diff --git a/tests/test_vm2vm_different_routers.py b/tests/test_vm2vm_different_routers.py
index 612e5be..8b38a4b 100644
--- a/tests/test_vm2vm_different_routers.py
+++ b/tests/test_vm2vm_different_routers.py
@@ -1,3 +1,4 @@
+from concurrent.futures import ThreadPoolExecutor
 import logging
 import sys
 import time
@@ -107,7 +108,8 @@
         vms[2].add_floating_ip(fip2['floating_ip_address'])
         for i in range(len(vms)):
             vm_info.append({'vm': vms[i],
-                            'fip': fips[i]['floating_ip_address']})
+                            'fip': fips[i]['floating_ip_address'],
+                            'private_key': private_key})
 
         # Set custom MTU if required
         if os_actions.is_cloud_tf() and (custom_mtu != "default"):
@@ -117,24 +119,21 @@
                                                                custom_mtu)
 
         # Check VMs are reachable and prepare iperf3
-        logger.info("Checking VMs are reachable via SSH, getting MTU...")
-        mtus = []
+        logger.info("Checking VMs are reachable via SSH...")
         transport1 = ssh.SSHTransport(vm_info[0]['fip'], 'ubuntu',
                                       password='dd', private_key=private_key)
-        logger.info("Checking VMs are reachable via SSH...")
         for i in range(len(vms)):
-            if transport1.check_vm_is_reachable_ssh(
-                    floating_ip=vm_info[i]['fip'], timeout=ssh_timeout):
-                ssh.IperfAtVM(
-                    vm_info[i]['fip'], private_key=private_key)
-                mtus.append(transport1.get_mtu_from_vm(
-                    vm_info[i]['fip'], private_key=private_key))
+            transport1.check_vm_is_reachable_ssh(
+                floating_ip=vm_info[i]['fip'], timeout=ssh_timeout)
+        with ThreadPoolExecutor() as executor:
+            futures = [
+                executor.submit(ssh.install_iperf_at_vms_and_get_mtu, vm_info)
+                for vm_info in vm_info]
+            mtus = [future.result() for future in futures]
         logger.info(
             "MTU at networks: {}, {}".format(
                 os_resources['net1']['mtu'],
                 os_resources_alt_project['net1']['mtu']))
-        logger.info("MTU at VMs: {}".format(", ".join(mtus)))
-
         # Prepare the result table and run iperf3
         table_rows = []
         table_rows.append(['Test Case', 'Host 1', 'Host 2',