diff --git a/cluster-mgmt/template/onsdemo_edge_template.py b/cluster-mgmt/template/onsdemo_edge_template.py
index cb883f8..c1843a1 100755
--- a/cluster-mgmt/template/onsdemo_edge_template.py
+++ b/cluster-mgmt/template/onsdemo_edge_template.py
@@ -92,7 +92,7 @@
         startsshd( h )
 
 def startiperf( host ):
-    host.cmd( '/usr/bin/iperf', '-sD' )
+    host.cmd( '/usr/bin/iperf', '-s &' )
 
 def startiperfs ( hosts ):
     for h in hosts: