diff --git a/model/ndn-interest-header.cc b/model/ndn-interest-header.cc
new file mode 100644
index 0000000..192cae5
--- /dev/null
+++ b/model/ndn-interest-header.cc
@@ -0,0 +1,268 @@
+/* -*- 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: Ilya Moiseenko <iliamo@cs.ucla.edu>
+ *         Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+///< #CCN_PR_SCOPE0 (0x20) local scope,
+///< #CCN_PR_SCOPE1 (0x40) this host,
+///< #CCN_PR_SCOPE2 (0x80) immediate neighborhood
+
+#include "ndn-interest-header.h"
+
+#include "ns3/log.h"
+#include "ns3/unused.h"
+#include "../helper/ndn-encoding-helper.h"
+#include "../helper/ndn-decoding-helper.h"
+
+NS_LOG_COMPONENT_DEFINE ("NdnInterestHeader");
+
+namespace ns3
+{
+
+NS_OBJECT_ENSURE_REGISTERED (NdnInterestHeader);
+
+TypeId
+NdnInterestHeader::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::NdnInterestHeader")
+    .SetGroupName ("Ndn")
+    .SetParent<Header> ()
+    .AddConstructor<NdnInterestHeader> ()
+    ;
+  return tid;
+}
+  
+
+NdnInterestHeader::NdnInterestHeader ()
+  : m_minSuffixComponents (-1)
+  , m_maxSuffixComponents (-1)
+  , m_childSelector (false)
+  , m_answerOriginKind (false)
+  , m_scope (-1)
+  , m_interestLifetime (Seconds (0))
+  , m_nonce (0)
+  , m_nackType (NORMAL_INTEREST)
+{
+}
+
+void
+NdnInterestHeader::SetName (const Ptr<NdnNameComponents> &name)
+{
+  m_name = name;
+}
+
+const NdnNameComponents&
+NdnInterestHeader::GetName () const
+{
+  if (m_name==0) throw NdnInterestHeaderException();
+  return *m_name;
+}
+
+Ptr<const NdnNameComponents>
+NdnInterestHeader::GetNamePtr () const
+{
+  return m_name;
+}
+
+void
+NdnInterestHeader::SetMinSuffixComponents (int32_t value)
+{
+  m_minSuffixComponents = value;
+}
+
+int32_t
+NdnInterestHeader::GetMinSuffixComponents () const
+{
+  return m_minSuffixComponents;
+}
+
+void
+NdnInterestHeader::SetMaxSuffixComponents (int32_t value)
+{
+  m_maxSuffixComponents = value;
+}
+
+int32_t
+NdnInterestHeader::GetMaxSuffixComponents () const
+{
+  return m_maxSuffixComponents;
+}
+
+void
+NdnInterestHeader::SetExclude (const Ptr<NdnNameComponents> &exclude)
+{
+  m_exclude = exclude;
+}
+
+bool
+NdnInterestHeader::IsEnabledExclude () const
+{
+  return m_exclude!=0;
+}
+
+const NdnNameComponents&
+NdnInterestHeader::GetExclude () const
+{
+  if (m_exclude==0) throw NdnInterestHeaderException();
+  return *m_exclude;
+}
+
+void
+NdnInterestHeader::SetChildSelector (bool value)
+{
+  m_childSelector = value;
+}
+
+bool
+NdnInterestHeader::IsEnabledChildSelector () const
+{
+  return m_childSelector;
+}
+
+void
+NdnInterestHeader::SetAnswerOriginKind (bool value)
+{
+  m_answerOriginKind = value;
+}
+
+bool
+NdnInterestHeader::IsEnabledAnswerOriginKind () const
+{
+  return m_answerOriginKind;
+}
+
+void
+NdnInterestHeader::SetScope (int8_t scope)
+{
+  m_scope = scope;
+}
+
+int8_t
+NdnInterestHeader::GetScope () const
+{
+  return m_scope;
+}
+
+void
+NdnInterestHeader::SetInterestLifetime (Time lifetime)
+{
+  m_interestLifetime = lifetime;
+}
+
+Time
+NdnInterestHeader::GetInterestLifetime () const
+{
+  return m_interestLifetime;
+}
+
+void
+NdnInterestHeader::SetNonce (uint32_t nonce)
+{
+  m_nonce = nonce;
+}
+
+uint32_t
+NdnInterestHeader::GetNonce () const
+{
+  return m_nonce;
+}
+
+void
+NdnInterestHeader::SetNack (uint32_t nackType)
+{
+  m_nackType = nackType;
+}
+
+uint32_t
+NdnInterestHeader::GetNack () const
+{
+  return m_nackType;
+}
+
+uint32_t
+NdnInterestHeader::GetSerializedSize (void) const
+{
+  // unfortunately, we don't know exact header size in advance
+  return NdnEncodingHelper::GetSerializedSize (*this);
+}
+    
+void
+NdnInterestHeader::Serialize (Buffer::Iterator start) const
+{
+  size_t size = NdnEncodingHelper::Serialize (start, *this);
+  NS_UNUSED (size);
+  NS_LOG_INFO ("Serialize size = " << size);
+}
+
+uint32_t
+NdnInterestHeader::Deserialize (Buffer::Iterator start)
+{
+  return NdnDecodingHelper::Deserialize (start, *this); // \todo Debugging is necessary
+}
+
+TypeId
+NdnInterestHeader::GetInstanceTypeId (void) const
+{
+  return GetTypeId ();
+}
+  
+void
+NdnInterestHeader::Print (std::ostream &os) const
+{
+  os << "I: " << GetName ();
+  
+  return;
+  os << "<Interest>\n  <Name>" << GetName () << "</Name>\n";
+  if (GetNack ()>0)
+    {
+      os << "  <NACK>";
+      switch (GetNack ())
+        {
+        case NACK_LOOP:
+          os << "loop";
+          break;
+        case NACK_CONGESTION:
+          os << "congestion";
+          break;
+        default:
+          os << "unknown";
+          break;
+        }
+      os << "</NACK>\n";
+    }
+  if (GetMinSuffixComponents () >= 0)
+    os << "  <MinSuffixComponents>" << GetMinSuffixComponents () << "</MinSuffixComponents>\n";
+  if (GetMaxSuffixComponents () >= 0)
+    os << "  <MaxSuffixComponents>" << m_maxSuffixComponents << "</MaxSuffixComponents>\n";
+  if (IsEnabledExclude () && GetExclude ().size()>0)
+    os << "  <Exclude>" << GetExclude () << "</Exclude>\n";
+  if (IsEnabledChildSelector ())
+    os << "  <ChildSelector />\n";
+  if (IsEnabledAnswerOriginKind ())
+    os << "  <AnswerOriginKind />\n";
+  if (GetScope () >= 0)
+    os << "  <Scope>" << GetScope () << "</Scope>\n";
+  if ( !GetInterestLifetime ().IsZero() )
+    os << "  <InterestLifetime>" << GetInterestLifetime () << "</InterestLifetime>\n";
+  if (GetNonce ()>0)
+    os << "  <Nonce>" << GetNonce () << "</Nonce>\n";
+  os << "</Interest>";
+}
+
+}