diff --git a/examples/ndn-simple-with-content-freshness.cc b/examples/ndn-simple-with-content-freshness.cc
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+++ b/examples/ndn-simple-with-content-freshness.cc
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+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2012 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+// ndn-simple.cc
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/point-to-point-module.h"
+#include "ns3/ndnSIM-module.h"
+
+using namespace ns3;
+
+/**
+ * This scenario simulates a very simple network topology:
+ *
+ *
+ *      +----------+     1Mbps      +--------+     1Mbps      +----------+
+ *      | consumer | <------------> | router | <------------> | producer |
+ *      +----------+         10ms   +--------+          10ms  +----------+
+ *
+ * This scenario demonstrates how to use content store that responds to Freshness parameter set in ContentObjects.
+ * That is, if producer set Freshness field to 2 seconds, the corresponding content object will not be cached
+ * more than 2 seconds (can be cached for a shorter time, if entry is evicted earlier)
+ * 
+ *     NS_LOG=DumbRequester ./waf --run ndn-simple-with-content-freshness
+ */
+
+int 
+main (int argc, char *argv[])
+{
+  // setting default parameters for PointToPoint links and channels
+  Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("1Mbps"));
+  Config::SetDefault ("ns3::PointToPointChannel::Delay", StringValue ("10ms"));
+  Config::SetDefault ("ns3::DropTailQueue::MaxPackets", StringValue ("20"));
+
+  // Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
+  CommandLine cmd;
+  cmd.Parse (argc, argv);
+
+  // Creating nodes
+  NodeContainer nodes;
+  nodes.Create (3);
+
+  // Connecting nodes using two links
+  PointToPointHelper p2p;
+  p2p.Install (nodes.Get (0), nodes.Get (1));
+  p2p.Install (nodes.Get (1), nodes.Get (2));
+
+  // Install CCNx stack on all nodes
+  ndn::StackHelper ccnxHelper;
+  ccnxHelper.SetDefaultRoutes (true);
+  ccnxHelper.SetContentStore ("ns3::ndn::cs::Freshness::Lru",
+                              "MaxSize", "2"); // allow just 2 entries to be cached
+  ccnxHelper.InstallAll ();
+
+  // Installing applications
+
+  // Consumer
+  ndn::AppHelper consumerHelper ("DumbRequester");
+
+  // /*
+  //   1) at time 1 second requests Data from a producer that does not specify freshness
+  //   2) at time 10 seconds requests the same Data packet as client 1
+
+  //   3) at time 2 seconds requests Data from a producer that specifies freshness set to 2 seconds
+  //   4) at time 12 seconds requests the same Data packet as client 3
+
+  //   Expectation:
+  //   Interests from 1, 3 and 4 will reach producers
+  //   Interset from 2 will be served from cache
+  //  */
+
+  ApplicationContainer apps;
+  
+  consumerHelper.SetPrefix ("/no-freshness");
+  apps = consumerHelper.Install (nodes.Get (0));
+  apps.Start (Seconds (0.1));
+  apps.Stop  (Seconds (10.0));
+
+  consumerHelper.SetPrefix ("/with-freshness");
+  apps = consumerHelper.Install (nodes.Get (0));
+  apps.Start (Seconds (20.1));
+  apps.Stop  (Seconds (30.0));
+  
+  // Producer
+  ndn::AppHelper producerHelper ("ns3::ndn::Producer");
+  producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));
+
+  producerHelper.SetAttribute ("Freshness", TimeValue (Seconds (0))); // unlimited freshness
+  producerHelper.SetPrefix ("/no-freshness");
+  producerHelper.Install (nodes.Get (2)); // last node
+
+  producerHelper.SetAttribute ("Freshness", TimeValue (Seconds (2.0))); // freshness 2 seconds (!!! freshness granularity is 1 seconds !!!)
+  producerHelper.SetPrefix ("/with-freshness");
+  producerHelper.Install (nodes.Get (2)); // last node
+                               
+  Simulator::Stop (Seconds (30.0));
+
+  Simulator::Run ();
+  Simulator::Destroy ();
+
+  return 0;
+}