diff --git a/scripts/all-linkup.sh b/scripts/all-linkup.sh
new file mode 100755
index 0000000..9067012
--- /dev/null
+++ b/scripts/all-linkup.sh
@@ -0,0 +1,16 @@
+#! /bin/bash
+
+controller=`hostname`
+switches=`sudo ovs-vsctl list-br`
+
+function host2ip (){
+   ip=`grep $1 /etc/hosts |grep -v "ip6"|  awk '{print $1}'`
+   echo $ip
+}
+
+for s in $switches; do
+  ports=`sudo ovs-vsctl --pretty list-ports $s`
+  for p in $ports; do
+    sudo ifconfig $p up 
+  done
+done