diff --git a/examples/topology-read/Inet_small_toposample.txt b/examples/topology-read/Inet_small_toposample.txt
new file mode 100644
index 000000000..77aa8b4cd
--- /dev/null
+++ b/examples/topology-read/Inet_small_toposample.txt
@@ -0,0 +1,20 @@
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diff --git a/examples/topology-read/Inet_toposample.txt b/examples/topology-read/Inet_toposample.txt
new file mode 100644
index 000000000..33635d8a3
--- /dev/null
+++ b/examples/topology-read/Inet_toposample.txt
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diff --git a/examples/topology-read/Orbis_toposample.txt b/examples/topology-read/Orbis_toposample.txt
new file mode 100644
index 000000000..2a7df46db
--- /dev/null
+++ b/examples/topology-read/Orbis_toposample.txt
@@ -0,0 +1,2769 @@
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diff --git a/examples/topology-read/topology-example-sim.cc b/examples/topology-read/topology-example-sim.cc
new file mode 100644
index 000000000..2abd04ea7
--- /dev/null
+++ b/examples/topology-read/topology-example-sim.cc
@@ -0,0 +1,208 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * 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: Tommaso Pecorella <tommaso.pecorella@unifi.it>
+ * Author: Valerio Sartini <valesar@gmail.com>
+ *
+ * This program conducts a simple experiment: It builds up a topology based on
+ * either Inet or Orbis trace files. A random node is then chosen, and all the
+ * other nodes will send a packet to it. The TTL is measured and reported as an histogram.
+ *
+ */
+
+#include <ctime>
+
+#include <sstream>
+
+#include "ns3/core-module.h"
+#include "ns3/common-module.h"
+#include "ns3/node-module.h"
+#include "ns3/helper-module.h"
+#include "ns3/simulator-module.h"
+
+#include "ns3/topology-read-module.h"
+#include <list>
+
+using namespace ns3;
+using namespace std;
+
+NS_LOG_COMPONENT_DEFINE ("TopologyCreationExperiment");
+
+
+static list<unsigned int> data;
+
+static void SinkRx (Ptr<const Packet> p, const Address &ad)
+{
+  Ipv4Header ipv4;
+  p->PeekHeader (ipv4);
+  std::cout << "TTL: " << (unsigned)ipv4.GetTtl () << std::endl;
+}
+
+
+// ----------------------------------------------------------------------
+// -- main
+// ----------------------------------------------
+int main (int argc, char *argv[])
+{
+
+  string format ("Inet");
+  string input ("examples/topology-read/Inet_small_toposample.txt");
+
+  // Set up command line parameters used to control the experiment.
+  CommandLine cmd;
+  cmd.AddValue ("format", "Format to use for data input [Orbis|Inet].",
+                format);
+  cmd.AddValue ("input", "Name of the input file.",
+                input);
+  cmd.Parse (argc, argv);
+
+
+  // ------------------------------------------------------------
+  // -- Read topology data.
+  // --------------------------------------------
+
+  // Pick a topology reader based in the requested format.
+
+  Ptr<TopologyReader> inFile = 0;
+  TopologyReaderHelper topoHelp;
+  
+  NodeContainer nodes;
+  
+  topoHelp.SetFileName(input);
+  topoHelp.SetFileType(format);
+  inFile = topoHelp.GetTopologyReader();
+
+  if (inFile != 0)
+    {
+      nodes = inFile->Read ();
+    }
+
+  if (inFile->LinksSize () == 0)
+    {
+      NS_LOG_ERROR ("Problems reading the topology file. Failing.");
+      return -1;
+    }
+
+  // ------------------------------------------------------------
+  // -- Create nodes and network stacks
+  // --------------------------------------------
+  NS_LOG_INFO ("creating internet stack");
+  InternetStackHelper stack;
+
+  // Setup NixVector Routing
+  Ipv4NixVectorHelper nixRouting;
+  Ipv4StaticRoutingHelper staticRouting;
+
+  Ipv4ListRoutingHelper listRH;
+  listRH.Add (staticRouting, 0);
+  listRH.Add (nixRouting, 10);
+
+  stack.SetRoutingHelper (listRH);
+  stack.Install (nodes);
+
+  NS_LOG_INFO ("creating ip4 addresses");
+  Ipv4AddressHelper address;
+  address.SetBase ("10.0.0.0", "255.255.255.252");
+
+  int totlinks = inFile->LinksSize ();
+
+  NS_LOG_INFO ("creating node containers");
+  NodeContainer nc[totlinks];
+  TopologyReader::ConstLinksIterator iter;
+  int i = 0;
+  for ( iter = inFile->LinksBegin (); iter != inFile->LinksEnd (); iter++, i++ )
+    {
+      nc[i] = NodeContainer (iter->GetFromNode (), iter->GetToNode ());
+    }
+
+  NS_LOG_INFO ("creating net device containers");
+  NetDeviceContainer ndc[totlinks];
+  PointToPointHelper p2p;
+  for (int i = 0; i < totlinks; i++)
+    {
+      // p2p.SetChannelAttribute ("Delay", TimeValue(MilliSeconds(weight[i])));
+      p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
+      p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
+      ndc[i] = p2p.Install (nc[i]);
+    }
+
+  // it crates little subnets, one for each couple of nodes.
+  NS_LOG_INFO ("creating ipv4 interfaces");
+  Ipv4InterfaceContainer ipic[totlinks];
+  for (int i = 0; i < totlinks; i++)
+    {
+      ipic[i] = address.Assign (ndc[i]);
+      address.NewNetwork ();
+    }
+
+
+  uint32_t totalNodes = nodes.GetN ();
+  UniformVariable unifRandom (0, totalNodes - 1);
+
+  unsigned int randomServerNumber = unifRandom.GetInteger (0, totalNodes - 1);
+
+  Ptr<Node> randomServerNode = nodes.Get (randomServerNumber);
+  Ptr<Ipv4> ipv4Server = randomServerNode->GetObject<Ipv4> ();
+  Ipv4InterfaceAddress iaddrServer = ipv4Server->GetAddress (1,0);
+  Ipv4Address ipv4AddrServer = iaddrServer.GetLocal ();
+
+  // ------------------------------------------------------------
+  // -- Send around packets to check the ttl
+  // --------------------------------------------
+  Config::SetDefault ("ns3::Ipv4RawSocketImpl::Protocol", StringValue ("2"));
+  InetSocketAddress dst = InetSocketAddress ( ipv4AddrServer );
+
+  OnOffHelper onoff = OnOffHelper ("ns3::Ipv4RawSocketFactory", dst);
+  onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1.0)));
+  onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0.0)));
+  onoff.SetAttribute ("DataRate", DataRateValue (DataRate (15000)));
+  onoff.SetAttribute ("PacketSize", UintegerValue (1200));
+
+  NodeContainer clientNodes;
+  for ( unsigned int i = 0; i < nodes.GetN (); i++ )
+    {
+      if (i != randomServerNumber )
+        {
+          Ptr<Node> clientNode = nodes.Get (i);
+          clientNodes.Add (clientNode);
+        }
+    }
+
+  ApplicationContainer apps = onoff.Install (clientNodes);
+  apps.Start (Seconds (1.0));
+  apps.Stop (Seconds (2.0));
+
+  PacketSinkHelper sink = PacketSinkHelper ("ns3::Ipv4RawSocketFactory", dst);
+  apps = sink.Install (randomServerNode);
+  apps.Start (Seconds (0.0));
+  apps.Stop (Seconds (3.0));
+
+  // we trap the packet sink receiver to extract the TTL.
+  Config::ConnectWithoutContext ("/NodeList/*/ApplicationList/*/$ns3::PacketSink/Rx",
+                                 MakeCallback (&SinkRx));
+
+  // ------------------------------------------------------------
+  // -- Run the simulation
+  // --------------------------------------------
+  NS_LOG_INFO ("Run Simulation.");
+  Simulator::Run ();
+  Simulator::Destroy ();
+
+  NS_LOG_INFO ("Done.");
+
+  return 0;
+
+  // end main
+}
diff --git a/examples/topology-read/waf b/examples/topology-read/waf
new file mode 100644
index 000000000..941d56b43
--- /dev/null
+++ b/examples/topology-read/waf
@@ -0,0 +1 @@
+exec "`dirname "$0"`"/../../waf "$@"
diff --git a/examples/topology-read/wscript b/examples/topology-read/wscript
new file mode 100644
index 000000000..2595b4065
--- /dev/null
+++ b/examples/topology-read/wscript
@@ -0,0 +1,5 @@
+## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
+
+def build(bld):
+    obj = bld.create_ns3_program('topology-read', ['topology-read', 'internet-stack'])
+    obj.source = 'topology-example-sim.cc'
diff --git a/src/common/cost231-propagation-loss-model.h b/src/common/cost231-propagation-loss-model.h
index eaa33d4c8..3ba7cbaec 100644
--- a/src/common/cost231-propagation-loss-model.h
+++ b/src/common/cost231-propagation-loss-model.h
@@ -74,11 +74,6 @@ public:
   void SetLambda (double frequency, double speed);
   double GetShadowing (void);
   void SetShadowing (double shadowing);
-  /**
-   * \param d the distnace between the sender and the receiver
-   * \returns the bulk path loss
-   */
-  double cost231_formula (double d); // the formula that calculates the bulk path loss
 private:
   virtual double DoCalcRxPower (double txPowerDbm, Ptr<MobilityModel> a, Ptr<MobilityModel> b) const;
   double m_BSAntennaHeight; // in meter
diff --git a/src/contrib/topology-read/inet-topology-reader.cc b/src/contrib/topology-read/inet-topology-reader.cc
new file mode 100644
index 000000000..ab1cc5dc3
--- /dev/null
+++ b/src/contrib/topology-read/inet-topology-reader.cc
@@ -0,0 +1,140 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (Valesar@gmail.com)
+ */
+
+#include <fstream>
+#include <cstdlib>
+#include <sstream>
+
+#include "ns3/log.h"
+#include "inet-topology-reader.h"
+
+using namespace std;
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("InetTopologyReader");
+
+NS_OBJECT_ENSURE_REGISTERED (InetTopologyReader);
+
+TypeId InetTopologyReader::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::InetTopologyReader")
+    .SetParent<Object> ()
+  ;
+  return tid;
+}
+
+InetTopologyReader::InetTopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+InetTopologyReader::~InetTopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+NodeContainer
+InetTopologyReader::Read (void)
+{
+  ifstream topgen;
+  topgen.open (GetFileName ().c_str ());
+  map<string, Ptr<Node> > nodeMap;
+  NodeContainer nodes;
+
+  if ( !topgen.is_open () )
+    {
+      return nodes;
+    }
+
+  string from;
+  string to;
+  string linkAttr;
+
+  int linksNumber = 0;
+  int nodesNumber = 0;
+
+  int totnode = 0;
+  int totlink = 0;
+
+  istringstream lineBuffer;
+  string line;
+
+  getline (topgen,line);
+  lineBuffer.str (line);
+
+  lineBuffer >> totnode;
+  lineBuffer >> totlink;
+  NS_LOG_INFO ("Inet topology should have " << totnode << " nodes and " << totlink << " links");
+
+  for (int i = 0; i <= totnode; i++)
+    {
+      getline (topgen,line);
+    }
+
+  for (int i = 0; i < totlink && !topgen.eof (); i++)
+    {
+      getline (topgen,line);
+      lineBuffer.clear ();
+      lineBuffer.str (line);
+
+      lineBuffer >> from;
+      lineBuffer >> to;
+      lineBuffer >> linkAttr;
+
+      if ( (!from.empty ()) && (!to.empty ()) )
+        {
+          NS_LOG_INFO ( linksNumber << " From: " << from << " to: " << to );
+
+          if ( nodeMap[from] == 0 )
+            {
+              Ptr<Node> tmpNode = CreateObject<Node> ();
+              nodeMap[from] = tmpNode;
+              nodes.Add (tmpNode);
+              nodesNumber++;
+            }
+
+          if (nodeMap[to] == 0)
+            {
+              Ptr<Node> tmpNode = CreateObject<Node> ();
+              nodeMap[to] = tmpNode;
+              nodes.Add (tmpNode);
+              nodesNumber++;
+            }
+
+          Link link ( nodeMap[from], from, nodeMap[to], to );
+          if ( !linkAttr.empty () )
+            {
+              link.SetAttribute ("Weight", linkAttr);
+            }
+          AddLink (link);
+
+          linksNumber++;
+        }
+    }
+
+  NS_LOG_INFO ("Inet topology created with " << nodesNumber << " nodes and " << linksNumber << " links");
+  topgen.close ();
+
+  return nodes;
+}
+
+} /* namespace ns3 */
diff --git a/src/contrib/topology-read/inet-topology-reader.h b/src/contrib/topology-read/inet-topology-reader.h
new file mode 100644
index 000000000..f7197129e
--- /dev/null
+++ b/src/contrib/topology-read/inet-topology-reader.h
@@ -0,0 +1,76 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#ifndef __INET_TOPOLOGY_READER_H__
+#define __INET_TOPOLOGY_READER_H__
+
+#include "ns3/nstime.h"
+
+#include "topology-reader.h"
+
+namespace ns3 {
+
+
+// ------------------------------------------------------------
+// --------------------------------------------
+/**
+ * \ingroup topology
+ * \brief Topology file reader (Inet-format type).
+ *
+ * This class takes an input file in Inet format and extracts all
+ * the informations needed to build the topology
+ * (i.e.number of nodes, links and links structure).
+ * It have been tested with Inet 3.0
+ * http://topology.eecs.umich.edu/inet/
+ *
+ * It might set a link attribute named "Weight", corresponding to
+ * the euclidean distance between two nodes, the nodes being randomly positioned.
+ */
+class InetTopologyReader : public TopologyReader
+{
+public:
+  static TypeId GetTypeId (void);
+
+  InetTopologyReader ();
+  virtual ~InetTopologyReader ();
+
+  /**
+   * \brief Main topology reading function.
+   *
+   * This method opens an input stream and reads the Inet-format file.
+   * From the first line it takes the total number of nodes and links.
+   * Then discards a number of rows equals to total nodes (containing
+   * useless geographical informations).
+   * Then reads until the end of the file (total links number rows) and saves
+   * the structure of every single link in the topology.
+   *
+   * \return the container of the nodes created (or empty container if there was an error)
+   */
+  virtual NodeContainer Read (void);
+
+  // end class InetTopologyReader
+};
+
+// end namespace ns3
+};
+
+
+#endif // __INET_TOPOLOGY_READER_H__
diff --git a/src/contrib/topology-read/orbis-topology-reader.cc b/src/contrib/topology-read/orbis-topology-reader.cc
new file mode 100644
index 000000000..04dbaf91a
--- /dev/null
+++ b/src/contrib/topology-read/orbis-topology-reader.cc
@@ -0,0 +1,121 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#include <fstream>
+#include <cstdlib>
+#include <iostream>
+#include <sstream>
+
+#include "ns3/log.h"
+#include "orbis-topology-reader.h"
+
+using namespace std;
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("OrbisTopologyReader");
+
+NS_OBJECT_ENSURE_REGISTERED (OrbisTopologyReader);
+
+TypeId OrbisTopologyReader::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::OrbisTopologyReader")
+    .SetParent<Object> ()
+  ;
+  return tid;
+}
+
+OrbisTopologyReader::OrbisTopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+OrbisTopologyReader::~OrbisTopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+NodeContainer
+OrbisTopologyReader::Read (void)
+{
+  ifstream topgen;
+  topgen.open (GetFileName ().c_str ());
+  map<string, Ptr<Node> > nodeMap;
+  NodeContainer nodes;
+
+  if ( !topgen.is_open () )
+    {
+      return nodes;
+    }
+
+  string from;
+  string to;
+  istringstream lineBuffer;
+  string line;
+
+  int linksNumber = 0;
+  int nodesNumber = 0;
+
+  while (!topgen.eof ())
+    {
+      line.clear ();
+      lineBuffer.clear ();
+      from.clear ();
+      to.clear ();
+
+      getline (topgen,line);
+      lineBuffer.str (line);
+      lineBuffer >> from;
+      lineBuffer >> to;
+
+      if ( (!from.empty ()) && (!to.empty ()) )
+        {
+          NS_LOG_INFO ( linksNumber << " From: " << from << " to: " << to );
+          if ( nodeMap[from] == 0 )
+            {
+              Ptr<Node> tmpNode = CreateObject<Node> ();
+              nodeMap[from] = tmpNode;
+              nodes.Add (tmpNode);
+              nodesNumber++;
+            }
+
+          if (nodeMap[to] == 0)
+            {
+              Ptr<Node> tmpNode = CreateObject<Node> ();
+              nodeMap[to] = tmpNode;
+              nodes.Add (tmpNode);
+              nodesNumber++;
+            }
+
+          Link link ( nodeMap[from], from, nodeMap[to], to );
+          AddLink (link);
+
+          linksNumber++;
+        }
+    }
+  NS_LOG_INFO ("Orbis topology created with " << nodesNumber << " nodes and " << linksNumber << " links");
+  topgen.close ();
+
+  return nodes;
+}
+
+} /* namespace ns3 */
+
diff --git a/src/contrib/topology-read/orbis-topology-reader.h b/src/contrib/topology-read/orbis-topology-reader.h
new file mode 100644
index 000000000..e4d66ce0a
--- /dev/null
+++ b/src/contrib/topology-read/orbis-topology-reader.h
@@ -0,0 +1,73 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#ifndef __ORBIS_TOPOLOGY_READER_H__
+#define __ORBIS_TOPOLOGY_READER_H__
+
+#include "ns3/nstime.h"
+
+#include "topology-reader.h"
+
+namespace ns3 {
+
+
+// ------------------------------------------------------------
+// --------------------------------------------
+/**
+ * \ingroup topology
+ * \brief Topology file reader (Orbis-format type).
+ *
+ * This class takes an input file in Orbis format and extracts all
+ * the informations needed to build the topology
+ * (i.e.number of nodes, links and links structure).
+ * It have been tested with Orbis 0.70
+ * http://www.sysnet.ucsd.edu/~pmahadevan/topo_research/topo.html
+ */
+class OrbisTopologyReader : public TopologyReader
+{
+public:
+  static TypeId GetTypeId (void);
+
+  OrbisTopologyReader ();
+  virtual ~OrbisTopologyReader ();
+
+  /**
+   * \brief Main topology reading function.
+   *
+   * This method opens an input stream and reads the Orbis-format file.
+   * Every row represents a topology link (the ids of a couple of nodes),
+   * so the input file is read line by line to figure out how many links
+   * and nodes are in the topology.
+   *
+   * \return the container of the nodes created (or empty container if there was an error)
+   */
+  virtual NodeContainer Read (void);
+
+  // end class OrbisTopologyReader
+};
+
+// end namespace ns3
+};
+
+
+#endif // __ORBIS_TOPOLOGY_READER_H__
+
+
diff --git a/src/contrib/topology-read/topology-reader.cc b/src/contrib/topology-read/topology-reader.cc
new file mode 100644
index 000000000..a09080aca
--- /dev/null
+++ b/src/contrib/topology-read/topology-reader.cc
@@ -0,0 +1,169 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#include "ns3/log.h"
+
+#include "topology-reader.h"
+
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("TopologyReader");
+
+NS_OBJECT_ENSURE_REGISTERED (TopologyReader);
+
+TypeId TopologyReader::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::TopologyReader")
+    .SetParent<Object> ()
+  ;
+  return tid;
+}
+
+TopologyReader::TopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+TopologyReader::~TopologyReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+void
+TopologyReader::SetFileName (const std::string fileName)
+{
+  m_fileName = fileName;
+}
+
+std::string
+TopologyReader::GetFileName () const
+{
+  return m_fileName;
+}
+
+/* Manipulating the address block */
+
+TopologyReader::ConstLinksIterator
+TopologyReader::LinksBegin (void) const
+{
+  return m_linksList.begin ();
+}
+
+TopologyReader::ConstLinksIterator
+TopologyReader::LinksEnd (void) const
+{
+  return m_linksList.end ();
+}
+
+int
+TopologyReader::LinksSize (void) const
+{
+  return m_linksList.size ();
+}
+
+bool
+TopologyReader::LinksEmpty (void) const
+{
+  return m_linksList.empty ();
+}
+
+void
+TopologyReader::AddLink (Link link)
+{
+  m_linksList.push_back (link);
+  return;
+}
+
+
+TopologyReader::Link::Link ( Ptr<Node> fromPtr, std::string fromName, Ptr<Node> toPtr, std::string toName )
+{
+  m_fromPtr = fromPtr;
+  m_fromName = fromName;
+  m_toPtr = toPtr;
+  m_toName = toName;
+}
+
+TopologyReader::Link::Link ()
+{
+}
+
+
+Ptr<Node> TopologyReader::Link::GetFromNode (void) const
+{
+  return m_fromPtr;
+}
+
+std::string
+TopologyReader::Link::GetFromNodeName (void) const
+{
+  return m_fromName;
+}
+
+Ptr<Node>
+TopologyReader::Link::GetToNode (void) const
+{
+  return m_toPtr;
+}
+
+std::string
+TopologyReader::Link::GetToNodeName (void) const
+{
+  return m_toName;
+}
+
+std::string
+TopologyReader::Link::GetAttribute (std::string name)
+{
+  NS_ASSERT_MSG (m_linkAttr.find ("name") == m_linkAttr.end (), "Requested topology link attribute not found");
+  return m_linkAttr[name];
+}
+
+bool
+TopologyReader::Link::GetAttributeFailSafe (std::string name, std::string &value)
+{
+  if ( m_linkAttr.find ("name") == m_linkAttr.end () )
+    {
+      return false;
+    }
+  value = m_linkAttr[name];
+  return true;
+}
+
+void
+TopologyReader::Link::SetAttribute (std::string name, std::string &value)
+{
+  m_linkAttr[name] = value;
+}
+
+TopologyReader::Link::ConstAttributesIterator
+TopologyReader::Link::AttributesBegin (void)
+{
+  return m_linkAttr.begin ();
+}
+TopologyReader::Link::ConstAttributesIterator
+TopologyReader::Link::AttributesEnd (void)
+{
+  return m_linkAttr.end ();
+}
+
+
+} /* namespace ns3 */
diff --git a/src/contrib/topology-read/topology-reader.h b/src/contrib/topology-read/topology-reader.h
new file mode 100644
index 000000000..a913ebd06
--- /dev/null
+++ b/src/contrib/topology-read/topology-reader.h
@@ -0,0 +1,203 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#ifndef __TOPOLOGY_READER_H__
+#define __TOPOLOGY_READER_H__
+
+#include <string>
+#include <map>
+#include <list>
+
+#include "ns3/object.h"
+#include "ns3/node-container.h"
+
+
+namespace ns3 {
+
+/**
+ * \defgroup topology Topology Input Readers
+ */
+
+/**
+ * \ingroup topology
+ * \brief Interface for input file readers management.
+ *
+ * This interface perform the shared tasks among all possible input file readers.
+ * Each different file format is handled by its own topology reader.
+ */
+class TopologyReader : public Object
+{
+
+public:
+  /**
+   * \ingroup topology
+   * \brief Inner class holding the details about a link between two nodes.
+   *
+   * The link is not described in terms of technology. Rather it is only stating
+   * an association between two nodes. The nodes are characterized also with names
+   * reflecting how the nodes are called in the original topology file.
+   */
+  class Link
+  {
+public:
+    typedef std::map<std::string, std::string >::const_iterator ConstAttributesIterator;
+
+    Link ( Ptr<Node> fromPtr, std::string fromName, Ptr<Node> toPtr, std::string toName );
+
+    /**
+     * \brief Returns a Ptr<Node> to the "from" node of the link
+     * \return a Ptr<Node> to the "from" node of the link
+     */
+    Ptr<Node> GetFromNode (void) const;
+    /**
+     * \brief Returns the name of the "from" node of the link
+     * \return the name of the "from" node of the link
+     */
+    std::string GetFromNodeName (void) const;
+    /**
+     * \brief Returns a Ptr<Node> to the "to" node of the link
+     * \return a Ptr<Node> to the "to" node of the link
+     */
+    Ptr<Node> GetToNode (void) const;
+    /**
+     * \brief Returns the name of the "to" node of the link
+     * \return the name of the "to" node of the link
+     */
+    std::string GetToNodeName (void) const;
+    /**
+     * \brief Returns the value of a link attribute. The attribute must exist.
+     *
+     * \param name the name of the attribute
+     *
+     * \return the value of the attribute
+     */
+    std::string GetAttribute (std::string name);
+    /**
+     * \brief Returns the value of a link attribute.
+     * \param name the name of the attribute
+     * \param value the value of the attribute
+     *
+     * \return true if the attribute was defined, false otherwise.
+     */
+    bool GetAttributeFailSafe (std::string name, std::string &value);
+    /**
+     * \brief Sets an arbitrary link attribute.
+     * \param name the name of the attribute
+     * \param value the value of the attribute
+     */
+    void SetAttribute (std::string name, std::string &value);
+    /**
+     * \brief Returns an iterator to the begin of the attributes.
+     * \return a const iterator to the first attribute of a link.
+     */
+    ConstAttributesIterator AttributesBegin (void);
+    /**
+     * \brief Returns an iterator to the end of the attributes.
+     * \return a const iterator to the last attribute of a link.
+     */
+    ConstAttributesIterator AttributesEnd (void);
+
+private:
+    Link ();
+    std::string m_fromName;
+    Ptr< Node > m_fromPtr;
+    std::string m_toName;
+    Ptr< Node > m_toPtr;
+    std::map<std::string, std::string > m_linkAttr;
+  };
+
+  /**
+   * \brief Contant iterator to the list of the links.
+   */
+  typedef std::list< Link >::const_iterator ConstLinksIterator;
+
+  static TypeId GetTypeId (void);
+
+  TopologyReader ();
+  virtual ~TopologyReader ();
+
+  /**
+   * \brief Main topology reading function.
+   *
+   * The data is parsed and the results are returned in the passed lists.
+   * The rationale behind this choice is to allow non-progressive node IDs
+   * in the topology files, as well as to separate the topology
+   * reader from the choices about actual IP number assignment and
+   * kind of links between nodes.
+   *
+   * \return the container of the nodes created (or null if there was an error)
+   */
+  virtual NodeContainer Read (void) = 0;
+
+  /**
+   * \brief Sets the input file name.
+   * \param fileName the input file name.
+   */
+  void SetFileName (const std::string fileName);
+
+  /**
+   * \brief Returns the input file name.
+   * \return the input file name.
+   */
+  std::string GetFileName (void) const;
+
+  /**
+   * \brief Returns an iterator to the the first link in this block.
+   * \return a const iterator to the first link in this block.
+   */
+  ConstLinksIterator LinksBegin (void) const;
+
+  /**
+   * \brief Returns an iterator to the the last link in this block.
+   * \return a const iterator to the last link in this block.
+   */
+  ConstLinksIterator LinksEnd (void) const;
+
+  /**
+   * \brief Returns the number of links in this block.
+   * \return the number of links in this block.
+   */
+  int LinksSize (void) const;
+
+  /**
+   * \brief Checks if the block contains any links.
+   * \return true if there are no links in this block, false otherwise.
+   */
+  bool LinksEmpty (void) const;
+
+  /**
+   * \brief Adds a link to the topology.
+   * \param link the link to be added.
+   */
+  void AddLink (Link link);
+
+private:
+  std::string m_fileName;
+  std::list<Link> m_linksList;
+
+  // end class TopologyReader
+};
+
+// end namespace ns3
+};
+
+
+#endif // __TOPOLOGY_READER_H__
diff --git a/src/contrib/topology-read/topology.h b/src/contrib/topology-read/topology.h
new file mode 100644
index 000000000..8b55480d6
--- /dev/null
+++ b/src/contrib/topology-read/topology.h
@@ -0,0 +1,32 @@
+/**
+ * \addtogroup topology Topology Input Readers
+ *
+ * The topology modules aim at reading a topology file generated by an automatic topology generator.
+ *
+ * The process is divided in two steps:
+ * - running a topology generator to build a topology file
+ * - reading the topology file and build a ns-3 simulation
+ *
+ * Hence, model is focused on being able to read correctly the various topology formats.
+ *
+ * Currently there are two models:
+ * - Orbis 0.7
+ * - Inet 3.0
+ *
+ * A good source for topology data is also Archipelago (http://www.caida.org/projects/ark/)
+ *
+ * The current Archipelago Measurements, monthly updated, are stored here:
+ * http://data.caida.org/datasets/topology/ipv4.allpref24-aslinks/
+ * (complete notation and triple data source, one for each working group)
+ *
+ * A different and more compact notation that signs only the AS-relationships is here:
+ * http://www.caida.org/data/active/as-relationships/index.xml
+ * (a sort of more Orbis-like format)
+ *
+ * The compact notation can be easily stripped down to a pure Orbis format, just removing
+ * the double relationships (the compact format use one-way links, while Orbis use two-way
+ * links) and pruning the 3rd parameter. Note that with the compact data Orbis can then be
+ * used create a rescaled version of the topology, thus being the most effective way
+ * (to my best knowledge) to make an internet-like topology.
+ *
+ */
diff --git a/src/contrib/topology-read/wscript b/src/contrib/topology-read/wscript
new file mode 100644
index 000000000..5bd79388b
--- /dev/null
+++ b/src/contrib/topology-read/wscript
@@ -0,0 +1,17 @@
+## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
+
+def build(bld):
+    obj = bld.create_ns3_module('topology-read')
+    obj.source = [
+       'topology-reader.cc',
+       'inet-topology-reader.cc',
+       'orbis-topology-reader.cc',
+        ]
+    headers = bld.new_task_gen('ns3header')
+    headers.module = 'topology-read'
+    headers.source = [
+       'topology-reader.h',
+       'inet-topology-reader.h',
+       'orbis-topology-reader.h',
+        ]
+
diff --git a/src/devices/wimax/bandwidth-manager.h b/src/devices/wimax/bandwidth-manager.h
index e0ac5fbc9..522e844fc 100644
--- a/src/devices/wimax/bandwidth-manager.h
+++ b/src/devices/wimax/bandwidth-manager.h
@@ -64,6 +64,9 @@ public:
   void SetSubframeRatio (void);
   uint32_t GetSymbolsPerFrameAllocated (void);
 private:
+  BandwidthManager (const BandwidthManager &);
+  BandwidthManager& operator= (const BandwidthManager &);
+
   Ptr<WimaxNetDevice> m_device;
   uint16_t m_nrBwReqsSent;
 };
diff --git a/src/devices/wimax/bs-link-manager.h b/src/devices/wimax/bs-link-manager.h
index aeb52826c..aedb105c7 100644
--- a/src/devices/wimax/bs-link-manager.h
+++ b/src/devices/wimax/bs-link-manager.h
@@ -57,6 +57,9 @@ public:
    */
   void VerifyInvitedRanging (Cid cid, uint8_t uiuc);
 private:
+  BSLinkManager (const BSLinkManager &);
+  BSLinkManager & operator= (const BSLinkManager &);
+
   void PerformRanging (Cid cid, RngReq rngreq);
   void PerformInitialRanging (Cid cid, RngReq *rngreq, RngRsp *rngrsp);
   void PerformInvitedRanging (Cid cid, RngRsp *rngrsp);
diff --git a/src/devices/wimax/bs-net-device.h b/src/devices/wimax/bs-net-device.h
index 8dbb52638..e58a5b619 100644
--- a/src/devices/wimax/bs-net-device.h
+++ b/src/devices/wimax/bs-net-device.h
@@ -117,14 +117,6 @@ public:
    * \returns the number of retries on contention Ranging
    */
   uint8_t GetMaxInvitedRangRetries (void) const;
-  /**
-   * \param maxDsaResponseRetries the number of retries on DSA request message
-   */
-  void SetMaxDsaReqRetries (uint8_t maxDsaResponseRetries);
-  /**
-   * \returns the number of retries on DSA request message
-   */
-  uint8_t GetMaxDsaReqRetries (void) const;
   /**
    * \param rangReqOppSize The ranging opportunity size in symbols
    */
diff --git a/src/devices/wimax/burst-profile-manager.h b/src/devices/wimax/burst-profile-manager.h
index 5367f7526..147ccd151 100644
--- a/src/devices/wimax/burst-profile-manager.h
+++ b/src/devices/wimax/burst-profile-manager.h
@@ -66,6 +66,9 @@ public:
                                                    const RngReq *rngreq);
   uint8_t GetBurstProfileToRequest (void);
 private:
+  BurstProfileManager (const BurstProfileManager &);
+  BurstProfileManager& operator= (const BurstProfileManager &);
+
   Ptr<WimaxNetDevice> m_device;
 };
 
diff --git a/src/devices/wimax/cid-factory.h b/src/devices/wimax/cid-factory.h
index 1ec625c12..cc0b7dabe 100644
--- a/src/devices/wimax/cid-factory.h
+++ b/src/devices/wimax/cid-factory.h
@@ -44,12 +44,6 @@ namespace ns3 {
 class CidFactory
 {
 public:
-  /**
-   * \param m the value of the 'm' parameter to use for this factory
-   *
-   * The semantics of this parameter are defined in Table 345 ieee-802.16-2004
-   */
-  CidFactory (uint16_t m);
   /**
    * Create a cid factory with a default value for m of 0x5500.
    */
diff --git a/src/devices/wimax/dl-mac-messages.h b/src/devices/wimax/dl-mac-messages.h
index b319fea0c..721dd3da3 100644
--- a/src/devices/wimax/dl-mac-messages.h
+++ b/src/devices/wimax/dl-mac-messages.h
@@ -95,7 +95,6 @@ public:
   void SetTtg (uint8_t ttg);
   void SetRtg (uint8_t rtg);
 
-  void SetChnlSwitchFrameNr (uint32_t chnlSwitchFrameNr);
   void SetBaseStationId (Mac48Address baseStationId);
   void SetFrameDurationCode (uint8_t frameDurationCode);
   void SetFrameNumber (uint32_t frameNumber);
@@ -104,7 +103,6 @@ public:
   uint8_t GetTtg (void) const;
   uint8_t GetRtg (void) const;
 
-  uint32_t GetChnlSwitchFrameNr (void) const;
   Mac48Address GetBaseStationId (void) const;
   uint8_t GetFrameDurationCode (void) const;
   uint32_t GetFrameNumber (void) const;
diff --git a/src/devices/wimax/mac-messages.h b/src/devices/wimax/mac-messages.h
index 189b9a8a3..73e9a5543 100644
--- a/src/devices/wimax/mac-messages.h
+++ b/src/devices/wimax/mac-messages.h
@@ -341,7 +341,6 @@ class DsaRsp : public Header
 public:
   DsaRsp (void);
   ~DsaRsp (void);
-  DsaRsp (ServiceFlow sf);
 
   void SetTransactionId (uint16_t transactionId);
   uint16_t GetTransactionId (void) const;
diff --git a/src/devices/wimax/packet-burst.h b/src/devices/wimax/packet-burst.h
index 58eafd0be..f6b5f772e 100644
--- a/src/devices/wimax/packet-burst.h
+++ b/src/devices/wimax/packet-burst.h
@@ -64,7 +64,6 @@ public:
   std::list<Ptr<Packet> >::const_iterator End (void) const;
 private:
   void DoDispose (void);
-  friend bool operator == (const PacketBurst &a, const PacketBurst &b);
   std::list<Ptr<Packet> > m_packets;
 };
 } // namespace ns3
diff --git a/src/devices/wimax/service-flow-manager.h b/src/devices/wimax/service-flow-manager.h
index 2536efba7..9b03dc4aa 100644
--- a/src/devices/wimax/service-flow-manager.h
+++ b/src/devices/wimax/service-flow-manager.h
@@ -51,7 +51,6 @@ public:
   ~ServiceFlowManager (void);
   void DoDispose (void);
 
-  void defineServiceFlow (void);
   void AddServiceFlow (ServiceFlow * serviceFlow);
   ServiceFlow* GetServiceFlow (uint32_t sfid) const;
   ServiceFlow* GetServiceFlow (Cid cid) const;
diff --git a/src/devices/wimax/ss-link-manager.h b/src/devices/wimax/ss-link-manager.h
index 6c5c5bca1..e18553b1f 100644
--- a/src/devices/wimax/ss-link-manager.h
+++ b/src/devices/wimax/ss-link-manager.h
@@ -64,6 +64,9 @@ public:
                                 SubscriberStationNetDevice::EventType eventType,
                                 bool deleteUlParameters, EventId &eventId);
 private:
+  SSLinkManager (const SSLinkManager &);
+  SSLinkManager & operator= (const SSLinkManager &);
+
   void EndScanning (bool status, uint64_t frequency);
   void StartSynchronizing (void);
   bool SearchForDlChannel (uint8_t channel);
diff --git a/src/devices/wimax/ss-record.h b/src/devices/wimax/ss-record.h
index 781b2ca2c..83b2dab0b 100644
--- a/src/devices/wimax/ss-record.h
+++ b/src/devices/wimax/ss-record.h
@@ -62,9 +62,6 @@ public:
   uint8_t GetInvitedRangRetries (void) const;
   void ResetInvitedRangingRetries (void);
   void IncrementInvitedRangingRetries (void);
-  uint8_t GetDsaReqRetries (void) const;
-  void ResetDsaReqRetries (void);
-  void IncrementDsaReqRetries (void);
   void SetModulationType (WimaxPhy::ModulationType modulationType);
   WimaxPhy::ModulationType GetModulationType (void) const;
 
diff --git a/src/devices/wimax/ss-scheduler.h b/src/devices/wimax/ss-scheduler.h
index 28d7535eb..72148c998 100644
--- a/src/devices/wimax/ss-scheduler.h
+++ b/src/devices/wimax/ss-scheduler.h
@@ -58,6 +58,9 @@ public:
   void DoDispose (void);
 protected:
 private:
+  SSScheduler (const SSScheduler &);
+  SSScheduler & operator= (const SSScheduler &);
+
   Ptr<WimaxConnection> SelectConnection (void);
   Ptr<SubscriberStationNetDevice> m_ss;
   bool m_pollMe;
diff --git a/src/devices/wimax/ss-service-flow-manager.h b/src/devices/wimax/ss-service-flow-manager.h
index b7fb78e5b..eeea8feb1 100644
--- a/src/devices/wimax/ss-service-flow-manager.h
+++ b/src/devices/wimax/ss-service-flow-manager.h
@@ -70,16 +70,10 @@ public:
    * \return the maximum retries on DSA request message
    */
   uint8_t GetMaxDsaReqRetries (void) const;
-  /**
-   * \return the maximum retries on DSA response message
-   */
-  uint8_t GetMaxDsaRspRetries (void) const;
 
   EventId GetDsaRspTimeoutEvent (void) const;
   EventId GetDsaAckTimeoutEvent (void) const;
 
-  void AllocateServiceFlows (const DsaReq &dsaReq, Cid cid);
-
   void InitiateServiceFlows (void);
 
   DsaReq CreateDsaReq (const ServiceFlow *serviceFlow);
diff --git a/src/devices/wimax/wimax-net-device.h b/src/devices/wimax/wimax-net-device.h
index 78ba8f752..4daf029a9 100644
--- a/src/devices/wimax/wimax-net-device.h
+++ b/src/devices/wimax/wimax-net-device.h
@@ -214,13 +214,13 @@ public:
   virtual Address GetMulticast (Ipv4Address multicastGroup) const;
   virtual bool IsBridge (void) const;
 
-  Ptr<Object> GetMobility (void);
-  void SetMobility (Ptr<Object> mobility);
-
   bool IsPromisc (void);
   void NotifyPromiscTrace (Ptr<Packet> p);
 
 private:
+  WimaxNetDevice (const WimaxNetDevice &);
+  WimaxNetDevice & operator= (const WimaxNetDevice &);
+
   virtual bool DoSend (Ptr<Packet> packet,
                        const Mac48Address& source,
                        const Mac48Address& dest,
diff --git a/src/helper/topology-reader-helper.cc b/src/helper/topology-reader-helper.cc
new file mode 100644
index 000000000..75663e331
--- /dev/null
+++ b/src/helper/topology-reader-helper.cc
@@ -0,0 +1,80 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#include "ns3/object.h"
+#include "ns3/topology-reader-helper.h"
+#include "ns3/inet-topology-reader.h"
+#include "ns3/orbis-topology-reader.h"
+#include "ns3/log.h"
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("TopologyReaderHelper");
+
+TopologyReaderHelper::TopologyReaderHelper ()
+{
+  m_inFile = 0;
+}
+
+void
+TopologyReaderHelper::SetFileName (const std::string fileName)
+{
+  m_fileName = fileName;
+}
+
+void
+TopologyReaderHelper::SetFileType (const std::string fileType)
+{
+  m_fileType = fileType;
+}
+
+
+Ptr<TopologyReader>
+TopologyReaderHelper::GetTopologyReader ()
+{
+  if (!m_inFile)
+    {
+      NS_ASSERT_MSG (!m_fileType.empty (), "Missing File Type");
+      NS_ASSERT_MSG (!m_fileName.empty (), "Missing File Name");
+
+      if (m_fileType == "Orbis")
+        {
+          NS_LOG_INFO ("Creating Orbis formatted data input.");
+          m_inFile = CreateObject<OrbisTopologyReader> ();
+        }
+      else if (m_fileType == "Inet")
+        {
+          NS_LOG_INFO ("Creating Inet formatted data input.");
+          m_inFile = CreateObject<InetTopologyReader> ();
+        }
+      else
+        {
+          NS_ASSERT_MSG (false, "Wrong (unknown) File Type");
+        }
+
+      m_inFile->SetFileName (m_fileName);
+    }
+  return m_inFile;
+}
+
+
+
+} // namespace ns3
diff --git a/src/helper/topology-reader-helper.h b/src/helper/topology-reader-helper.h
new file mode 100644
index 000000000..24e7bfd81
--- /dev/null
+++ b/src/helper/topology-reader-helper.h
@@ -0,0 +1,66 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Universita' di Firenze, Italy
+ *
+ * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
+ * Author: Valerio Sartini (valesar@gmail.com)
+ */
+
+#ifndef TOPOLOGY_READER_HELPER_H
+#define TOPOLOGY_READER_HELPER_H
+
+#include "ns3/topology-reader.h"
+#include <string>
+
+namespace ns3 {
+
+/**
+ * \ingroup topology
+ * \brief Helper class which makes it easier to configure and use a generic TopologyReader.
+ */
+class TopologyReaderHelper
+{
+public:
+  TopologyReaderHelper ();
+
+  /**
+   * \brief Sets the input file name.
+   * \param fileName the input file name.
+   */
+  void SetFileName (const std::string fileName);
+
+  /**
+   * \brief Sets the input file type. Supported file types are "Orbis" and "Inet".
+   * \param fileType the input file type.
+   */
+  void SetFileType (const std::string fileType);
+
+  /**
+   * \brief Gets a Ptr<TopologyReader> to the actual TopologyReader.
+   * \return the created Topoloy Reader (or null if there was an error).
+   */
+  Ptr<TopologyReader> GetTopologyReader ();
+
+private:
+  Ptr<TopologyReader> m_inFile;
+  std::string m_fileName;
+  std::string m_fileType;
+};
+
+} // namespace ns3
+
+
+#endif /* TOPOLOGY_READER_HELPER_H */
diff --git a/src/helper/wscript b/src/helper/wscript
index ae5202b61..d462df4c0 100644
--- a/src/helper/wscript
+++ b/src/helper/wscript
@@ -50,6 +50,7 @@ def build(bld):
         'udp-client-server-helper.cc',
         'trace-helper.cc',
         'wimax-helper.cc',
+        'topology-reader-helper.cc',
         ]
 
     headers = bld.new_task_gen('ns3header')
@@ -103,6 +104,7 @@ def build(bld):
         'udp-client-server-helper.h',
         'trace-helper.h',
         'wimax-helper.h',
+        'topology-reader-helper.h',
         ]
 
     env = bld.env_of_name('default')
diff --git a/src/wscript b/src/wscript
index 2d9875775..82beef993 100644
--- a/src/wscript
+++ b/src/wscript
@@ -51,6 +51,7 @@ all_modules = (
     'applications/udp-client-server',
     'devices/wimax',
     'mpi',
+    'contrib/topology-read',
     )
 
 def set_options(opt):
diff --git a/test.py b/test.py
index 3c8f39932..abe6b5f37 100755
--- a/test.py
+++ b/test.py
@@ -127,6 +127,8 @@ example_tests = [
     ("tcp/tcp-nsc-zoo", "ENABLE_NSC == True", "True"),
     ("tcp/tcp-star-server", "True", "True"),
 
+    ("topology-read/topology-read --input=../../examples/topology-read/Inet_small_toposample.txt", "True", "True"),
+
     ("tunneling/virtual-net-device", "True", "True"),
 
     ("tutorial/first", "True", "True"),