diff --git a/model/sync-ns3-name-info.cc b/model/sync-ns3-name-info.cc
new file mode 100644
index 0000000..459486f
--- /dev/null
+++ b/model/sync-ns3-name-info.cc
@@ -0,0 +1,73 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2012 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: Zhenkai Zhu <zhenkai@cs.ucla.edu>
+ *         卞超轶 Chaoyi Bian <bcy@pku.edu.cn>
+ *	   Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "sync-ns3-name-info.h"
+#include "ns3/ccnx-name-components.h"
+
+#include <boost/lexical_cast.hpp>
+#include <utility>
+
+using namespace std;
+using namespace boost;
+
+namespace Sync {
+
+NameInfoConstPtr
+Ns3NameInfo::FindOrCreate (ns3::Ptr<const ns3::CcnxNameComponents> name)
+{
+  string key = lexical_cast<string> (*name);
+
+  NameInfoPtr value = NameInfoPtr (new Ns3NameInfo (name));
+  pair<NameMap::iterator,bool> item =
+    m_names.insert (make_pair (key, value));
+
+  return item.first->second;
+}
+
+Ns3NameInfo::Ns3NameInfo (ns3::Ptr<const ns3::CcnxNameComponents> name)
+  : m_name (name)
+{
+  m_id = m_ids ++; // set ID for a newly inserted element
+  // m_digest << *name;
+}
+
+string
+Ns3NameInfo::toString () const
+{
+  return lexical_cast<std::string> (*m_name);
+}
+
+bool
+Ns3NameInfo::operator == (const NameInfo &info) const
+{
+  try
+    {
+      return *m_name == *dynamic_cast<const Ns3NameInfo&> (info).m_name;
+    }
+  catch (...)
+    {
+      return false;
+    }
+}
+
+
+} // Sync