diff --git a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
index 66d75bbb..d90c80bd 100755
--- a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
+++ b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
@@ -20,8 +20,10 @@ print('ENB is connected to EPC')
 
 ue.connect(enb)
 
+max_rate = enb.ue_max_rate(downlink=True)
+
 iperf3srv.start()
-proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns())
+proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
 wait(ue.is_connected, None)
@@ -34,7 +36,6 @@ iperf3srv.stop()
 iperf3cli.print_results()
 iperf3srv.print_results(iperf3cli.proto() == iperf3cli.PROTO_UDP)
 
-max_rate = enb.ue_max_rate(downlink=True)
 res_str = ue.verify_metric(max_rate * 0.8, operation='avg', metric='dl_brate', criterion='gt')
 print(res_str)
 test.set_report_stdout(res_str)
diff --git a/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py b/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
index 7dca1271..453cdfa1 100755
--- a/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
+++ b/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
@@ -20,8 +20,10 @@ print('ENB is connected to EPC')
 
 ue.connect(enb)
 
+max_rate = enb.ue_max_rate(downlink=False)
+
 iperf3srv.start()
-proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns())
+proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
 wait(ue.is_connected, None)
@@ -34,7 +36,6 @@ iperf3srv.stop()
 iperf3cli.print_results()
 iperf3srv.print_results(iperf3cli.proto() == iperf3cli.PROTO_UDP)
 
-max_rate = enb.ue_max_rate(downlink=False)
 res_str = ue.verify_metric(max_rate * 0.8, operation='avg', metric='ul_brate', criterion='gt')
 print(res_str)
 test.set_report_stdout(res_str)
diff --git a/src/osmo_gsm_tester/obj/iperf3.py b/src/osmo_gsm_tester/obj/iperf3.py
index 04aac475..70fceff1 100644
--- a/src/osmo_gsm_tester/obj/iperf3.py
+++ b/src/osmo_gsm_tester/obj/iperf3.py
@@ -219,7 +219,7 @@ class IPerf3Client(log.Origin):
         locally = not self._run_node or self._run_node.is_local()
         return locally
 
-    def prepare_test_proc(self, dir=None, netns=None, time_sec=None, proto=None):
+    def prepare_test_proc(self, dir=None, netns=None, time_sec=None, proto=None, bitrate=0):
         values = config.get_defaults('iperf3cli')
         config.overlay(values, self.testenv.suite().config().get('iperf3cli', {}))
 
@@ -247,11 +247,11 @@ class IPerf3Client(log.Origin):
         self.run_dir = util.Dir(self.testenv.test().get_run_dir().new_dir(self.name()))
         self.log_file = self.run_dir.new_file(IPerf3Client.LOGFILE)
         if self.runs_locally():
-            return self.prepare_test_proc_locally(dir, netns, time_sec, proto == IPerf3Client.PROTO_UDP)
+            return self.prepare_test_proc_locally(dir, netns, time_sec, proto == IPerf3Client.PROTO_UDP, bitrate)
         else:
-            return self.prepare_test_proc_remotely(dir, netns, time_sec, proto == IPerf3Client.PROTO_UDP)
+            return self.prepare_test_proc_remotely(dir, netns, time_sec, proto == IPerf3Client.PROTO_UDP, bitrate)
 
-    def prepare_test_proc_remotely(self, dir, netns, time_sec, use_udp):
+    def prepare_test_proc_remotely(self, dir, netns, time_sec, use_udp, bitrate):
         self.rem_host = remote.RemoteHost(self.run_dir, self._run_node.ssh_user(), self._run_node.ssh_addr())
 
         remote_prefix_dir = util.Dir(IPerf3Client.REMOTE_DIR)
@@ -270,7 +270,7 @@ class IPerf3Client(log.Origin):
         elif dir == IPerf3Client.DIR_BI:
             popen_args += ('--bidir',)
         if use_udp:
-            popen_args += ('-u', '-b', '0')
+            popen_args += ('-u', '-b', str(bitrate))
 
         if netns:
             self.process = self.rem_host.RemoteNetNSProcess(self.name(), netns, popen_args, env={})
diff --git a/sysmocom/suites/4g/iperf3_dl.py b/sysmocom/suites/4g/iperf3_dl.py
index 66d75bbb..d90c80bd 100755
--- a/sysmocom/suites/4g/iperf3_dl.py
+++ b/sysmocom/suites/4g/iperf3_dl.py
@@ -20,8 +20,10 @@ print('ENB is connected to EPC')
 
 ue.connect(enb)
 
+max_rate = enb.ue_max_rate(downlink=True)
+
 iperf3srv.start()
-proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns())
+proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
 wait(ue.is_connected, None)
@@ -34,7 +36,6 @@ iperf3srv.stop()
 iperf3cli.print_results()
 iperf3srv.print_results(iperf3cli.proto() == iperf3cli.PROTO_UDP)
 
-max_rate = enb.ue_max_rate(downlink=True)
 res_str = ue.verify_metric(max_rate * 0.8, operation='avg', metric='dl_brate', criterion='gt')
 print(res_str)
 test.set_report_stdout(res_str)
diff --git a/sysmocom/suites/4g/iperf3_ul.py b/sysmocom/suites/4g/iperf3_ul.py
index 7dca1271..453cdfa1 100755
--- a/sysmocom/suites/4g/iperf3_ul.py
+++ b/sysmocom/suites/4g/iperf3_ul.py
@@ -20,8 +20,10 @@ print('ENB is connected to EPC')
 
 ue.connect(enb)
 
+max_rate = enb.ue_max_rate(downlink=False)
+
 iperf3srv.start()
-proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns())
+proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
 wait(ue.is_connected, None)
@@ -34,7 +36,6 @@ iperf3srv.stop()
 iperf3cli.print_results()
 iperf3srv.print_results(iperf3cli.proto() == iperf3cli.PROTO_UDP)
 
-max_rate = enb.ue_max_rate(downlink=False)
 res_str = ue.verify_metric(max_rate * 0.8, operation='avg', metric='ul_brate', criterion='gt')
 print(res_str)
 test.set_report_stdout(res_str)