diff --git a/neutron_tempest_plugin/scenario/test_internal_dns.py b/neutron_tempest_plugin/scenario/test_internal_dns.py
index c0a2c04..e9f7823 100644
--- a/neutron_tempest_plugin/scenario/test_internal_dns.py
+++ b/neutron_tempest_plugin/scenario/test_internal_dns.py
@@ -13,7 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from oslo_log import log
 from tempest.common import utils
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
 from neutron_tempest_plugin.common import ssh
@@ -21,9 +23,63 @@
 from neutron_tempest_plugin.scenario import base
 
 CONF = config.CONF
+LOG = log.getLogger(__name__)
 
 
-class InternalDNSTest(base.BaseTempestTestCase):
+class InternalDNSBase(base.BaseTempestTestCase):
+    """Base class of useful resources and functionalities for test class."""
+
+    port_error_msg = ('Openstack command returned incorrect '
+                      'hostname value in port.')
+    ssh_error_msg = ('Remote shell command returned incorrect hostname value '
+                     "(command: 'hostname' OR 'cat /etc/hostname').")
+
+    @staticmethod
+    def _rand_name(name):
+        """'data_utils.rand_name' wrapper, show name related to test suite."""
+        return data_utils.rand_name(f'internal-dns-test-{name}')
+
+    @classmethod
+    def resource_setup(cls):
+        super(InternalDNSBase, cls).resource_setup()
+        cls.router = cls.create_router_by_client()
+        cls.keypair = cls.create_keypair(
+            name=cls._rand_name('shared-keypair'))
+        cls.secgroup = cls.create_security_group(
+            name=cls._rand_name('shared-secgroup'))
+        cls.security_groups.append(cls.secgroup)
+        cls.create_loginable_secgroup_rule(
+            secgroup_id=cls.secgroup['id'])
+        cls.vm_kwargs = {
+            'flavor_ref': CONF.compute.flavor_ref,
+            'image_ref': CONF.compute.image_ref,
+            'key_name': cls.keypair['name'],
+            'security_groups': [{'name': cls.secgroup['name']}]
+        }
+
+    def _create_ssh_client(self, ip_addr):
+        return ssh.Client(ip_addr,
+                          CONF.validation.image_ssh_user,
+                          pkey=self.keypair['private_key'])
+
+    def _validate_port_dns_details(self, checked_hostname, checked_port):
+        """Validates reused objects for correct dns values in tests."""
+        dns_details = checked_port['dns_assignment'][0]
+        self.assertEqual(checked_hostname, checked_port['dns_name'],
+                         self.port_error_msg)
+        self.assertEqual(checked_hostname, dns_details['hostname'],
+                         self.port_error_msg)
+        self.assertIn(checked_hostname, dns_details['fqdn'],
+                      self.port_error_msg)
+
+    def _validate_ssh_dns_details(self, checked_hostname, ssh_client):
+        """Validates correct dns values returned from ssh command in tests."""
+        ssh_output = ssh_client.get_hostname()
+        self.assertIn(checked_hostname, ssh_output, self.ssh_error_msg)
+
+
+class InternalDNSTest(InternalDNSBase):
+    """Tests internal DNS capabilities."""
     credentials = ['primary', 'admin']
 
     @utils.requires_ext(extension="dns-integration", service="network")
@@ -52,8 +108,6 @@
             security_groups=[
                 {'name': self.security_groups[-1]['name']}],
             name='leia')
-        self.wait_for_server_active(leia['server'])
-        self.wait_for_guest_os_ready(leia['server'])
 
         ssh_client = ssh.Client(
             self.fip['floating_ip_address'],
@@ -82,3 +136,41 @@
                                        servers=[self.server, leia])
         self.check_remote_connectivity(ssh_client, 'leia.openstackgate.local',
                                        servers=[self.server, leia])
+
+    @utils.requires_ext(extension="dns-integration", service="network")
+    @decorators.idempotent_id('db5e612f-f17f-4974-b5f1-9fe89f4a6fc9')
+    def test_create_port_with_dns_name(self):
+        """Test creation of port with correct internal dns-name (hostname)."""
+
+        # 1) Create network and subnet.
+        # 2) Create a port with dns-name.
+        # 3) Verify that correct port initial dns-name (as VM name)
+        #    were queried from openstack API.
+        # 4) Boot a VM with predefined port.
+        # 5) Validate hostname configured in VM is same as VM's name.
+
+        # NOTE: VM's hostname has to be the same as VM's name
+        #       when a VM is created, it is a known limitation.
+        #       Therefore VM's dns-name/hostname is checked to be as VM's name.
+
+        vm_name = self._rand_name('vm')
+        # create resources
+        network = self.create_network(name=self._rand_name('network'))
+        subnet = self.create_subnet(network, name=self._rand_name('subnet'))
+        self.create_router_interface(self.router['id'], subnet['id'])
+        # create port with dns-name (as VM name)
+        dns_port = self.create_port(network,
+                                    dns_name=vm_name,
+                                    security_groups=[self.secgroup['id']],
+                                    name=self._rand_name('port'))
+        # validate dns port initial hostname from API
+        self._validate_port_dns_details(vm_name, dns_port)
+        # create VM with predefined dns-name on port
+        vm_1 = self.create_server(name=vm_name,
+                                  networks=[{'port': dns_port['id']}],
+                                  **self.vm_kwargs)
+        # validate hostname configured in VM is same as VM's name.
+        vm_1['fip'] = self.create_floatingip(port=dns_port)
+        vm_1['ssh_client'] = self._create_ssh_client(
+            vm_1['fip']['floating_ip_address'])
+        self._validate_ssh_dns_details(vm_name, vm_1['ssh_client'])
diff --git a/neutron_tempest_plugin/scenario/test_mac_learning.py b/neutron_tempest_plugin/scenario/test_mac_learning.py
index 736d46c..6cd894f 100644
--- a/neutron_tempest_plugin/scenario/test_mac_learning.py
+++ b/neutron_tempest_plugin/scenario/test_mac_learning.py
@@ -14,8 +14,10 @@
 #    under the License.
 
 from oslo_log import log
+from paramiko import ssh_exception as ssh_exc
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
+from tempest.lib import exceptions as lib_exc
 
 from neutron_tempest_plugin.common import ssh
 from neutron_tempest_plugin.common import utils
@@ -116,17 +118,22 @@
                                           pkey=self.keypair['private_key'])
         return server
 
-    def _check_cmd_installed_on_server(self, ssh_client, server_id, cmd):
+    def _check_cmd_installed_on_server(self, ssh_client, server, cmd):
         try:
             ssh_client.execute_script('which %s' % cmd)
+        except (lib_exc.SSHTimeout, ssh_exc.AuthenticationException) as ssh_e:
+            LOG.debug(ssh_e)
+            self._log_console_output([server])
+            self._log_local_network_status()
+            raise
         except exceptions.SSHScriptFailed:
             raise self.skipException(
-                "%s is not available on server %s" % (cmd, server_id))
+                "%s is not available on server %s" % (cmd, server['id']))
 
     def _prepare_sender(self, server, address):
         check_script = get_sender_script(self.sender_output_file, address,
                                          self.completed_message)
-        self._check_cmd_installed_on_server(server['ssh_client'], server['id'],
+        self._check_cmd_installed_on_server(server['ssh_client'], server,
                                             'tcpdump')
         server['ssh_client'].execute_script(
             'echo "%s" > %s' % (check_script, self.sender_script_file))
@@ -135,7 +142,7 @@
         check_script = get_receiver_script(
             result_file=self.output_file,
             packets_expected=n_packets)
-        self._check_cmd_installed_on_server(server['ssh_client'], server['id'],
+        self._check_cmd_installed_on_server(server['ssh_client'], server,
                                             'tcpdump')
         server['ssh_client'].execute_script(
             'echo "%s" > %s' % (check_script, self.receiver_script_file))
diff --git a/neutron_tempest_plugin/scenario/test_multicast.py b/neutron_tempest_plugin/scenario/test_multicast.py
index 726d1e0..acfb75c 100644
--- a/neutron_tempest_plugin/scenario/test_multicast.py
+++ b/neutron_tempest_plugin/scenario/test_multicast.py
@@ -16,8 +16,10 @@
 import netaddr
 from neutron_lib import constants
 from oslo_log import log
+from paramiko import ssh_exception as ssh_exc
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
+from tempest.lib import exceptions as lib_exc
 
 from neutron_tempest_plugin.common import ip
 from neutron_tempest_plugin.common import ssh
@@ -210,15 +212,20 @@
                                           self.username,
                                           pkey=self.keypair['private_key'])
         self._check_cmd_installed_on_server(server['ssh_client'],
-                                            server['id'], PYTHON3_BIN)
+                                            server, PYTHON3_BIN)
         return server
 
-    def _check_cmd_installed_on_server(self, ssh_client, server_id, cmd):
+    def _check_cmd_installed_on_server(self, ssh_client, server, cmd):
         try:
             ssh_client.execute_script('which %s' % cmd)
+        except (lib_exc.SSHTimeout, ssh_exc.AuthenticationException) as ssh_e:
+            LOG.debug(ssh_e)
+            self._log_console_output([server])
+            self._log_local_network_status()
+            raise
         except exceptions.SSHScriptFailed:
             raise self.skipException(
-                "%s is not available on server %s" % (cmd, server_id))
+                "%s is not available on server %s" % (cmd, server['id']))
 
     def _prepare_sender(self, server, mcast_address):
         check_script = get_sender_script(
@@ -237,7 +244,7 @@
             server['fip']['floating_ip_address'],
             self.username,
             pkey=self.keypair['private_key'])
-        self._check_cmd_installed_on_server(ssh_client, server['id'],
+        self._check_cmd_installed_on_server(ssh_client, server,
                                             PYTHON3_BIN)
         server['ssh_client'].execute_script(
             'echo "%s" > /tmp/multicast_traffic_receiver.py' % check_script)
@@ -253,7 +260,7 @@
         check_script = get_unregistered_script(
             interface=port_iface, group=mcast_address,
             result_file=self.unregistered_output_file)
-        self._check_cmd_installed_on_server(ssh_client, server['id'],
+        self._check_cmd_installed_on_server(ssh_client, server,
                                             'tcpdump')
         server['ssh_client'].execute_script(
             'echo "%s" > /tmp/unregistered_traffic_receiver.sh' % check_script)
diff --git a/neutron_tempest_plugin/scenario/test_ports.py b/neutron_tempest_plugin/scenario/test_ports.py
index fb2d2b0..c661d39 100644
--- a/neutron_tempest_plugin/scenario/test_ports.py
+++ b/neutron_tempest_plugin/scenario/test_ports.py
@@ -107,8 +107,8 @@
                 if port is not None:
                     break
             except Exception as e:
-                LOG.warn('Failed to create Port, using Fixed_IP:{}, '
-                         'the Error was:{}'.format(ip, e))
+                LOG.warning('Failed to create Port, using Fixed_IP:{}, '
+                            'the Error was:{}'.format(ip, e))
         fip, server = self._create_instance_with_port(port)
         self.check_connectivity(fip[0]['floating_ip_address'],
                                 CONF.validation.image_ssh_user,
diff --git a/neutron_tempest_plugin/scenario/test_trunk.py b/neutron_tempest_plugin/scenario/test_trunk.py
index b86c019..b994775 100644
--- a/neutron_tempest_plugin/scenario/test_trunk.py
+++ b/neutron_tempest_plugin/scenario/test_trunk.py
@@ -114,11 +114,6 @@
                 vlan_tag=segmentation_id,
                 vlan_subnet=vlan_subnet)
 
-        for server in server_list:
-            self.check_connectivity(
-                host=vm.floating_ip['floating_ip_address'],
-                ssh_client=vm.ssh_client)
-
         return server_list
 
     def _check_servers_remote_connectivity(self, vms=None,
@@ -197,6 +192,10 @@
         self._wait_for_trunk(trunk=vm.trunk)
         self._wait_for_port(port=vm.port)
         self._wait_for_port(port=vm.subport)
+        self.check_connectivity(
+            host=vm.floating_ip['floating_ip_address'],
+            ssh_client=vm.ssh_client,
+            servers=[vm.server])
 
         ip_command = ip.IPCommand(ssh_client=vm.ssh_client)
         for address in ip_command.list_addresses(port=vm.port):