diff --git a/model/ndn_contentpacket.cc b/model/ndn_contentpacket.cc
new file mode 100644
index 0000000..6d64497
--- /dev/null
+++ b/model/ndn_contentpacket.cc
@@ -0,0 +1,8 @@
+//
+//  ndn_contentpacket.cpp
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#include "ndn_contentpacket.h"
diff --git a/model/ndn_contentpacket.h b/model/ndn_contentpacket.h
new file mode 100644
index 0000000..1d5fe73
--- /dev/null
+++ b/model/ndn_contentpacket.h
@@ -0,0 +1,22 @@
+//
+//  ndn_contentpacket.h
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#ifndef ndn_contentpacket_h
+#define ndn_contentpacket_h
+
+#include "ns3/header.h"
+#include <ns3/packet.h>
+
+namespace ns3
+{
+    class InterestPacket : public Packet 
+    {
+        
+    };
+}
+
+#endif 
\ No newline at end of file
diff --git a/model/ndn_face.cc b/model/ndn_face.cc
new file mode 100644
index 0000000..c540eeb
--- /dev/null
+++ b/model/ndn_face.cc
@@ -0,0 +1,13 @@
+//
+//  ndn_face.cpp
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#include "ndn_face.h"
+
+namespace ns3 
+{
+    
+}
\ No newline at end of file
diff --git a/model/ndn_face.h b/model/ndn_face.h
new file mode 100644
index 0000000..4ea9c20
--- /dev/null
+++ b/model/ndn_face.h
@@ -0,0 +1,29 @@
+//
+//  ndn_face.h
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#ifndef ndn_face_h
+#define ndn_face_h
+
+#include "ns3/header.h"
+
+namespace ns3
+{
+    // see http://www.ccnx.org/releases/latest/doc/ccode/html/structface.html
+    class NdnFace
+    {
+        public:
+            NdnFace(int faceID);
+            virtual ~NdnFace();
+        
+        private:
+        int m_faceID;
+        
+    };
+    
+}
+
+#endif
\ No newline at end of file
diff --git a/model/ndn_interestpacket.cc b/model/ndn_interestpacket.cc
new file mode 100644
index 0000000..3c9d962
--- /dev/null
+++ b/model/ndn_interestpacket.cc
@@ -0,0 +1,13 @@
+//
+//  ndn_interestpacket.cc
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#include "ndn_interestpacket.h"
+
+namespace ns3
+{
+
+}
\ No newline at end of file
diff --git a/model/ndn_interestpacket.h b/model/ndn_interestpacket.h
new file mode 100644
index 0000000..fddc136
--- /dev/null
+++ b/model/ndn_interestpacket.h
@@ -0,0 +1,25 @@
+//
+//  ndn_interestpacket.h
+//  Abstraction
+//
+//  Copyright 2011 UCLA. All rights reserved.
+//
+
+#ifndef ndn_interestpacket_h
+#define ndn_interestpacket_h
+
+//#define CCN_INTEREST_LIFETIME_SEC 4
+//#define CCN_INTEREST_LIFETIME_MICROSEC (CCN_INTEREST_LIFETIME_SEC * 1000000)
+
+#include "ns3/header.h"
+#include <ns3/packet.h>
+
+namespace ns3
+{
+    class InterestPacket : public Packet 
+    {
+        
+    };
+}
+
+#endif 
\ No newline at end of file