diff --git a/utils/ssh.py b/utils/ssh.py
index fb684bb..abbd89f 100644
--- a/utils/ssh.py
+++ b/utils/ssh.py
@@ -197,10 +197,10 @@
 
         # Install iperf, iperf3 using apt or downloaded deb packages
         internet_at_vms = utils.get_configuration().get("internet_at_vms")
+        path_to_iperf_deb = (config.get('iperf_deb_package_dir_path') or
+                             "/opt/packages/")
         if internet_at_vms.lower() == 'false':
-            logger.info("Copying offline iperf* deb packages, installing...")
-            path_to_iperf_deb = (config.get('iperf_deb_package_dir_path') or
-                                 "/opt/packages/")
+            logger.info("Copying offline iperf3 deb packages, installing...")
             home_ubuntu = "/home/ubuntu/"
             transport.put_iperf3_deb_packages_at_vms(path_to_iperf_deb,
                                                      home_ubuntu)
@@ -213,9 +213,16 @@
                                    'sudo apt-get install -y iperf3 iperf')
 
         # Log whether iperf is installed with version
-        check = transport.exec_command('dpkg -l | grep iperf')
+        check = transport.exec_command('dpkg -l | grep ii | grep iperf3')
         logger.info(check.decode('utf-8'))
-
+        if not check:
+            if internet_at_vms.lower() == 'true':
+                info = "Please check the Internet access at VM."
+            else:
+                info = "Could not put offline iperf packages from {} to the " \
+                       "VM.".format(path_to_iperf_deb)
+            raise BaseException("iperf3 is not installed at VM with FIP {}. {}"
+                                "".format(fip, info))
         # Staring iperf server
         transport.exec_command('nohup iperf3 -s > file 2>&1 &')
         transport.exec_command('nohup iperf -s > file 2>&1 &')