diff --git a/tempest/scenario/test_load_balancer_basic.py b/tempest/scenario/test_load_balancer_basic.py
index 2f7d9d9..5bcdacd 100644
--- a/tempest/scenario/test_load_balancer_basic.py
+++ b/tempest/scenario/test_load_balancer_basic.py
@@ -61,12 +61,8 @@
         super(TestLoadBalancerBasic, cls).setUpClass()
         cls.check_preconditions()
         cls.security_groups = {}
-        cls.networks = []
-        cls.subnets = []
         cls.servers_keypairs = {}
-        cls.pools = []
         cls.members = []
-        cls.vips = []
         cls.floating_ips = {}
         cls.port1 = 80
         cls.port2 = 88
@@ -80,21 +76,19 @@
         name = data_utils.rand_name("smoke_server-")
         keypair = self.create_keypair(name='keypair-%s' % name)
         security_groups = [self.security_groups[tenant_id].name]
-        nets = self.network_client.list_networks()
-        for net in nets['networks']:
-            if net['tenant_id'] == self.tenant_id:
-                self.networks.append(net)
-                create_kwargs = {
-                    'nics': [
-                        {'net-id': net['id']},
-                    ],
-                    'key_name': keypair.name,
-                    'security_groups': security_groups,
-                }
-                server = self.create_server(name=name,
-                                            create_kwargs=create_kwargs)
-                self.servers_keypairs[server] = keypair
-                break
+        net = self.list_networks(tenant_id=self.tenant_id)[0]
+        self.network = net_common.DeletableNetwork(client=self.network_client,
+                                                   **net['network'])
+        create_kwargs = {
+            'nics': [
+                {'net-id': self.network.id},
+            ],
+            'key_name': keypair.name,
+            'security_groups': security_groups,
+        }
+        server = self.create_server(name=name,
+                                    create_kwargs=create_kwargs)
+        self.servers_keypairs[server] = keypair
         self.assertTrue(self.servers_keypairs)
 
     def _start_servers(self):
@@ -105,7 +99,7 @@
         for server in self.servers_keypairs.keys():
             ssh_login = config.compute.image_ssh_user
             private_key = self.servers_keypairs[server].private_key
-            network_name = self.networks[0]['name']
+            network_name = self.network.name
 
             ip_address = server.networks[network_name][0]
             ssh_client = ssh.Client(ip_address, ssh_login,
@@ -138,17 +132,15 @@
 
     def _create_pool(self):
         """Create a pool with ROUND_ROBIN algorithm."""
-        subnets = self.network_client.list_subnets()
-        for subnet in subnets['subnets']:
-            if subnet['tenant_id'] == self.tenant_id:
-                self.subnets.append(subnet)
-                pool = super(TestLoadBalancerBasic, self)._create_pool(
-                    'ROUND_ROBIN',
-                    'HTTP',
-                    subnet['id'])
-                self.pools.append(pool)
-                break
-        self.assertTrue(self.pools)
+        # get tenant subnet and verify there's only one
+        subnet = self._list_subnets(tenant_id=self.tenant_id)[0]
+        self.subnet = net_common.DeletableSubnet(client=self.network_client,
+                                                 **subnet['subnet'])
+        self.pool = super(TestLoadBalancerBasic, self)._create_pool(
+            'ROUND_ROBIN',
+            'HTTP',
+            self.subnet.id)
+        self.assertTrue(self.pool)
 
     def _create_members(self, network_name, server_ids):
         """
@@ -161,7 +153,7 @@
         for server in servers:
             if server.id in server_ids:
                 ip = server.networks[network_name][0]
-                pool_id = self.pools[0]['id']
+                pool_id = self.pool.id
                 if len(set(server_ids)) == 1 or len(servers) == 1:
                     member1 = self._create_member(ip, self.port1, pool_id)
                     member2 = self._create_member(ip, self.port2, pool_id)
@@ -173,28 +165,27 @@
 
     def _assign_floating_ip_to_vip(self, vip):
         public_network_id = config.network.public_network_id
-        port_id = vip['port_id']
+        port_id = vip.port_id
         floating_ip = self._create_floating_ip(vip, public_network_id,
                                                port_id=port_id)
-        self.floating_ips.setdefault(vip['id'], [])
-        self.floating_ips[vip['id']].append(floating_ip)
+        self.floating_ips.setdefault(vip.id, [])
+        self.floating_ips[vip.id].append(floating_ip)
 
     def _create_load_balancer(self):
         self._create_pool()
-        self._create_members(self.networks[0]['name'],
+        self._create_members(self.network.name,
                              [self.servers_keypairs.keys()[0].id])
-        subnet_id = self.subnets[0]['id']
-        pool_id = self.pools[0]['id']
-        vip = super(TestLoadBalancerBasic, self)._create_vip('HTTP', 80,
-                                                             subnet_id,
-                                                             pool_id)
-        self.vips.append(vip)
+        subnet_id = self.subnet.id
+        pool_id = self.pool.id
+        self.vip = super(TestLoadBalancerBasic, self)._create_vip('HTTP', 80,
+                                                                  subnet_id,
+                                                                  pool_id)
         self._status_timeout(NeutronRetriever(self.network_client,
                                               self.network_client.vip_path,
                                               net_common.DeletableVip),
-                             self.vips[0]['id'],
+                             self.vip.id,
                              expected_status='ACTIVE')
-        self._assign_floating_ip_to_vip(self.vips[0])
+        self._assign_floating_ip_to_vip(self.vip)
 
     def _check_load_balancing(self):
         """
@@ -204,9 +195,8 @@
            of the requests
         """
 
-        vip = self.vips[0]
-        floating_ip_vip = self.floating_ips[
-            vip['id']][0]['floating_ip_address']
+        vip = self.vip
+        floating_ip_vip = self.floating_ips[vip.id][0]['floating_ip_address']
         self._check_connection(floating_ip_vip)
         resp = []
         for count in range(10):
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index a4002d4..998a474 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -13,6 +13,7 @@
 #    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 collections
 
 from tempest.common import debug
 from tempest.common.utils import data_utils
@@ -24,6 +25,9 @@
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
 
+Floating_IP_tuple = collections.namedtuple('Floating_IP_tuple',
+                                           ['floating_ip', 'server'])
+
 
 class TestNetworkBasicOps(manager.NetworkScenarioTest):
 
@@ -134,7 +138,7 @@
         serv_dict = self._create_server(name, self.network)
         self.servers[serv_dict['server']] = serv_dict['keypair']
         self._check_tenant_network_connectivity()
-        self.floating_ips = {}
+
         self._create_and_associate_floating_ips()
 
     def check_networks(self):
@@ -178,11 +182,6 @@
         self.addCleanup(self.cleanup_wrapper, server)
         return dict(server=server, keypair=keypair)
 
-    def _create_servers(self):
-        for i, network in enumerate(self.networks):
-            name = data_utils.rand_name('server-smoke-%d-' % i)
-            self._create_server(name, network)
-
     def _check_tenant_network_connectivity(self):
         if not CONF.network.tenant_networks_reachable:
             msg = 'Tenant networks not configured to be reachable.'
@@ -207,7 +206,7 @@
         public_network_id = CONF.network.public_network_id
         for server in self.servers.keys():
             floating_ip = self._create_floating_ip(server, public_network_id)
-            self.floating_ips[floating_ip] = server
+            self.floating_ip_tuple = Floating_IP_tuple(floating_ip, server)
             self.addCleanup(self.cleanup_wrapper, floating_ip)
 
     def _check_public_network_connectivity(self, should_connect=True,
@@ -216,16 +215,16 @@
         # key-based authentication by cloud-init.
         ssh_login = CONF.compute.image_ssh_user
         LOG.debug('checking network connections')
+        floating_ip, server = self.floating_ip_tuple
+        ip_address = floating_ip.floating_ip_address
+        private_key = None
+        if should_connect:
+            private_key = self.servers[server].private_key
         try:
-            for floating_ip, server in self.floating_ips.iteritems():
-                ip_address = floating_ip.floating_ip_address
-                private_key = None
-                if should_connect:
-                    private_key = self.servers[server].private_key
-                self._check_vm_connectivity(ip_address,
-                                            ssh_login,
-                                            private_key,
-                                            should_connect=should_connect)
+            self._check_vm_connectivity(ip_address,
+                                        ssh_login,
+                                        private_key,
+                                        should_connect=should_connect)
         except Exception:
             ex_msg = 'Public network connectivity check failed'
             if msg:
@@ -236,18 +235,20 @@
             raise
 
     def _disassociate_floating_ips(self):
-        for floating_ip, server in self.floating_ips.iteritems():
-            self._disassociate_floating_ip(floating_ip)
-            self.floating_ips[floating_ip] = None
+        floating_ip, server = self.floating_ip_tuple
+        self._disassociate_floating_ip(floating_ip)
+        self.floating_ip_tuple = Floating_IP_tuple(
+            floating_ip, None)
 
     def _reassociate_floating_ips(self):
-        for floating_ip in self.floating_ips.keys():
-            name = data_utils.rand_name('new_server-smoke-')
-            # create a new server for the floating ip
-            serv_dict = self._create_server(name, self.network)
-            self.servers[serv_dict['server']] = serv_dict['keypair']
-            self._associate_floating_ip(floating_ip, serv_dict['server'])
-            self.floating_ips[floating_ip] = serv_dict['server']
+        floating_ip, server = self.floating_ip_tuple
+        name = data_utils.rand_name('new_server-smoke-')
+        # create a new server for the floating ip
+        serv_dict = self._create_server(name, self.network)
+        self.servers[serv_dict['server']] = serv_dict['keypair']
+        self._associate_floating_ip(floating_ip, serv_dict['server'])
+        self.floating_ip_tuple = Floating_IP_tuple(
+            floating_ip, serv_dict['server'])
 
     @test.attr(type='smoke')
     @test.services('compute', 'network')
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index 8e4192d..a26e0cf 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -148,9 +148,6 @@
         cls.check_preconditions()
         # TODO(mnewby) Consider looking up entities as needed instead
         # of storing them as collections on the class.
-        cls.networks = []
-        cls.subnets = []
-        cls.routers = []
         cls.floating_ips = {}
         cls.tenants = {}
         cls.primary_tenant = cls.TenantProperties(cls.tenant_id,