diff --git a/utils/__init__.py b/utils/__init__.py
index 8b04bab..8cfe897 100644
--- a/utils/__init__.py
+++ b/utils/__init__.py
@@ -72,3 +72,13 @@
                 global_config[param] = os.environ[param]
 
     return global_config
+
+
+def check_iperf_utility(actual_iperf_utility):
+    valid_values = ["iperf", "iperf3"]
+    if actual_iperf_utility not in valid_values:
+        raise BaseException("The iperf utility for multiple threads test case "
+                            "is not correct. Valid value is one of {}. Actual "
+                            "value is {}. Please set the correct value in "
+                            "global_config.yaml:multiple_threads_iperf_utility"
+                            "".format(valid_values, actual_iperf_utility))