diff --git a/examples/ndn-congestion-topo-plugin.cc b/examples/ndn-congestion-topo-plugin.cc
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+++ b/examples/ndn-congestion-topo-plugin.cc
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+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011-2012 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-congestion-topo-plugin.cc
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/ndnSIM-module.h"
+
+using namespace ns3;
+
+/**
+ * This scenario simulates a grid topology (using topology reader module)
+ *
+ *   /------\	                                                 /------\
+ *   | Src1 |<--+                                            +-->| Dst1 |
+ *   \------/    \                                          /    \------/
+ *            	 \                                        /     
+ *                 +-->/------\   "bottleneck"  /------\<-+      
+ *                     | Rtr1 |<===============>| Rtr2 |         
+ *                 +-->\------/                 \------/<-+      
+ *                /                                        \
+ *   /------\    /                                          \    /------\
+ *   | Src2 |<--+                                            +-->| Dst2 |
+ *   \------/                                                    \------/
+ *
+ * To run scenario and see what is happening, use the following command:
+ *
+ *     NS_LOG=ndn.Consumer:ndn.Producer ./waf --run=ndn-congestion-topo-plugin
+ */
+
+int
+main (int argc, char *argv[])
+{
+  CommandLine cmd;
+  cmd.Parse (argc, argv);
+
+  AnnotatedTopologyReader topologyReader ("", 25);
+  topologyReader.SetFileName ("src/ndnSIM/examples/topology/topo-grid-3x3.txt");
+  topologyReader.Read ();
+
+  // Install CCNx stack on all nodes
+  ndn::StackHelper ccnxHelper;
+  ccnxHelper.InstallAll ();
+
+  // Installing global routing interface on all nodes
+  ndn::GlobalRoutingHelper ccnxGlobalRoutingHelper;
+  ccnxGlobalRoutingHelper.InstallAll ();
+
+  // Getting containers for the consumer/producer
+  Ptr<Node> consumer1 = Names::Find<Node> ("Src1");
+  Ptr<Node> consumer2 = Names::Find<Node> ("Src2");
+
+  Ptr<Node> producer1 = Names::Find<Node> ("Dst1");
+  Ptr<Node> producer2 = Names::Find<Node> ("Dst2");
+
+  ndn::AppHelper consumerHelper ("ns3::ndn::ConsumerCbr");
+  consumerHelper.SetAttribute ("Frequency", StringValue ("100")); // 100 interests a second
+
+  // on the first consumer node install a Consumer application
+  // that will express interests in /dst1 namespace
+  consumerHelper.SetPrefix ("/dst1");
+  consumerHelper.Install (consumer1);
+
+  // on the second consumer node install a Consumer application
+  // that will express interests in /dst2 namespace
+  consumerHelper.SetPrefix ("/dst2");
+  consumerHelper.Install (consumer2);
+  
+  ndn::AppHelper producerHelper ("ns3::ndn::Producer");
+  producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));  
+
+  // Register /dst1 prefix with global routing controller and
+  // install producer that will satisfy Interests in /dst1 namespace
+  ccnxGlobalRoutingHelper.AddOrigins ("/dst1", producer1);
+  producerHelper.SetPrefix ("/dst1");
+  producerHelper.Install (producer1);
+
+  // Register /dst2 prefix with global routing controller and
+  // install producer that will satisfy Interests in /dst2 namespace
+  ccnxGlobalRoutingHelper.AddOrigins ("/dst2", producer2);
+  producerHelper.SetPrefix ("/dst2");
+  producerHelper.Install (producer2);
+
+  // Calculate and install FIBs
+  ccnxGlobalRoutingHelper.CalculateRoutes ();
+
+  Simulator::Stop (Seconds (20.0));
+
+  Simulator::Run ();
+  Simulator::Destroy ();
+
+  return 0;
+}