diff --git a/web/pingall.py b/web/pingall.py
index f4f10c2..0643cb9 100755
--- a/web/pingall.py
+++ b/web/pingall.py
@@ -1,11 +1,16 @@
 #! /usr/bin/env python
 import sys
+import time
 import os
 
-hosts=['onosgui1', 'onosgui2', 'onosgui3', 'onosgui4', 'onosgui5', 'onosgui6', 'onosgui7', 'onosgui8']
+hosts=['onosdevz1', 'onosdevz2', 'onosdevz3', 'onosdevz4', 'onosdevz5', 'onosdevz6', 'onosdevz7', 'onosdevz8']
 filename = sys.argv[1]
 
+ping_cnt=3
+wait=ping_cnt
+
 f = open(filename, 'r')
+nr_ping = 0
 for line in f:
   if line[0] != "#":
     fid=int(line.strip().split()[0])
@@ -15,10 +20,34 @@
     dst_nwid=int(dst_dpid.split(':')[-2], 16)
     src_hostid=int(src_dpid.split(':')[-1], 16)
     dst_hostid=int(dst_dpid.split(':')[-1], 16)
-#    cmd="ssh %s \'ssh -o StrictHostKeyChecking=no 1.1.%d.1 ping -c 10 -W 1 192.168.%d.%d\' > /tmp/ping.%d 2>&1 &" % (hosts[src_nwid-1], src_hostid, dst_nwid, dst_hostid,fid)
-#    cmd="ssh %s \'ssh -o StrictHostKeyChecking=no 1.1.%d.1 arp 193.168.%d.%d; ping -c 10 -W 1 192.168.%d.%d\' > /tmp/ping.%d 2>&1 &" % (hosts[src_nwid-1], src_hostid, dst_nwid, dst_hostid, dst_nwid, dst_hostid,fid)
-    cmd="ssh %s \'ssh -o StrictHostKeyChecking=no 1.1.%d.1 ping -c 10 -W 1 192.168.%d.%d\' > /tmp/ping.%d 2>&1 &" % (hosts[src_nwid-1], src_hostid, dst_nwid, dst_hostid,fid)
-    print cmd
+    cmd="echo \"192.168.%d.%d -> 192.168.%d.%d\" > /tmp/ping.%d" % (src_nwid, src_hostid, dst_nwid, dst_hostid,fid)
+    os.popen(cmd)
+    cmd="ssh %s \'ssh -o StrictHostKeyChecking=no 1.1.%d.1 \'ping -c %d -W 1 192.168.%d.%d\'\' >> /tmp/ping.%d 2>&1 &" % (hosts[src_nwid-1], src_hostid, ping_cnt, dst_nwid, dst_hostid,fid)
+#    print cmd
     result = os.popen(cmd).read()
+    nr_ping = nr_ping + 1
+
+print "waiting for ping(s) to finish (%d sec)" % (wait)
+time.sleep(wait)
+cmd="cat /tmp/ping.* | grep loss |wc -l"
+while 1:
+  result = int(os.popen(cmd).read())
+  if result == nr_ping:
+    break
+
+cmd='cat /tmp/ping.* | grep " 0% packet loss" |wc -l'
+result = int(os.popen(cmd).read())
+if result != nr_ping:
+  print "fail: %d ping(s) failed (out of %d)" % (nr_ping - result, nr_ping)
+else:
+  print "success: all %d ping(s) got through" % (result)
+
+for i in range(nr_ping):
+  cmd="cat /tmp/ping.%d | grep loss | awk '{print $6}'" % (i+1)
+  cmd2="cat /tmp/ping.%d | head -n 1" % (i+1)
+  result = os.popen(cmd).read().strip()
+  result2 = os.popen(cmd2).read().strip()
+  if result != "0%":
+    print "flow # %d fail (%s)" % (i+1, result2)
 
 f.close()