diff --git a/daemon/fw/ncc-strategy.hpp b/daemon/fw/ncc-strategy.hpp
index f78b840..6c284a9 100644
--- a/daemon/fw/ncc-strategy.hpp
+++ b/daemon/fw/ncc-strategy.hpp
@@ -99,8 +99,11 @@
 
   public:
     bool isNewInterest;
+    /// timer that expires when best face does not respond within predicted time
     EventId bestFaceTimeout;
+    /// timer for propagating to another face
     EventId propagateTimer;
+    /// maximum interval between forwarding to two nexthops except best and previous
     time::microseconds maxInterval;
   };