diff --git a/src/delegation.cpp b/src/delegation.cpp
new file mode 100644
index 0000000..178b1d0
--- /dev/null
+++ b/src/delegation.cpp
@@ -0,0 +1,55 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2017 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#include "delegation.hpp"
+
+namespace ndn {
+
+BOOST_CONCEPT_ASSERT((boost::EqualityComparable<Delegation>));
+
+bool
+operator==(const Delegation& lhs, const Delegation& rhs)
+{
+  return lhs.preference == rhs.preference &&
+         lhs.name == rhs.name;
+}
+
+bool
+operator<(const Delegation& lhs, const Delegation& rhs)
+{
+  return std::tie(lhs.preference, lhs.name) <
+         std::tie(rhs.preference, rhs.name);
+}
+
+bool
+operator<=(const Delegation& lhs, const Delegation& rhs)
+{
+  return std::tie(lhs.preference, lhs.name) <=
+         std::tie(rhs.preference, rhs.name);
+}
+
+std::ostream&
+operator<<(std::ostream& os, const Delegation& del)
+{
+  return os << del.name << '(' << del.preference << ')';
+}
+
+} // namespace ndn