diff --git a/demo-scripts/Sprint-4/demo-prep.sh b/demo-scripts/Sprint-4/demo-prep.sh
new file mode 100755
index 0000000..80c3aa4
--- /dev/null
+++ b/demo-scripts/Sprint-4/demo-prep.sh
@@ -0,0 +1,69 @@
+#! /bin/bash
+export CLUSTER=/home/masayosi/bin/hosts-3x3.txt
+function cmd {
+while [ 1 ] ; do
+   $@
+   echo "Continue? [y/n]:"
+   read -t 2 value 
+   if [ x$value == "xy" ]; then 
+     break;
+   fi
+   sleep 1
+done
+}
+
+./start-onos.sh 'onos9vpc,onos10vpc,onos11vpc,onos12vpc' stop
+./start-onos.sh 'onos9vpc,onos10vpc,onos11vpc,onos12vpc' status
+#./start-cassandra.sh 'onos9vpc' start
+#sleep 2
+#./start-cassandra.sh 'onos10vpc,onos11vpc,onos12vpc' start
+
+dsh -w onos9vpc 'cd ONOS;./clean-cassandra.sh'
+cmd ./start-cassandra.sh onos9vpc status
+sleep 5
+echo "Set mininet local"
+dsh -g onos 'ONOS/ctrl-none.sh'
+echo "Start ONOS on 9, 10 and 12"
+./start-onos.sh 'onos9vpc' start
+sleep 1
+./start-onos.sh 'onos10vpc' start
+sleep 1
+./start-onos.sh 'onos12vpc' start
+while [ 1 ] ; do
+   ./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' status
+   echo "Continue? [y/s/n]:"
+   read -t 2 value 
+   if [ x$value == "xy" ]; then 
+     break;
+   elif [ x$value == "xs" ]; then 
+     ./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' start
+   fi
+   sleep 1
+done
+sleep 2
+dsh -g onos 'ONOS/ctrl-local.sh'
+#sleep 2
+#./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' start
+while [ 1 ] ; do
+   ./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' status
+   echo "Continue? [y/s/n]:"
+   read -t 2 value 
+   if [ x$value == "xy" ]; then 
+     break;
+   elif [ x$value == "xs" ]; then 
+     ./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' start
+   fi
+   sleep 1
+done
+#cmd dsh -w onos9vpc,onos10vpc 'ONOS/ctrl-add-ext.sh'
+#while [ 1 ] ; do
+#   ./start-onos.sh 'onos9vpc,onos10vpc,onos12vpc' status
+#   echo "Continue? [y/n]:"
+#   read -t 2 value 
+#   if [ x$value == "xy" ]; then 
+#     break;
+#   fi
+#   sleep 1
+#done
+#dsh -w onos9vpc,onos10vpc 'ONOS/ctrl-add-ext.sh'
+#sleep 1