diff --git a/examples/congestion-tcp-pop.cc b/examples/congestion-tcp-pop.cc
new file mode 100644
index 0000000..2b30ae8
--- /dev/null
+++ b/examples/congestion-tcp-pop.cc
@@ -0,0 +1,325 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 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: Ilya Moiseenko <iliamo@cs.ucla.edu>
+ */
+
+
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/point-to-point-module.h"
+#include "ns3/NDNabstraction-module.h"
+#include "ns3/point-to-point-grid.h"
+#include "ns3/ipv4-global-routing-helper.h"
+#include "ns3/random-variable.h"
+#include "ns3/internet-module.h"
+#include "ns3/applications-module.h"
+
+#include <iostream>
+#include <sstream>
+#include <map>
+#include <list>
+#include <set>
+#include "ns3/rocketfuel-topology-reader.h"
+
+#include <boost/lexical_cast.hpp>
+#include <boost/foreach.hpp>
+
+using namespace ns3;
+using namespace std;
+using namespace boost;
+
+NS_LOG_COMPONENT_DEFINE ("Scenario");
+
+void PrintTime ()
+{
+  cout << "Progress: " << Simulator::Now ().ToDouble (Time::S) << "s" << endl;
+
+  Simulator::Schedule (Seconds (1.0), PrintTime);
+}
+
+class Experiment
+{
+public:
+  void
+  ConfigureCcnxTopology ()
+  {
+    Names::Clear ();
+    
+    string weights   ("./src/NDNabstraction/examples/sprint-pops.weights");
+    string latencies ("./src/NDNabstraction/examples/sprint-pops.latencies");
+    string positions ("./src/NDNabstraction/examples/sprint-pops.positions");
+    string strategy  ("ns3::CcnxBestRouteStrategy");
+    // string strategy ("ns3::CcnxFloodingStrategy");
+  
+    RocketfuelWeightsReader reader ("/sprint");
+
+    reader.SetFileName (positions);
+    reader.SetFileType (RocketfuelWeightsReader::POSITIONS);
+    reader.Read ();
+  
+    reader.SetFileName (weights);
+    reader.SetFileType (RocketfuelWeightsReader::WEIGHTS);    
+    reader.Read ();
+
+    reader.SetFileName (latencies);
+    reader.SetFileType (RocketfuelWeightsReader::LATENCIES);    
+    reader.Read ();
+    
+    reader.Commit ();
+    NS_ASSERT_MSG (reader.LinksSize () != 0, "Problems reading the topology file. Failing.");
+    
+    NS_LOG_INFO("Nodes = " << reader.GetNodes ().GetN());
+    NS_LOG_INFO("Links = " << reader.LinksSize ());
+  
+    // ------------------------------------------------------------
+    // -- Read topology data.
+    // --------------------------------------------
+        
+    InternetStackHelper stack;
+    Ipv4GlobalRoutingHelper ipv4RoutingHelper ("ns3::Ipv4GlobalRoutingOrderedNexthops");
+    stack.SetRoutingHelper (ipv4RoutingHelper);
+    stack.Install (reader.GetNodes ());
+
+    reader.AssignIpv4Addresses (Ipv4Address ("10.0.0.0"));
+
+    // Install CCNx stack
+    NS_LOG_INFO ("Installing CCNx stack");
+    CcnxStackHelper ccnxHelper;
+    ccnxHelper.SetForwardingStrategy (strategy);
+    ccnxHelper.EnableLimits (true, Seconds(0.1));
+    ccnxHelper.SetDefaultRoutes (false);
+    ccnxHelper.InstallAll ();
+
+    // // Populate FIB based on IPv4 global routing controller
+    ccnxHelper.InstallFakeGlobalRoutes ();
+    ccnxHelper.InstallRoutesToAll ();
+
+    m_rand = UniformVariable (0, reader.GetNodes ().GetN());
+  }
+
+  void
+  ConfigureIpv4Topology ()
+  {
+    Names::Clear ();
+    
+    string weights   ("./src/NDNabstraction/examples/sprint-pops.weights");
+    string latencies ("./src/NDNabstraction/examples/sprint-pops.latencies");
+    string positions ("./src/NDNabstraction/examples/sprint-pops.positions");
+    string strategy  ("ns3::CcnxBestRouteStrategy");
+    // string strategy ("ns3::CcnxFloodingStrategy");
+  
+    RocketfuelWeightsReader reader ("/sprint");
+
+    reader.SetFileName (positions);
+    reader.SetFileType (RocketfuelWeightsReader::POSITIONS);
+    reader.Read ();
+  
+    reader.SetFileName (weights);
+    reader.SetFileType (RocketfuelWeightsReader::WEIGHTS);    
+    reader.Read ();
+
+    reader.SetFileName (latencies);
+    reader.SetFileType (RocketfuelWeightsReader::LATENCIES);    
+    reader.Read ();
+    
+    reader.Commit ();
+    NS_ASSERT_MSG (reader.LinksSize () != 0, "Problems reading the topology file. Failing.");
+    
+    NS_LOG_INFO("Nodes = " << reader.GetNodes ().GetN());
+    NS_LOG_INFO("Links = " << reader.LinksSize ());
+  
+    // ------------------------------------------------------------
+    // -- Read topology data.
+    // --------------------------------------------
+        
+    InternetStackHelper stack;
+    Ipv4GlobalRoutingHelper ipv4RoutingHelper;
+    stack.SetRoutingHelper (ipv4RoutingHelper);
+    stack.Install (reader.GetNodes ());
+
+    reader.AssignIpv4Addresses (Ipv4Address ("10.0.0.0"));
+
+    // Install CCNx stack
+    NS_LOG_INFO ("Installing CCNx stack");
+    CcnxStackHelper ccnxHelper;
+    ccnxHelper.InstallFakeGlobalRoutesImpl ();
+    Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
+
+    m_rand = UniformVariable (0, reader.GetNodes ().GetN());
+  }
+  
+  
+  ApplicationContainer
+  AddCcnxRandomApplications (uint16_t numStreams)
+  {
+    map<uint32_t, set<uint32_t> > streams;
+    ApplicationContainer apps;
+    
+    uint16_t createdStreams = 0;
+    uint16_t guard = 0;
+    while (createdStreams < numStreams && guard < (numeric_limits<uint16_t>::max ()-1))
+      {
+        guard ++;
+        
+        uint32_t node1_num = m_rand.GetValue ();
+        uint32_t node2_num = m_rand.GetValue ();
+
+        if (node1_num == node2_num)
+          continue;
+
+        if (streams[node1_num].count (node2_num) > 0) // don't create duplicate streams
+          continue;
+        
+        streams[node1_num].insert (node2_num);
+
+        Ptr<Node> node1 = Names::Find<Node> ("/sprint", lexical_cast<string> (node1_num));
+        Ptr<Node> node2 = Names::Find<Node> ("/sprint", lexical_cast<string> (node2_num));
+
+        CcnxAppHelper consumerHelper ("ns3::CcnxConsumer");
+        consumerHelper.SetPrefix ("/" + lexical_cast<string> (node2->GetId ()));
+        consumerHelper.SetAttribute ("MeanRate", StringValue ("2Mbps"));
+        consumerHelper.SetAttribute ("Size", StringValue ("1.983642578125")); //to make sure max seq # is 2000
+
+        CcnxAppHelper producerHelper ("ns3::CcnxProducer");
+        producerHelper.SetPrefix ("/" + lexical_cast<string> (node2->GetId ()));
+        
+        apps.Add
+          (consumerHelper.Install (node1));
+
+        apps.Add
+          (producerHelper.Install (node2));
+
+        createdStreams ++;
+      }
+
+    return apps;
+  }
+
+  ApplicationContainer
+  AddTcpRandomApplications (uint16_t numStreams)
+  {
+    map<uint32_t, set<uint32_t> > streams;
+    ApplicationContainer apps;
+
+    const static uint32_t base_port = 1000;
+    uint16_t createdStreams = 0;
+    uint16_t guard = 0;
+    while (createdStreams < numStreams && guard < (numeric_limits<uint16_t>::max ()-1))
+      {
+        guard ++;
+        
+        uint32_t node1_num = m_rand.GetValue ();
+        uint32_t node2_num = m_rand.GetValue ();
+
+        if (node1_num == node2_num)
+          continue;
+
+        if (streams[node1_num].count (node2_num) > 0) // don't create duplicate streams
+          continue;
+        
+        streams[node1_num].insert (node2_num);
+
+        Ptr<Node> node1 = Names::Find<Node> ("/sprint", lexical_cast<string> (node1_num));
+        Ptr<Node> node2 = Names::Find<Node> ("/sprint", lexical_cast<string> (node2_num));
+
+        // to make sure we don't reuse the same port numbers for different flows, just make all port numbers unique
+        PacketSinkHelper consumerHelper ("ns3::TcpSocketFactory",
+                                         InetSocketAddress (Ipv4Address::GetAny (), base_port + createdStreams));
+
+        BulkSendHelper producerHelper ("ns3::TcpSocketFactory",
+                                       InetSocketAddress (Ipv4Address(node1->GetId ()), base_port + createdStreams));
+        producerHelper.SetAttribute ("MaxBytes", UintegerValue (2080000)); // equal to 2000 ccnx packets
+        
+        apps.Add
+          (consumerHelper.Install (node1));
+
+        apps.Add
+          (producerHelper.Install (node2));
+
+        createdStreams ++;
+      }
+
+    return apps;
+  }
+
+  void
+  Run (const Time &finishTime)
+  {
+    cout << "Run Simulation.\n";
+    Simulator::Stop (finishTime);
+    // Simulator::Schedule (Seconds (1.0), PrintTime);
+    Simulator::Run ();
+    Simulator::Destroy ();
+    cout << "Done.\n";
+  }
+
+  UniformVariable m_rand;
+};
+
+
+int 
+main (int argc, char *argv[])
+{
+  cout << "Begin congestion-pop scenario\n";
+  
+  Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("1Mbps"));
+  Config::SetDefault ("ns3::DropTailQueue::MaxPackets", StringValue ("20"));
+
+  uint32_t maxRuns = 1;
+  uint32_t startRun = 0;
+  CommandLine cmd;
+  cmd.AddValue ("start", "Initial run number", startRun);
+  cmd.AddValue ("runs", "Number of runs", maxRuns);
+  cmd.Parse (argc, argv);
+
+  for (uint32_t run = startRun; run < startRun + maxRuns; run++)
+    {
+      Config::SetGlobal ("RngRun", IntegerValue (run));
+      
+      Experiment experiment;
+      cout << "Run " << run << endl;
+      
+      experiment.ConfigureTopology ();
+      // ApplicationContainer apps = experiment.AddCcnxRandomApplications (20);
+      ApplicationContainer apps = experiment.AddTcpRandomApplications (20);
+
+      for (uint32_t i = 0; i < apps.GetN () / 2; i++) 
+        {
+          cout << "From " << apps.Get (i*2)->GetNode ()->GetId ()
+               << " to "  << apps.Get (i*2 + 1)->GetNode ()->GetId ();
+          cout << "\n";
+        }
+  
+      // CcnxTraceHelper traceHelper;
+      // traceHelper.EnableAggregateAppAll ("ns3::CcnxConsumer");
+      // traceHelper.EnableAggregateAppAll ("ns3::CcnxProducer");
+      // traceHelper.SetAppTraceFile (prefix + "trace-app.log");
+
+      // string prefix = "run-" + lexical_cast<string> (run) + "-";
+      
+      // traceHelper.EnableAggregateL3All ();
+      // traceHelper.SetL3TraceFile ("trace-l3.log");
+      // traceHelper.EnableRateL3All (prefix + "rate-trace.log");
+      // traceHelper.EnableSeqsAppAll ("ns3::CcnxConsumer", prefix + "consumers-seqs.log");
+
+      experiment.Run (Seconds (200.0));
+    }
+
+  // cout << "Finish congestion-pop scenario\n";
+  return 0;
+}