diff --git a/examples/syntactic-topology-ndnabstraction.cc b/examples/syntactic-topology-ndnabstraction.cc
new file mode 100644
index 0000000..c400fff
--- /dev/null
+++ b/examples/syntactic-topology-ndnabstraction.cc
@@ -0,0 +1,137 @@
+/*
+ *  sync-topology-ndnabstraction.cpp
+ *  XcodeProject
+ *
+ *  Created by Ilya on 7/18/11.
+ *  Copyright 2011 __MyCompanyName__. All rights reserved.
+ *
+ */
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/internet-module.h"
+#include "ns3/point-to-point-module.h"
+#include "ns3/applications-module.h"
+
+using namespace ns3;
+
+NS_LOG_COMPONENT_DEFINE ("SyncTopologyNDNabstraction");
+
+int 
+main (int argc, char *argv[])
+{
+  // Set up some default values for the simulation.  Use the 
+  
+  Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (210));
+  Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("448kb/s"));
+  
+  // Allow the user to override any of the defaults and the above
+  // DefaultValue::Bind ()s at run-time, via command-line arguments
+  CommandLine cmd;
+  cmd.Parse (argc, argv);
+  
+  // Here, we will explicitly create seven nodes. 
+  NS_LOG_INFO ("Create nodes.");
+  NodeContainer c;
+  c.Create (7);
+  
+  
+  NodeContainer n13 = NodeContainer (c.Get (0), c.Get (2));
+  NodeContainer n23 = NodeContainer (c.Get (1), c.Get (3));
+  NodeContainer n35 = NodeContainer (c.Get (2), c.Get (4));
+  NodeContainer n34 = NodeContainer (c.Get (2), c.Get (3));
+  NodeContainer n45 = NodeContainer (c.Get (3), c.Get (4));
+  NodeContainer n56 = NodeContainer (c.Get (4), c.Get (5));
+  NodeContainer n57 = NodeContainer (c.Get (4), c.Get (6));
+  
+  Ipv4StaticRoutingHelper staticRouting;
+  
+  Ipv4ListRoutingHelper list;
+  list.Add (staticRouting, 1);
+  
+  //Add static routing
+  InternetStackHelper internet;
+  internet.SetRoutingHelper (list); // has effect on the next Install ()
+  internet.Install (c);
+  
+  // We create the channels first without any IP addressing information
+  NS_LOG_INFO ("Create channels.");
+  PointToPointHelper p2p;
+  p2p.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));
+  p2p.SetChannelAttribute ("Delay", StringValue ("1ms"));
+  NetDeviceContainer nd13 = p2p.Install (n13);
+  NetDeviceContainer nd23 = p2p.Install (n23);
+  NetDeviceContainer nd56 = p2p.Install (n56);
+  
+  p2p.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));
+  p2p.SetChannelAttribute ("Delay", StringValue ("50ms"));
+  NetDeviceContainer nd57 = p2p.Install (n57);
+  
+  p2p.SetDeviceAttribute ("DataRate", StringValue ("1Mbps"));
+  p2p.SetChannelAttribute ("Delay", StringValue ("1ms"));
+  NetDeviceContainer nd34 = p2p.Install (n34);
+  NetDeviceContainer nd45 = p2p.Install (n45);
+  
+  p2p.SetDeviceAttribute ("DataRate", StringValue ("1Mbps"));
+  p2p.SetChannelAttribute ("Delay", StringValue ("50ms"));
+  NetDeviceContainer nd35 = p2p.Install (n35);
+  
+  // Later, we add IP addresses.
+  NS_LOG_INFO ("Assign IP Addresses.");
+  Ipv4AddressHelper ipv4;
+  ipv4.SetBase ("192.168.1.0", "255.255.255.0");
+  Ipv4InterfaceContainer i13 = ipv4.Assign (nd13);
+  Ipv4InterfaceContainer i23 = ipv4.Assign (nd23);
+  Ipv4InterfaceContainer i35 = ipv4.Assign (nd35);
+  Ipv4InterfaceContainer i34 = ipv4.Assign (nd34);
+  Ipv4InterfaceContainer i45 = ipv4.Assign (nd45);
+  Ipv4InterfaceContainer i56 = ipv4.Assign (nd56);
+  Ipv4InterfaceContainer i57 = ipv4.Assign (nd57);
+  
+  
+  // Create the OnOff application to send UDP datagrams of size
+  // 210 bytes at a rate of 448 Kb/s from n0 to n4
+  NS_LOG_INFO ("Create Applications.");
+  uint16_t port = 9;   // Discard port (RFC 863)
+  
+  std::string sendsizeattr = "SendSize";
+  //flow2 7-->2
+  BulkSendHelper bulksend0 ("ns3::UdpSocketFactory", InetSocketAddress (i23.GetAddress (0), port));
+  //bulksend0.SetAttribute(sendsizeattr, AttributeValue(ConstantVariable(2560)));
+  bulksend0.SetAttribute("MaxBytes", UintegerValue(2560));
+  ApplicationContainer apps = bulksend0.Install(c.Get(6));
+  apps.Start(Seconds (1.0));
+  apps.Stop(Seconds (10.0));
+  
+  // Create a packet sink to receive these packets
+  PacketSinkHelper sink0 ("ns3::UdpSocketFactory", InetSocketAddress(Ipv4Address::GetAny (), port));
+  apps = sink0.Install(c.Get(1));
+  apps.Start(Seconds(0.0));
+  apps.Stop(Seconds(20.0));
+  
+  //flow1 1-->6
+  BulkSendHelper bulksend ("ns3::UdpSocketFactory", InetSocketAddress (i56.GetAddress (1), port));
+  //bulksend.SetAttribute(sendsizeattr, AttributeValue( ConstantVariable(2560)));
+  bulksend0.SetAttribute("MaxBytes", UintegerValue(2560));
+  apps = bulksend.Install (c.Get (0));
+  apps.Start (Seconds (6.0));
+  apps.Stop (Seconds (20.0));
+  
+  // Create a packet sink to receive these packets
+  PacketSinkHelper sink ("ns3::UdpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), port));
+  apps = sink.Install (c.Get (5));
+  apps.Start(Seconds(0.0));
+  apps.Stop(Seconds(20.0));
+  
+  AsciiTraceHelper ascii;
+  p2p.EnableAsciiAll (ascii.CreateFileStream ("sync-topology-ndnabstraction.tr"));
+  p2p.EnablePcapAll ("sync-topology-ndnabstraction");
+  
+  Simulator::Stop (Seconds (20));
+  
+  NS_LOG_INFO ("Run Simulation.");
+  Simulator::Run ();
+  Simulator::Destroy ();
+  NS_LOG_INFO ("Done.");
+  
+	return 0;
+}
diff --git a/helper/ndnabstraction-helper.cc b/helper/ndnabstraction-helper.cc
new file mode 100644
index 0000000..e02c5eb
--- /dev/null
+++ b/helper/ndnabstraction-helper.cc
@@ -0,0 +1,15 @@
+/*
+ *  ndnabstraction-helper.c
+ *  XcodeProject
+ *
+ *  Created by Ilya Moiseenko on 7/18/11.
+ *  Copyright 2011 University of California, Los Angeles. All rights reserved.
+ *
+ */
+
+#include "ndnabstraction-helper.h"
+
+namespace ns3{
+
+}
+
diff --git a/model/ndnabstraction-header.cc b/model/ndnabstraction-header.cc
new file mode 100644
index 0000000..9b0eecb
--- /dev/null
+++ b/model/ndnabstraction-header.cc
@@ -0,0 +1,11 @@
+/*
+ *  ndnabstraction-header.c
+ *  XcodeProject
+ *
+ *  Created by Ilya Moiseenko on 7/18/11.
+ *  Copyright 2011 University of California, Los Angeles. All rights reserved.
+ *
+ */
+
+#include "ndnabstraction-header.h"
+#include "ns3/assert.h"
\ No newline at end of file
diff --git a/test/ndnabstraction-basictest.cc b/test/ndnabstraction-basictest.cc
new file mode 100644
index 0000000..66f4fcc
--- /dev/null
+++ b/test/ndnabstraction-basictest.cc
@@ -0,0 +1,11 @@
+/*
+ *  ndnabstraction-basictest.c
+ *  XcodeProject
+ *
+ *  Created by Ilya Moiseenko on 7/18/11.
+ *  Copyright 2011 University of California, Los Angeles. All rights reserved.
+ *
+ */
+
+#include "ndnabstraction-basictest.h"
+