diff --git a/daemon/fw/access-strategy.cpp b/daemon/fw/access-strategy.cpp
index ece5a83..e726d27 100644
--- a/daemon/fw/access-strategy.cpp
+++ b/daemon/fw/access-strategy.cpp
@@ -50,16 +50,15 @@
                                      shared_ptr<fib::Entry> fibEntry,
                                      shared_ptr<pit::Entry> pitEntry)
 {
-  RetransmissionSuppression::Result suppressResult =
-      m_retransmissionSuppression.decide(inFace, interest, *pitEntry);
+  RetxSuppression::Result suppressResult = m_retxSuppression.decide(inFace, interest, *pitEntry);
   switch (suppressResult) {
-  case RetransmissionSuppression::NEW:
+  case RetxSuppression::NEW:
     this->afterReceiveNewInterest(inFace, interest, fibEntry, pitEntry);
     break;
-  case RetransmissionSuppression::FORWARD:
+  case RetxSuppression::FORWARD:
     this->afterReceiveRetxInterest(inFace, interest, fibEntry, pitEntry);
     break;
-  case RetransmissionSuppression::SUPPRESS:
+  case RetxSuppression::SUPPRESS:
     NFD_LOG_DEBUG(interest << " interestFrom " << inFace.getId() << " retx-suppress");
     break;
   default:
diff --git a/daemon/fw/access-strategy.hpp b/daemon/fw/access-strategy.hpp
index 7410b51..5fadc85 100644
--- a/daemon/fw/access-strategy.hpp
+++ b/daemon/fw/access-strategy.hpp
@@ -28,7 +28,7 @@
 
 #include "strategy.hpp"
 #include "rtt-estimator.hpp"
-#include "retransmission-suppression.hpp"
+#include "retx-suppression-fixed.hpp"
 #include <unordered_set>
 #include <unordered_map>
 
@@ -167,7 +167,7 @@
 
 private:
   FaceInfoTable m_fit;
-  RetransmissionSuppression m_retransmissionSuppression;
+  RetxSuppressionFixed m_retxSuppression;
   signal::ScopedConnection m_removeFaceInfoConn;
 };
 
diff --git a/daemon/fw/best-route-strategy2.cpp b/daemon/fw/best-route-strategy2.cpp
index bd58590..8aca86a 100644
--- a/daemon/fw/best-route-strategy2.cpp
+++ b/daemon/fw/best-route-strategy2.cpp
@@ -103,9 +103,9 @@
   const fib::NextHopList& nexthops = fibEntry->getNextHops();
   fib::NextHopList::const_iterator it = nexthops.end();
 
-  RetransmissionSuppression::Result suppression =
-      m_retransmissionSuppression.decide(inFace, interest, *pitEntry);
-  if (suppression == RetransmissionSuppression::NEW) {
+  RetxSuppression::Result suppression =
+      m_retxSuppression.decide(inFace, interest, *pitEntry);
+  if (suppression == RetxSuppression::NEW) {
     // forward to nexthop with lowest cost except downstream
     it = std::find_if(nexthops.begin(), nexthops.end(),
       bind(&predicate_NextHop_eligible, pitEntry, _1, inFace.getId(),
@@ -124,7 +124,7 @@
     return;
   }
 
-  if (suppression == RetransmissionSuppression::SUPPRESS) {
+  if (suppression == RetxSuppression::SUPPRESS) {
     NFD_LOG_DEBUG(interest << " from=" << inFace.getId()
                            << " suppressed");
     return;
diff --git a/daemon/fw/best-route-strategy2.hpp b/daemon/fw/best-route-strategy2.hpp
index 5a0f3be..603be0e 100644
--- a/daemon/fw/best-route-strategy2.hpp
+++ b/daemon/fw/best-route-strategy2.hpp
@@ -27,7 +27,7 @@
 #define NFD_DAEMON_FW_BEST_ROUTE_STRATEGY2_HPP
 
 #include "strategy.hpp"
-#include "retransmission-suppression.hpp"
+#include "retx-suppression-fixed.hpp"
 
 namespace nfd {
 namespace fw {
@@ -55,7 +55,7 @@
   static const Name STRATEGY_NAME;
 
 private:
-  RetransmissionSuppression m_retransmissionSuppression;
+  RetxSuppressionFixed m_retxSuppression;
 };
 
 } // namespace fw
diff --git a/daemon/fw/retransmission-suppression.cpp b/daemon/fw/retx-suppression-fixed.cpp
similarity index 79%
rename from daemon/fw/retransmission-suppression.cpp
rename to daemon/fw/retx-suppression-fixed.cpp
index be1ff0b..74f2302 100644
--- a/daemon/fw/retransmission-suppression.cpp
+++ b/daemon/fw/retx-suppression-fixed.cpp
@@ -23,17 +23,22 @@
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "retransmission-suppression.hpp"
+#include "retx-suppression-fixed.hpp"
 
 namespace nfd {
 namespace fw {
 
-/// \todo don't use fixed interval; make it adaptive or use exponential back-off #1913
-const time::milliseconds RetransmissionSuppression::MIN_RETRANSMISSION_INTERVAL(100);
+const time::milliseconds RetxSuppressionFixed::DEFAULT_MIN_RETX_INTERVAL(100);
 
-RetransmissionSuppression::Result
-RetransmissionSuppression::decide(const Face& inFace, const Interest& interest,
-                                  const pit::Entry& pitEntry)
+RetxSuppressionFixed::RetxSuppressionFixed(const time::milliseconds& minRetxInterval)
+  : m_minRetxInterval(minRetxInterval)
+{
+  BOOST_ASSERT(minRetxInterval > time::milliseconds::zero());
+}
+
+RetxSuppression::Result
+RetxSuppressionFixed::decide(const Face& inFace, const Interest& interest,
+                             const pit::Entry& pitEntry) const
 {
   bool isNewPitEntry = !pitEntry.hasUnexpiredOutRecords();
   if (isNewPitEntry) {
@@ -51,7 +56,7 @@
 
   time::steady_clock::TimePoint now = time::steady_clock::now();
   time::steady_clock::Duration sinceLastOutgoing = now - lastOutgoing->getLastRenewed();
-  bool shouldSuppress = sinceLastOutgoing < MIN_RETRANSMISSION_INTERVAL;
+  bool shouldSuppress = sinceLastOutgoing < m_minRetxInterval;
   return shouldSuppress ? SUPPRESS : FORWARD;
 }
 
diff --git a/daemon/fw/retransmission-suppression.hpp b/daemon/fw/retx-suppression-fixed.hpp
similarity index 67%
copy from daemon/fw/retransmission-suppression.hpp
copy to daemon/fw/retx-suppression-fixed.hpp
index 4553433..f88c83e 100644
--- a/daemon/fw/retransmission-suppression.hpp
+++ b/daemon/fw/retx-suppression-fixed.hpp
@@ -23,44 +23,38 @@
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
-#define NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
+#ifndef NFD_DAEMON_FW_RETX_SUPPRESSION_FIXED_HPP
+#define NFD_DAEMON_FW_RETX_SUPPRESSION_FIXED_HPP
 
-#include "strategy.hpp"
+#include "retx-suppression.hpp"
 
 namespace nfd {
 namespace fw {
 
-/** \brief helper for consumer retransmission suppression
+/** \brief a retransmission suppression decision algorithm that
+ *         suppresses retransmissions within a fixed duration
  */
-class RetransmissionSuppression : noncopyable
+class RetxSuppressionFixed : public RetxSuppression
 {
 public:
-  enum Result {
-    /** \brief Interest is new (not a retransmission)
-     */
-    NEW,
-
-    /** \brief Interest is retransmission and should be forwarded
-     */
-    FORWARD,
-
-    /** \brief Interest is retransmission and should be suppressed
-     */
-    SUPPRESS
-  };
+  explicit
+  RetxSuppressionFixed(const time::milliseconds& minRetxInterval = DEFAULT_MIN_RETX_INTERVAL);
 
   /** \brief determines whether Interest is a retransmission,
    *         and if so, whether it shall be forwarded or suppressed
    */
-  Result
-  decide(const Face& inFace, const Interest& interest, const pit::Entry& pitEntry);
+  virtual Result
+  decide(const Face& inFace, const Interest& interest,
+         const pit::Entry& pitEntry) const DECL_OVERRIDE;
 
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
-  static const time::milliseconds MIN_RETRANSMISSION_INTERVAL;
+public:
+  static const time::milliseconds DEFAULT_MIN_RETX_INTERVAL;
+
+private:
+  const time::milliseconds m_minRetxInterval;
 };
 
 } // namespace fw
 } // namespace nfd
 
-#endif // NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
+#endif // NFD_DAEMON_FW_RETX_SUPPRESSION_FIXED_HPP
diff --git a/daemon/fw/retransmission-suppression.hpp b/daemon/fw/retx-suppression.hpp
similarity index 85%
rename from daemon/fw/retransmission-suppression.hpp
rename to daemon/fw/retx-suppression.hpp
index 4553433..06aaf94 100644
--- a/daemon/fw/retransmission-suppression.hpp
+++ b/daemon/fw/retx-suppression.hpp
@@ -23,8 +23,8 @@
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
-#define NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
+#ifndef NFD_DAEMON_FW_RETX_SUPPRESSION_HPP
+#define NFD_DAEMON_FW_RETX_SUPPRESSION_HPP
 
 #include "strategy.hpp"
 
@@ -33,7 +33,7 @@
 
 /** \brief helper for consumer retransmission suppression
  */
-class RetransmissionSuppression : noncopyable
+class RetxSuppression : noncopyable
 {
 public:
   enum Result {
@@ -53,14 +53,11 @@
   /** \brief determines whether Interest is a retransmission,
    *         and if so, whether it shall be forwarded or suppressed
    */
-  Result
-  decide(const Face& inFace, const Interest& interest, const pit::Entry& pitEntry);
-
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
-  static const time::milliseconds MIN_RETRANSMISSION_INTERVAL;
+  virtual Result
+  decide(const Face& inFace, const Interest& interest, const pit::Entry& pitEntry) const = 0;
 };
 
 } // namespace fw
 } // namespace nfd
 
-#endif // NFD_DAEMON_FW_RETRANSMISSION_SUPPRESSION_HPP
+#endif // NFD_DAEMON_FW_RETX_SUPPRESSION_HPP