--- a/src/bridge/examples/csma-bridge.cc	Thu Aug 23 10:52:15 2012 -0700
+++ b/src/bridge/examples/csma-bridge.cc	Thu Aug 23 16:00:17 2012 -0700
@@ -112,8 +112,7 @@
 
   OnOffHelper onoff ("ns3::UdpSocketFactory", 
                      Address (InetSocketAddress (Ipv4Address ("10.1.1.2"), port)));
-  onoff.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
-  onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
+  onoff.SetConstantRate (DataRate ("500kb/s"));
 
   ApplicationContainer app = onoff.Install (terminals.Get (0));
   // Start the application