diff --git a/model/fib/ccnx-fib-impl.cc b/model/fib/ccnx-fib-impl.cc
new file mode 100644
index 0000000..107f072
--- /dev/null
+++ b/model/fib/ccnx-fib-impl.cc
@@ -0,0 +1,252 @@
+/* -*- 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-fib-impl.h"
+
+#include "ns3/ccnx.h"
+#include "ns3/ccnx-face.h"
+#include "ns3/ccnx-interest-header.h"
+
+#include "ns3/node.h"
+#include "ns3/assert.h"
+#include "ns3/names.h"
+#include "ns3/log.h"
+
+#include <boost/ref.hpp>
+#include <boost/lambda/lambda.hpp>
+#include <boost/lambda/bind.hpp>
+namespace ll = boost::lambda;
+
+NS_LOG_COMPONENT_DEFINE ("CcnxFibImpl");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED (CcnxFibImpl);
+
+TypeId 
+CcnxFibImpl::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::CcnxFib") // cheating ns3 object system
+    .SetParent<CcnxFib> ()
+    .SetGroupName ("Ccnx")
+    .AddConstructor<CcnxFibImpl> ()
+  ;
+  return tid;
+}
+
+CcnxFibImpl::CcnxFibImpl ()
+{
+}
+
+void
+CcnxFibImpl::NotifyNewAggregate ()
+{
+  Object::NotifyNewAggregate ();
+}
+
+void 
+CcnxFibImpl::DoDispose (void)
+{
+  clear ();
+  Object::DoDispose ();
+}
+
+
+Ptr<CcnxFibEntry>
+CcnxFibImpl::LongestPrefixMatch (const CcnxInterestHeader &interest)
+{
+  super::iterator item = super::longest_prefix_match (interest.GetName ());
+  // @todo use predicate to search with exclude filters
+
+  if (item == super::end ())
+    return 0;
+  else
+    return item->payload ();
+}
+
+
+Ptr<CcnxFibEntry>
+CcnxFibImpl::Add (const CcnxNameComponents &prefix, Ptr<CcnxFace> face, int32_t metric)
+{
+  return Add (Create<CcnxNameComponents> (prefix), face, metric);
+}
+  
+Ptr<CcnxFibEntry>
+CcnxFibImpl::Add (const Ptr<const CcnxNameComponents> &prefix, Ptr<CcnxFace> face, int32_t metric)
+{
+  NS_LOG_FUNCTION (this->GetObject<Node> ()->GetId () << boost::cref(*prefix) << boost::cref(*face) << metric);
+
+  // will add entry if doesn't exists, or just return an iterator to the existing entry
+  std::pair< super::iterator, bool > result = super::insert (*prefix, 0);
+  if (result.first != super::end ())
+    {
+      if (result.second)
+        {
+            Ptr<CcnxFibEntryImpl> newEntry = Create<CcnxFibEntryImpl> (prefix);
+            newEntry->SetTrie (result.first);
+            result.first->set_payload (newEntry);
+        }
+  
+      super::modify (result.first,
+                     ll::bind (&CcnxFibEntry::AddOrUpdateRoutingMetric, ll::_1, face, metric));
+    
+      return result.first->payload ();
+    }
+  else
+    return 0;
+}
+
+void
+CcnxFibImpl::Remove (const Ptr<const CcnxNameComponents> &prefix)
+{
+  NS_LOG_FUNCTION (this->GetObject<Node> ()->GetId () << boost::cref(*prefix));
+
+  super::erase (*prefix);
+}
+
+// void
+// CcnxFibImpl::Invalidate (const Ptr<const CcnxNameComponents> &prefix)
+// {
+//   NS_LOG_FUNCTION (this->GetObject<Node> ()->GetId () << boost::cref(*prefix));
+
+//   super::iterator foundItem, lastItem;
+//   bool reachLast;
+//   boost::tie (foundItem, reachLast, lastItem) = super::getTrie ().find (*prefix);
+  
+//   if (!reachLast || lastItem->payload () == 0)
+//     return; // nothing to invalidate
+
+//   super::modify (lastItem,
+//                  ll::bind (&CcnxFibEntry::Invalidate, ll::_1));
+// }
+
+void
+CcnxFibImpl::InvalidateAll ()
+{
+  NS_LOG_FUNCTION (this->GetObject<Node> ()->GetId ());
+
+  super::parent_trie::recursive_iterator item (super::getTrie ());
+  super::parent_trie::recursive_iterator end (0);
+  for (; item != end; item++)
+    {
+      if (item->payload () == 0) continue;
+
+      super::modify (&(*item),
+                     ll::bind (&CcnxFibEntry::Invalidate, ll::_1));
+    }
+}
+
+void
+CcnxFibImpl::Remove (super::parent_trie &item, Ptr<CcnxFace> face)
+{
+  if (item.payload () == 0) return;
+  NS_LOG_FUNCTION (this);
+
+  super::modify (&item,
+                 ll::bind (&CcnxFibEntry::RemoveFace, ll::_1, face));
+}
+
+void
+CcnxFibImpl::RemoveFromAll (Ptr<CcnxFace> face)
+{
+  NS_LOG_FUNCTION (this);
+
+  std::for_each (super::parent_trie::recursive_iterator (super::getTrie ()),
+                 super::parent_trie::recursive_iterator (0), 
+                 ll::bind (static_cast< void (CcnxFib::*) (super::parent_trie &, Ptr<CcnxFace>) > (&CcnxFibImpl::Remove),
+                           this, ll::_1, face));
+
+  super::parent_trie::recursive_iterator trieNode (super::getTrie ());
+  super::parent_trie::recursive_iterator end (0);
+  for (; trieNode != end; trieNode++)
+    {
+      if (trieNode->payload () == 0) continue;
+      
+      if (trieNode->payload ()->m_faces.size () == 0)
+        {
+          trieNode = super::parent_trie::recursive_iterator (trieNode->erase ());
+        }
+    }
+}
+
+void
+CcnxFibImpl::Print (std::ostream &os) const
+{
+  // !!! unordered_set imposes "random" order of item in the same level !!!
+  super::parent_trie::const_recursive_iterator item (super::getTrie ());
+  super::parent_trie::const_recursive_iterator end (0);
+  for (; item != end; item++)
+    {
+      if (item->payload () == 0) continue;
+
+      os << item->payload ()->GetPrefix () << "\t" << *item->payload () << "\n";
+    }
+}
+
+uint32_t
+CcnxFibImpl::GetSize () const
+{
+  return super::getPolicy ().size ();
+}
+
+Ptr<const CcnxFibEntry>
+CcnxFibImpl::Begin ()
+{
+  super::parent_trie::const_recursive_iterator item (super::getTrie ());
+  super::parent_trie::const_recursive_iterator end (0);
+  for (; item != end; item++)
+    {
+      if (item->payload () == 0) continue;
+      break;
+    }
+
+  if (item == end)
+    return End ();
+  else
+    return item->payload ();
+}
+
+Ptr<const CcnxFibEntry>
+CcnxFibImpl::End ()
+{
+  return 0;
+}
+
+Ptr<const CcnxFibEntry>
+CcnxFibImpl::Next (Ptr<const CcnxFibEntry> from)
+{
+  if (from == 0) return 0;
+  
+  super::parent_trie::const_recursive_iterator item (*StaticCast<const CcnxFibEntryImpl> (from)->to_iterator ());
+  super::parent_trie::const_recursive_iterator end (0);
+  for (item++; item != end; item++)
+    {
+      if (item->payload () == 0) continue;
+      break;
+    }
+
+  if (item == end)
+    return End ();
+  else
+    return item->payload ();
+}
+
+
+} // namespace ns3