diff --git a/core/topo.py b/core/topo.py
index 7d381b6..6569be8 100644
--- a/core/topo.py
+++ b/core/topo.py
@@ -515,13 +515,13 @@ class TopoConfig(object):
 
     def disable_tso(self):
         """
-        Disable TSO on all interfaces
+        Disable TSO, GSO and GRO on all interfaces
         """
-        logging.info("Disable TSO on all interfaces of all nodes")
+        logging.info("Disable TSO, GSO and GRO on all interfaces of all nodes")
         for node in [self.topo.get_host(n) for n in self.topo.topo_builder.net]:
             for intf in self.topo.get_interface_names(node):
-                logging.debug("Disable TSO on interface {}".format(intf))
-                cmd = "ethtool -K {} tso off".format(intf)
+                logging.debug("Disable TSO, GSO and GRO on interface {}".format(intf))
+                cmd = "ethtool -K {} tso off; ethtool -K {} gso off; ethtool -K {} gro off".format(intf, intf, intf)
                 logging.debug(cmd)
                 self.topo.command_to(node, cmd)
 
diff --git a/experiments/iperf.py b/experiments/iperf.py
index 559f38c..fadb062 100644
--- a/experiments/iperf.py
+++ b/experiments/iperf.py
@@ -20,7 +20,7 @@ class IPerf(Experiment):
 
     IPERF_LOG = "iperf.log"
     SERVER_LOG = "server.log"
-    IPERF_BIN = "iperf3"
+    IPERF_BIN = "iperf"
     PING_OUTPUT = "ping.log"
 
     def __init__(self, experiment_parameter_filename, topo, topo_config):
@@ -38,7 +38,7 @@ class IPerf(Experiment):
         self.topo.command_to(self.topo_config.server, "rm {}".format(IPerf.SERVER_LOG))
 
     def get_client_cmd(self):
-        s = "{} -c {} -t {} -P {} &>{}".format(IPerf.IPERF_BIN, 
+        s = "{} -c {} -t {} -P {} -i 1 &>{}".format(IPerf.IPERF_BIN, 
             self.topo_config.get_server_ip(), self.time, self.parallel, IPerf.IPERF_LOG)
         logging.info(s)
         return s
diff --git a/experiments/iperf_scenario.py b/experiments/iperf_scenario.py
index c0bde20..30a6622 100644
--- a/experiments/iperf_scenario.py
+++ b/experiments/iperf_scenario.py
@@ -20,7 +20,7 @@ class IPerfScenario(Experiment):
 
     IPERF_LOG = "iperf.log"
     SERVER_LOG = "server.log"
-    IPERF_BIN = "iperf3"
+    IPERF_BIN = "iperf"
     PING_OUTPUT = "ping.log"
 
     def __init__(self, experiment_parameter_filename, topo, topo_config):
@@ -41,7 +41,7 @@ class IPerfScenario(Experiment):
             raise Exception("IPerfScenario only runs with MultiInterfaceMultiClientTopo")
 
     def get_client_iperf_cmd(self, server_ip, time, client_id):
-        s = "{} -c {} -t {} -P 1 &>{}{}".format(IPerfScenario.IPERF_BIN, server_ip, time, IPerfScenario.IPERF_LOG, client_id)
+        s = "{} -c {} -t {} -P 1 -i 5 &>{}{}".format(IPerfScenario.IPERF_BIN, server_ip, time, IPerfScenario.IPERF_LOG, client_id)
         logging.info(s)
         return s