diff -r 1b8a736858cc src/common/sequence.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/common/sequence.cc	Tue Jun 15 14:24:53 2010 -0400
@@ -0,0 +1,149 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * 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
+ *
+ */
+
+#include <stdint.h>
+#include <limits>
+
+#include "ns3/assert.h"
+#include "ns3/log.h"
+#include "ns3/fatal-error.h"
+#include "ns3/test.h"
+#include "sequence.h"
+
+namespace ns3 {
+
+template <class T>
+void
+Sequence::Set (T * sequence, T value)
+{
+  *sequence = value;
+}
+
+template <class T>
+void 
+Sequence::Inc (T * sequence)
+{
+  *sequence = *sequence + 1;
+}
+
+template <class T>
+void 
+Sequence::Inc (T * sequence, T count)
+{
+  *sequence = *sequence + count;
+}
+
+template <class T>
+void 
+Sequence::Dec (T * sequence)
+{
+  *sequence = *sequence - 1;
+}
+
+template <class T>
+void 
+Sequence::Dec (T * sequence, T count)
+{
+  *sequence = *sequence - count;
+}
+
+template <class T>
+bool
+Sequence::IsEqual (T sequence, T other)
+{
+  return sequence == other;
+}
+
+// From RFC 3626:
+//
+// The sequence number S1 is said to be "greater than" the sequence
+// number S2 if:
+//
+//         S1 > S2 AND S1 - S2 <= MAXVALUE/2 OR
+//
+//         S2 > S1 AND S2 - S1 > MAXVALUE/2
+template <class T>
+bool
+Sequence::IsGreater (T sequence, T other)
+{
+  static const T halfMaxValue = std::numeric_limits<T>::max () / 2;
+
+  return (((sequence > other) && (sequence - other) <= halfMaxValue)
+          || ((other > sequence) && (other - sequence) > halfMaxValue));
+}
+
+template <class T>
+bool
+Sequence::IsGreaterOrEqual (T sequence, T other)
+{
+  return (IsGreater (sequence, other) || IsEqual (sequence, other));
+}
+ 
+template <class T>
+bool
+Sequence::IsLess (T sequence, T other)
+{
+  return !(IsGreaterOrEqual (sequence, other));
+}
+
+template <class T>
+bool
+Sequence::IsLessOrEqual (T sequence, T other)
+{
+  return !(IsGreater (sequence, other));
+}
+
+//-----------------------------------------------------------------------------
+// Unit tests
+//-----------------------------------------------------------------------------
+class SequenceTest: public TestCase {
+public:
+  virtual bool DoRun (void);
+  SequenceTest ();
+};
+
+
+SequenceTest::SequenceTest ()
+  : TestCase ("Sequence Number") {}
+
+bool
+SequenceTest::DoRun (void)
+{
+  /* Will actually write some tests once it is clear this is 
+     headed in the right direction
+   */
+  uint16_t num1 (60900);
+  NS_TEST_EXPECT_MSG_EQ (Sequence::IsEqual(num1, num1), true, "IsEqual");
+
+  return GetErrorStatus ();
+}
+//-----------------------------------------------------------------------------
+class SequenceTestSuite : public TestSuite
+{
+public:
+  SequenceTestSuite ();
+};
+
+SequenceTestSuite::SequenceTestSuite ()
+  : TestSuite ("sequence-number", UNIT)
+{
+  AddTestCase (new SequenceTest);
+}
+
+SequenceTestSuite g_sequenceTestSuite;
+
+} // namespace ns3
diff -r 1b8a736858cc src/common/sequence.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/common/sequence.h	Tue Jun 15 14:24:53 2010 -0400
@@ -0,0 +1,114 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * 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
+ *
+ */
+
+#ifndef SEQUENCE_H
+#define SEQUENCE_H
+
+namespace ns3 {
+
+/**
+ * \brief Generic sequence number class
+ *
+ * This generic sequence number class is templated to easily support 
+ * 8, 16, 32, or 64 bit sequence numbers.  The design of this class 
+ * was chosen to facilitate tracing these sequence numbers.
+ */
+
+class Sequence
+{
+public:
+  /**
+    * \param sequence the sequence number to set
+    * \param value the value to set the sequence number
+    */
+  template<class T> static void Set (T * sequence, T value);
+
+  /**
+    * \param sequence the sequence number to increment
+    *
+    * Increment the sequence number by one.
+    */
+  template<class T> static void Inc (T * sequence);
+
+  /**
+    * \param sequence the sequence number to increment
+    * \param count the number to increment the sequence number
+    *
+    * Increment the sequence number by count.
+    */
+  template<class T> static void Inc (T * sequence, T count);
+
+  /**
+    * \param sequence the sequence number to decrement
+    *
+    * Decrement the sequence number by one.
+    */
+  template<class T> static void Dec (T * sequence);
+
+  /**
+    * \param sequence the sequence number to decrement
+    * \param count the number to decrement the sequence number
+    *
+    * Decrement sequence number by count.
+    */
+  template<class T> static void Dec (T * sequence, T count);
+
+  /**
+    * \return true if parameters equal, false otherwise.
+    *
+    * \param sequence the sequence number
+    * \param other the other sequence number for comparison
+    */
+  template<class T> static bool IsEqual (T sequence, T other);
+
+  /**
+    * \return true if first argument is greater than the second
+    *
+    * \param sequence the sequence number
+    * \param other the other sequence number for comparison
+    */
+  template<class T> static bool IsGreater (T sequence, T other);
+
+  /**
+    * \return true if first argument is greater than or equal to the second
+    *
+    * \param sequence the sequence number
+    * \param other the other sequence number for comparison
+    */
+  template<class T> static bool IsGreaterOrEqual (T sequence, T other);
+
+  /**
+    * \return true if first argument is less than the second
+    *
+    * \param sequence the sequence number
+    * \param other the other sequence number for comparison
+    */
+  template<class T> static bool IsLess (T sequence, T other);
+
+  /**
+    * \return true if first argument is less than or equal to the second
+    *
+    * \param sequence the sequence number
+    * \param other the other sequence number for comparison
+    */
+  template<class T> static bool IsLessOrEqual (T sequence, T other);
+
+};
+
+} // namespace ns3
+
+#endif /* SEQUENCE_H */
diff -r 1b8a736858cc src/common/wscript
--- a/src/common/wscript	Mon Jun 14 17:35:42 2010 +0100
+++ b/src/common/wscript	Tue Jun 15 14:24:53 2010 -0400
@@ -34,6 +34,7 @@
         'spectrum-type.cc',
         'spectrum-propagation-loss-model.cc',
         'friis-spectrum-propagation-loss.cc',
+        'sequence.cc',
         ]
 
     headers = bld.new_task_gen('ns3header')
@@ -67,4 +68,5 @@
         'spectrum-type.h',
         'spectrum-propagation-loss-model.h',
         'friis-spectrum-propagation-loss.h',
+        'sequence.h',
         ]