diff --git a/run_tests.sh b/run_tests.sh
index 970da51..5c8ce7d 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -63,7 +63,7 @@
     -l|--logging) logging=1;;
     -L|--logging-config) logging_config=$2; shift;;
     --) [ "yes" == "$first_uu" ] || testrargs="$testrargs $1"; first_uu=no  ;;
-    *) testrargs="$testrargs $1"
+    *) testrargs="$testrargs $1"; noseargs+=" $1" ;;
   esac
   shift
 done
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index f55f152..e744200 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -52,15 +52,6 @@
                                      'instances', 'security_group_rules',
                                      'cores', 'security_groups'))
 
-    @classmethod
-    def tearDownClass(cls):
-        for server in cls.servers:
-            try:
-                cls.servers_client.delete_server(server['id'])
-            except exceptions.NotFound:
-                continue
-        super(QuotasAdminTestJSON, cls).tearDownClass()
-
     @attr(type='smoke')
     def test_get_default_quotas(self):
         # Admin can get the default resource quota set for a tenant
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index c707c64..97e0e69 100644
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -34,11 +34,8 @@
     def setUpClass(cls):
         super(ServersAdminTestJSON, cls).setUpClass()
         cls.client = cls.os_adm.servers_client
-        cls.flavors_client = cls.os_adm.flavors_client
-
         cls.non_adm_client = cls.servers_client
         cls.flavors_client = cls.os_adm.flavors_client
-
         cls.identity_client = cls._get_identity_admin_client()
         tenant = cls.identity_client.get_tenant_by_name(
             cls.client.tenant_name)
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 0b527d9..885adcf 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -100,6 +100,19 @@
                 pass
 
     @classmethod
+    def rebuild_server(cls, **kwargs):
+        # Destroy an existing server and creates a new one
+        try:
+            cls.servers_client.delete_server(cls.server_id)
+            cls.servers_client.wait_for_server_termination(cls.server_id)
+        except Exception as exc:
+            LOG.exception(exc)
+            pass
+        resp, server = cls.create_server(wait_until='ACTIVE', **kwargs)
+        cls.server_id = server['id']
+        cls.password = server['adminPass']
+
+    @classmethod
     def clear_images(cls):
         for image_id in cls.images:
             try:
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 6f646b2..5b46792 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -44,13 +44,13 @@
             self.client.wait_for_server_status(self.server_id, 'ACTIVE')
         except Exception:
             # Rebuild server if something happened to it during a test
-            self.rebuild_servers()
+            self.rebuild_server()
 
     @classmethod
     def setUpClass(cls):
         super(ServerActionsTestJSON, cls).setUpClass()
         cls.client = cls.servers_client
-        cls.rebuild_servers()
+        cls.rebuild_server()
 
     @testtools.skipUnless(compute.CHANGE_PASSWORD_AVAILABLE,
                           'Change password not available.')
@@ -286,14 +286,6 @@
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(self.server_id, 'ACTIVE')
 
-    @classmethod
-    def rebuild_servers(cls):
-        # Destroy any existing server and creates a new one
-        cls.clear_servers()
-        resp, server = cls.create_server(wait_until='ACTIVE')
-        cls.server_id = server['id']
-        cls.password = server['adminPass']
-
     @attr(type='gate')
     def test_stop_start_server(self):
         resp, server = self.servers_client.stop(self.server_id)
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 5d9a5ce..c896224 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -28,6 +28,13 @@
 class ServersNegativeTestJSON(base.BaseComputeTest):
     _interface = 'json'
 
+    def setUp(self):
+        super(ServersNegativeTestJSON, self).setUp()
+        try:
+            self.client.wait_for_server_status(self.server_id, 'ACTIVE')
+        except Exception:
+            self.rebuild_server()
+
     @classmethod
     def setUpClass(cls):
         super(ServersNegativeTestJSON, cls).setUpClass()
@@ -35,6 +42,8 @@
         cls.img_client = cls.images_client
         cls.alt_os = clients.AltManager()
         cls.alt_client = cls.alt_os.servers_client
+        resp, server = cls.create_server(wait_until='ACTIVE')
+        cls.server_id = server['id']
 
     @attr(type=['negative', 'gate'])
     def test_server_name_blank(self):
@@ -92,8 +101,6 @@
     @attr(type=['negative', 'gate'])
     def test_reboot_deleted_server(self):
         # Reboot a deleted server
-        resp, server = self.create_server()
-        self.server_id = server['id']
         self.client.delete_server(self.server_id)
         self.client.wait_for_server_termination(self.server_id)
         self.assertRaises(exceptions.NotFound, self.client.reboot,
@@ -102,8 +109,6 @@
     @attr(type=['negative', 'gate'])
     def test_pause_paused_server(self):
         # Pause a paused server.
-        resp, server = self.create_server(wait_until='ACTIVE')
-        self.server_id = server['id']
         self.client.pause_server(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'PAUSED')
         self.assertRaises(exceptions.Duplicate,
@@ -113,9 +118,6 @@
     @attr(type=['negative', 'gate'])
     def test_rebuild_deleted_server(self):
         # Rebuild a deleted server
-
-        resp, server = self.create_server()
-        self.server_id = server['id']
         self.client.delete_server(self.server_id)
         self.client.wait_for_server_termination(self.server_id)
 
@@ -195,21 +197,19 @@
     def test_update_server_of_another_tenant(self):
         # Update name of a server that belongs to another tenant
 
-        resp, server = self.create_server(wait_until='ACTIVE')
-        new_name = server['id'] + '_new'
+        new_name = self.server_id + '_new'
         self.assertRaises(exceptions.NotFound,
-                          self.alt_client.update_server, server['id'],
+                          self.alt_client.update_server, self.server_id,
                           name=new_name)
 
     @attr(type=['negative', 'gate'])
     def test_update_server_name_length_exceeds_256(self):
         # Update name of server exceed the name length limit
 
-        resp, server = self.create_server(wait_until='ACTIVE')
         new_name = 'a' * 256
         self.assertRaises(exceptions.BadRequest,
                           self.client.update_server,
-                          server['id'],
+                          self.server_id,
                           name=new_name)
 
     @attr(type=['negative', 'gate'])
@@ -222,10 +222,9 @@
     @attr(type=['negative', 'gate'])
     def test_delete_a_server_of_another_tenant(self):
         # Delete a server that belongs to another tenant
-        resp, server = self.create_server(wait_until='ACTIVE')
         self.assertRaises(exceptions.NotFound,
                           self.alt_client.delete_server,
-                          server['id'])
+                          self.server_id)
 
     @attr(type=['negative', 'gate'])
     def test_delete_server_pass_negative_id(self):
@@ -277,11 +276,9 @@
     @attr(type=['negative', 'gate'])
     def test_unpause_server_invalid_state(self):
         # unpause an active server.
-        resp, server = self.create_server(wait_until='ACTIVE')
-        server_id = server['id']
         self.assertRaises(exceptions.Duplicate,
                           self.client.unpause_server,
-                          server_id)
+                          self.server_id)
 
     @attr(type=['negative', 'gate'])
     def test_suspend_non_existent_server(self):
@@ -291,17 +288,13 @@
 
     @attr(type=['negative', 'gate'])
     def test_suspend_server_invalid_state(self):
-        # create server.
-        resp, server = self.create_server(wait_until='ACTIVE')
-        server_id = server['id']
-
         # suspend a suspended server.
-        resp, _ = self.client.suspend_server(server_id)
+        resp, _ = self.client.suspend_server(self.server_id)
         self.assertEqual(202, resp.status)
-        self.client.wait_for_server_status(server_id, 'SUSPENDED')
+        self.client.wait_for_server_status(self.server_id, 'SUSPENDED')
         self.assertRaises(exceptions.Duplicate,
                           self.client.suspend_server,
-                          server_id)
+                          self.server_id)
 
     @attr(type=['negative', 'gate'])
     def test_resume_non_existent_server(self):
@@ -311,14 +304,10 @@
 
     @attr(type=['negative', 'gate'])
     def test_resume_server_invalid_state(self):
-        # create server.
-        resp, server = self.create_server(wait_until='ACTIVE')
-        server_id = server['id']
-
         # resume an active server.
         self.assertRaises(exceptions.Duplicate,
                           self.client.resume_server,
-                          server_id)
+                          self.server_id)
 
 
 class ServersNegativeTestXML(ServersNegativeTestJSON):
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index cfac257..c3a66c5 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -56,6 +56,7 @@
         cls.networks = []
         cls.subnets = []
         cls.ports = []
+        cls.routers = []
         cls.pools = []
         cls.vips = []
         cls.members = []
@@ -73,6 +74,8 @@
             cls.client.delete_pool(pool['id'])
         for port in cls.ports:
             cls.client.delete_port(port['id'])
+        for router in cls.routers:
+            cls.client.delete_router(router['id'])
         for subnet in cls.subnets:
             cls.client.delete_subnet(subnet['id'])
         for network in cls.networks:
@@ -125,6 +128,21 @@
         return port
 
     @classmethod
+    def create_router(cls, router_name=None, admin_state_up=False,
+                      external_network_id=None, enable_snat=None):
+        ext_gw_info = {}
+        if external_network_id:
+            ext_gw_info['network_id'] = external_network_id
+        if enable_snat:
+            ext_gw_info['enable_snat'] = enable_snat
+        resp, body = cls.client.create_router(
+            router_name, external_gateway_info=ext_gw_info,
+            admin_state_up=admin_state_up)
+        router = body['router']
+        cls.routers.append(router)
+        return router
+
+    @classmethod
     def create_pool(cls, name, lb_method, protocol, subnet):
         """Wrapper utility that returns a test pool."""
         resp, body = cls.client.create_pool(name, lb_method, protocol,
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index ca2c879..9acb6c5 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -47,11 +47,9 @@
         # Create network, subnet, router and add interface
         cls.network = cls.create_network()
         cls.subnet = cls.create_subnet(cls.network)
-        resp, router = cls.client.create_router(
+        cls.router = cls.create_router(
             rand_name('router-'),
-            external_gateway_info={"network_id":
-                                   cls.network_cfg.public_network_id})
-        cls.router = router['router']
+            external_network_id=cls.network_cfg.public_network_id)
         resp, _ = cls.client.add_router_interface_with_subnet_id(
             cls.router['id'], cls.subnet['id'])
         cls.port = list()
@@ -66,7 +64,6 @@
                                                           cls.subnet['id'])
         for i in range(2):
             cls.client.delete_port(cls.port[i]['id'])
-        cls.client.delete_router(cls.router['id'])
         super(FloatingIPTestJSON, cls).tearDownClass()
 
     def _delete_floating_ip(self, floating_ip_id):
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 8b939fe..2cfbf61 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -52,6 +52,8 @@
     @attr(type='smoke')
     def test_create_show_list_update_delete_router(self):
         # Create a router
+        # NOTE(salv-orlando): Do not invoke self.create_router
+        # as we need to check the response code
         name = rand_name('router-')
         resp, create_body = self.client.create_router(
             name, external_gateway_info={
@@ -94,41 +96,37 @@
     def test_add_remove_router_interface_with_subnet_id(self):
         network = self.create_network()
         subnet = self.create_subnet(network)
-        name = rand_name('router-')
-        resp, create_body = self.client.create_router(name)
-        self.addCleanup(self.client.delete_router, create_body['router']['id'])
+        router = self.create_router(rand_name('router-'))
         # Add router interface with subnet id
         resp, interface = self.client.add_router_interface_with_subnet_id(
-            create_body['router']['id'], subnet['id'])
+            router['id'], subnet['id'])
         self.assertEqual('200', resp['status'])
         self.addCleanup(self._remove_router_interface_with_subnet_id,
-                        create_body['router']['id'], subnet['id'])
+                        router['id'], subnet['id'])
         self.assertTrue('subnet_id' in interface.keys())
         self.assertTrue('port_id' in interface.keys())
         # Verify router id is equal to device id in port details
         resp, show_port_body = self.client.show_port(
             interface['port_id'])
         self.assertEqual(show_port_body['port']['device_id'],
-                         create_body['router']['id'])
+                         router['id'])
 
     @attr(type='smoke')
     def test_add_remove_router_interface_with_port_id(self):
         network = self.create_network()
         self.create_subnet(network)
-        name = rand_name('router-')
-        resp, create_body = self.client.create_router(name)
-        self.addCleanup(self.client.delete_router, create_body['router']['id'])
+        router = self.create_router(rand_name('router-'))
         resp, port_body = self.client.create_port(network['id'])
         # add router interface to port created above
         resp, interface = self.client.add_router_interface_with_port_id(
-            create_body['router']['id'], port_body['port']['id'])
+            router['id'], port_body['port']['id'])
         self.assertEqual('200', resp['status'])
         self.addCleanup(self._remove_router_interface_with_port_id,
-                        create_body['router']['id'], port_body['port']['id'])
+                        router['id'], port_body['port']['id'])
         self.assertTrue('subnet_id' in interface.keys())
         self.assertTrue('port_id' in interface.keys())
         # Verify router id is equal to device id in port details
         resp, show_port_body = self.client.show_port(
             interface['port_id'])
         self.assertEqual(show_port_body['port']['device_id'],
-                         create_body['router']['id'])
+                         router['id'])
diff --git a/tempest/api/network/test_security_groups.py b/tempest/api/network/test_security_groups.py
index 60ca88a..914dcff 100644
--- a/tempest/api/network/test_security_groups.py
+++ b/tempest/api/network/test_security_groups.py
@@ -16,7 +16,7 @@
 #    under the License.
 
 from tempest.api.network import base
-from tempest.common.utils.data_utils import rand_name
+from tempest.common.utils import data_utils
 from tempest import exceptions
 from tempest.test import attr
 
@@ -66,9 +66,9 @@
         self.assertIsNotNone(found, msg)
 
     @attr(type='smoke')
-    def test_create_show_delete_security_group_and_rule(self):
+    def test_create_show_delete_security_group(self):
         # Create a security group
-        name = rand_name('secgroup-')
+        name = data_utils.rand_name('secgroup-')
         resp, group_create_body = self.client.create_security_group(name)
         self.assertEqual('201', resp['status'])
         self.addCleanup(self._delete_security_group,
@@ -88,14 +88,29 @@
         for secgroup in list_body['security_groups']:
             secgroup_list.append(secgroup['id'])
         self.assertIn(group_create_body['security_group']['id'], secgroup_list)
-        # No Update in security group
-        # Create rule
-        resp, rule_create_body = self.client.create_security_group_rule(
-            group_create_body['security_group']['id']
-        )
+
+    @attr(type='smoke')
+    def test_create_show_delete_security_group_rule(self):
+        # Create a security group
+        name = data_utils.rand_name('secgroup-')
+        resp, group_create_body = self.client.create_security_group(name)
         self.assertEqual('201', resp['status'])
-        self.addCleanup(self._delete_security_group_rule,
-                        rule_create_body['security_group_rule']['id'])
+        self.addCleanup(self._delete_security_group,
+                        group_create_body['security_group']['id'])
+        self.assertEqual(group_create_body['security_group']['name'], name)
+
+        # Create rules for each protocol
+        protocols = ['tcp', 'udp', 'icmp']
+        for protocol in protocols:
+            resp, rule_create_body = self.client.create_security_group_rule(
+                group_create_body['security_group']['id'],
+                protocol=protocol
+            )
+            self.assertEqual('201', resp['status'])
+            self.addCleanup(self._delete_security_group_rule,
+                            rule_create_body['security_group_rule']['id']
+                            )
+
         # Show details of the created security rule
         resp, show_rule_body = self.client.show_security_group_rule(
             rule_create_body['security_group_rule']['id']
@@ -111,13 +126,13 @@
 
     @attr(type=['negative', 'smoke'])
     def test_show_non_existent_security_group(self):
-        non_exist_id = rand_name('secgroup-')
+        non_exist_id = data_utils.rand_name('secgroup-')
         self.assertRaises(exceptions.NotFound, self.client.show_security_group,
                           non_exist_id)
 
     @attr(type=['negative', 'smoke'])
     def test_show_non_existent_security_group_rule(self):
-        non_exist_id = rand_name('rule-')
+        non_exist_id = data_utils.rand_name('rule-')
         self.assertRaises(exceptions.NotFound,
                           self.client.show_security_group_rule,
                           non_exist_id)
diff --git a/tempest/cli/simple_read_only/test_compute.py b/tempest/cli/simple_read_only/test_nova.py
similarity index 100%
rename from tempest/cli/simple_read_only/test_compute.py
rename to tempest/cli/simple_read_only/test_nova.py
diff --git a/tempest/cli/simple_read_only/test_compute_manage.py b/tempest/cli/simple_read_only/test_nova_manage.py
similarity index 100%
rename from tempest/cli/simple_read_only/test_compute_manage.py
rename to tempest/cli/simple_read_only/test_nova_manage.py
diff --git a/tox.ini b/tox.ini
index ff09b3f..cf41586 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,14 @@
 [tox]
 envlist = pep8
+minversion = 1.6
+skipsdist = True
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
          LANG=en_US.UTF-8
          LANGUAGE=en_US:en
          LC_ALL=C
+usedevelop = True
 
 [testenv:all]
 sitepackages = True
@@ -15,7 +18,6 @@
 
 [testenv:full]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 # The regex below is used to select which tests to run and exclude the slow tag:
 # See the testrepostiory bug: https://bugs.launchpad.net/testrepository/+bug/1208610
 commands =
@@ -23,21 +25,18 @@
 
 [testenv:testr-full]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 commands =
   sh tools/pretty_tox.sh '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario|thirdparty|cli|tests)) {posargs}'
 
 [testenv:heat-slow]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
-         OS_TEST_TIMEOUT=1200
+setenv = OS_TEST_TIMEOUT=1200
 # The regex below is used to select heat api/scenario tests tagged as slow.
 commands =
   sh tools/pretty_tox_serial.sh '(?=.*\[.*\bslow\b.*\])(^tempest\.(api|scenario)\.orchestration) {posargs}'
 
 [testenv:large-ops]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 commands =
   python setup.py testr --slowest --testr-args='tempest.scenario.test_large_ops {posargs}'
 
@@ -69,7 +68,6 @@
 
 [testenv:smoke]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 # This is still serial because neutron doesn't work with parallel. See:
 # https://bugs.launchpad.net/tempest/+bug/1216076 so the neutron smoke
 # job would fail if we moved it to parallel.
@@ -78,7 +76,6 @@
 
 [testenv:coverage]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 commands =
    python -m tools/tempest_coverage -c start --combine
    sh tools/pretty_tox.sh '(?!.*\[.*\bslow\b.*\])(^tempest\.(api|scenario|thirdparty|cli|tests))'
@@ -86,7 +83,6 @@
 
 [testenv:stress]
 sitepackages = True
-setenv = VIRTUAL_ENV={envdir}
 commands =
     python -m tempest/stress/run_stress -a -d 3600 -S