volt_subscriber_info is None:
+            volt_subscriber_info = self.volt_subscriber_info[index]
+        s_tag = int(volt_subscriber_info['voltTenant']['s_tag'])
+        c_tag = int(volt_subscriber_info['voltTenant']['c_tag'])
+        vcpe = 'vcpe-{}-{}'.format(s_tag, c_tag)
+        log.info('Creating tenant with s_tag: %d, c_tag: %d' %(s_tag, c_tag))
+        subId = ''
+        try:
+            result = self.restApiXos.ApiPost('TENANT_SUBSCRIBER', subscriber_info)
+            assert_equal(result, True)
+            result = self.restApiXos.ApiGet('TENANT_SUBSCRIBER')
+            assert_not_equal(result, None)
+            subId = self.restApiXos.getSubscriberId(result, volt_subscriber_info['account_num'])
+            assert_not_equal(subId, '0')
+            log.info('Subscriber ID for account num %s = %s' %(str(volt_subscriber_info['account_num']), subId))
+            volt_tenant = volt_subscriber_info['voltTenant']
+            #update the subscriber id in the tenant info before making the rest
+            volt_tenant['subscriber'] = subId
+            result = self.restApiXos.ApiPost('TENANT_VOLT', volt_tenant)
+            assert_equal(result, True)
+            #if the vsg instance was already instantiated, then reduce delay
+            if c_tag % self.subscribers_per_s_tag == 0:
+                delay = 350
+            else:
+                delay = 90
+            log.info('Delaying %d seconds for the VCPE to be provisioned' %(delay))
+            time.sleep(delay)
+            log.info('Testing for external connectivity to VCPE %s' %(vcpe))
+            self.vsg_for_external_connectivity(index)
+        finally:
+            return subId
+
+    def vsg_xos_subscriber_delete(self, index, subId = '', voltId = '', subscriber_info = None, volt_subscriber_info = None):
+        if self.on_pod is False:
+            return
+        if subscriber_info is None:
+            subscriber_info = self.subscriber_info[index]
+        if volt_subscriber_info is None:
+            volt_subscriber_info = self.volt_subscriber_info[index]
+        s_tag = int(volt_subscriber_info['voltTenant']['s_tag'])
+        c_tag = int(volt_subscriber_info['voltTenant']['c_tag'])
+        vcpe = 'vcpe-{}-{}'.format(s_tag, c_tag)
+        log.info('Deleting tenant with s_tag: %d, c_tag: %d' %(s_tag, c_tag))
+        if not subId:
+            #get the subscriber id first
+            result = self.restApiXos.ApiGet('TENANT_SUBSCRIBER')
+            assert_not_equal(result, None)
+            subId = self.restApiXos.getSubscriberId(result, volt_subscriber_info['account_num'])
+            assert_not_equal(subId, '0')
+        if not voltId:
+            #get the volt id for the subscriber
+            result = self.restApiXos.ApiGet('TENANT_VOLT')
+            assert_not_equal(result, None)
+            voltId = self.getVoltId(result, subId)
+            assert_not_equal(voltId, None)
+        log.info('Deleting subscriber ID %s for account num %s' %(subId, str(volt_subscriber_info['account_num'])))
+        status = self.restApiXos.ApiDelete('TENANT_SUBSCRIBER', subId)
+        assert_equal(status, True)
+        #Delete the tenant
+        log.info('Deleting VOLT Tenant ID %s for subscriber %s' %(voltId, subId))
+        self.restApiXos.ApiDelete('TENANT_VOLT', voltId)
+
+    def test_scale_for_vsg_vm_creations(self):
+        for index in xrange(len(self.subscriber_info)):
+            #check if the index exists
+            subId = self.vsg_xos_subscriber_id(index)
+            log.info('test_vsg_xos_subscriber_creation')
+            if subId and subId != '0':
+                self.vsg_xos_subscriber_delete(index, subId = subId)
+            subId = self.vsg_xos_subscriber_create(index)
+            log.info('Created Subscriber %s' %(subId))
+
+    def test_scale_for_vcpe_creations(self):
+        for index in xrange(len(self.subscriber_info)):
+            #check if the index exists
+            subId = self.vsg_xos_subscriber_id(index)
+            log.info('test_vsg_xos_subscriber_creation')
+            if subId and subId != '0':
+                self.vsg_xos_subscriber_delete(index, subId = subId)
+            subId = self.vsg_xos_subscriber_create(index)
+            log.info('Created Subscriber %s' %(subId))
+
+    def test_scale_of_subcriber_vcpe_creations_in_single_vsg_vm(self):
+        subId = self.vsg_xos_subscriber_create(100)
+        if subId and subId != '0':
+            self.vsg_xos_subscriber_delete(100, subId)
+
+    def test_scale_for_cord_subscriber_creation_and_deletion(self):
+        subId = self.vsg_xos_subscriber_create(100)
+        if subId and subId != '0':
+            self.vsg_xos_subscriber_delete(100, subId)
+
+    def test_cord_for_scale_of_subscriber_containers_per_compute_node(self):
+        pass
+