diff --git a/scripts/test-iperf-concurrent b/scripts/test-iperf-concurrent
new file mode 100755
index 0000000..b93a284
--- /dev/null
+++ b/scripts/test-iperf-concurrent
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+source scan-netdev
+VLANS='110 218 222 226 306 321 480'
+CTLPLANE=110
+MY_DATE=`date +%Y-%m-%d_%H-%M-%S`
+mkdir -p $OUTPUT_DIR/iperf
+
+MY_PORT=`grep $SERVER_SERIAL /etc/netdev/vlan.$CTLPLANE.csv \
+	| cut -d ',' -f 3 | cut -d '.' -f 4`
+if [[ -z $MY_PORT ]] ; then
+	echo "My Port empty"
+	exit 27
+fi
+
+for VLAN in $VLANS ; do
+	if [[ -f /etc/netdev/vlan.$VLAN.csv ]] ; then
+		VLAN_CONF=`grep $SERVER_SERIAL \
+			/etc/netdev/vlan.$VLAN.csv` 
+	fi
+	if [[ -z $VLAN_CONF ]] ; then
+		continue
+	fi
+	IP_LIST=`sed 's/#.*$//'  /etc/netdev/vlan.$VLAN.csv \
+		| cut -d ',' -f 3 \
+		| grep '^[0-9]' | sort`
+	for IP in $IP_LIST; do 
+		echo -n "$IP - "  
+		iperf3  -P 4 -p 52$MY_PORT \
+			--logfile $OUTPUT_DIR/iperf/client.$IP.concurrent.log \
+			-c $IP &
+		#echo $?
+	done
+	sleep 55
+done
+
diff --git a/scripts/test-ping b/scripts/test-ping
index f240398..918fbe0 100755
--- a/scripts/test-ping
+++ b/scripts/test-ping
@@ -4,9 +4,17 @@ source scan-netdev
 VLANS='110 218 222 226 306 321 480'
 MY_DATE=`date +%Y-%m-%d_%H-%M-%S`
 
+if [[ -n $1 ]] ; then
+	MTU=`echo $1 | sed 's/[^0-9]//g'`
+	if [[ "$MTU" != "" ]] ; then
+		MTU_P=" -s $MTU"
+		LABEL=".$MTU"
+	fi
+fi
+
 stat-bonding out > $OUTPUT_DIR/bonding.out
-echo -n "START: " > $OUTPUT_DIR/ping.out
-date >> $OUTPUT_DIR/ping.out
+echo -n "START: " > $OUTPUT_DIR/ping$LABEL.out
+date >> $OUTPUT_DIR/ping$LABEL.out
 for VLAN in $VLANS ; do
         if [[ -f /etc/netdev/vlan.$VLAN.csv ]] ; then
                 VLAN_CONF=`sed 's/#.*$//' /etc/netdev/vlan.$VLAN.csv \
@@ -20,13 +28,13 @@ for VLAN in $VLANS ; do
                 | grep '^[0-9]' | sort`
         for IP in $IP_LIST; do 
                 echo -n "$IP - "  \
-                | tee -a $OUTPUT_DIR/ping.out 
-                ping -c100 -W1 -f $IP \
+                | tee -a $OUTPUT_DIR/ping$LABEL.out 
+                ping -c100 -W1 $MTU_P -f $IP \
                 | grep 'received' \
-                | tee -a $OUTPUT_DIR/ping.out 
+                | tee -a $OUTPUT_DIR/ping$LABEL.out 
         done
 done
-echo -n "END: " >> $OUTPUT_DIR/ping.out
-date >> $OUTPUT_DIR/ping.out
-cp -vf $OUTPUT_DIR/ping.out $OUTPUT_DIR/ping-$MY_DATE.out
+echo -n "END: " >> $OUTPUT_DIR/ping$LABEL.out
+date >> $OUTPUT_DIR/ping$LABEL.out
+cp -vf $OUTPUT_DIR/ping$LABEL.out $OUTPUT_DIR/ping-$MY_DATE$LABEL.out
 cp -vf $OUTPUT_DIR/bonding.out $OUTPUT_DIR/bonding-$MY_DATE.out