diff --git a/helper/tracers/ccnx-seqs-app-tracer.h b/helper/tracers/ccnx-seqs-app-tracer.h
new file mode 100644
index 0000000..b0fd618
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+++ b/helper/tracers/ccnx-seqs-app-tracer.h
@@ -0,0 +1,71 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011 UCLA
+ *
+ * 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>
+ */
+
+#ifndef CCNX_SEQS_APP_TRACER_H
+#define CCNX_SEQS_APP_TRACER_H
+
+#include "ns3/ccnx-app-tracer.h"
+
+namespace ns3 {
+
+class CcnxSeqsAppTracer : public CcnxAppTracer
+{
+public:
+  CcnxSeqsAppTracer (std::ostream &os, const std::string &app, Ptr<Node> node, const std::string &appId = "*");
+  CcnxSeqsAppTracer (std::ostream &os, const std::string &app, const std::string &node, const std::string &appId = "*");
+  virtual ~CcnxSeqsAppTracer () { };
+
+  virtual void
+  PrintHeader (std::ostream &os) const;
+
+  virtual void
+  Print (std::ostream &os) const;
+
+  virtual void
+  OutInterests (std::string context,
+                Ptr<const CcnxInterestHeader>, Ptr<CcnxApp>, Ptr<CcnxFace>);
+
+  virtual void
+  InInterests  (std::string context,
+                Ptr<const CcnxInterestHeader>, Ptr<CcnxApp>, Ptr<CcnxFace>);
+
+  virtual void
+  InNacks (std::string context,
+           Ptr<const CcnxInterestHeader>, Ptr<CcnxApp>, Ptr<CcnxFace>);
+
+  virtual void
+  OutData (std::string context,
+           Ptr<const CcnxContentObjectHeader>, Ptr<const Packet>, Ptr<CcnxApp>, Ptr<CcnxFace>);
+  
+  virtual void
+  InData  (std::string context,
+           Ptr<const CcnxContentObjectHeader>, Ptr<const Packet>, Ptr<CcnxApp>, Ptr<CcnxFace>);
+
+protected:
+  void
+  Reset ();
+
+protected:
+  std::ostream& m_os;
+};
+
+} // namespace ns3
+
+#endif // CCNX_AGGREGATE_APP_TRACER_H