diff --git a/model/pit/ccnx-pit.cc b/model/pit/ccnx-pit.cc
new file mode 100644
index 0000000..00e58c7
--- /dev/null
+++ b/model/pit/ccnx-pit.cc
@@ -0,0 +1,100 @@
+/* -*- 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: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "ccnx-pit.h"
+
+#include "ns3/ccnx-interest-header.h"
+#include "ns3/ccnx-content-object-header.h"
+
+#include "ns3/log.h"
+#include "ns3/string.h"
+#include "ns3/uinteger.h"
+#include "ns3/simulator.h"
+
+#include <boost/lambda/bind.hpp>
+#include <boost/lambda/lambda.hpp>
+
+NS_LOG_COMPONENT_DEFINE ("CcnxPit");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED (CcnxPit);
+
+using namespace __ccnx_private;
+
+TypeId
+CcnxPit::GetTypeId ()
+{
+  static TypeId tid = TypeId ("ns3::private::CcnxPit")
+    .SetGroupName ("Ccnx")
+    .SetParent<Object> ()
+    // .AddAttribute ("CleanupTimeout",
+    //                "Timeout defining how frequent RIT should be cleaned up",
+    //                StringValue ("1s"),
+    //                MakeTimeAccessor (&CcnxPit::GetCleanupTimeout, &CcnxPit::SetCleanupTimeout),
+    //                MakeTimeChecker ())
+    
+    .AddAttribute ("PitEntryPruningTimout",
+                   "Timeout for PIT entry to live after being satisfied. To make sure recently satisfied interest will not be satisfied again",
+                   StringValue ("100ms"),
+                   MakeTimeAccessor (&CcnxPit::m_PitEntryPruningTimout),
+                   MakeTimeChecker ())
+    ;
+
+  return tid;
+}
+
+CcnxPit::CcnxPit ()
+{
+}
+
+CcnxPit::~CcnxPit ()
+{
+}
+
+// void CcnxPit::CleanExpired ()
+// {
+//   DoCleanExpired ();
+  
+//   // schedule next event  
+//   m_cleanupEvent = Simulator::Schedule (m_cleanupTimeout,
+//                                         &CcnxPit::CleanExpired, this); 
+// }
+
+// void
+// CcnxPit::SetCleanupTimeout (const Time &timeout)
+// {
+//   m_cleanupTimeout = timeout;
+//   if (m_cleanupEvent.IsRunning ())
+//     m_cleanupEvent.Cancel (); // cancel any scheduled cleanup events
+
+//   // schedule even with new timeout
+//   m_cleanupEvent = Simulator::Schedule (m_cleanupTimeout,
+//                                         &CcnxPit::CleanExpired, this); 
+// }
+
+// Time
+// CcnxPit::GetCleanupTimeout () const
+// {
+//   return m_cleanupTimeout;
+// }
+
+
+} // namespace ns3