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diff --git a/cmake/config/lib/frct.cmake b/cmake/config/lib/frct.cmake
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+# FRCT configuration for Ouroboros Options for the flow and retransmission control protocol in
+# src/lib/frct.c
+
+# Delta-t protocol timers (Watson bound: 3*MPL + A + R).
+# MPL is reported per IPCP (IPCP_*_MPL); A and R are FRCT-wide.
+set(DELTA_T_ACK 1000 CACHE STRING
+  "Maximum time to acknowledge a packet (ms)")
+set(DELTA_T_RTX 32000 CACHE STRING
+  "Maximum time to retransmit a packet (ms)")
+
+# FRCT configuration
+set(FRCT_REORDER_QUEUE_SIZE 128 CACHE STRING
+  "Size of the reordering queue, must be a power of 2")
+set(FRCT_START_WINDOW 128 CACHE STRING
+  "Start window, must be a power of 2")
+set(FRCT_LINUX_RTT_ESTIMATOR TRUE CACHE BOOL
+  "Use Linux RTT estimator formula instead of the TCP RFC formula")
+set(FRCT_RTO_MDEV_MULTIPLIER 2 CACHE STRING
+  "Multiplier for deviation term in the RTO: RTO = sRTT + (mdev << X)")
+set(FRCT_RTO_INC_FACTOR 0 CACHE STRING
+  "Divisor for RTO increase after timeout: RTO += RTX >> X, 0: Karn/Partridge")
+set(FRCT_RTO_MIN 250 CACHE STRING
+  "Hard floor for Retransmission Timeout (RTO) for FRCT (us)")
+set(FRCT_TICK_TIME 5000 CACHE STRING
+  "Tick time for FRCT activity (retransmission, acknowledgments) (us)")
+set(FRCT_DEBUG_STDOUT FALSE CACHE BOOL
+  "Print FRCT final counters to stdout at flow teardown")
+
+# Retransmission (RXM) configuration
+set(RXM_MIN_RESOLUTION 20 CACHE STRING
+  "Minimum retransmission delay (ns), as a power to 2")
+set(RXM_WHEEL_MULTIPLIER 4 CACHE STRING
+  "Factor for retransmission wheel levels as a power to 2")
+set(RXM_WHEEL_LEVELS 3 CACHE STRING
+  "Number of levels in the retransmission wheel")
+set(RXM_WHEEL_SLOTS_PER_LEVEL 256 CACHE STRING
+  "Number of slots per level in the retransmission wheel, must be a power of 2")
+
+# Acknowledgment wheel configuration
+set(ACK_WHEEL_SLOTS 256 CACHE STRING
+  "Number of slots in the acknowledgment wheel, must be a power of 2")
+set(ACK_WHEEL_RESOLUTION 18 CACHE STRING
+  "Minimum acknowledgment delay (ns), as a power to 2")