diff --git a/ci-scripts/xml_files/container_sa_aerial_quectel.xml b/ci-scripts/xml_files/container_sa_aerial_quectel.xml
index b5a2e11e50..7282513bb8 100644
--- a/ci-scripts/xml_files/container_sa_aerial_quectel.xml
+++ b/ci-scripts/xml_files/container_sa_aerial_quectel.xml
@@ -80,7 +80,7 @@
   <testCase>
     <class>Iperf</class>
     <desc>iperf (DL/UDP/800M)(30 sec)(single-ue profile)</desc>
-    <iperf_args>-u -b 800M -t 30 -R</iperf_args>
+    <iperf_args>-u -b 800M -t 30 -R -l 1428</iperf_args>
     <svr_id>oc-cn5g-20897-aerial</svr_id>
     <id>up2-aerial</id>
     <iperf_packetloss_threshold>25</iperf_packetloss_threshold>
@@ -101,7 +101,7 @@
     <class>Iperf</class>
     <desc>Optional iperf (DL/UDP/1000M)(30 sec)(single-ue profile)</desc>
     <may_fail>true</may_fail>
-    <iperf_args>-u -b 1000M -t 30 -R</iperf_args>
+    <iperf_args>-u -b 1000M -t 30 -R -l 1428</iperf_args>
     <svr_id>oc-cn5g-20897-aerial</svr_id>
     <id>up2-aerial</id>
     <iperf_packetloss_threshold>25</iperf_packetloss_threshold>
diff --git a/ci-scripts/xml_files/container_sa_aerial_quectel_ul_heavy.xml b/ci-scripts/xml_files/container_sa_aerial_quectel_ul_heavy.xml
index c577236887..8367316e3a 100644
--- a/ci-scripts/xml_files/container_sa_aerial_quectel_ul_heavy.xml
+++ b/ci-scripts/xml_files/container_sa_aerial_quectel_ul_heavy.xml
@@ -101,7 +101,7 @@
   <testCase>
     <class>Iperf</class>
     <desc>iperf (DL/UDP/200M)(30 sec)(single-ue profile)</desc>
-    <iperf_args>-u -b 200M -t 30 -R</iperf_args>
+    <iperf_args>-u -b 200M -t 30 -R -l 1428</iperf_args>
     <svr_id>oc-cn5g-20897-aerial</svr_id>
     <id>up2-aerial</id>
     <iperf_packetloss_threshold>25</iperf_packetloss_threshold>