diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 06841e1..0066a73 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -537,6 +537,27 @@
         routers = self.network_client.list_routers()
         return routers['routers']
 
+    def _list_ports(self):
+        ports = self.network_client.list_ports()
+        return ports['ports']
+
+    def _get_tenant_own_network_num(self, tenant_id):
+        nets = self._list_networks()
+        ownnets = [value for value in nets if tenant_id == value['tenant_id']]
+        return len(ownnets)
+
+    def _get_tenant_own_subnet_num(self, tenant_id):
+        subnets = self._list_subnets()
+        ownsubnets = ([value for value in subnets
+                      if tenant_id == value['tenant_id']])
+        return len(ownsubnets)
+
+    def _get_tenant_own_port_num(self, tenant_id):
+        ports = self._list_ports()
+        ownports = ([value for value in ports
+                    if tenant_id == value['tenant_id']])
+        return len(ownports)
+
     def _create_subnet(self, network, namestart='subnet-smoke-'):
         """
         Create a subnet for the given network within the cidr block
@@ -801,6 +822,18 @@
 
         return rules
 
+    def _show_quota_network(self, tenant_id):
+        quota = self.network_client.show_quota(tenant_id)
+        return quota['quota']['network']
+
+    def _show_quota_subnet(self, tenant_id):
+        quota = self.network_client.show_quota(tenant_id)
+        return quota['quota']['subnet']
+
+    def _show_quota_port(self, tenant_id):
+        quota = self.network_client.show_quota(tenant_id)
+        return quota['quota']['port']
+
 
 class OrchestrationScenarioTest(OfficialClientTest):
     """
diff --git a/tempest/scenario/test_network_quotas.py b/tempest/scenario/test_network_quotas.py
index 3268066..cb7aa0b 100644
--- a/tempest/scenario/test_network_quotas.py
+++ b/tempest/scenario/test_network_quotas.py
@@ -20,8 +20,6 @@
 from tempest.scenario.manager import NetworkScenarioTest
 from tempest.test import services
 
-MAX_REASONABLE_ITERATIONS = 51  # more than enough. Default for port is 50.
-
 
 class TestNetworkQuotaBasic(NetworkScenarioTest):
     """
@@ -46,7 +44,9 @@
     @services('network')
     def test_create_network_until_quota_hit(self):
         hit_limit = False
-        for n in xrange(MAX_REASONABLE_ITERATIONS):
+        networknum = self._get_tenant_own_network_num(self.tenant_id)
+        max = self._show_quota_network(self.tenant_id) - networknum
+        for n in xrange(max):
             try:
                 self.networks.append(
                     self._create_network(self.tenant_id,
@@ -56,6 +56,16 @@
                     raise
                 hit_limit = True
                 break
+        self.assertFalse(hit_limit, "Failed: Hit quota limit !")
+
+        try:
+            self.networks.append(
+                self._create_network(self.tenant_id,
+                                     namestart='network-quotatest-'))
+        except exc.NeutronClientException as e:
+            if (e.status_code != 409):
+                raise
+            hit_limit = True
         self.assertTrue(hit_limit, "Failed: Did not hit quota limit !")
 
     @services('network')
@@ -65,7 +75,9 @@
                 self._create_network(self.tenant_id,
                                      namestart='network-quotatest-'))
         hit_limit = False
-        for n in xrange(MAX_REASONABLE_ITERATIONS):
+        subnetnum = self._get_tenant_own_subnet_num(self.tenant_id)
+        max = self._show_quota_subnet(self.tenant_id) - subnetnum
+        for n in xrange(max):
             try:
                 self.subnets.append(
                     self._create_subnet(self.networks[0],
@@ -75,6 +87,16 @@
                     raise
                 hit_limit = True
                 break
+        self.assertFalse(hit_limit, "Failed: Hit quota limit !")
+
+        try:
+            self.subnets.append(
+                self._create_subnet(self.networks[0],
+                                    namestart='subnet-quotatest-'))
+        except exc.NeutronClientException as e:
+            if (e.status_code != 409):
+                raise
+            hit_limit = True
         self.assertTrue(hit_limit, "Failed: Did not hit quota limit !")
 
     @services('network')
@@ -84,7 +106,9 @@
                 self._create_network(self.tenant_id,
                                      namestart='network-quotatest-'))
         hit_limit = False
-        for n in xrange(MAX_REASONABLE_ITERATIONS):
+        portnum = self._get_tenant_own_port_num(self.tenant_id)
+        max = self._show_quota_port(self.tenant_id) - portnum
+        for n in xrange(max):
             try:
                 self.ports.append(
                     self._create_port(self.networks[0],
@@ -94,4 +118,14 @@
                     raise
                 hit_limit = True
                 break
+        self.assertFalse(hit_limit, "Failed: Hit quota limit !")
+
+        try:
+            self.ports.append(
+                self._create_port(self.networks[0],
+                                  namestart='port-quotatest-'))
+        except exc.NeutronClientException as e:
+            if (e.status_code != 409):
+                raise
+            hit_limit = True
         self.assertTrue(hit_limit, "Failed: Did not hit quota limit !")