diff --git a/src/util/logger.cpp b/src/util/logger.cpp
deleted file mode 100644
index e4b3b41..0000000
--- a/src/util/logger.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-/* -*- 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 "logger.hpp"
-
-#include "time.hpp"
-
-#include <cinttypes>
-#include <cstring>
-
-namespace ndn {
-namespace util {
-
-std::ostream&
-operator<<(std::ostream& os, LogLevel level)
-{
-  switch (level) {
-  case LogLevel::FATAL:
-    return os << "FATAL";
-  case LogLevel::NONE:
-    return os << "NONE";
-  case LogLevel::ERROR:
-    return os << "ERROR";
-  case LogLevel::WARN:
-    return os << "WARN";
-  case LogLevel::INFO:
-    return os << "INFO";
-  case LogLevel::DEBUG:
-    return os << "DEBUG";
-  case LogLevel::TRACE:
-    return os << "TRACE";
-  case LogLevel::ALL:
-    return os << "ALL";
-  }
-
-  BOOST_THROW_EXCEPTION(std::invalid_argument("unknown log level " + to_string(static_cast<int>(level))));
-}
-
-LogLevel
-parseLogLevel(const std::string& s)
-{
-  if (s == "FATAL")
-    return LogLevel::FATAL;
-  else if (s == "NONE")
-    return LogLevel::NONE;
-  else if (s == "ERROR")
-    return LogLevel::ERROR;
-  else if (s == "WARN")
-    return LogLevel::WARN;
-  else if (s == "INFO")
-    return LogLevel::INFO;
-  else if (s == "DEBUG")
-    return LogLevel::DEBUG;
-  else if (s == "TRACE")
-    return LogLevel::TRACE;
-  else if (s == "ALL")
-    return LogLevel::ALL;
-
-  BOOST_THROW_EXCEPTION(std::invalid_argument("unrecognized log level '" + s + "'"));
-}
-
-/**
- * \brief checks if incoming logger name meets criteria
- * \param name name of logger
- */
-static bool
-isValidLoggerName(const std::string& name)
-{
-  // acceptable characters for Logger name
-  const char* okChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789~#%_<>.-";
-  if (std::strspn(name.c_str(), okChars) != name.size()) {
-    return false;
-  }
-  if (name.empty() || name.front() == '.' || name.back() == '.') {
-    return false;
-  }
-  if (name.find("..") != std::string::npos) {
-    return false;
-  }
-  return true;
-}
-
-Logger::Logger(const std::string& name)
-  : m_moduleName(name)
-{
-}
-
-} // namespace util
-} // namespace ndn
diff --git a/src/util/logger.hpp b/src/util/logger.hpp
index e406ef6..570b77e 100644
--- a/src/util/logger.hpp
+++ b/src/util/logger.hpp
@@ -22,98 +22,14 @@
 #ifndef NDN_UTIL_LOGGER_HPP
 #define NDN_UTIL_LOGGER_HPP
 
-#include "../common.hpp"
-
-#ifdef HAVE_NDN_CXX_CUSTOM_LOGGER
-#include "ndn-cxx-custom-logger.hpp"
-#else
-
-#include <atomic>
-
 #include "ns3/log.h"
 
 namespace ndn {
 namespace util {
 
-/** \brief indicates the severity level of a log message
- */
-enum class LogLevel {
-  FATAL   = -1,   ///< fatal (will be logged unconditionally)
-  NONE    = 0,    ///< no messages
-  ERROR   = 1,    ///< serious error messages
-  WARN    = 2,    ///< warning messages
-  INFO    = 3,    ///< informational messages
-  DEBUG   = 4,    ///< debug messages
-  TRACE   = 5,    ///< trace messages (most verbose)
-  ALL     = 255   ///< all messages
-};
-
-/** \brief output LogLevel as string
- *  \throw std::invalid_argument unknown \p level
- */
-std::ostream&
-operator<<(std::ostream& os, LogLevel level);
-
-/** \brief parse LogLevel from string
- *  \throw std::invalid_argument unknown level name
- */
-LogLevel
-parseLogLevel(const std::string& s);
-
-/** \brief represents a logger in logging facility
- *  \note User should declare a new logger with \p NDN_LOG_INIT macro.
- */
-class Logger
-{
-public:
-  explicit
-  Logger(const std::string& name);
-
-  const std::string&
-  getModuleName() const
-  {
-    return m_moduleName;
-  }
-
-  bool
-  isLevelEnabled(LogLevel level) const
-  {
-    return m_currentLevel.load(std::memory_order_relaxed) >= level;
-  }
-
-  void
-  setLevel(LogLevel level)
-  {
-    m_currentLevel.store(level, std::memory_order_relaxed);
-  }
-
-private:
-  const std::string m_moduleName;
-  std::atomic<LogLevel> m_currentLevel;
-};
-
 /** \brief declare a log module
- *
- *  \note Logger name is restricted to alphanumeric characters and a select set of
- *  symbols: `~`, `#`, `%`, `_`, `<`, `>`, `.`, `-`
- *  A logger name must not start or end with `.` or contain consecutive `.`
  */
-#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE(BOOST_STRINGIZE(name));
-
-/** \brief a tag that writes a timestamp upon stream output
- *  \code
- *  std::clog << LoggerTimestamp();
- *  \endcode
- */
-struct LoggerTimestamp
-{
-};
-
-/** \brief write a timestamp to \p os
- *  \note This function is thread-safe.
- */
-std::ostream&
-operator<<(std::ostream& os, const LoggerTimestamp&);
+#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE("ndn-cxx." BOOST_STRINGIZE(name));
 
 #define NDN_LOG_TRACE(expression) NS_LOG_LOGIC(expression)
 #define NDN_LOG_DEBUG(expression) NS_LOG_DEBUG(expression)
@@ -125,6 +41,4 @@
 } // namespace util
 } // namespace ndn
 
-#endif // HAVE_NDN_CXX_CUSTOM_LOGGER
-
 #endif // NDN_UTIL_LOGGER_HPP